WO2019142906A1 - Trowelled finishing agent and usage thereof - Google Patents
Trowelled finishing agent and usage thereof Download PDFInfo
- Publication number
- WO2019142906A1 WO2019142906A1 PCT/JP2019/001445 JP2019001445W WO2019142906A1 WO 2019142906 A1 WO2019142906 A1 WO 2019142906A1 JP 2019001445 W JP2019001445 W JP 2019001445W WO 2019142906 A1 WO2019142906 A1 WO 2019142906A1
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- WIPO (PCT)
- Prior art keywords
- concrete
- finish
- iron
- finishing
- parts
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/29—Producing shaped prefabricated articles from the material by profiling or strickling the material in open moulds or on moulding surfaces
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Definitions
- the present invention relates mainly to a trowel finish used in the construction and civil engineering industry and a method of using the same.
- the concrete of the present invention is a generic term for cement paste, mortar and concrete.
- the finishing agent for trotting is also referred to as a finishing aid for trotting since it plays an auxiliary role in finishing for trolling.
- the construction industry is said to be an industry with many so-called 3K (danger, heavy, dirty) work.
- 3K mine, heavy, dirty
- the Ministry of Land, Infrastructure, Transport and Tourism is aiming to reform the construction industry, aiming for the new 3K (good pay, good vacation, hopeful) in the "National Land and Transport White Paper” and "Key Policy”.
- i-Construction it is a policy to promote work efficiency, labor saving and light labor. Among them, it is desirable to reduce overtime in connection with the improvement of the working environment of workers at construction sites.
- Concrete used in construction and civil engineering structures is often poured into a mold and then the concrete surface is finish ironed.
- the quality of this finishing may affect the cracking and strength of the surface of the concrete and ultimately affect the durability of the concrete structure.
- There is an optimal time zone from concrete placement in the trolling process and if it is too early or too late, the finish of the concrete surface is adversely affected. In winter, especially when the temperature is low, the optimal time zone may be 10 hours or more after concrete placement.
- Patent Document 7 polymer dispersion
- Patent Document 8 surfactant
- Patent Document 9 aqueous curing agent
- Patent Document 10 In order to accelerate the setting and hardening of concrete and shorten the waiting time until the beginning of setting, it is conceivable to add a setting accelerator, such as aluminum sulfate, to concrete (Patent Document 10, Patent Document 11). During this time, the consistency of the concrete was lowered, the workability at the time of placing was significantly deteriorated, the construction did not go well, and there was a risk of causing a construction defect.
- a setting accelerator such as aluminum sulfate
- paraffin-based iron finishing agents are known (patent documents 12 to 14). However, this finish is used after bleeding of the concrete has settled and has no effect of suppressing bleeding.
- Patent Document 15 There is also known a method of coating a paraffin-based coating curing agent after hardening of the concrete, that is, after some time after finishing the finishing operation. Although this method is a method of suppressing neutralization and salt damage of concrete, it does not improve the finish of the iron and does not suppress the occurrence of bleeding.
- Patent 02044653 Japanese Patent Application Laid-Open No. 06-172060 JP 10-018566 A Patent 03398716 gazette Japanese Patent Application Laid-Open No. 2000-015619 Patent No. 05830051 Patent No. 01887894 Patent No. 04574316 JP, 2014-173246, A French Patent 2031950 Japanese Patent Application Publication No. 08-48553 Japanese Patent Application Laid-Open No. 06-87113 Japanese Patent Application Laid-Open No. 11-21184 JP, 2010-195661, A JP 2007-308353 A
- the quality of finishing of the iron surface of the concrete is improved, the strength of the concrete is enhanced, and development of iron finishing agent which can shorten the time until the iron finishing becomes possible, and after casting concrete, generation of bleeding continues. It is possible to finish even in the situation where there is a problem, and there has been a demand for a finish that can exhibit a good finish, such as the development of a finish that allows bleeding after the finish.
- this invention provides the iron finishing agent which can exhibit favorable iron finishing property with respect to the concrete surface after casting of concrete. More specific problems are: (1) The quality of finishing of the iron surface of the concrete is improved, the strength of the concrete is enhanced, and the time until the iron finishing becomes possible can be shortened, or (2) The present invention is to provide a trowel finish which can be finished even when bleeding continues after pouring concrete.
- the present inventors considered the present invention described below and found that the problems can be solved. That is, the present invention is as follows.
- the slump or slump flow value of the concrete after 90 minutes of completion of mixing is 2 to 10 kg / m 3 with respect to the concrete to which the addition amount of the above-mentioned iron finish is 2 to 10 kg / m 3 to which concrete is not added.
- the iron finish which can exhibit favorable iron finish property with respect to the concrete surface after casting of concrete. More specifically, (1) the quality of finishing of the iron surface of the concrete is improved and the strength of the concrete is enhanced, and the time from placing the concrete to the finishing of the iron can be shortened, or (2) concrete After casting, it is possible to finish even in the situation where bleeding continues, and after finishing, the bleeding will be settled, which will lead to more efficient work of plasterers and can reduce overtime work at the construction site. .
- the object of the above (1) is mainly achieved by the first embodiment of the present invention described later
- the object of the above (2) is mainly achieved by the second embodiment of the present invention described later.
- the finish according to the present invention comprises 70 parts by weight or more and 95 parts by weight or less of formic acid or a salt thereof, and 5 parts by weight or more and 30 parts by weight or less of clay mineral, or liquid paraffin and aluminum sulfate and / or Or contains potassium alum.
- the first embodiment of the present invention is a iron finishing agent comprising 70 parts by mass to 95 parts by mass of formic acid or a salt thereof and 5 parts by mass to 30 parts by mass of a clay mineral.
- the formic acid or a salt thereof in the first form is not particularly limited, and examples thereof include formic acid, calcium formate, ammonium formate, sodium formate and the like.
- the use of calcium formate is preferable because it does not cause an alkali aggregate reaction and supplies calcium ions involved in the hydration reaction of cement.
- 70 parts or more and 95 parts or less are preferable, and 80 parts or more and 90 parts or less are more preferable in 100 parts of the formic acid or its salt of a 1st form. If it is less than 70 parts, it may not be possible to shorten the time until the iron finish can be finished immediately after pouring the concrete, while if it exceeds 95 parts, the quality of the iron finish may not be improved.
- sepiolite and bentonite are preferable, and those commercially available can be used.
- sepiolite can be used under the trade name “IGS” manufactured by Sakai Kogyo Co., Ltd.
- Bentonite is mainly composed of clay mineral montmorillonite, and silicate minerals such as quartz, ⁇ -cristobalite and opal as subcomponents, silicate minerals such as feldspar, mica and zeolite, carbonate minerals such as calcite, dolomite and gypsum, It is a weak alkaline clay rock accompanied by sulfate minerals and sulfide minerals such as pyrite.
- a trade name "Kuna” manufactured by Hojun Co., Ltd. can be used. 5 parts or more and 30 parts or less are preferable, and 10 parts or more and 20 parts or less of the viscosity mineral of a 1st form are preferable in 100 parts of the iron finishing agents for concrete.
- the total of formic acid or a salt thereof and a clay mineral in the first form of the finish according to the present invention is preferably 90% by mass or more, more preferably 95% by mass, from the viewpoint of achieving a good effect, and 100 More preferably, it is mass%.
- Trowel finish of the first embodiment concrete 1 m 3 relative to 2 kg / m 3 or more, is preferably used in 10 kg / m 3 or less of the range, 4 kg / m 3 or more, more preferably 8 kg / m 3 or less . If it is less than 2 kg / m 3 , the effect of shortening the time until the iron can be finished immediately after putting in the concrete may not be seen, while the effect of shortening the time even more than 10 kg / m 3 is Not seen, may adversely affect the fluidity retention of concrete.
- the cement used for the first form of concrete is not particularly limited, and in addition to various portland cements such as normal, early strength, super early strength, moderate heat, sulfate resistance, and low heat, it is possible to use portland cement Any of various mixed cements in which blast furnace slag, fly ash, silica and limestone fine powder etc. are mixed can be used.
- the aggregate used for the first form of concrete is not particularly limited, and either naturally occurring aggregate or artificially manufactured aggregate can be used.
- a water reducing agent in addition to the concrete finish for concrete of the present invention, a water reducing agent, a high performance water reducing agent, an AE water reducing agent, a high performance AE water reducing agent, a fluidizing agent, an antifoamer, a thickener, an antirust 1 type of fibrous materials such as anti-freeze agents, anti-freeze agents, shrinkage reducing agents, setting modifiers, vinylon fibers, acrylic fibers and carbon fibers, polymer dispersions for cement mixing, anion exchangers such as hydrotalcite, etc. It is possible to use 2 or more types in the range which does not inhibit the object of the present invention substantially.
- the method of mixing the respective materials is not particularly limited, and the respective materials may be mixed at the time of application, or part or all of them may be mixed beforehand.
- the mixing apparatus any existing apparatus can be used, and examples thereof include a tilt mixer, an omni mixer, a Henschel mixer, a V-type mixer, a pro shear mixer, and a Nauta mixer.
- a second form of the present invention is a trowel finish comprising liquid paraffin and aluminum sulfate and / or potassium alum.
- the second form of the iron finishing agent after casting concrete, can start the iron finishing without waiting for the occurrence of bleeding to stop, which leads to improvement in the efficiency of the plasterer's work.
- a plasterer makes primary finishing, and after bleeding occurrence has been settled, twice as much plastering work was necessary to perform final finishing again, and from primary finishing to final finishing
- the waiting time was several hours before the work, and this waiting time led to overtime work at the construction site.
- the use of the second form of the iron finishing agent makes it possible to complete the work with one plastering work as well as the primary finishing and the final finishing, and it is possible to reduce overtime work at the construction site.
- a second form of finish has liquid paraffin and aluminum sulfate and / or potassium alum.
- the proportion is preferably 50 to 95 parts of liquid paraffin and 5 to 50 parts of aluminum sulfate and / or potassium alum, and more preferably 60 to 90 parts of liquid paraffin and 10 to 40 parts of aluminum sulfate and / or potassium alum.
- the amount of liquid paraffin is less than 50 parts, or if aluminum sulfate and / or potassium alum is more than 50 parts, iron finish may deteriorate, while the amount of liquid paraffin exceeds 95 parts, aluminum sulfate and / or aluminum sulfate and / or If the potassium alum content is less than 5 parts, bleeding may not be achieved after finishing the iron.
- Paraffin is a mixture of non-volatile refined saturated hydrocarbons. It is a kind of hydrocarbon compound, and it is a general term for alkanes having 20 or more carbon atoms (chain saturated hydrocarbons having a general formula of C n H 2 n + 2 ). Paraffins are usually not homogeneous and are mixed with various carbon chains. Among paraffins, those containing a large amount of long carbon chains are solid and called “petroleum wax”. On the other hand, those containing many short carbon chains are liquid at normal temperature and pressure and are called “liquid paraffin". In the second form, liquid paraffin is used. In the second form, commercially available paraffin based curing agents can be used. Specific examples thereof include, for example, "Master Cure” manufactured by Pozzolis Corporation, and "Concure” manufactured by Foslock.
- the aluminum sulfate in the second form is represented by the general formula Al 2 (SO 4 ) 3 .nH 2 O, and n in the formula is in the range of 0 to 18. There are various crystal waters of aluminum sulfate, but in the second form any can be used.
- Aluminum sulfate is a powder, and its particle size is not limited, but particles of 500 ⁇ m or less are usually preferable, and particles of 325 ⁇ m or less are more preferable. When the particle size of aluminum sulfate exceeds 500 ⁇ m, the finish of the iron may be deteriorated or bleeding after the iron may not be settled.
- the "particle size" in the present specification can be determined by sieving.
- the potassium alum referred to in the second form is a kind of alum and is a double salt containing potassium ion, hydrated aluminum ion and sulfate ion. It is represented by the general formula AlK (SO 4 ) 2 .nH 2 O, and n in the formula can be any of 0-12. In the second form, it is also possible to use one which has lost crystal water by heating.
- Potassium alum is a powder, and its particle size is not limited, but particles of 500 ⁇ m or less are usually preferable, and particles of 325 ⁇ m or less are more preferable. When the particle size of potassium alum exceeds 500 ⁇ m, the finish of the iron may be deteriorated or bleeding after the iron may not be settled.
- the total of liquid paraffin and aluminum sulfate and / or potassium alum in the second form finish is preferably 90% by mass or more, and 95% by mass from the viewpoint of exhibiting a good effect. More preferably, it is 100 mass%.
- the amount of use of the finish of the second aspect is not particularly limited, but generally, it is preferably used in the range of 50 g to 500 g of the finish per m 2 of concrete, and more preferably 100 g to 300 g. If the amount is less than 50 g, the effect of the present invention, ie, the effect of suppressing the finish and bleeding may not be sufficient. If the amount exceeds 500 g, further enhancement of the effect may not be expected.
- the second form of iron finishing agent can be used at any timing after concrete placement and before the start of setting, but from the viewpoint of work efficiency, it can be used as soon as possible after concrete placement. It is desirable to use it within 2 hours after placing concrete, more preferably within 1 hour.
- the second form of cotton finish can be used for any concrete and is not influenced by the type of cement.
- cement include various Portland cements such as normal, early strength, ultra early strength, low heat and moderate heat, and various mixed cements obtained by mixing blast furnace slag, fly ash or silica with these portland cements, limestone powder or blast furnace Filler cement mixed with slowly cooled slag fine powder, environment-friendly cement (Ecocement) manufactured from municipal waste incineration ash and sewage sludge incineration ash, and calcium fluoroaluminate, auin, calcium aluminate And super rapid-hardening cements such as cement.
- environment-friendly cement Engelcement
- Totte finish time 20 molds of 30 ⁇ 30 ⁇ 10 cm were prepared and filled with concrete, and the concrete surface was finished with a gold swatch every one hour from pouring of the concrete. Observe the condition of the surface of the specimen 24 hours after finishing the iron, (1) that the surface of the concrete is smooth, and (2) that no sinking from the top of the concrete form is observed. From the filled specimens, the time from placing concrete to making it possible to finish was determined. Visual observation of the surface of the concrete: The surface of the sample for which the finishing time was determined was observed, and those with no visible white matter on the surface of the concrete were regarded as ⁇ , and those with the apparent white matter as ⁇ .
- Fluid flow retention of concrete Measure the slump or slump flow value after 90 minutes from immediately after pouring concrete, and increase or decrease the slump value or slump flow value of the concrete without adding a trowel finish to the reference value (0) It represented by ( ⁇ ).
- Compressive strength The concrete filled in a form of ⁇ 10 ⁇ 20 cm was measured at a material age of 24 hours in accordance with JIS A 1108 “Test method for compressive strength of concrete”. The compressive strength of the concrete which does not add the iron finishing agent was set to 100, and it represented by the relative value (%).
- the finish for concrete according to the present invention can shorten the finish time for concrete with a slump of 12 cm in a 5 ° C. environment, and no whitening is seen on the surface of the concrete, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
- Example 2A The experiment was performed in the same manner as in Experimental Example 1A except that the test was performed in a constant temperature room at 20 ° C. and a humidity of 60%. The results are shown in Table 2.
- the finish for iron for concrete according to the present invention can shorten the time for finishing iron for concrete with a slump of 12 cm in an environment of 20 ° C., and no whitening is observed on the surface of the concrete, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
- Example 3A The same evaluation as in Experimental Example 1A was carried out except that the high flow concrete with a slump flow of 65 cm was used. The results are shown in Table 3.
- Fly ash Fly ash class I as defined in JIS A 6201 "fly ash for concrete", water reducing agent manufactured by Shikoku Electric Power Co., Ltd .: polycarboxylate based high performance AE water reducing agent, manufactured by GCP Ltd.
- the concrete finish for concrete of the present invention can shorten the finish time for concrete with slump flow of 65 cm in an environment of 5 ° C., no whitening is seen on the surface of the concrete, and the fluidity of the concrete Further, it can be seen that the compressive strength is enhanced without adversely affecting.
- Example 4A The experiment was performed in the same manner as in Experimental Example 3A except that the test was performed in a temperature-controlled room at 20 ° C. and a humidity of 60%. The results are shown in Table 4.
- the concrete finish for concrete of the present invention can shorten the finish time for concrete with slump flow of 65 cm in an environment of 20 ° C., and no whitening is seen on the surface of the concrete, and the fluidity of the concrete Further, it can be seen that the compressive strength is enhanced without adversely affecting.
- the iron finishing agent for concrete of the present invention can shorten the iron finishing time for concrete with a slump of 12 cm in a 20 ° C. environment, and no whitening is seen on the concrete surface, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
- Cement Ordinary portland cement, commercially available product, Blaine specific surface area 3200 cm 2 / g.
- Coarse aggregate crushed stone, density 2.64 g / cm 3 .
- Fine aggregate washed sea sand. Chloride content 0.02%. Density 2.62 g / cm 3 .
- Finishing property x when sticking to the iron, not sticking to the iron, but when the surface of the concrete is pulled and the surface is not finished smooth ⁇ , the iron has good wettability and the concrete surface is also smooth If finished, it was ⁇ . Presence or absence of bleeding: ⁇ when obvious bleeding occurred after finishing iron, ⁇ when “bleeding” was observed after finishing iron after coagulation, and ⁇ when no bleeding was observed.
- Plastic crack resistance After finishing using a trowel operation, a blower was used and a soft wind (4.5 m / s) of Beaufort wind class 3 was applied to confirm the occurrence of cracks. ⁇ When concrete 1 m 2 per multiple cracking occurs, 1 if this occurred ⁇ , when the crack is not generated was ⁇ .
- Example 2B The experiment was performed in the same manner as in Example 1B except that the timing to use the iron finish after putting concrete was changed as shown in Table 8 using the iron finish D and the iron finish E. The results are shown in Table 8.
- Example 3B Use the trowel finish D and trowel finish E, except that the amount per 1 m 2 was changed as shown in Table 9 were carried out in the same manner as in Experimental Example 1B. The results are shown in Table 9.
- Example 4B The experiment was performed in the same manner as in Experimental Example 1B except that the blending ratio of liquid paraffin, aluminum sulfate and potassium alum in the finishing agent was as shown in Table 10. The results are shown in Table 10.
- Liquid paraffin A commercially available paraffin-based curing agent, manufactured by Pozzolith Co., Ltd., trade name "Master Cure”
- Aluminum sulfate commercially available aluminum sulfate, 18 hydrate (powder), particle size of 325 ⁇ m or less
- potassium alum commercially available potassium alum, 12 hydrate (powder), particle size of 325 ⁇ m or less
- the first form of the concrete finishing agent for concrete shortens the finishing time in normal temperature and low temperature environment, can finish with good condition of the concrete surface, and does not adversely affect the fluidity of the concrete, and the compressive strength Improve. In particular, it is suitable in the field of civil engineering and construction because it can shorten the time from concrete placement to finish in a low temperature environment.
- iron finishing agent By using the second form iron finishing agent, after putting concrete, iron finishing is possible even in a situation where bleeding continues, and bleeding is settled after iron finishing, thus improving the efficiency of plasterer's work. It has the effect of being able to reduce overtime work at the construction site.
Abstract
A trowelled finishing agent containing 70 to 95 parts by mass inclusive of formic acid or a salt thereof and 5 to 30 parts by mass inclusive of clay mineral or containing liquid paraffin and aluminum sulfate and/or potassium alum.
Description
本発明は、主に、建築・土木業界で使用されるコテ仕上げ剤及びその使用方法に関する。なお、本発明のコンクリートとは、セメントペースト、モルタル、コンクリートを総称するものである。また、本発明におけるコテ仕上げ剤は、コテ仕上げの補助的な役割を担う意味からコテ仕上げ助剤ということもある。
TECHNICAL FIELD The present invention relates mainly to a trowel finish used in the construction and civil engineering industry and a method of using the same. The concrete of the present invention is a generic term for cement paste, mortar and concrete. In the present invention, the finishing agent for trotting is also referred to as a finishing aid for trotting since it plays an auxiliary role in finishing for trolling.
建設業界は、いわゆる３Ｋ（危険、キツイ、汚い）作業が多い業界と言われている。国土交通省は、「国土交通白書」や「重点政策」の中で、新３Ｋ（給料がいい、休暇がとれる、希望がもてる）を目指すとし、建設業界の改革を掲げている。例えば、コンクリート工においても、「i-Construction」というキーワードの下、作業の効率化や、省力化・軽労化を推進していく方針である。その中で、施工現場の作業員の労働環境の改善と関連し、残業を減らすことが望まれている。
The construction industry is said to be an industry with many so-called 3K (danger, heavy, dirty) work. The Ministry of Land, Infrastructure, Transport and Tourism is aiming to reform the construction industry, aiming for the new 3K (good pay, good vacation, hopeful) in the "National Land and Transport White Paper" and "Key Policy". For example, even in concrete construction, under the keyword "i-Construction", it is a policy to promote work efficiency, labor saving and light labor. Among them, it is desirable to reduce overtime in connection with the improvement of the working environment of workers at construction sites.
建築及び土木構造物に用いられるコンクリートは、型枠に流し込み、その後コンクリート表面をコテ仕上げすることが多い。このコテ仕上げの良し悪しが、コンクリート表面のひび割れや強度に影響し、最終的にはコンクリート構造物の耐久性に影響する場合がある。コテ仕上げ工程には、コンクリート打設からの最適な時間帯があり、早すぎても遅すぎてもコンクリート表面の仕上げに悪影響を与える。特に気温が低い冬期は、最適な時間帯がコンクリート打設から１０時間以上後になることがある。
Concrete used in construction and civil engineering structures is often poured into a mold and then the concrete surface is finish ironed. The quality of this finishing may affect the cracking and strength of the surface of the concrete and ultimately affect the durability of the concrete structure. There is an optimal time zone from concrete placement in the trolling process, and if it is too early or too late, the finish of the concrete surface is adversely affected. In winter, especially when the temperature is low, the optimal time zone may be 10 hours or more after concrete placement.
コンクリート工では、コンクリートを打設した後コテ仕上げを行うが、最終のコテ仕上げ作業は、コンクリートのブリーディングが収まるまで行うことができない。ブリーディングが収まるのは、コンクリートの凝結始発時間の直前であるため、何時間もの間、左官職人は待機しているのが現状である。この待機時間が、作業効率の低下を招き、残業につながるケースが多く見受けられる。
In concrete work, the concrete is put in place and then ironed, but the final iron finishing operation can not be done until concrete bleeding is settled. Since bleeding is settled just before the concrete set-up time, plasterers are currently waiting for hours. There are many cases where this waiting time leads to a decrease in work efficiency, leading to overtime work.
そこで、コテ仕上げ時に表面仕上げ機を使用する方法（特許文献１）、荒ならしをして養生マットを併用する方法（特許文献２）、樹脂フィルムを用いてコテ仕上げする方法（特許文献３）、コンクリート表面からろ過マットを介して真空脱気する方法（特許文献４）、不織布シートを用いる方法（特許文献５、６）などが考案されている。しかし、特別な機材や資材を用いる必要があったり、工程が従来より長くなったり、仕上げに特別な技術を要するなどという課題があった。さらに、ポリマーディスパージョン（特許文献７）、界面活性剤（特許文献８）や水性養生剤（特許文献９）などの表面仕上げ剤を使用する、特別な機材や資材を必要としない技術が開発された。しかし、これらの表面仕上げ剤はコテ仕上げの品質は向上するが、コテ仕上げが可能となるまでの時間の短縮はできなかった。
Then, the method of using a surface finisher at the time of iron finishing (patent document 1), the method of roughening and using curing mat together (patent document 2), the method of iron finishing using a resin film (patent document 3) The method of carrying out vacuum degassing from a concrete surface via a filtration mat (patent documents 4), the method (patent documents 5 and 6) using a nonwoven fabric sheet, etc. are devised. However, there were problems such as the need to use special equipment and materials, the process to be longer than in the past, and special technology for finishing. In addition, technology has been developed that does not require special equipment or materials using surface finish agents such as polymer dispersion (Patent Document 7), surfactant (Patent Document 8), and aqueous curing agent (Patent Document 9). The However, although these surface finishes improve the quality of the iron finishing, they can not shorten the time until the iron finishing becomes possible.
コンクリートの凝結硬化を促進して凝結始発までの待機時間を短縮するため、凝結促進剤、例えば硫酸アルミニウムをコンクリートに添加する方法（特許文献１０、特許文献１１）が考えられるが、この場合、運搬中にコンクリートのコンシステンシーが低下し、打設時の作業性が著しく悪くなって施工が上手くいかず、施工欠陥を招く恐れがあった。
In order to accelerate the setting and hardening of concrete and shorten the waiting time until the beginning of setting, it is conceivable to add a setting accelerator, such as aluminum sulfate, to concrete (Patent Document 10, Patent Document 11). During this time, the consistency of the concrete was lowered, the workability at the time of placing was significantly deteriorated, the construction did not go well, and there was a risk of causing a construction defect.
一方、コテ仕上げ剤として、パラフィン系のものが知られている（特許文献１２～特許文献１４）。しかしながら、このコテ仕上げ剤はコンクリートのブリーディングが収まってから使用するものであり、又、ブリーディングを抑制する効果がないものであった。
On the other hand, paraffin-based iron finishing agents are known (patent documents 12 to 14). However, this finish is used after bleeding of the concrete has settled and has no effect of suppressing bleeding.
又、コンクリートが硬化した後、すなわち、コテ仕上げを終えた後にしばらくしてからパラフィン系の塗膜養生剤を被覆する方法が知られている（特許文献１５）。この方法はコンクリートの中性化や塩害を抑制する方法であるが、コテ仕上げ性を改善するものではなく、又、ブリーディングの発生を抑制するものでもなかった。
There is also known a method of coating a paraffin-based coating curing agent after hardening of the concrete, that is, after some time after finishing the finishing operation (Patent Document 15). Although this method is a method of suppressing neutralization and salt damage of concrete, it does not improve the finish of the iron and does not suppress the occurrence of bleeding.
そこで、コンクリート表面のコテ仕上げの品質が向上し、コンクリート強度が増進するとともに、コテ仕上げが可能となるまでの時間を短縮できるコテ仕上げ剤の開発や、コンクリートを打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能で、コテ仕上げ後にブリーディングが収まるようなコテ仕上げ剤の開発といった良好なコテ仕上げ性を発揮できるコテ仕上げ剤が待たれていた。
Therefore, the quality of finishing of the iron surface of the concrete is improved, the strength of the concrete is enhanced, and development of iron finishing agent which can shorten the time until the iron finishing becomes possible, and after casting concrete, generation of bleeding continues. It is possible to finish even in the situation where there is a problem, and there has been a demand for a finish that can exhibit a good finish, such as the development of a finish that allows bleeding after the finish.
以上から、本発明は、コンクリートの打設後のコンクリート表面に対して、良好なコテ仕上げ性を発揮できるコテ仕上げ剤を提供するものである。
より具体的な課題としては、（１）コンクリート表面のコテ仕上げの品質が向上し、コンクリート強度が増進するとともに、コテ仕上げが可能となるまでの時間を短縮できるコテ仕上げ剤、あるいは、（２）コンクリートの打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能なコテ仕上げ剤を提供するものである。 As mentioned above, this invention provides the iron finishing agent which can exhibit favorable iron finishing property with respect to the concrete surface after casting of concrete.
More specific problems are: (1) The quality of finishing of the iron surface of the concrete is improved, the strength of the concrete is enhanced, and the time until the iron finishing becomes possible can be shortened, or (2) The present invention is to provide a trowel finish which can be finished even when bleeding continues after pouring concrete.
より具体的な課題としては、（１）コンクリート表面のコテ仕上げの品質が向上し、コンクリート強度が増進するとともに、コテ仕上げが可能となるまでの時間を短縮できるコテ仕上げ剤、あるいは、（２）コンクリートの打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能なコテ仕上げ剤を提供するものである。 As mentioned above, this invention provides the iron finishing agent which can exhibit favorable iron finishing property with respect to the concrete surface after casting of concrete.
More specific problems are: (1) The quality of finishing of the iron surface of the concrete is improved, the strength of the concrete is enhanced, and the time until the iron finishing becomes possible can be shortened, or (2) The present invention is to provide a trowel finish which can be finished even when bleeding continues after pouring concrete.
上記課題を解決すべく鋭意検討した結果、本発明者らは下記本発明に想到し、当該課題を解決できることを見出した。すなわち、本発明は、下記のとおりである。
As a result of earnest studies to solve the above problems, the present inventors considered the present invention described below and found that the problems can be solved. That is, the present invention is as follows.
［１］ ギ酸又はその塩を７０質量部以上９５質量部以下、及び粘土鉱物を５質量部以上３０質量部以下含有してなるか、あるいは、流動パラフィンと、硫酸アルミニウム及び／又はカリウムミョウバンとを含有してなるコテ仕上げ剤。
［２］ コンクリート用である［１］に記載のコテ仕上げ剤。
［３］ 前記流動パラフィンが５０～９５質量部、並びに、前記硫酸アルミニウム及び／又は前記カリウムミョウバンが５～５０質量部である［１］又は［２］に記載のコテ仕上げ剤。
［４］ コンクリートに対する前記コテ仕上げ剤の添加量が２～１０ｋｇ／ｍ３であって、練り混ぜ完了から９０分後のコンクリートのスランプ又はスランプフロー値が、コテ仕上げ剤を添加しないコンクリートに対して、スランプ値が±２ｃｍ又はスランプフロー値が±５ｃｍの範囲とする［１］～［３］のいずれかに記載のコテ仕上げ剤の使用方法。 [1] 70 to 95 parts by mass of formic acid or a salt thereof and 5 to 30 parts by mass of clay mineral, or liquid paraffin and aluminum sulfate and / or potassium alum Containing iron finish.
[2] The finish for trowel according to [1], which is for concrete.
[3] The finish according to [1] or [2], wherein the liquid paraffin is 50 to 95 parts by mass, and the aluminum sulfate and / or the potassium alum is 5 to 50 parts by mass.
[4] The slump or slump flow value of the concrete after 90 minutes of completion of mixing is 2 to 10 kg / m 3 with respect to the concrete to which the addition amount of the above-mentioned iron finish is 2 to 10 kg / m 3 to which concrete is not added. The method of using the finish according to any one of [1] to [3], wherein the slump value is ± 2 cm or the slump flow value is ± 5 cm.
［２］ コンクリート用である［１］に記載のコテ仕上げ剤。
［３］ 前記流動パラフィンが５０～９５質量部、並びに、前記硫酸アルミニウム及び／又は前記カリウムミョウバンが５～５０質量部である［１］又は［２］に記載のコテ仕上げ剤。
［４］ コンクリートに対する前記コテ仕上げ剤の添加量が２～１０ｋｇ／ｍ３であって、練り混ぜ完了から９０分後のコンクリートのスランプ又はスランプフロー値が、コテ仕上げ剤を添加しないコンクリートに対して、スランプ値が±２ｃｍ又はスランプフロー値が±５ｃｍの範囲とする［１］～［３］のいずれかに記載のコテ仕上げ剤の使用方法。 [1] 70 to 95 parts by mass of formic acid or a salt thereof and 5 to 30 parts by mass of clay mineral, or liquid paraffin and aluminum sulfate and / or potassium alum Containing iron finish.
[2] The finish for trowel according to [1], which is for concrete.
[3] The finish according to [1] or [2], wherein the liquid paraffin is 50 to 95 parts by mass, and the aluminum sulfate and / or the potassium alum is 5 to 50 parts by mass.
[4] The slump or slump flow value of the concrete after 90 minutes of completion of mixing is 2 to 10 kg / m 3 with respect to the concrete to which the addition amount of the above-mentioned iron finish is 2 to 10 kg / m 3 to which concrete is not added. The method of using the finish according to any one of [1] to [3], wherein the slump value is ± 2 cm or the slump flow value is ± 5 cm.
本発明によれば、コンクリートの打設後のコンクリート表面に対して、良好なコテ仕上げ性を発揮できるコテ仕上げ剤を提供するものであることができる。
より具体的には、（１）コンクリート表面のコテ仕上げの品質が向上し、コンクリート強度が増進するとともに、コンクリート打設からコテ仕上げが可能となるまでの時間を短縮できる、あるいは、（２）コンクリートを打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能で、コテ仕上げ後はブリーディングが収まるため、左官職人の業務効率化につながり、建設現場の残業を減らすことができるといった効果を奏する。
なお、上記（１）の課題は主に後述する本発明の第１の形態により達成され、上記（２）の課題は主に後述する本発明の第２の形態により達成される。 ADVANTAGE OF THE INVENTION According to this invention, it can provide the iron finish which can exhibit favorable iron finish property with respect to the concrete surface after casting of concrete.
More specifically, (1) the quality of finishing of the iron surface of the concrete is improved and the strength of the concrete is enhanced, and the time from placing the concrete to the finishing of the iron can be shortened, or (2) concrete After casting, it is possible to finish even in the situation where bleeding continues, and after finishing, the bleeding will be settled, which will lead to more efficient work of plasterers and can reduce overtime work at the construction site. .
The object of the above (1) is mainly achieved by the first embodiment of the present invention described later, and the object of the above (2) is mainly achieved by the second embodiment of the present invention described later.
より具体的には、（１）コンクリート表面のコテ仕上げの品質が向上し、コンクリート強度が増進するとともに、コンクリート打設からコテ仕上げが可能となるまでの時間を短縮できる、あるいは、（２）コンクリートを打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能で、コテ仕上げ後はブリーディングが収まるため、左官職人の業務効率化につながり、建設現場の残業を減らすことができるといった効果を奏する。
なお、上記（１）の課題は主に後述する本発明の第１の形態により達成され、上記（２）の課題は主に後述する本発明の第２の形態により達成される。 ADVANTAGE OF THE INVENTION According to this invention, it can provide the iron finish which can exhibit favorable iron finish property with respect to the concrete surface after casting of concrete.
More specifically, (1) the quality of finishing of the iron surface of the concrete is improved and the strength of the concrete is enhanced, and the time from placing the concrete to the finishing of the iron can be shortened, or (2) concrete After casting, it is possible to finish even in the situation where bleeding continues, and after finishing, the bleeding will be settled, which will lead to more efficient work of plasterers and can reduce overtime work at the construction site. .
The object of the above (1) is mainly achieved by the first embodiment of the present invention described later, and the object of the above (2) is mainly achieved by the second embodiment of the present invention described later.
本発明のコテ仕上げ剤は、ギ酸又はその塩を７０質量部以上９５質量部以下、及び粘土鉱物を５質量部以上３０質量部以下含有してなるか、あるいは、流動パラフィンと、硫酸アルミニウム及び／又はカリウムミョウバンとを含有してなる。
以下、本発明を詳細に説明する。なお、「部」や「％」は、特に規定しない限り質量基準である The finish according to the present invention comprises 70 parts by weight or more and 95 parts by weight or less of formic acid or a salt thereof, and 5 parts by weight or more and 30 parts by weight or less of clay mineral, or liquid paraffin and aluminum sulfate and / or Or contains potassium alum.
Hereinafter, the present invention will be described in detail. In addition, "part" and "%" are mass standard unless otherwise specified
以下、本発明を詳細に説明する。なお、「部」や「％」は、特に規定しない限り質量基準である The finish according to the present invention comprises 70 parts by weight or more and 95 parts by weight or less of formic acid or a salt thereof, and 5 parts by weight or more and 30 parts by weight or less of clay mineral, or liquid paraffin and aluminum sulfate and / or Or contains potassium alum.
Hereinafter, the present invention will be described in detail. In addition, "part" and "%" are mass standard unless otherwise specified
［本発明の第１の形態］
本発明の第１の形態は、ギ酸又はその塩を７０質量部以上９５質量部以下、及び粘土鉱物を５質量部以上３０質量部以下含有してなるコテ仕上げ剤である。
第１の形態におけるギ酸又はその塩は、特に限定されないが、例えば、ギ酸、ギ酸カルシウム、ギ酸アンモニウム、ギ酸ナトリウムなどが挙げられる。中でも、ギ酸カルシウムの使用が、アルカリ骨材反応を起こさないこと、並びに、セメントの水和反応に関わるカルシウムイオンを供給することから好ましい。 First Embodiment of the Present Invention
The first embodiment of the present invention is a iron finishing agent comprising 70 parts by mass to 95 parts by mass of formic acid or a salt thereof and 5 parts by mass to 30 parts by mass of a clay mineral.
The formic acid or a salt thereof in the first form is not particularly limited, and examples thereof include formic acid, calcium formate, ammonium formate, sodium formate and the like. Among them, the use of calcium formate is preferable because it does not cause an alkali aggregate reaction and supplies calcium ions involved in the hydration reaction of cement.
本発明の第１の形態は、ギ酸又はその塩を７０質量部以上９５質量部以下、及び粘土鉱物を５質量部以上３０質量部以下含有してなるコテ仕上げ剤である。
第１の形態におけるギ酸又はその塩は、特に限定されないが、例えば、ギ酸、ギ酸カルシウム、ギ酸アンモニウム、ギ酸ナトリウムなどが挙げられる。中でも、ギ酸カルシウムの使用が、アルカリ骨材反応を起こさないこと、並びに、セメントの水和反応に関わるカルシウムイオンを供給することから好ましい。 First Embodiment of the Present Invention
The first embodiment of the present invention is a iron finishing agent comprising 70 parts by mass to 95 parts by mass of formic acid or a salt thereof and 5 parts by mass to 30 parts by mass of a clay mineral.
The formic acid or a salt thereof in the first form is not particularly limited, and examples thereof include formic acid, calcium formate, ammonium formate, sodium formate and the like. Among them, the use of calcium formate is preferable because it does not cause an alkali aggregate reaction and supplies calcium ions involved in the hydration reaction of cement.
第１の形態のギ酸又はその塩は、コンクリート用コテ仕上げ剤１００部中、７０部以上９５部以下が好ましく、８０部以上９０部以下がより好ましい。７０部未満では、コンクリートの打ち込み直後からコテ仕上げが可能となるまでの時間が短縮できないことがあり、一方、９５部を超えるとコテ仕上げの品質が向上しないことがある。
70 parts or more and 95 parts or less are preferable, and 80 parts or more and 90 parts or less are more preferable in 100 parts of the formic acid or its salt of a 1st form. If it is less than 70 parts, it may not be possible to shorten the time until the iron finish can be finished immediately after pouring the concrete, while if it exceeds 95 parts, the quality of the iron finish may not be improved.
第１の形態の粘度鉱物としては、セピオライト、ベントナイトが好ましく、市販されているものが使用可能である。例えば、セピオライトは、巴工業（株）製商品名「ＩＧＳ」などが使用可能である。ベントナイトは、粘土鉱物モンモリロナイトを主成分とし、石英、α－クリストバライト、オパールなどの珪酸鉱物を副成分として、長石、マイカ、ゼオライトなどの珪酸塩鉱物、カルサイト、ドロマイト、ジプサムなどの炭酸塩鉱物や硫酸塩鉱物、さらにパイライトなどの硫化鉱物を随伴する弱アルカリ性粘土岩である。市販品としては、例えば、（株）ホージュン製商品名「榛名」などが使用可能である。
第１の形態の粘度鉱物は、コンクリート用コテ仕上げ剤１００部中、５部以上３０部以下が好ましく、１０部以上２０部以下がより好ましい。 As the first-type viscosity mineral, sepiolite and bentonite are preferable, and those commercially available can be used. For example, sepiolite can be used under the trade name “IGS” manufactured by Sakai Kogyo Co., Ltd. Bentonite is mainly composed of clay mineral montmorillonite, and silicate minerals such as quartz, α-cristobalite and opal as subcomponents, silicate minerals such as feldspar, mica and zeolite, carbonate minerals such as calcite, dolomite and gypsum, It is a weak alkaline clay rock accompanied by sulfate minerals and sulfide minerals such as pyrite. As a commercial item, for example, a trade name "Kuna" manufactured by Hojun Co., Ltd. can be used.
5 parts or more and 30 parts or less are preferable, and 10 parts or more and 20 parts or less of the viscosity mineral of a 1st form are preferable in 100 parts of the iron finishing agents for concrete.
第１の形態の粘度鉱物は、コンクリート用コテ仕上げ剤１００部中、５部以上３０部以下が好ましく、１０部以上２０部以下がより好ましい。 As the first-type viscosity mineral, sepiolite and bentonite are preferable, and those commercially available can be used. For example, sepiolite can be used under the trade name “IGS” manufactured by Sakai Kogyo Co., Ltd. Bentonite is mainly composed of clay mineral montmorillonite, and silicate minerals such as quartz, α-cristobalite and opal as subcomponents, silicate minerals such as feldspar, mica and zeolite, carbonate minerals such as calcite, dolomite and gypsum, It is a weak alkaline clay rock accompanied by sulfate minerals and sulfide minerals such as pyrite. As a commercial item, for example, a trade name "Kuna" manufactured by Hojun Co., Ltd. can be used.
5 parts or more and 30 parts or less are preferable, and 10 parts or more and 20 parts or less of the viscosity mineral of a 1st form are preferable in 100 parts of the iron finishing agents for concrete.
第１の形態のコテ仕上げ剤におけるギ酸又はその塩と粘土鉱物との合計は、良好な効果を発現する観点から、９０質量％以上であることが好ましく、９５質量％であることより好ましく、１００質量％であることがさらに好ましい。
The total of formic acid or a salt thereof and a clay mineral in the first form of the finish according to the present invention is preferably 90% by mass or more, more preferably 95% by mass, from the viewpoint of achieving a good effect, and 100 More preferably, it is mass%.
第１の形態のコテ仕上げ剤は、コンクリート１ｍ３に対して２ｋｇ／ｍ３以上、１０ｋｇ／ｍ３以下の範囲で使用するのが好ましく、４ｋｇ／ｍ３以上、８ｋｇ／ｍ３以下がより好ましい。２ｋｇ／ｍ３未満だと、コンクリートの打ち込み直後からコテ仕上げが可能となるまでの時間の短縮効果がみられないことがあり、一方、１０ｋｇ／ｍ３を超えても更なる時間の短縮効果がみられず、コンクリートの流動性保持性に悪影響を与えることがある。
Trowel finish of the first embodiment, concrete 1 m 3 relative to 2 kg / m 3 or more, is preferably used in 10 kg / m 3 or less of the range, 4 kg / m 3 or more, more preferably 8 kg / m 3 or less . If it is less than 2 kg / m 3 , the effect of shortening the time until the iron can be finished immediately after putting in the concrete may not be seen, while the effect of shortening the time even more than 10 kg / m 3 is Not seen, may adversely affect the fluidity retention of concrete.
第１の形態のコンクリートに使用するセメントは、特に限定されるものではなく、普通、早強、超早強、中庸熱、耐硫酸塩、及び低熱等の各種ポルトランドセメントの他に、ポルトランドセメントに高炉スラグ、フライアッシュ、シリカ及び石灰石微粉末等を混合した各種混合セメントのいずれも使用可能である。
The cement used for the first form of concrete is not particularly limited, and in addition to various portland cements such as normal, early strength, super early strength, moderate heat, sulfate resistance, and low heat, it is possible to use portland cement Any of various mixed cements in which blast furnace slag, fly ash, silica and limestone fine powder etc. are mixed can be used.
第１の形態のコンクリートに使用する骨材は、特に限定されるものではなく、天然に産出する骨材、人工的に製造された骨材のいずれも使用可能である。
The aggregate used for the first form of concrete is not particularly limited, and either naturally occurring aggregate or artificially manufactured aggregate can be used.
第１の形態では、本発明のコンクリート用コテ仕上げ剤の他に、減水剤、高性能減水剤、ＡＥ減水剤、高性能ＡＥ減水剤、流動化剤、消泡剤、増粘剤、防錆剤、防凍剤、収縮低減剤、凝結調整剤、ビニロン繊維、アクリル繊維、及び炭素繊維等の繊維状物質、セメント混和用ポリマーディスパージョン、ハイドロタルサイト等のアニオン交換体等のうちの１種又は２種以上を、本発明の目的を実質的に阻害しない範囲で使用することが可能である。
In the first embodiment, in addition to the concrete finish for concrete of the present invention, a water reducing agent, a high performance water reducing agent, an AE water reducing agent, a high performance AE water reducing agent, a fluidizing agent, an antifoamer, a thickener, an antirust 1 type of fibrous materials such as anti-freeze agents, anti-freeze agents, shrinkage reducing agents, setting modifiers, vinylon fibers, acrylic fibers and carbon fibers, polymer dispersions for cement mixing, anion exchangers such as hydrotalcite, etc. It is possible to use 2 or more types in the range which does not inhibit the object of the present invention substantially.
第１の形態では、各材料の混合方法は特に限定されるものではなく、それぞれの材料を施工時に混合しても良いし、あらかじめその一部、あるいは全部を混合しておいても差し支えない。混合装置としては、既存の如何なる装置も使用可能であり、例えば、傾胴ミキサ、オムニミキサ、ヘンシェルミキサ、Ｖ型ミキサ、プロシェアミキサ、及びナウターミキサ等が挙げられる。
In the first embodiment, the method of mixing the respective materials is not particularly limited, and the respective materials may be mixed at the time of application, or part or all of them may be mixed beforehand. As the mixing apparatus, any existing apparatus can be used, and examples thereof include a tilt mixer, an omni mixer, a Henschel mixer, a V-type mixer, a pro shear mixer, and a Nauta mixer.
［本発明の第２の形態］
本発明の第２の形態は、流動パラフィンと、硫酸アルミニウム及び／又はカリウムミョウバンとを含有してなるコテ仕上げ剤である。
第２の形態のコテ仕上げ剤は、コンクリートを打設後、ブリーディングの発生が収まるのを待たなくてもコテ仕上げに取り掛かることができるため、左官職人の業務効率化につながる。通常、コンクリートを打設後、左官職人が一次仕上げを行い、ブリーディングの発生が収まってから、再び最終仕上げを行うため、二度の左官作業が必要であった上に、一次仕上げから最終仕上げを行うまでに、待機時間が数時間にもおよぶ場合が多く、この待機時間が建設現場の残業につながっていた。
第２の形態のコテ仕上げ剤を用いることで、一次仕上げと最終仕上げを兼ねて、一度の左官作業で済ませることが可能となり、建設現場の残業を減らすことが可能となる。 Second Embodiment of the Present Invention
A second form of the present invention is a trowel finish comprising liquid paraffin and aluminum sulfate and / or potassium alum.
The second form of the iron finishing agent, after casting concrete, can start the iron finishing without waiting for the occurrence of bleeding to stop, which leads to improvement in the efficiency of the plasterer's work. Normally, after casting concrete, a plasterer makes primary finishing, and after bleeding occurrence has been settled, twice as much plastering work was necessary to perform final finishing again, and from primary finishing to final finishing In many cases, the waiting time was several hours before the work, and this waiting time led to overtime work at the construction site.
The use of the second form of the iron finishing agent makes it possible to complete the work with one plastering work as well as the primary finishing and the final finishing, and it is possible to reduce overtime work at the construction site.
本発明の第２の形態は、流動パラフィンと、硫酸アルミニウム及び／又はカリウムミョウバンとを含有してなるコテ仕上げ剤である。
第２の形態のコテ仕上げ剤は、コンクリートを打設後、ブリーディングの発生が収まるのを待たなくてもコテ仕上げに取り掛かることができるため、左官職人の業務効率化につながる。通常、コンクリートを打設後、左官職人が一次仕上げを行い、ブリーディングの発生が収まってから、再び最終仕上げを行うため、二度の左官作業が必要であった上に、一次仕上げから最終仕上げを行うまでに、待機時間が数時間にもおよぶ場合が多く、この待機時間が建設現場の残業につながっていた。
第２の形態のコテ仕上げ剤を用いることで、一次仕上げと最終仕上げを兼ねて、一度の左官作業で済ませることが可能となり、建設現場の残業を減らすことが可能となる。 Second Embodiment of the Present Invention
A second form of the present invention is a trowel finish comprising liquid paraffin and aluminum sulfate and / or potassium alum.
The second form of the iron finishing agent, after casting concrete, can start the iron finishing without waiting for the occurrence of bleeding to stop, which leads to improvement in the efficiency of the plasterer's work. Normally, after casting concrete, a plasterer makes primary finishing, and after bleeding occurrence has been settled, twice as much plastering work was necessary to perform final finishing again, and from primary finishing to final finishing In many cases, the waiting time was several hours before the work, and this waiting time led to overtime work at the construction site.
The use of the second form of the iron finishing agent makes it possible to complete the work with one plastering work as well as the primary finishing and the final finishing, and it is possible to reduce overtime work at the construction site.
第２の形態のコテ仕上げ剤は、流動パラフィンと硫酸アルミニウム及び／又はカリウムミョウバンを含有する。その割合は、流動パラフィン５０～９５部と、硫酸アルミニウム及び／又はカリウムミョウバン５～５０部が好ましく、流動パラフィン６０～９０部と、硫酸アルミニウム及び／又はカリウムミョウバン１０～４０部がより好ましい。
A second form of finish has liquid paraffin and aluminum sulfate and / or potassium alum. The proportion is preferably 50 to 95 parts of liquid paraffin and 5 to 50 parts of aluminum sulfate and / or potassium alum, and more preferably 60 to 90 parts of liquid paraffin and 10 to 40 parts of aluminum sulfate and / or potassium alum.
流動パラフィンが５０部未満であったり、硫酸アルミニウム及び／又はカリウムミョウバンが５０部を超えると、コテ仕上げ性が悪くなる場合があり、一方、流動パラフィンが９５部を超えたり、硫酸アルミニウム及び／又はカリウムミョウバンが５部未満であると、コテ仕上げ後にブリーディングが収まらない場合がある。
If the amount of liquid paraffin is less than 50 parts, or if aluminum sulfate and / or potassium alum is more than 50 parts, iron finish may deteriorate, while the amount of liquid paraffin exceeds 95 parts, aluminum sulfate and / or aluminum sulfate and / or If the potassium alum content is less than 5 parts, bleeding may not be achieved after finishing the iron.
第２の形態でいう流動パラフィンについて説明する。パラフィンとは、非揮発性の精製した飽和炭化水素の混合物である。炭化水素化合物の一種で、炭素原子の数が２０以上のアルカン（一般式がＣｎＨ２ｎ＋２との鎖式飽和炭化水素）の総称である。通常、パラフィンは均一でなく、さまざまな炭素鎖のものが混ざっている。パラフィンのなかで、炭素鎖が長いものを多く含むものは固体状で、「石油ワックス」と呼ばれる。一方、炭素鎖に短いものが多く含まれるものは、常温常圧で液状であり、「流動パラフィン」(liquid paraffin)と呼ばれる。第２の形態では、流動パラフィンを用いる。
第２の形態では、市販されているパラフィン系養生剤を用いることができる。その具体例としては、例えば、ポゾリス物産社製「マスターキュア」や、フォスロック社製「コンキュアー」などを挙げることができる。 The liquid paraffin said in a 2nd form is demonstrated. Paraffin is a mixture of non-volatile refined saturated hydrocarbons. It is a kind of hydrocarbon compound, and it is a general term for alkanes having 20 or more carbon atoms (chain saturated hydrocarbons having a general formula of C n H 2 n + 2 ). Paraffins are usually not homogeneous and are mixed with various carbon chains. Among paraffins, those containing a large amount of long carbon chains are solid and called "petroleum wax". On the other hand, those containing many short carbon chains are liquid at normal temperature and pressure and are called "liquid paraffin". In the second form, liquid paraffin is used.
In the second form, commercially available paraffin based curing agents can be used. Specific examples thereof include, for example, "Master Cure" manufactured by Pozzolis Corporation, and "Concure" manufactured by Foslock.
第２の形態では、市販されているパラフィン系養生剤を用いることができる。その具体例としては、例えば、ポゾリス物産社製「マスターキュア」や、フォスロック社製「コンキュアー」などを挙げることができる。 The liquid paraffin said in a 2nd form is demonstrated. Paraffin is a mixture of non-volatile refined saturated hydrocarbons. It is a kind of hydrocarbon compound, and it is a general term for alkanes having 20 or more carbon atoms (chain saturated hydrocarbons having a general formula of C n H 2 n + 2 ). Paraffins are usually not homogeneous and are mixed with various carbon chains. Among paraffins, those containing a large amount of long carbon chains are solid and called "petroleum wax". On the other hand, those containing many short carbon chains are liquid at normal temperature and pressure and are called "liquid paraffin". In the second form, liquid paraffin is used.
In the second form, commercially available paraffin based curing agents can be used. Specific examples thereof include, for example, "Master Cure" manufactured by Pozzolis Corporation, and "Concure" manufactured by Foslock.
第２の形態でいう硫酸アルミニウムとは、一般式Ａｌ２（ＳＯ４）３・ｎＨ２Ｏで表され、式中のｎは０～１８の範囲にある。様々な結晶水の硫酸アルミニウムが存在するが、第２の形態ではいずれのものも使用可能である。
The aluminum sulfate in the second form is represented by the general formula Al 2 (SO 4 ) 3 .nH 2 O, and n in the formula is in the range of 0 to 18. There are various crystal waters of aluminum sulfate, but in the second form any can be used.
硫酸アルミニウムは粉末で、その粒度は限定されるのではないが、通常、５００μｍ以下の粒子が好ましく、３２５μｍ以下の粒子がより好ましい。硫酸アルミニウムの粒度が５００μｍを超えると、コテ仕上げ性が悪くなる場合や、コテ仕上げ後のブリーディングが収まらない場合がある。
なお、本明細書における「粒度」は、篩分けにより求めることができる。 Aluminum sulfate is a powder, and its particle size is not limited, but particles of 500 μm or less are usually preferable, and particles of 325 μm or less are more preferable. When the particle size of aluminum sulfate exceeds 500 μm, the finish of the iron may be deteriorated or bleeding after the iron may not be settled.
The "particle size" in the present specification can be determined by sieving.
なお、本明細書における「粒度」は、篩分けにより求めることができる。 Aluminum sulfate is a powder, and its particle size is not limited, but particles of 500 μm or less are usually preferable, and particles of 325 μm or less are more preferable. When the particle size of aluminum sulfate exceeds 500 μm, the finish of the iron may be deteriorated or bleeding after the iron may not be settled.
The "particle size" in the present specification can be determined by sieving.
第２の形態でいうカリウムミョウバンとはミョウバンの一種で、カリウムイオン、水和アルミニウムイオン及び硫酸イオンを含む複塩である。一般式ＡｌＫ（ＳＯ４）２・ｎＨ２Ｏで表され、式中のｎが０～１２のいずれのものも使用可能である。第２の形態では、加熱により結晶水を失ったものも使用可能である。
The potassium alum referred to in the second form is a kind of alum and is a double salt containing potassium ion, hydrated aluminum ion and sulfate ion. It is represented by the general formula AlK (SO 4 ) 2 .nH 2 O, and n in the formula can be any of 0-12. In the second form, it is also possible to use one which has lost crystal water by heating.
カリウムミョウバンは粉末で、その粒度は限定されるのではないが、通常、５００μｍ以下の粒子が好ましく、３２５μｍ以下の粒子がより好ましい。カリウムミョウバンの粒度が５００μｍを超えると、コテ仕上げ性が悪くなる場合や、コテ仕上げ後のブリーディングが収まらない場合がある。
Potassium alum is a powder, and its particle size is not limited, but particles of 500 μm or less are usually preferable, and particles of 325 μm or less are more preferable. When the particle size of potassium alum exceeds 500 μm, the finish of the iron may be deteriorated or bleeding after the iron may not be settled.
第２の形態のコテ仕上げ剤における流動パラフィンと、硫酸アルミニウム及び／又はカリウムミョウバンとの合計は、良好な効果を発現する観点から、９０質量％以上であることが好ましく、９５質量％であることより好ましく、１００質量％であることがさらに好ましい。
The total of liquid paraffin and aluminum sulfate and / or potassium alum in the second form finish is preferably 90% by mass or more, and 95% by mass from the viewpoint of exhibiting a good effect. More preferably, it is 100 mass%.
第２の形態のコテ仕上げ剤の使用量は特に限定されるものではないが、通常、コンクリート１ｍ２当たり、コテ仕上げ剤５０ｇ～５００ｇの範囲で使用することが好ましく、１００ｇ～３００ｇがより好ましい。５０ｇ未満では本発明の効果、すなわち、コテ仕上げ性とブリーディングの抑制効果が十分でない場合があり、一方、５００ｇを超えても更なる効果の増進が期待できない場合がある。
The amount of use of the finish of the second aspect is not particularly limited, but generally, it is preferably used in the range of 50 g to 500 g of the finish per m 2 of concrete, and more preferably 100 g to 300 g. If the amount is less than 50 g, the effect of the present invention, ie, the effect of suppressing the finish and bleeding may not be sufficient. If the amount exceeds 500 g, further enhancement of the effect may not be expected.
第２の形態のコテ仕上げ剤を使用するタイミングは、コンクリート打設後から凝結の始発前までのいずれのタイミングでも可能であるが、業務効率の観点から、コンクリート打設後、できるだけ早いタイミングで使用することが望ましく、コンクリート打設後、２時間以内に使用することが好ましく、１時間以内がより好ましい。
The second form of iron finishing agent can be used at any timing after concrete placement and before the start of setting, but from the viewpoint of work efficiency, it can be used as soon as possible after concrete placement. It is desirable to use it within 2 hours after placing concrete, more preferably within 1 hour.
第２の形態のコテ仕上げ剤は、あらゆるコンクリートに使用可能であり、セメントの種類に影響されるものではない。セメントとしては、例えば、普通、早強、超早強、低熱、及び中庸熱などの各種ポルトランドセメントや、これらポルトランドセメントに、高炉スラグ、フライアッシュ又はシリカを混合した各種混合セメント、石灰石粉末や高炉徐冷スラグ微粉末などを混合したフィラーセメント、都市ゴミ焼却灰や下水汚泥焼却灰を原料として製造された環境調和型セメント（エコセメント）、並びに、カルシウムフロロアルミネート系、アウイン系、カルシウムアルミネート系などの超速硬セメントを挙げることができる。
The second form of cotton finish can be used for any concrete and is not influenced by the type of cement. Examples of cement include various Portland cements such as normal, early strength, ultra early strength, low heat and moderate heat, and various mixed cements obtained by mixing blast furnace slag, fly ash or silica with these portland cements, limestone powder or blast furnace Filler cement mixed with slowly cooled slag fine powder, environment-friendly cement (Ecocement) manufactured from municipal waste incineration ash and sewage sludge incineration ash, and calcium fluoroaluminate, auin, calcium aluminate And super rapid-hardening cements such as cement.
以下、実施例により本発明を詳細に説明するが、本発明はこれらに限定されるものではない。
Hereinafter, the present invention will be described in detail by way of examples, but the present invention is not limited thereto.
［第１の形態に係る実施例］
（実験例１Ａ）
単位セメント量３００ｋｇ／ｍ３、Ｗ／Ｃ＝５５％、ｓ／ａ＝４７％、空気量４．５％、スランプ１２ｃｍ、減水剤添加率＝セメント×０．４％、のコンクリートを、５０リットルの２軸ミキサを用いて作製した。
さらに、コンクリート用コテ仕上げ剤を、コンクリートの練り上げが完了した２軸ミキサ内に６ｋｇ／ｍ３投入し３０秒混和した。コテ仕上げ時間、コンクリート表面の目視観察結果、コンクリートの流動保持性、圧縮強度を表１に示す。
試験は、５℃、湿度６０％の恒温室内にて実施した。 [Example according to the first embodiment]
(Experimental example 1A)
Unit weight of cement 300 kg / m 3 , W / C = 55%, s / a = 47%, air amount 4.5%, slump 12 cm, water reductant addition rate = cement × 0.4%, 50 liters of concrete The two-axis mixer of
Furthermore, 6 kg / m 3 was introduced into the biaxial mixer in which kneading of the concrete was completed, and mixed for 30 seconds. Table 1 shows the iron finishing time, the results of visual observation of the surface of the concrete, and the flow retention and compressive strength of the concrete.
The test was carried out in a temperature-controlled room at 5 ° C. and 60% humidity.
（実験例１Ａ）
単位セメント量３００ｋｇ／ｍ３、Ｗ／Ｃ＝５５％、ｓ／ａ＝４７％、空気量４．５％、スランプ１２ｃｍ、減水剤添加率＝セメント×０．４％、のコンクリートを、５０リットルの２軸ミキサを用いて作製した。
さらに、コンクリート用コテ仕上げ剤を、コンクリートの練り上げが完了した２軸ミキサ内に６ｋｇ／ｍ３投入し３０秒混和した。コテ仕上げ時間、コンクリート表面の目視観察結果、コンクリートの流動保持性、圧縮強度を表１に示す。
試験は、５℃、湿度６０％の恒温室内にて実施した。 [Example according to the first embodiment]
(Experimental example 1A)
Unit weight of cement 300 kg / m 3 , W / C = 55%, s / a = 47%, air amount 4.5%, slump 12 cm, water reductant addition rate = cement × 0.4%, 50 liters of concrete The two-axis mixer of
Furthermore, 6 kg / m 3 was introduced into the biaxial mixer in which kneading of the concrete was completed, and mixed for 30 seconds. Table 1 shows the iron finishing time, the results of visual observation of the surface of the concrete, and the flow retention and compressive strength of the concrete.
The test was carried out in a temperature-controlled room at 5 ° C. and 60% humidity.
（使用材料）
セメント：普通ポルトランドセメント、デンカ株式会社製
細骨材：姫川産川砂（密度：２．６２ｇ／ｍ３）
粗骨材：姫川産砕石（密度：２．６０ｇ／ｍ３）
減水剤：リグニン系減水剤、ＧＣＰ株式会社製
水：水道水
ギ酸Ａ：ギ酸カルシウム、試薬
ギ酸Ｂ：ギ酸、試薬
ギ酸Ｃ：ギ酸ナトリウム、試薬
ギ酸Ｄ：ギ酸カリウム、試薬
ギ酸Ｅ：ギ酸アンモニウム、試薬
粘土鉱物Ａ：セピオライト、巴工業株式会社製、商品名「ＩＧＳ」
粘土鉱物Ｂ：ベントナイト、株式会社ホージュン製、商品名「榛名」 (Material used)
Cement: Ordinary portland cement, fine aggregate made by Denka Co., Ltd .: Himekawa-made river sand (density: 2.62 g / m 3 )
Coarse aggregate: Crushed stone from Himekawa (density: 2.60 g / m 3 )
Water reducing agent: Lignin based water reducing agent, water made by GCP Ltd .: tap water formate A: calcium formate, reagent formate B: formate, reagent formate C: sodium formate, reagent formate D: potassium formate, reagent formate E: ammonium formate, reagent Clay mineral A: sepiolite, manufactured by Sakai Industry Co., Ltd., trade name "IGS"
Clay Mineral B: Bentonite, manufactured by Hojun Co., Ltd., trade name "Hana"
セメント：普通ポルトランドセメント、デンカ株式会社製
細骨材：姫川産川砂（密度：２．６２ｇ／ｍ３）
粗骨材：姫川産砕石（密度：２．６０ｇ／ｍ３）
減水剤：リグニン系減水剤、ＧＣＰ株式会社製
水：水道水
ギ酸Ａ：ギ酸カルシウム、試薬
ギ酸Ｂ：ギ酸、試薬
ギ酸Ｃ：ギ酸ナトリウム、試薬
ギ酸Ｄ：ギ酸カリウム、試薬
ギ酸Ｅ：ギ酸アンモニウム、試薬
粘土鉱物Ａ：セピオライト、巴工業株式会社製、商品名「ＩＧＳ」
粘土鉱物Ｂ：ベントナイト、株式会社ホージュン製、商品名「榛名」 (Material used)
Cement: Ordinary portland cement, fine aggregate made by Denka Co., Ltd .: Himekawa-made river sand (density: 2.62 g / m 3 )
Coarse aggregate: Crushed stone from Himekawa (density: 2.60 g / m 3 )
Water reducing agent: Lignin based water reducing agent, water made by GCP Ltd .: tap water formate A: calcium formate, reagent formate B: formate, reagent formate C: sodium formate, reagent formate D: potassium formate, reagent formate E: ammonium formate, reagent Clay mineral A: sepiolite, manufactured by Sakai Industry Co., Ltd., trade name "IGS"
Clay Mineral B: Bentonite, manufactured by Hojun Co., Ltd., trade name "Hana"
（測定方法）
コテ仕上げ時間：３０×３０×１０ｃｍの型枠を２０個準備してコンクリートを充填し、コンクリートの打設から１時間ごとに１つずつ金コテでコンクリート表面のコテ仕上げを行った。コテ仕上げから２４時間後の供試体表面の状況を観察し、（１）コンクリート表面が平滑であること、並びに、（２）コンクリート型枠上端からの沈下が見られないこと、の２つの条件を満たす供試体から、コンクリートの打設からコテ仕上げが可能となるまでの時間を決定した。
コンクリート表面の目視観察：コテ仕上げ時間を決定した供試体の表面を観察し、コンクリート表面に白華物が見られないものを○、白華物が見られたものを×とした。
コンクリートの流動保持性：コンクリートの打ち込み直後から９０分後のスランプ又はスランプフロー値を測定し、コテ仕上げ剤を添加しないコンクリートのスランプ値又はスランプフロー値を基準値（０）として、基準値対する増減（±）で表した。
圧縮強度：φ１０×２０ｃｍの型枠に充てんしたコンクリートについて、ＪＩＳ Ａ １１０８「コンクリートの圧縮強度試験方法」に準拠して、材齢２４時間で測定した。コテ仕上げ剤を添加しないコンクリートの圧縮強度を１００として、相対値（％）で表した。 (Measuring method)
Totte finish time: 20 molds of 30 × 30 × 10 cm were prepared and filled with concrete, and the concrete surface was finished with a gold swatch every one hour from pouring of the concrete. Observe the condition of the surface of the specimen 24 hours after finishing the iron, (1) that the surface of the concrete is smooth, and (2) that no sinking from the top of the concrete form is observed. From the filled specimens, the time from placing concrete to making it possible to finish was determined.
Visual observation of the surface of the concrete: The surface of the sample for which the finishing time was determined was observed, and those with no visible white matter on the surface of the concrete were regarded as ○, and those with the apparent white matter as ×.
Fluid flow retention of concrete: Measure the slump or slump flow value after 90 minutes from immediately after pouring concrete, and increase or decrease the slump value or slump flow value of the concrete without adding a trowel finish to the reference value (0) It represented by (±).
Compressive strength: The concrete filled in a form of φ10 × 20 cm was measured at a material age of 24 hours in accordance with JIS A 1108 “Test method for compressive strength of concrete”. The compressive strength of the concrete which does not add the iron finishing agent was set to 100, and it represented by the relative value (%).
コテ仕上げ時間：３０×３０×１０ｃｍの型枠を２０個準備してコンクリートを充填し、コンクリートの打設から１時間ごとに１つずつ金コテでコンクリート表面のコテ仕上げを行った。コテ仕上げから２４時間後の供試体表面の状況を観察し、（１）コンクリート表面が平滑であること、並びに、（２）コンクリート型枠上端からの沈下が見られないこと、の２つの条件を満たす供試体から、コンクリートの打設からコテ仕上げが可能となるまでの時間を決定した。
コンクリート表面の目視観察：コテ仕上げ時間を決定した供試体の表面を観察し、コンクリート表面に白華物が見られないものを○、白華物が見られたものを×とした。
コンクリートの流動保持性：コンクリートの打ち込み直後から９０分後のスランプ又はスランプフロー値を測定し、コテ仕上げ剤を添加しないコンクリートのスランプ値又はスランプフロー値を基準値（０）として、基準値対する増減（±）で表した。
圧縮強度：φ１０×２０ｃｍの型枠に充てんしたコンクリートについて、ＪＩＳ Ａ １１０８「コンクリートの圧縮強度試験方法」に準拠して、材齢２４時間で測定した。コテ仕上げ剤を添加しないコンクリートの圧縮強度を１００として、相対値（％）で表した。 (Measuring method)
Totte finish time: 20 molds of 30 × 30 × 10 cm were prepared and filled with concrete, and the concrete surface was finished with a gold swatch every one hour from pouring of the concrete. Observe the condition of the surface of the specimen 24 hours after finishing the iron, (1) that the surface of the concrete is smooth, and (2) that no sinking from the top of the concrete form is observed. From the filled specimens, the time from placing concrete to making it possible to finish was determined.
Visual observation of the surface of the concrete: The surface of the sample for which the finishing time was determined was observed, and those with no visible white matter on the surface of the concrete were regarded as ○, and those with the apparent white matter as ×.
Fluid flow retention of concrete: Measure the slump or slump flow value after 90 minutes from immediately after pouring concrete, and increase or decrease the slump value or slump flow value of the concrete without adding a trowel finish to the reference value (0) It represented by (±).
Compressive strength: The concrete filled in a form of φ10 × 20 cm was measured at a material age of 24 hours in accordance with JIS A 1108 “Test method for compressive strength of concrete”. The compressive strength of the concrete which does not add the iron finishing agent was set to 100, and it represented by the relative value (%).
表１より、本発明のコンクリート用コテ仕上げ剤は、５℃の環境にあるスランプ１２ｃｍのコンクリートに関して、コテ仕上げ時間を短縮でき、コンクリート表面に白華物が見られず、コンクリートの流動性に悪影響を与えず、さらに、圧縮強度が増進することがわかる。
From Table 1, the finish for concrete according to the present invention can shorten the finish time for concrete with a slump of 12 cm in a 5 ° C. environment, and no whitening is seen on the surface of the concrete, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
（実験例２Ａ）
試験を２０℃、湿度６０％の恒温室内にて実施したこと以外は、実験例１Ａと同様に行った。結果を表２示す。 (Experimental example 2A)
The experiment was performed in the same manner as in Experimental Example 1A except that the test was performed in a constant temperature room at 20 ° C. and a humidity of 60%. The results are shown in Table 2.
試験を２０℃、湿度６０％の恒温室内にて実施したこと以外は、実験例１Ａと同様に行った。結果を表２示す。 (Experimental example 2A)
The experiment was performed in the same manner as in Experimental Example 1A except that the test was performed in a constant temperature room at 20 ° C. and a humidity of 60%. The results are shown in Table 2.
表２より，本発明のコンクリート用コテ仕上げ剤は、２０℃の環境にあるスランプ１２ｃｍのコンクリートに関して、コテ仕上時間を短縮でき、コンクリート表面に白華物が見られず、コンクリートの流動性に悪影響を与えず、さらに、圧縮強度を増進することがわかる。
According to Table 2, the finish for iron for concrete according to the present invention can shorten the time for finishing iron for concrete with a slump of 12 cm in an environment of 20 ° C., and no whitening is observed on the surface of the concrete, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
（実験例３Ａ）
スランプフローが６５ｃｍの高流動コンクリートとしたこと以外は，実験例１Ａと同様の評価を行った。結果を表３に示す。
コンクリート配合は、単位セメント量３００ｋｇ／ｍ３、単位フライアッシュ量２２０ｋｇ／ｍ３、水結合材比＝４０％、ｓ／ａ＝５０％、空気量５％、スランプフロー６５ｃｍ、減水剤添加率＝結合材×１．５％、とした。 (Experimental example 3A)
The same evaluation as in Experimental Example 1A was carried out except that the high flow concrete with a slump flow of 65 cm was used. The results are shown in Table 3.
Concrete composition is unit cement amount 300 kg / m 3 , unit fly ash amount 220 kg / m 3, water binder ratio = 40%, s / a = 50%, air amount 5%, slump flow 65 cm, water reducing agent addition ratio = bond Material x 1.5%.
スランプフローが６５ｃｍの高流動コンクリートとしたこと以外は，実験例１Ａと同様の評価を行った。結果を表３に示す。
コンクリート配合は、単位セメント量３００ｋｇ／ｍ３、単位フライアッシュ量２２０ｋｇ／ｍ３、水結合材比＝４０％、ｓ／ａ＝５０％、空気量５％、スランプフロー６５ｃｍ、減水剤添加率＝結合材×１．５％、とした。 (Experimental example 3A)
The same evaluation as in Experimental Example 1A was carried out except that the high flow concrete with a slump flow of 65 cm was used. The results are shown in Table 3.
Concrete composition is unit cement amount 300 kg / m 3 , unit fly ash amount 220 kg / m 3, water binder ratio = 40%, s / a = 50%, air amount 5%, slump flow 65 cm, water reducing agent addition ratio = bond Material x 1.5%.
（使用材料）
フライアッシュ：ＪＩＳ Ａ ６２０１「コンクリート用フライアッシュ」に規定されるフライアッシュＩ種、四国電力株式会社製
減水剤：ポリカルボン酸塩系高性能ＡＥ減水剤、ＧＣＰ株式会社製 (Material used)
Fly ash: Fly ash class I as defined in JIS A 6201 "fly ash for concrete", water reducing agent manufactured by Shikoku Electric Power Co., Ltd .: polycarboxylate based high performance AE water reducing agent, manufactured by GCP Ltd.
フライアッシュ：ＪＩＳ Ａ ６２０１「コンクリート用フライアッシュ」に規定されるフライアッシュＩ種、四国電力株式会社製
減水剤：ポリカルボン酸塩系高性能ＡＥ減水剤、ＧＣＰ株式会社製 (Material used)
Fly ash: Fly ash class I as defined in JIS A 6201 "fly ash for concrete", water reducing agent manufactured by Shikoku Electric Power Co., Ltd .: polycarboxylate based high performance AE water reducing agent, manufactured by GCP Ltd.
表３より、本発明のコンクリート用コテ仕上げ剤は、５℃の環境にあるスランプフロー６５ｃｍのコンクリートに関して、コテ仕上げ時間を短縮でき、コンクリート表面に白華物が見られず、コンクリートの流動性に悪影響を与えず、さらに、圧縮強度を増進することがわかる。
From Table 3, the concrete finish for concrete of the present invention can shorten the finish time for concrete with slump flow of 65 cm in an environment of 5 ° C., no whitening is seen on the surface of the concrete, and the fluidity of the concrete Further, it can be seen that the compressive strength is enhanced without adversely affecting.
（実験例４Ａ）
試験を２０℃、湿度６０％の恒温室内において実施したこと以外は、実験例３Ａと同様に行った。結果を表４示す。 (Experimental example 4A)
The experiment was performed in the same manner as in Experimental Example 3A except that the test was performed in a temperature-controlled room at 20 ° C. and a humidity of 60%. The results are shown in Table 4.
試験を２０℃、湿度６０％の恒温室内において実施したこと以外は、実験例３Ａと同様に行った。結果を表４示す。 (Experimental example 4A)
The experiment was performed in the same manner as in Experimental Example 3A except that the test was performed in a temperature-controlled room at 20 ° C. and a humidity of 60%. The results are shown in Table 4.
表４より、本発明のコンクリート用コテ仕上げ剤は、２０℃の環境にあるスランプフロー６５ｃｍのコンクリートに関して、コテ仕上げ時間を短縮でき、コンクリート表面に白華物が見られず、コンクリートの流動性に悪影響を与えず、さらに、圧縮強度を増進することがわかる。
From Table 4, the concrete finish for concrete of the present invention can shorten the finish time for concrete with slump flow of 65 cm in an environment of 20 ° C., and no whitening is seen on the surface of the concrete, and the fluidity of the concrete Further, it can be seen that the compressive strength is enhanced without adversely affecting.
（実験例５Ａ）
実験Ｎｏ．１－４のコンクリート用コテ仕上げ剤の混和量を変化させたこと以外は、実験例１Ａと同様に行った。結果を表５に示す。 (Experimental example 5A)
Experiment No. The same procedure as in Experimental Example 1A was performed except that the mixing amount of the finishing agent for concrete of 1 to 4 was changed. The results are shown in Table 5.
実験Ｎｏ．１－４のコンクリート用コテ仕上げ剤の混和量を変化させたこと以外は、実験例１Ａと同様に行った。結果を表５に示す。 (Experimental example 5A)
Experiment No. The same procedure as in Experimental Example 1A was performed except that the mixing amount of the finishing agent for concrete of 1 to 4 was changed. The results are shown in Table 5.
表５より、本発明のコンクリート用コテ仕上げ剤は、５℃の環境にあるスランプ１２ｃｍのコンクリートに関して、コテ仕上げ時間を短縮でき、コンクリート表面に白華物が見られず、コンクリートの流動性に悪影響を与えず、さらに、圧縮強度を増進することがわかる。
From Table 5, it is possible to shorten the finishing time for concrete with a slump of 12 cm in a 5 ° C. environment, and no whitening is observed on the surface of the concrete, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
（実験例６Ａ）
実験Ｎｏ．２－５のコンクリート用コテ仕上げ剤の混和量を変化させたこと以外は、実験例２Ａと同様に行った。結果を表６に示す。 (Experimental example 6A)
Experiment No. The same procedure as in Experimental Example 2A was followed, except that the blending amount of the concrete finish for concrete of 2 to 5 was changed. The results are shown in Table 6.
実験Ｎｏ．２－５のコンクリート用コテ仕上げ剤の混和量を変化させたこと以外は、実験例２Ａと同様に行った。結果を表６に示す。 (Experimental example 6A)
Experiment No. The same procedure as in Experimental Example 2A was followed, except that the blending amount of the concrete finish for concrete of 2 to 5 was changed. The results are shown in Table 6.
表６より、本発明のコンクリート用コテ仕上げ剤は、２０℃の環境にあるスランプ１２ｃｍのコンクリートに関して、コテ仕上げ時間を短縮でき、コンクリート表面に白華物が見られず、コンクリートの流動性に悪影響を与えず、さらに、圧縮強度を増進することがわかる。
From Table 6, it can be seen that the iron finishing agent for concrete of the present invention can shorten the iron finishing time for concrete with a slump of 12 cm in a 20 ° C. environment, and no whitening is seen on the concrete surface, which adversely affects the fluidity of the concrete. Furthermore, it can be seen that the compressive strength is enhanced.
［第２の形態に係る実施例］
（実験例１Ｂ）
単位セメント量３１０ｋｇ／ｍ３、単位水量１７５ｋｇ／ｍ３、ｓ／ａ＝４３％、空気量４．５％、スランプ１８±２．５ｃｍのコンクリートを調製した。このコンクリートを用いて厚さ３０ｃｍの床を造成し、打設３０分後に表１に示すコテ仕上げ剤を、コンクリート１ｍ２当たり２００ｇ用いて左官作業（コテ仕上げ）を行った。コテ仕上げ性、コテ仕上げ後のブリーディングの発生の有無、及びプラスティクひび割れ抵抗性を評価した。結果を表７に示す。 [Example according to the second embodiment]
(Experimental example 1B)
A concrete with a unit cement amount of 310 kg / m 3 , a unit water amount of 175 kg / m 3 , a s / a = 43%, an air amount of 4.5%, and a slump of 18 ± 2.5 cm was prepared. Using this concrete, a floor of 30 cm in thickness was constructed, and after 30 minutes of casting, a plastering operation (iron finishing) was carried out using a trowel finish shown in Table 1 using 200 g per 1 m 2 of concrete. The finish quality, the presence or absence of bleeding after finish, and the plastic crack resistance were evaluated. The results are shown in Table 7.
（実験例１Ｂ）
単位セメント量３１０ｋｇ／ｍ３、単位水量１７５ｋｇ／ｍ３、ｓ／ａ＝４３％、空気量４．５％、スランプ１８±２．５ｃｍのコンクリートを調製した。このコンクリートを用いて厚さ３０ｃｍの床を造成し、打設３０分後に表１に示すコテ仕上げ剤を、コンクリート１ｍ２当たり２００ｇ用いて左官作業（コテ仕上げ）を行った。コテ仕上げ性、コテ仕上げ後のブリーディングの発生の有無、及びプラスティクひび割れ抵抗性を評価した。結果を表７に示す。 [Example according to the second embodiment]
(Experimental example 1B)
A concrete with a unit cement amount of 310 kg / m 3 , a unit water amount of 175 kg / m 3 , a s / a = 43%, an air amount of 4.5%, and a slump of 18 ± 2.5 cm was prepared. Using this concrete, a floor of 30 cm in thickness was constructed, and after 30 minutes of casting, a plastering operation (iron finishing) was carried out using a trowel finish shown in Table 1 using 200 g per 1 m 2 of concrete. The finish quality, the presence or absence of bleeding after finish, and the plastic crack resistance were evaluated. The results are shown in Table 7.
（使用材料）
セメント：普通ポルトランドセメント、市販品、ブレーン比表面積３２００ｃｍ２／ｇ。
粗骨材：砕石、密度２．６４ｇ／ｃｍ３。
細骨材：海砂を洗浄したもの。塩化物含有量０．０２％。密度２．６２ｇ／ｃｍ３。
水：水道水
コテ仕上げ剤Ａ：市販のパラフィン系養生剤、ポゾリス物産社製、商品名「マスターキュア」
コテ仕上げ剤Ｂ：市販の硫酸アルミニウム、１８水塩（粉末）、粒度３２５μｍ以下
コテ仕上げ剤Ｃ：市販のカリウムミョウバン、１２水塩（粉末）、粒度３２５μｍ以下
コテ仕上げ剤Ｄ：コテ仕上げ剤Ａ７０部とコテ仕上げ剤Ｂ３０部
コテ仕上げ剤Ｅ：コテ仕上げ剤Ａ７０部とコテ仕上げ剤Ｃ３０部 (Material used)
Cement: Ordinary portland cement, commercially available product, Blaine specific surface area 3200 cm 2 / g.
Coarse aggregate: crushed stone, density 2.64 g / cm 3 .
Fine aggregate: washed sea sand. Chloride content 0.02%. Density 2.62 g / cm 3 .
Water: Tap water finish A: Commercial paraffinic curing agent, manufactured by Pozzolith Co., Ltd., trade name "Master Cure"
Iron finish B: Commercial aluminum sulfate, 18 hydrate (powder), particle size 325 μm or less iron finish C: Commercial potassium alum, 12 water salt (powder), particle size 325 μm or less iron finish D: Iron finish A 70 parts And iron finish B 30 parts iron finish E: iron finish 70 parts and iron finish C 30 parts
セメント：普通ポルトランドセメント、市販品、ブレーン比表面積３２００ｃｍ２／ｇ。
粗骨材：砕石、密度２．６４ｇ／ｃｍ３。
細骨材：海砂を洗浄したもの。塩化物含有量０．０２％。密度２．６２ｇ／ｃｍ３。
水：水道水
コテ仕上げ剤Ａ：市販のパラフィン系養生剤、ポゾリス物産社製、商品名「マスターキュア」
コテ仕上げ剤Ｂ：市販の硫酸アルミニウム、１８水塩（粉末）、粒度３２５μｍ以下
コテ仕上げ剤Ｃ：市販のカリウムミョウバン、１２水塩（粉末）、粒度３２５μｍ以下
コテ仕上げ剤Ｄ：コテ仕上げ剤Ａ７０部とコテ仕上げ剤Ｂ３０部
コテ仕上げ剤Ｅ：コテ仕上げ剤Ａ７０部とコテ仕上げ剤Ｃ３０部 (Material used)
Cement: Ordinary portland cement, commercially available product, Blaine specific surface area 3200 cm 2 / g.
Coarse aggregate: crushed stone, density 2.64 g / cm 3 .
Fine aggregate: washed sea sand. Chloride content 0.02%. Density 2.62 g / cm 3 .
Water: Tap water finish A: Commercial paraffinic curing agent, manufactured by Pozzolith Co., Ltd., trade name "Master Cure"
Iron finish B: Commercial aluminum sulfate, 18 hydrate (powder), particle size 325 μm or less iron finish C: Commercial potassium alum, 12 water salt (powder), particle size 325 μm or less iron finish D: Iron finish A 70 parts And iron finish B 30 parts iron finish E: iron finish 70 parts and iron finish C 30 parts
（試験方法）
コテ仕上げ性：コテにへばり付く場合は×、コテにはへばり付かないが、コンクリート表面が引っ張られて表面が滑らかに仕上がらない場合は△、コテはけ性が良好で、コンクリート表面も滑らかに仕上がる場合は○とした。
ブリーディングの有無：コテ仕上げ後に明らかなブリーディングが発生した場合は×、コテ仕上げ後から凝結までの間に“にじみ”が見られた場合は△、“にじみ”も認められない場合は○とした。
プラスチックひび割れ抵抗性：コテ仕上げ作業後から送風機を用いて、ビューフォート風力階級３の軟風（４．５ｍ／ｓ）を当て、ひび割れの発生状況を確認した。コンクリート１ｍ２当たり複数のひび割れが発生した場合は×、１本発生した場合は△、ひび割れが発生しなかった場合は○とした。 (Test method)
Finishing property: x when sticking to the iron, not sticking to the iron, but when the surface of the concrete is pulled and the surface is not finished smooth △, the iron has good wettability and the concrete surface is also smooth If finished, it was ○.
Presence or absence of bleeding: × when obvious bleeding occurred after finishing iron, Δ when “bleeding” was observed after finishing iron after coagulation, and ○ when no bleeding was observed.
Plastic crack resistance: After finishing using a trowel operation, a blower was used and a soft wind (4.5 m / s) of Beaufort wind class 3 was applied to confirm the occurrence of cracks. × When concrete 1 m 2 per multiple cracking occurs, 1 if this occurred △, when the crack is not generated was ○.
コテ仕上げ性：コテにへばり付く場合は×、コテにはへばり付かないが、コンクリート表面が引っ張られて表面が滑らかに仕上がらない場合は△、コテはけ性が良好で、コンクリート表面も滑らかに仕上がる場合は○とした。
ブリーディングの有無：コテ仕上げ後に明らかなブリーディングが発生した場合は×、コテ仕上げ後から凝結までの間に“にじみ”が見られた場合は△、“にじみ”も認められない場合は○とした。
プラスチックひび割れ抵抗性：コテ仕上げ作業後から送風機を用いて、ビューフォート風力階級３の軟風（４．５ｍ／ｓ）を当て、ひび割れの発生状況を確認した。コンクリート１ｍ２当たり複数のひび割れが発生した場合は×、１本発生した場合は△、ひび割れが発生しなかった場合は○とした。 (Test method)
Finishing property: x when sticking to the iron, not sticking to the iron, but when the surface of the concrete is pulled and the surface is not finished smooth △, the iron has good wettability and the concrete surface is also smooth If finished, it was ○.
Presence or absence of bleeding: × when obvious bleeding occurred after finishing iron, Δ when “bleeding” was observed after finishing iron after coagulation, and ○ when no bleeding was observed.
Plastic crack resistance: After finishing using a trowel operation, a blower was used and a soft wind (4.5 m / s) of Beaufort wind class 3 was applied to confirm the occurrence of cracks. × When concrete 1 m 2 per multiple cracking occurs, 1 if this occurred △, when the crack is not generated was ○.
表７より、本発明のコテ仕上げ剤を用いた場合のみ、コテ仕上げ性に優れ、かつ、ブリーディング及びプラスティックひび割れが発生しないことがわかる。一方、流動パラフィンだけを用いた場合には、ブリーディング及びプラスティックひび割れが発生した。硫酸アルミニウムだけを用いた場合には、コテ仕上げ性が悪く、プラスティックひび割れが発生した。カリウムミョウバンだけを用いた場合は、コテ仕上げ性が悪く、プラスティックひび割れが発生した。
又、コテ仕上げ剤を使用しない場合には、ブリーディング及びプラスティックひび割れが発生した上に、コテ仕上げ性も良くなかった。 From Table 7, it can be seen that only when using the finish of the present invention, the finish is excellent and that bleeding and plastic cracking do not occur. On the other hand, bleeding and plastic cracking occurred when only liquid paraffin was used. When only aluminum sulfate was used, the finish was poor and plastic cracking occurred. When only potassium alum was used, the finish was poor and plastic cracking occurred.
Also, in the case of not using the iron finish, bleeding and plastic cracking occurred, and the iron finish was not good.
又、コテ仕上げ剤を使用しない場合には、ブリーディング及びプラスティックひび割れが発生した上に、コテ仕上げ性も良くなかった。 From Table 7, it can be seen that only when using the finish of the present invention, the finish is excellent and that bleeding and plastic cracking do not occur. On the other hand, bleeding and plastic cracking occurred when only liquid paraffin was used. When only aluminum sulfate was used, the finish was poor and plastic cracking occurred. When only potassium alum was used, the finish was poor and plastic cracking occurred.
Also, in the case of not using the iron finish, bleeding and plastic cracking occurred, and the iron finish was not good.
（実験例２Ｂ）
コテ仕上げ剤Ｄ及びコテ仕上げ剤Ｅを使用し、コンクリート打設後のコテ仕上げ剤を使用するタイミングを表８に示すように変えたこと以外は、実験例１Ｂと同様に行った。結果を表８に示す。 (Experimental example 2B)
The experiment was performed in the same manner as in Example 1B except that the timing to use the iron finish after putting concrete was changed as shown in Table 8 using the iron finish D and the iron finish E. The results are shown in Table 8.
コテ仕上げ剤Ｄ及びコテ仕上げ剤Ｅを使用し、コンクリート打設後のコテ仕上げ剤を使用するタイミングを表８に示すように変えたこと以外は、実験例１Ｂと同様に行った。結果を表８に示す。 (Experimental example 2B)
The experiment was performed in the same manner as in Example 1B except that the timing to use the iron finish after putting concrete was changed as shown in Table 8 using the iron finish D and the iron finish E. The results are shown in Table 8.
表８より、本発明のコテ仕上げ剤は、使用するタイミングを変えても効果を発揮することがわかる。
From Table 8, it can be seen that the finishing agent of the present invention exerts an effect even when the timing of use is changed.
（実験例３Ｂ）
コテ仕上げ剤Ｄ及びコテ仕上げ剤Ｅを使用し、１ｍ２当たりの使用量を表９に示すように変えたこと以外は実験例１Ｂと同様に行った。結果を表９に示す。 (Experimental example 3B)
Use the trowel finish D and trowel finish E, except that the amount per 1 m 2 was changed as shown in Table 9 were carried out in the same manner as in Experimental Example 1B. The results are shown in Table 9.
コテ仕上げ剤Ｄ及びコテ仕上げ剤Ｅを使用し、１ｍ２当たりの使用量を表９に示すように変えたこと以外は実験例１Ｂと同様に行った。結果を表９に示す。 (Experimental example 3B)
Use the trowel finish D and trowel finish E, except that the amount per 1 m 2 was changed as shown in Table 9 were carried out in the same manner as in Experimental Example 1B. The results are shown in Table 9.
表９より、本発明のコテ仕上げ剤を使用することにより、コテ仕上げ性に優れ、かつ、ブリーディングの発生及びプラスティックひび割れの発生を抑制できることがわかる。
It can be seen from Table 9 that the use of the finish according to the present invention makes it possible to improve the finish and to suppress the occurrence of bleeding and the occurrence of plastic cracking.
（実験例４Ｂ）
コテ仕上げ剤中の、流動パラフィン、硫酸アルミニウム及びカリウムミョウバンの配合割合を表１０に示すようにしたこと以外は、実験例１Ｂと同様に行った。結果を表１０に示す。 (Experimental example 4B)
The experiment was performed in the same manner as in Experimental Example 1B except that the blending ratio of liquid paraffin, aluminum sulfate and potassium alum in the finishing agent was as shown in Table 10. The results are shown in Table 10.
コテ仕上げ剤中の、流動パラフィン、硫酸アルミニウム及びカリウムミョウバンの配合割合を表１０に示すようにしたこと以外は、実験例１Ｂと同様に行った。結果を表１０に示す。 (Experimental example 4B)
The experiment was performed in the same manner as in Experimental Example 1B except that the blending ratio of liquid paraffin, aluminum sulfate and potassium alum in the finishing agent was as shown in Table 10. The results are shown in Table 10.
（使用材料）
流動パラフィン：市販のパラフィン系養生剤、ポゾリス物産社製、商品名「マスターキュア」
硫酸アルミニウム：市販の硫酸アルミニウム、１８水塩（粉末）、粒度３２５μｍ以下
カリウムミョウバン：市販のカリウムミョウバン、１２水塩（粉末）、粒度３２５μｍ以下 (Material used)
Liquid paraffin: A commercially available paraffin-based curing agent, manufactured by Pozzolith Co., Ltd., trade name "Master Cure"
Aluminum sulfate: commercially available aluminum sulfate, 18 hydrate (powder), particle size of 325 μm or less potassium alum: commercially available potassium alum, 12 hydrate (powder), particle size of 325 μm or less
流動パラフィン：市販のパラフィン系養生剤、ポゾリス物産社製、商品名「マスターキュア」
硫酸アルミニウム：市販の硫酸アルミニウム、１８水塩（粉末）、粒度３２５μｍ以下
カリウムミョウバン：市販のカリウムミョウバン、１２水塩（粉末）、粒度３２５μｍ以下 (Material used)
Liquid paraffin: A commercially available paraffin-based curing agent, manufactured by Pozzolith Co., Ltd., trade name "Master Cure"
Aluminum sulfate: commercially available aluminum sulfate, 18 hydrate (powder), particle size of 325 μm or less potassium alum: commercially available potassium alum, 12 hydrate (powder), particle size of 325 μm or less
表１０より、本発明のコテ仕上げ剤を使用することにより、コテ仕上げ性に優れ、かつ、ブリーディングの発生及びプラスティックひび割れの発生を抑制できることがわかる。
From Table 10, it can be seen that by using the finish of the present invention, the finish of the finish is excellent, and the occurrence of bleeding and the occurrence of plastic cracking can be suppressed.
From Table 10, it can be seen that by using the finish of the present invention, the finish of the finish is excellent, and the occurrence of bleeding and the occurrence of plastic cracking can be suppressed.
第１の形態のコンクリート用コテ仕上げ剤は、常温及び低温環境においてコテ仕上げ時間を短縮し、コンクリート表面も良好な状態で仕上げが可能であり、コンクリートの流動性にも悪影響を与えず、圧縮強度を増進する。特に、低温環境でコンクリート打設からコテ仕上げまでの時間を短縮できるため、土木・建築分野において好適である。
第２の形態のコテ仕上げ剤を使用することにより、コンクリートの打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能で、コテ仕上げ後はブリーディングが収まるため、左官職人の業務効率化につながり、建設現場の残業を減らすことができるといった効果を奏する。
The first form of the concrete finishing agent for concrete shortens the finishing time in normal temperature and low temperature environment, can finish with good condition of the concrete surface, and does not adversely affect the fluidity of the concrete, and the compressive strength Improve. In particular, it is suitable in the field of civil engineering and construction because it can shorten the time from concrete placement to finish in a low temperature environment.
By using the second form iron finishing agent, after putting concrete, iron finishing is possible even in a situation where bleeding continues, and bleeding is settled after iron finishing, thus improving the efficiency of plasterer's work. It has the effect of being able to reduce overtime work at the construction site.
第２の形態のコテ仕上げ剤を使用することにより、コンクリートの打設後、ブリーディングの発生が継続する状況でもコテ仕上げが可能で、コテ仕上げ後はブリーディングが収まるため、左官職人の業務効率化につながり、建設現場の残業を減らすことができるといった効果を奏する。
The first form of the concrete finishing agent for concrete shortens the finishing time in normal temperature and low temperature environment, can finish with good condition of the concrete surface, and does not adversely affect the fluidity of the concrete, and the compressive strength Improve. In particular, it is suitable in the field of civil engineering and construction because it can shorten the time from concrete placement to finish in a low temperature environment.
By using the second form iron finishing agent, after putting concrete, iron finishing is possible even in a situation where bleeding continues, and bleeding is settled after iron finishing, thus improving the efficiency of plasterer's work. It has the effect of being able to reduce overtime work at the construction site.
Claims (4)
- ギ酸又はその塩を７０質量部以上９５質量部以下、及び粘土鉱物を５質量部以上３０質量部以下含有してなるか、あるいは、流動パラフィンと、硫酸アルミニウム及び／又はカリウムミョウバンとを含有してなるコテ仕上げ剤。 Containing 70 to 95 parts by mass of formic acid or a salt thereof and 5 to 30 parts by mass of clay mineral, or containing liquid paraffin and aluminum sulfate and / or potassium alum Finish.
- コンクリート用である請求項１に記載のコテ仕上げ剤。 The iron finish according to claim 1, which is for concrete.
- 前記流動パラフィンが５０～９５質量部、並びに、前記硫酸アルミニウム及び／又は前記カリウムミョウバンが５～５０質量部である請求項１又は２に記載のコテ仕上げ剤。 The iron finish according to claim 1 or 2, wherein the liquid paraffin is 50 to 95 parts by mass, and the aluminum sulfate and / or the potassium alum is 5 to 50 parts by mass.
- コンクリートに対する前記コテ仕上げ剤の添加量が２～１０ｋｇ／ｍ３であって、練り混ぜ完了から９０分後のコンクリートのスランプ又はスランプフロー値が、コテ仕上げ剤を添加しないコンクリートに対して、スランプ値が±２ｃｍ又はスランプフロー値が±５ｃｍの範囲とする請求項１～３のいずれか１項に記載のコテ仕上げ剤の使用方法。
The slump or slump flow value of the concrete after 90 minutes of completion of mixing is 2 to 10 kg / m 3 with respect to the concrete to which the addition amount of the above-mentioned iron finish is 2 to 10 kg / m 3 , the concrete without adding the iron finish The method according to any one of claims 1 to 3, wherein the slump flow value is in the range of ± 2 cm or the slump flow value is in the range of ± 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019566523A JP7233381B2 (en) | 2018-01-22 | 2019-01-18 | Iron finishing agent and its use |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018008053 | 2018-01-22 | ||
| JP2018-008053 | 2018-01-22 | ||
| JP2018008052 | 2018-01-22 | ||
| JP2018-008052 | 2018-01-22 |
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| WO2019142906A1 true WO2019142906A1 (en) | 2019-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/001445 WO2019142906A1 (en) | 2018-01-22 | 2019-01-18 | Trowelled finishing agent and usage thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7233381B2 (en) |
| TW (1) | TW201932433A (en) |
| WO (1) | WO2019142906A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01197347A (en) * | 1988-01-30 | 1989-08-09 | Ee B C Shokai:Kk | Mortar finishing material |
| JPH08333150A (en) * | 1995-06-02 | 1996-12-17 | Ube Ind Ltd | Self-leveling cement composition |
| JP2000239609A (en) * | 1999-02-16 | 2000-09-05 | Yoshino Gypsum Co Ltd | Wet plastering material |
| JP2005089228A (en) * | 2003-09-16 | 2005-04-07 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP2009227481A (en) * | 2008-03-19 | 2009-10-08 | Ube Ind Ltd | Hydraulic composition |
| JP2013170435A (en) * | 2012-02-22 | 2013-09-02 | Ube Ind Ltd | Method for repairing concrete structure |
-
2019
- 2019-01-18 WO PCT/JP2019/001445 patent/WO2019142906A1/en active Application Filing
- 2019-01-18 JP JP2019566523A patent/JP7233381B2/en active Active
- 2019-01-21 TW TW108102206A patent/TW201932433A/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01197347A (en) * | 1988-01-30 | 1989-08-09 | Ee B C Shokai:Kk | Mortar finishing material |
| JPH08333150A (en) * | 1995-06-02 | 1996-12-17 | Ube Ind Ltd | Self-leveling cement composition |
| JP2000239609A (en) * | 1999-02-16 | 2000-09-05 | Yoshino Gypsum Co Ltd | Wet plastering material |
| JP2005089228A (en) * | 2003-09-16 | 2005-04-07 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP2009227481A (en) * | 2008-03-19 | 2009-10-08 | Ube Ind Ltd | Hydraulic composition |
| JP2013170435A (en) * | 2012-02-22 | 2013-09-02 | Ube Ind Ltd | Method for repairing concrete structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7233381B2 (en) | 2023-03-06 |
| JPWO2019142906A1 (en) | 2021-01-07 |
| TW201932433A (en) | 2019-08-16 |
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