WO2011108159A1 - カルシウムフェロアルミネート化合物、セメント混和材及びその製造方法、セメント組成物 - Google Patents
カルシウムフェロアルミネート化合物、セメント混和材及びその製造方法、セメント組成物 Download PDFInfo
- Publication number
- WO2011108159A1 WO2011108159A1 PCT/JP2010/070972 JP2010070972W WO2011108159A1 WO 2011108159 A1 WO2011108159 A1 WO 2011108159A1 JP 2010070972 W JP2010070972 W JP 2010070972W WO 2011108159 A1 WO2011108159 A1 WO 2011108159A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cement
- cao
- cement admixture
- compound
- substance
- Prior art date
Links
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0045—Mixed oxides or hydroxides containing aluminium
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/0093—Aluminates
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/26—Corrosion of reinforcement resistance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Definitions
- the present invention mainly relates to a cement admixture and a cement composition used in the civil engineering and construction industries.
- Calcium aluminoferrite is known as a CaO—Al 2 O 3 —Fe 2 O 3 based compound used for cement admixtures.
- Calcium aluminosilicate ferrite, 4CaO ⁇ Al 2 O 3 ⁇ Fe 2 O 3 (C 4 AF), 6CaO ⁇ 2Al 2 O 3 ⁇ Fe 2 O 3 (C 6 A 2 F), 6CaO ⁇ Al 2 O 3 ⁇ 2Fe 2 O 3 (C 6 AF 2 ) and the like are known.
- These calcium aluminoferrites have a crystal structure of 2CaO.Fe 2 O 3 (C 2 F), which is a kind of calcium ferrite. That, C 2 crystal structure while Al 2 O 3 is large amount dissolved in F keeps the structure of the C 2 F, taking Al 2 O 3 / Fe 2 O 3 molar ratio of various compositions.
- CA 2 CaO.2Al 2 O 3
- salt damage in which rebar corrosion becomes apparent due to the presence of chloride ions.
- the penetration of chloride ions to concrete structures is imparted. There is a technique to do.
- Non-Patent Document 1 As a method of suppressing the penetration of chloride ions into the hardened concrete body and imparting chloride ion penetration resistance, a method of reducing the water / cement ratio is known (see Non-Patent Document 1). However, in the method of reducing the water / cement ratio, not only the workability is impaired but also a drastic measure may not be provided.
- a cement admixture containing calcium aluminate having a CaO / Al 2 O 3 molar ratio of 0.3 to 0.7 and a Blaine specific surface area value of 2,000 to 6,000 cm 2 / g was used, and was excellent.
- a method has been proposed that has resistance to penetration of chloride ions and suppresses temperature cracks in mascons (see Patent Document 2).
- this cement admixture has a problem that rapid hardening appears in a high temperature environment, and the workability of cement concrete containing the cement admixture is impaired. For example, in areas such as Okinawa in Japan and Singapore at high temperatures, and in areas where salt damage and acid degradation are likely to be accelerated, stiffness appears and workability is impaired.
- a cement composition containing blast furnace granulated slag fine powder or pozzolanic material improves the penetration resistance of chloride ions.
- the reason for suppressing the penetration of chloride ions is that the Al component in the ground granulated blast furnace slag powder chemically fixes or electrically adsorbs chloride ions.
- the pozzolanic material is related to the reduction of calcium hydroxide in the hardened cementitious body, and suppresses the formation of voids of tens to hundreds of ⁇ m that are generated when calcium hydroxide is leached into seawater. Conceivable.
- the present invention is intended to solve the above-described problems, and even in a high temperature environment, cement concrete that can impart an excellent rust prevention effect to the reinforcing steel inside the cement concrete hardened body and enters from the outside.
- cement admixture which has resistance to penetration of chloride ions into the hardened body, and further can suppress porosity due to less leaching of Ca ions from hardened cement concrete, and further has a self-healing ability of cracks, and its It is an object of the present invention to provide a production method and a cement composition containing the admixture.
- the present invention employs the following means in order to solve the above problems.
- Calcium ferroaluminate compound comprising a CaO—Al 2 O 3 —Fe 2 O 3 system, the Fe 2 O 3 content being 0.5 to 15% by mass, and having a CaO ⁇ 2Al 2 O 3 structure .
- the cement admixture according to (2) or (3) further containing a latent hydraulic substance and / or a pozzolanic substance.
- the latent hydraulic material and / or pozzolanic material is selected from the group consisting of ground granulated blast furnace slag, fly ash, silica fume, metakaolin, pulp sludge incinerated ash, sewage sludge incinerated ash, and waste glass powder.
- the cement admixture of the present invention By using the cement admixture of the present invention, sufficient working time can be secured even in a high temperature environment, and it has excellent rust prevention effect and penetration resistance of chloride ions entering from the outside. Since there is little leaching of Ca ions from the hardened concrete, there are effects such as suppression of porosity.
- the cement concrete referred to in the present invention is a general term for cement paste, cement mortar, and concrete.
- the present inventors have found that the Fe 2 O 3 component is dissolved in CA 2 through numerous experiments. Moreover, even if a solid solution Fe 2 O 3 component maintaining CA 2 structure, C 4 AF, C 6 A 2 F, completely different composition than the calcium alumino ferrites, such as C 6 AF 2, compounds of entirely different crystal structure It became clear that it becomes. While maintaining the crystal structure of CA 2 to CA 2 compounds Fe 2 O 3 component is a solid solution, referred to as calcium ferro-aluminate.
- the calcium ferroaluminate compound (hereinafter referred to as CFA compound) used in the present invention is a mixture of a raw material containing calcia, a raw material containing alumina, a raw material containing ferrite, etc., and firing in a kiln or melting in an electric furnace. obtained by heat treatment etc., CaO, is a generic term for Al 2 O 3, Fe 2 O 3 as main components compounds.
- the composition of the CFA compound is such that the CaO / Al 2 O 3 molar ratio is 0.15 to 0.7 and the Fe 2 O 3 content is 0.5 to 15%.
- the CaO / Al 2 O 3 molar ratio is more preferably 0.4 to 0.6.
- the content of Fe 2 O 3 in the CFA compound is preferably 0.5 to 15%, more preferably 1 to 12%, and most preferably 3 to 10%. If it is less than 0.5%, a large amount of unreacted aluminum oxide remains when heat-treated, and not only the formation reaction of calcium ferroaluminate does not proceed easily, but also hard work in a high temperature environment appears and workability is impaired. Or the penetration resistance of chloride ions may deteriorate. On the contrary, even if it exceeds 15%, the effect of allowing the reaction to proceed efficiently becomes a head, and the penetration resistance of chloride ions also tends to deteriorate.
- Blaine specific surface area value (hereinafter, referred to as Blaine) 2,000 ⁇ 7,000cm 2 / g are preferred, the more preferred 3,000 ⁇ 6,000cm 2 / g, 4,000 ⁇ Most preferred is 5,000 cm 2 / g. If the CFA compound is coarse, sufficient chloride ion penetration resistance may not be obtained, and if it exceeds 7,000 cm 2 / g, rapid hardening may appear and the pot life may not be secured. .
- Material containing CaO is not particularly limited, for example, are commercially available as an industrial raw material, quick lime (CaO), slaked lime (Ca (OH) 2), include the use of limestone (CaCO 3) or the like.
- Raw material containing Al 2 O 3 is not particularly limited, for example, Al 2 O 3 or aluminum hydroxide is commercially available as an industrial raw material, and the use of bauxite. Particularly bauxite desirable because it contains Fe 2 O 3 with Al 2 O 3.
- Material containing iron is not particularly limited, crushing the iron ore which is commercially available as an industrial raw material, processed, purified Fe 2 O 3 and steel washing waste recovered from hydrochloric, like Fe 2 O 3 obtained by purification It can be used. Further, FeO, Fe 3 O 4 , and even pure iron can be used by heat treatment in an oxidizing atmosphere. Furthermore, for example, even when SiO 2 or R 2 O (R is an alkali metal) is used in combination, it can be used as long as the object of the present invention is not impaired.
- the CFA compound is obtained by mixing a raw material containing CaO, a raw material containing Al 2 O 3 , a raw material containing iron, and the like, and performing a heat treatment such as firing in a kiln or melting in an electric furnace.
- the heat treatment temperature is preferably 1400 ° C. or higher and 1600 ° C. or lower, more preferably 1450 ° C. or higher and 1550 ° C. or lower, although it depends on the blending of raw materials. Below 1400 ° C, the reaction does not proceed efficiently and unreacted Al 2 O 3 remains, and calcium ferroaluminate may not be obtained. Conversely, when it exceeds 1600 ° C, coating tends to occur during heat treatment. Not only is operation difficult, but energy efficiency may deteriorate.
- CaO / Al 2 O 3 is used in order to maintain sufficient anti-rust hardening, chloride ion penetration resistance, Ca ion leaching suppression effect, increase initial strength, and further improve self-healing ability.
- a CFA compound having a molar ratio of 0.15 to 0.7 and an Fe 2 O 3 content of 0.5 to 20% may be used in combination with a latent hydraulic substance and / or a pozzolanic substance.
- the latent hydraulic substance and / or pozzolanic substance of the present invention is not particularly limited, and examples thereof include blast furnace granulated slag fine powder, fly ash, silica fume, metakaolin, pulp sludge incineration ash, sewage sludge incineration ash, Examples include waste glass powder.
- blast furnace granulated slag fine powder, fly ash, silica fume, and metakaolin are preferred.
- the blending ratio of the CFA compound and the latent hydraulic substance and / or pozzolanic substance is not particularly limited, but is preferably 10/1 to 1/10, more preferably 5/1 to 1/5 in terms of mass ratio.
- various portland cements such as normal, early strength, ultra-early strength, low heat, and moderate heat, and various mixed cements obtained by mixing these portland cements with blast furnace slag, fly ash, or silica, Portland cement such as filler cement mixed with limestone powder and blast furnace slow-cooled slag fine powder, and environmentally friendly cement (eco-cement) manufactured from municipal waste incineration ash and sewage sludge incineration ash 1 type or 2 types or more can be used.
- various portland cements such as normal, early strength, ultra-early strength, low heat, and moderate heat
- various mixed cements obtained by mixing these portland cements with blast furnace slag, fly ash, or silica
- Portland cement such as filler cement mixed with limestone powder and blast furnace slow-cooled slag fine powder
- environmentally friendly cement eco-cement manufactured from municipal waste incineration ash and sewage sludge incineration ash 1 type or 2 types or more
- the amount of the cement admixture used is not particularly limited. Usually, when only the calcium ferroaluminate compound is used as the cement admixture, 1 to 15 in 100 parts of the cement composition composed of cement and the cement admixture. Part is preferred, and 2 to 12 parts are more preferred. If the amount of cement admixture used is small, sufficient rust prevention, chloride ion penetration resistance, and Ca ion leaching suppression may not be achieved. In some cases, the pot life cannot be secured. When a calcium ferroaluminate compound and a latent hydraulic substance and / or a pozzolanic substance are used as a cement admixture, 1 to 50 parts are preferable in 100 parts of a cement composition composed of cement and a cement admixture.
- Part is more preferred. If the amount of cement admixture used is small, sufficient rust prevention effect, chloride ion penetration resistance, Ca ion leaching suppression effect, and self-healing ability may not be obtained. In some cases, sufficient pot life cannot be secured.
- cement and a cement admixture are blended, and cement and a CFA compound are blended to obtain a cement composition.
- the water / binder ratio of the cement composition of the present invention is preferably 25 to 70%, more preferably 30 to 65%. If the blending amount of water is small, pumpability and workability may be reduced or shrinkage may be caused. If the blending amount of water is excessive, strength development may be degraded.
- the binder means the total of cement and CFA compound.
- the cement admixture and the cement composition of the present invention may be mixed at the time of construction, or a part or all of them may be mixed in advance.
- cement in addition to cement, cement admixture, and fine aggregates such as sand and coarse aggregates such as gravel, expansion material, rapid hardener, water reducing agent, AE water reducing agent, high performance water reducing agent, high performance AE Water reducing agent, antifoaming agent, thickening agent, conventional rust inhibitor, antifreeze agent, shrinkage reducing agent, setting modifier, clay minerals such as bentonite, anion exchanger such as hydrotalcite, granulated blast furnace slag fine powder It is possible to use one or more of the group consisting of slag such as blast furnace annealed slag fine powder and admixture materials such as limestone fine powder within a range that does not substantially impair the object of the present invention.
- fine aggregates such as sand and coarse aggregates such as gravel, expansion material, rapid hardener, water reducing agent, AE water reducing agent, high performance water reducing agent, high performance AE Water reducing agent, antifoaming agent, thickening agent, conventional rust inhibitor
- any existing device can be used as the mixing device, and for example, a tilting mixer, an omni mixer, a Henschel mixer, a V-type mixer, and a Nauta mixer can be used.
- FIG. 1 shows XRD measurement results of calcium ferrite (C 2 F) and calcium alumino ferrite (C 4 AF, C 6 A 2 F, C 6 AF 2 ).
- FIG. 1 shows that they have the same crystal structure.
- FIG. 2 shows the XRD measurement results of calcium ferroaluminate and calcium aluminate (CA 2 ).
- Reagent primary calcium carbonate and reagent primary aluminum oxide are blended so as to have a molar ratio shown in Table 1 in terms of oxides, and reagent primary iron oxide is Fe 2 shown in Table 1 with respect to the blend.
- O 3 were blended so that the content was fired in an electric furnace.
- the CaO / Al 2 O 3 molar ratio 0.7 is 1400 ° C
- the CaO / Al 2 O 3 molar ratio 0.6 is 1450 ° C
- the CaO / Al 2 O 3 molar ratio 0.4 is 1500 ° C.
- the CaO / Al 2 O 3 molar ratio of 0.15 was synthesized by firing at 1550 ° C. for 3 hours and then gradually cooling.
- Example 2 A cement composition was prepared by blending 7 parts of the CFA compound shown in Table 2 in 100 parts of a cement composition comprising cement and a CFA compound, and a mortar with a water / binder ratio of 0.5 was prepared according to JIS R 5201. did. Using this mortar, the setting time, rust prevention effect, compressive strength, chloride penetration depth, Ca ion leaching, and sulfate resistance were examined. The results are also shown in Table 1. The environmental temperature of the test was 30 ° C.
- CFA Compound A Reagent primary calcium carbonate and reagent primary aluminum oxide are blended at a predetermined ratio, and reagent primary iron oxide is blended so that the Fe 2 O 3 content is 3%. In the same manner as above, it was fired at 1550 ° C. in an electric furnace and then slowly cooled to synthesize, a CaO / Al 2 O 3 molar ratio of 0.1, and a brain value of 4,000 cm 2 / g CFA compound B: Experiment No. 1-3, CaO / Al 2 O 3 molar ratio 0.15, Fe 2 O 3 : 3%, Blaine value 4,000 cm 2 / g CFA compound C: Experiment No.
- Ca ion leaching Determination was made by immersing a 4 ⁇ 4 ⁇ 16 cm mortar specimen in 10 liters of pure water for 28 days and measuring the concentration of Ca ions dissolved in the liquid phase. Sulfate resistance: A 4 ⁇ 4 ⁇ 16 cm mortar specimen was immersed in a 10% Na 2 SO 4 solution for 25 weeks, and the expansion coefficient was measured.
- CFA compounds B to E having a CaO / Al 2 O 3 molar ratio in the range of 0.15 to 0.7 and containing iron (Fe 2 O 3 ) are used as cement admixtures.
- Example No.2-3 to No.2-6 In particular, sufficient working time can be secured even in a high temperature environment, and compared with the case where no CFA compound is used (Experiment No.2-1). Further, it is possible to maintain the rust prevention effect and chloride ion permeation resistance, suppress the decrease in the initial strength, and further improve the Ca ion leaching suppression effect and sulfate resistance.
- CFA compounds C and D having a CaO / Al 2 O 3 molar ratio of 0.4 to 0.6 are preferable.
- Example 3 Reagent grade calcium carbonate and reagent grade aluminum oxide are blended at a CaO / Al 2 O 3 molar ratio of 0.4 so that the reagent grade iron oxide has the Fe 2 O 3 content shown in Table 3.
- the mixture was mixed and baked in an electric furnace in the same manner as in Experimental Example 1, and then the same procedure as in Experimental Example 2 was performed except that a CFA compound synthesized by slow cooling was used in combination. The results are also shown in Table 3.
- Example 4 The same procedure as in Experimental Example 2 was performed except that the fineness CFA compound D shown in Table 4 was used. The results are also shown in Table 4.
- Example 5 The same procedure as in Experimental Example 2 was conducted except that the amount of use shown in Table 5 was obtained using CFA compound D. For comparison, a conventional rust preventive material was used in the same manner. The results are also shown in Table 5.
- Conventional rust-proofing material A Lithium nitrite, commercial product
- Conventional rust-proofing material B Nitrite-type hydrocalumite, commercial product
- Latent hydraulic material and / or pozzolanic material a ground granulated blast furnace slag, commercial product, brain value: 4000 cm 2 / g
- Example 7 The experiment was performed in the same manner as in Experimental Example 6 except that the CFA compound shown in Table 7 having a different content of Fe 2 O 3 and the latent hydraulic substance and / or pozzolanic substance A were used in combination. The results are also shown in Table 7.
- CFA compound J Reagent primary calcium carbonate and reagent primary aluminum oxide are mixed at a predetermined ratio, and reagent primary iron oxide is mixed so that the Fe 2 O 3 content is 0.5%. Sintered in an electric furnace at °C, then slowly cooled to synthesize. CaO / Al 2 O 3 molar ratio 0.6, Blaine value 4,000 cm 2 / g CFA compound K: Reagent primary calcium carbonate and reagent primary aluminum oxide are blended at a predetermined ratio, and reagent primary iron oxide is blended so that the Fe 2 O 3 content is 1%, at 1450 ° C. After firing in an electric furnace, it is synthesized by slow cooling.
- CaO / Al 2 O 3 molar ratio 0.6, Blaine value 4,000 cm 2 / g CFA Compound L Reagent 1 grade aluminum oxide primary calcium carbonate and the reagent were mixed in predetermined proportions, and blending the reagent first grade iron oxide as Fe 2 O 3 content is 7%, at 1450 ° C. After firing in an electric furnace, it is synthesized by slow cooling.
- CaO / Al 2 O 3 molar ratio 0.6, Blaine value 4,000 cm 2 / g CFA compound M Reagent primary calcium carbonate and reagent primary aluminum oxide are mixed at a predetermined ratio, and reagent primary iron oxide is mixed so that the Fe 2 O 3 content is 10%, at 1450 ° C.
- CaO / Al 2 O 3 molar ratio 0.6, Blaine value 4,000 cm 2 / g CFA Compound N Reagent primary calcium carbonate and reagent primary aluminum oxide are blended at a predetermined ratio, and reagent primary iron oxide is blended so that the Fe 2 O 3 content is 20%, at 1450 ° C.
- CaO / Al 2 O 3 molar ratio 0.6, Blaine value 4,000 cm 2 / g CFA compound O Reagent grade 1 calcium carbonate and reagent grade 1 aluminum oxide are blended at a predetermined ratio, and calcined in an electric furnace at 1450 ° C. without blending Fe 2 O 3 , and then slowly cooled and synthesized.
- Table 7 shows that CFA compounds D and J to O having a content of Fe 2 O 3 of 0.5 to 20% are combined with a latent hydraulic substance and / or a pozzolanic substance (Experiment No. 6-4, No. 6). 7-1 to No.7-5) maintain rust prevention effect and chloride ion penetration resistance, increase initial strength, and further improve Ca ion leaching suppression effect and self-healing ability. I understand. When a CFA compound O having a content of Fe 2 O 3 of 0% (CA but indicated for convenience in Table 7 as a CFA compound), a latent hydraulic substance and / or a pozzolanic substance is used (Experiment No. 7) -6), the initial strength decreased.
- Example 8 The experiment was conducted in the same manner as in Experimental Example 6 except that the CFA compound D having the fineness shown in Table 8 was combined with the latent hydraulic substance and / or the pozzolanic substance i. The results are also shown in Table 8.
- Fineness of CFA compound is preferably 2,000 ⁇ 7,000cm 2 / g, it can be said that more preferably 3,000 ⁇ 6,000cm 2 / g, most preferably 4,000 ⁇ 5,000cm 2 / g
- Example 9 The same procedure as in Experimental Example 6 was conducted except that CFA compound D was used and a latent hydraulic substance and / or a pozzolanic substance (hereinafter abbreviated as “pozzolanic substance”) shown in Table 9 was used in combination. The results are also shown in Table 9.
- Pozzolanic material B Commercially available silica fume, BET specific surface area 20 m 2 / g Pozzolanic substance C: commercial fly ash, brain value 4000 cm 2 / g Pozzolanic substance II: Commercially available metakaolin, BET specific surface area of 10 m 2 / g Pozzolanic substance e: Commercially produced pulp sludge incineration ash, brain value 4000 cm 2 / g Pozzolan to substance: commercially available sewage sludge incineration ash, Blaine 9000cm 2 / g Pozzolanic material: commercially available waste glass powder, brain value 4000 cm 2 / g Pozzolanic substance: A mixture of 50 parts of pozzolanic substance and 50 parts of pozzolanic substance, brain value 10000 cm 2 / g
- Example 10 The same procedure as in Experimental Example 6 was conducted, except that the mixture shown in Table 10 was used as the admixture using CFA compound D and pozzolanic substance A. The results are also shown in Table 10.
- the mixing ratio of the CFA compound and the pozzolanic material is set to 1/20 to 20/1 by mass ratio, so that the rust prevention effect and chloride ion penetration resistance are maintained, and the strength reduction is suppressed. Further, it can be seen that the Ca ion leaching suppression effect and self-healing ability are improved.
- the mixing ratio is preferably 1/10 to 10/1 by mass ratio, more preferably 1/5 to 5/1.
- Example 11 The same procedure as in Experimental Example 6 was carried out except that the amount of cement admixture (the sum of CFA compound D and pozzolanic substance A) was changed to the amount shown in Table 11 using CFA compound D. For comparison, a conventional rust preventive material was used in the same manner. The results are also shown in Table 11.
- the amount of cement admixture used is preferably 1 to 50 parts in 100 parts of cement composition comprising cement and cement admixture. The part is more preferable.
- cement admixture of the present invention By using the cement admixture of the present invention, sufficient working time can be secured even in a high temperature environment, excellent rust prevention effect, chloride ion penetration resistance, Ca ion leaching suppression effect and sulfuric acid resistance. Because of its saltiness, it is suitable for a wide range of uses such as marine and river irrigation structures, water tanks and floor slab concrete, mainly in the civil engineering and construction industries.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compounds Of Iron (AREA)
Abstract
Description
(1)CaO-Al2O3-Fe2O3系からなり、Fe2O3の含有量が0.5~15質量%であり、CaO・2Al2O3構造を持つカルシウムフェロアルミネート化合物。
(2)前記(1)のカルシウムフェロアルミネート化合物を含有し、CaO/Al2O3モル比が、0.15~0.7の範囲にあることを特徴とするセメント混和材。
(3)粉末度が、ブレーン比表面積値で2,000~7,000cm2/gである前記(2)のセメント混和材。
(4)さらに潜在水硬性物質および/またはポゾラン物質を含有する前記(2)または(3)のセメント混和材。
(5)前記潜在水硬性物質および/またはポゾラン物質が、高炉水砕スラグ微粉末、フライアッシュ、シリカフューム、メタカオリン、パルプスラッジ焼却灰、下水汚泥焼却灰、及び廃ガラス粉末からなる群より選ばれた一種又は二種以上を含有してなる前記(4)のセメント混和材。
(6)前記カルシウムフェロアルミネート化合物と潜在水硬性物質および/またはポゾラン物質との配合割合が、質量比で10/1~1/10である前記(4)または(5)のセメント混和材。
(7)CaO/Al2O3モル比が0.15~0.7でFe2O3の含有量が0.5~15質量%となるように、CaOを含む原料、Al2O3を含む原料、鉄を含む原料を配合し、1400℃以上、1600℃以下で熱処理して得られるクリンカーを、ブレーン比表面積値2,000~7,000cm2/gに粉砕することを特徴とするセメント混和材の製造方法。
(8)セメントと、前記(1)~(6)のうちのいずれか1項のセメント混和材を含有するセメント組成物。
なお、本発明における部や%は、特に規定しない限り質量基準で示す。
また、本発明で云うセメントコンクリートとは、セメントペースト、セメントモルタル、及びコンクリートの総称である。
CFA化合物の組成は、CaO/Al2O3モル比が0.15~0.7でFe2O3含有量が0.5~15%である。CaO/Al2O3モル比が0.4~0.6がより好ましい。0.15未満では、塩化物イオンの浸透抵抗性が充分に得られない場合があり、逆に、0.7を超えると急硬性が現れるようになり、可使時間が確保できない場合がある。CFA化合物にFe2O3の含有量は、0.5~15%が好ましく、1~12%がより好ましく、3~10%が最も好ましい。0.5%未満では、熱処理した場合に未反応の酸化アルミニウムが多く残存し、カルシウムフェロアルミネートの生成反応が進行しにくいばかりか、高温環境下での急硬性が現れて作業性が損なわれたり、塩化物イオンの浸透抵抗性が悪くなったりする。逆に15%を越えても効率的に反応を進行させる効果は頭うちとなり、また、塩化物イオンの浸透抵抗性も改悪傾向となる。
CaOを含む原料は、特に限定されないが、工業原料として市販されている例えば、生石灰(CaO)、消石灰(Ca(OH)2)、石灰石(CaCO3)等の使用が挙げられる。
Al2O3を含む原料は、特に限定されないが、工業原料として市販されている例えばAl2O3や水酸化アルミニウム、ボーキサイトの使用が挙げられる。特にボーキサイトはAl2O3と共にFe2O3を含んでいるため望ましい。
鉄を含む原料は、特に限定されないが、工業原料として市販されている鉄鉱石を粉砕、加工、精製したFe2O3や鋼材洗浄廃塩酸から回収、精製して得られるFe2O3などが使用可能である。また、FeOやFe3O4、さらには純鉄を用いても酸化雰囲気で熱処理することで使用可能である。
さらに、例えば、SiO2やR2O(Rはアルカリ金属)を併用しても、本発明の目的を損なわない限り使用可能である。
本発明の潜在水硬性物質および/またはポゾラン物質とは、特に限定されるものではないが、例えば、高炉水砕スラグ微粉末、フライアッシュ、シリカフューム、メタカオリン、パルプスラッジ焼却灰、下水汚泥焼却灰、廃ガラス粉末等が挙げられる。上記の効果をより充分に発揮させるためには、高炉水砕スラグ微粉末、フライアッシュ、シリカフューム、メタカオリンが好ましい。
CFA化合物またはポゾラン物質(潜在水硬性物質)の配合割合を上記の範囲とすることにより、単独の場合と比べて充分な防錆効果、塩化物イオンの浸透抵抗性、Caイオンの溶脱抑制効果、自己治癒能力の向上が得られる。
カルシウムフェライト(C2F)、カルシウムアルミノフェライト(C4AF、C6A2F、C6AF2)、カルシウムフェロアルミネート、カルシウムアルミネート(CA2)を合成した。
図1に、カルシウムフェライト(C2F)およびカルシウムアルミノフェライト(C4AF、C6A2F、C6AF2)のXRD測定結果を示した。図1より、これらは同じ結晶構造を持つことが分かる。
一方、図2にカルシウムフェロアルミネートおよびカルシウムアルミネート(CA2)のXRD測定結果を示した。カルシウムフェロアルミネートでは、CA2構造を保ちながらFe2O3が固溶していることが分かる。なお、Fe2O3が15%を超えると、固溶しなくなり、マグネタイトが析出している様子がうかがえる。以上より、カルシウムフェロアルミネートは、従来知られているCaO-Al2O3-Fe2O3系化合物のカルシウムアルミノフェライトとは全く異なる化合物であることが実証された。
試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを酸化物換算で表1に示すモル比となるように配合し、その配合物に対して試薬1級の酸化鉄を表1に示すFe2O3含有量となるように配合し、電気炉で焼成した。CaO/Al2O3モル比0.7のものは1400℃、CaO/Al2O3モル比0.6のものは1450℃、CaO/Al2O3モル比0.4のものは1500℃、CaO/Al2O3モル比0.15のものは1550℃でそれぞれ3時間焼成後,徐冷して合成した。すべてブレーン値は4,000cm2/gに調整した。なお、比較のため、酸化鉄を添加しない場合、SiO2を含有した場合、R2Oを含有した場合についても同様に合成した。X線回折を用いて未反応物の有無を評価した。結果を表1に示す。
X線回折:未反応物(酸化アルミニウム)の回折ピークが明確に確認された場合を×,多少残っているようであれば△、確認されなかった場合を○とした。
なお、鉄分を加えない場合、CaO/Al2O3モル比0.7のものは1500℃、CaO/Al2O3モル比0.6のものは1550℃、CaO/Al2O3モル比0.4のものは1600℃、CaO/Al2O3モル比0.15のものは1650℃以上で焼成することで未反応の酸化アルミニウムの回折ピークが消失した。
表2に示すCFA化合物をセメントとCFA化合物からなるセメント組成物100部中、7部配合してセメント組成物を調製し、水/結合材比0.5のモルタルをJIS R 5201に準じて調製した。このモルタルを用いて、凝結時間、防錆効果、圧縮強さ、塩化物浸透深さ、Caイオンの溶脱、および耐硫酸塩性を調べた。結果を表1に併記する。なお、試験の環境温度は30℃で行った。
CFA化合物A:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3含有量が3%となるように試薬1級の酸化鉄を配合し、実験例1と同様に1550℃で電気炉において焼成した後、徐冷して合成、CaO/Al2O3モル比0.1、ブレーン値4,000cm2/g
CFA化合物B:実験No.1-3、CaO/Al2O3モル比0.15、Fe2O3:3%、ブレーン値4,000cm2/g
CFA化合物C:実験No.1-9、CaO/Al2O3モル比0.4、Fe2O3:3%、ブレーン値4,000cm2/g
CFA化合物D:実験No.1-15、CaO/Al2O3モル比0.6、Fe2O3:3%、ブレーン値4,000cm2/g
CFA化合物E:実験No.1-21、CaO/Al2O3モル比0.7、Fe2O3:3%、ブレーン値4,000cm2/g
CFA化合物F:電気炉において1400℃で焼成した後徐冷して合成、CaO/Al2O3モル比0.9、Fe2O3:3%,ブレーン値4,000cm2/g
CFA化合物G:実験No.1-26、CaO/Al2O3モル比0.4、ブレーン値4,000cm2/g
CFA化合物H:実験No.1-29、CaO/Al2O3モル比0.4、SiO2:3%、ブレーン値4,000cm2/g
CFA化合物I:実験No.1-30、CaO/Al2O3モル比0.4、Na2O:3%、ブレーン値4,000cm2/g
セメント:普通ポルトランドセメント、市販品
細骨材:JIS R 5201で使用する標準砂
水:水道水
凝結時間:JIS R 5201に準じて終結時間を測定。
防錆効果:モルタルに内在塩化物イオンとして、10kg/m3となるように塩化物イオンを加え、丸鋼の鉄筋を入れて50℃に加温養生することによる促進試験で防錆効果を確認した。鉄筋に錆が発生しなかった場合は良、1/10の面積以内で錆が発生した場合は可、1/10の面積を超えて錆が発生した場合は不可とした。
圧縮強さ:JIS R 5201に準じて材齢1日と28日圧縮強さを測定。
塩化物浸透深さ:塩化物イオンの浸透抵抗性を評価。10cmφ×20cmの円柱状のモルタル供試体を作製し、作製したモルタル供試体を、材齢28日まで30℃の水中養生を施し、30℃の塩分濃度3.5%の食塩水である擬似海水に12週間浸漬した後、塩化物浸透深さを測定。塩化物浸透深さはフルオロセイン-硝酸銀法により、モルタル供試体断面の茶変しなかった部分を塩化物浸透深さと見なし、ノギスで8点測定して平均値を求めた。
Caイオンの溶脱:4×4×16cmのモルタル供試体を10リットルの純水に28日間浸漬し、液相中に溶解したCaイオン濃度を測定することにより判定した。
耐硫酸塩性:4×4×16cmのモルタル供試体を10%Na2SO4溶液に25週間浸漬し、膨張率を測定した。
Fe2O3の代わりに、SiO2を含有した化合物H(CFAではないが表2では便宜的にCFA化合物として表記した)を使用した場合(実験No.2-9)には、防錆効果が劣り、初期強度が低下し、塩化物イオンの浸透抵抗性、Caイオンの溶脱抑制効果が充分に得られず、耐硫酸塩性が低下した。
Fe2O3の代わりに、Na2Oを含有した化合物I(CFAではないが表2では便宜的にCFA化合物として表記した)を使用した場合(実験No.2-10)には、短時間で流動性が低下し、凝結した。
試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムをCaO/Al2O3モル比0.4で配合し、試薬1級の酸化鉄を表3に示すFe2O3含有量となるように配合し、実験例1と同様に電気炉で焼成した後、徐冷して合成したCFA化合物を併用したこと以外は実験例2と同様に行った。結果を表3に併記する。
表4に示す粉末度のCFA化合物Dを使用したこと以外は実験例2と同様に行った。結果を表4に併記する。
CFA化合物Dを使用して表5に示す使用量としたこと以外は実験例2と同様に行った。比較のために、従来の防錆材を用いて同様に行った。結果を表5に併記する。
従来の防錆材イ:亜硝酸リチウム、市販品
従来の防錆材ロ:亜硝酸型ハイドロカルマイト、市販品
表5より、カルシウムフェロアルミネート化合物のみをセメント混和材として使用する場合、セメントとセメント混和材からなるセメント組成物100部中、1~15部が好ましく、2~12部がより好ましいといえる。
CaO/Al2O3モル比が異なる表6に示すCFA化合物と潜在水硬性物質および/またはポゾラン物質イを、質量比1/2で混合してセメント混和材を調製した。調製したセメント混和材を用いて、セメントとセメント混和材からなるセメント組成物100部中、セメント混和材を21部配合してセメント組成物を調製し、水/結合材比0.5のモルタルをJIS R 5201に準じて調製した。このモルタルを用いて、防錆効果、圧縮強さ、塩化物浸透深さ、Caイオンの溶脱および自己治癒能力を調べた。結果を表6に併記する。
潜在水硬性物質および/またはポゾラン物質イ:高炉水砕スラグ微粉末、市販品、ブレーン値:4000cm2/g
自己治癒能力:6mmのナイロン繊維を0.15質量%混合した10×10×40cmのモルタル供試体を作製し、曲げ応力によって幅0.3mmのひび割れを導入した。擬似海水に180日間浸漬した後、ひび割れ幅を測定した。◎は完全にひび割れが塞がった、○は0.1mm以下にひび割れ幅が縮小化した、△は0.2mm程度までひび割れ幅が縮小。×はひび割れ幅が縮小化されないか、あるいは逆に広がったことを示す。
Fe2O3の含有量が異なる表7に示すCFA化合物と潜在水硬性物質および/またはポゾラン物質イを併用したこと以外は実験例6と同様に行った。 結果を表7に併記する。
CFA化合物J:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3含有量が0.5%となるように試薬1級の酸化鉄を配合し、1450℃で電気炉において焼成した後、徐冷して合成。CaO/Al2O3モル比0.6、ブレーン値4,000cm2/g
CFA化合物K:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3含有量が1%となるように試薬1級の酸化鉄を配合し、1450℃で電気炉において焼成した後、徐冷して合成。CaO/Al2O3モル比0.6、ブレーン値4,000cm2/g
CFA化合物L:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3含有量が7%となるように試薬1級の酸化鉄を配合し、1450℃で電気炉において焼成した後、徐冷して合成。CaO/Al2O3モル比0.6、ブレーン値4,000cm2/g
CFA化合物M:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3含有量が10%となるように試薬1級の酸化鉄を配合し、1450℃で電気炉において焼成した後、徐冷して合成。CaO/Al2O3モル比0.6、ブレーン値4,000cm2/g
CFA化合物N:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3含有量が20%となるように試薬1級の酸化鉄を配合し、1450℃で電気炉において焼成した後、徐冷して合成。CaO/Al2O3モル比0.6、ブレーン値4,000cm2/g
CFA化合物O:試薬1級の炭酸カルシウムと試薬1級の酸化アルミニウムを所定割合で配合し、Fe2O3を配合しないで、1450℃で電気炉において焼成した後、徐冷して合成。CaO/Al2O3モル比0.6、ブレーン値4,000cm2/g
表8に示す粉末度のCFA化合物Dと潜在水硬性物質および/またはポゾラン物質イを併用したこと以外は実験例6と同様に行った。結果を表8に併記する。
CFA化合物Dを使用し、表9に示す潜在水硬性物質および/またはポゾラン物質(以下、「ポゾラン物質」と省略する)を併用したこと以外は実験例6と同様に行った。結果を表9に併記する。
ポゾラン物質ロ:市販のシリカフューム、BET比表面積20m2/g
ポゾラン物質ハ:市販のフライアッシュ、ブレーン値4000cm2/g
ポゾラン物質二:市販のメタカオリン、BET比表面積10m2/g
ポゾラン物質ホ:市販のパルプスラッジ焼却灰、ブレーン値4000cm2/g
ポゾラン物質へ:市販の下水汚泥焼却灰、ブレーン値9000cm2/g
ポゾラン物質ト:市販の廃ガラス粉末、ブレーン値4000cm2/g
ポゾラン物質チ:ポゾラン物質イ50部とポゾラン物質ロ50部の混合物、ブレーン値10000cm2/g
CFA化合物Dとポゾラン物質イを用いて、表10に示す配合で混和材としたこと以外は実験例6と同様に行った。結果を表10に併記する。
CFA化合物Dを使用してセメント混和材(CFA化合物Dとポゾラン物質イを合計したもの)の使用量を表11に示す使用量としたこと以外は実験例6と同様に行った。比較のために、従来の防錆材を用いて同様に行った。結果を表11に併記する。
表11より、CFA化合物とポゾラン物質をセメント混和材として使用する場合、セメント混和材の使用量は、セメントとセメント混和材からなるセメント組成物100部中、1~50部が好ましく、5~30部がより好ましいといえる。
Claims (8)
- CaO-Al2O3-Fe2O3系からなり、Fe2O3の含有量が0.5~15質量%であり、CaO・2Al2O3構造を持つカルシウムフェロアルミネート化合物。
- 請求項1に記載のカルシウムフェロアルミネート化合物を含有し、CaO/Al2O3モル比が、0.15~0.7の範囲にあることを特徴とするセメント混和材。
- 粉末度が、ブレーン比表面積値で2,000~7,000cm2/gである請求項2に記載のセメント混和材。
- さらに潜在水硬性物質および/またはポゾラン物質を含有する請求項2に記載のセメント混和材。
- 前記潜在水硬性物質および/またはポゾラン物質が、高炉水砕スラグ微粉末、フライアッシュ、シリカフューム、メタカオリン、パルプスラッジ焼却灰、下水汚泥焼却灰、及び廃ガラス粉末からなる群より選ばれた一種又は二種以上を含有してなる請求項4に記載のセメント混和材。
- 前記カルシウムフェロアルミネート化合物と潜在水硬性物質および/またはポゾラン物質との配合割合が、質量比で10/1~1/10である請求項4に記載のセメント混和材。
- CaO/Al2O3モル比が0.15~0.7でFe2O3の含有量が0.5~15質量%となるように、CaOを含む原料、Al2O3を含む原料、鉄を含む原料を配合し、1400℃以上、1600℃以下で熱処理して得られるクリンカーを、ブレーン比表面積値2,000~7,000cm2/gに粉砕することを特徴とするセメント混和材の製造方法。
- セメントと、請求項1~6のうちいずれか1項に記載のセメント混和材を含有するセメント組成物。
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/581,573 US8425679B2 (en) | 2010-03-01 | 2010-11-25 | Calcium ferroaluminate compound, cement admixture and its manufacturing methods, and cement composition |
ES10847055.0T ES2666344T3 (es) | 2010-03-01 | 2010-11-25 | Uso de un compuesto de ferroaluminato de calcio, aditivo de cemento y composición de cemento |
NO10847055A NO2543648T3 (ja) | 2010-03-01 | 2010-11-25 | |
JP2012502963A JP5688073B2 (ja) | 2010-03-01 | 2010-11-25 | カルシウムフェロアルミネート化合物、セメント混和材及びその製造方法、セメント組成物 |
SG2012064333A SG183833A1 (en) | 2010-03-01 | 2010-11-25 | Calcium ferroaluminate compound, cement admixture and process for producing same, and cement composition |
BR112012022020-9A BR112012022020B1 (pt) | 2010-03-01 | 2010-11-25 | composto de ferroaluminato de cálcio, mistura de cimento e seus métodos de manufatura, e composição de cimento |
PL10847055T PL2543648T3 (pl) | 2010-03-01 | 2010-11-25 | Zastosowanie związku żelazoglinianu wapnia, domieszka do cementu i kompozycja cementowa |
KR1020127025441A KR101799611B1 (ko) | 2010-03-01 | 2010-11-25 | 칼슘페로알루미네이트 화합물, 시멘트 혼화재 및 그 제조방법, 시멘트 조성물 |
CN201080066565.XA CN102869633B (zh) | 2010-03-01 | 2010-11-25 | 铁铝酸钙化合物、水泥混合材及其制造方法、水泥组合物 |
EP10847055.0A EP2543648B1 (en) | 2010-03-01 | 2010-11-25 | Use of a calcium ferroaluminate compound, cement admixture and cement composition |
HRP20180634TT HRP20180634T1 (hr) | 2010-03-01 | 2018-04-23 | Upotreba kalcijevog feroaluminatnog spoja, cementna primjesa i cementna mješavina |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPPCT/JP2010/053270 | 2010-03-01 | ||
PCT/JP2010/053270 WO2011108065A1 (ja) | 2010-03-01 | 2010-03-01 | セメント混和材及びセメント組成物 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011108159A1 true WO2011108159A1 (ja) | 2011-09-09 |
Family
ID=44541751
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/053270 WO2011108065A1 (ja) | 2010-03-01 | 2010-03-01 | セメント混和材及びセメント組成物 |
PCT/JP2010/070972 WO2011108159A1 (ja) | 2010-03-01 | 2010-11-25 | カルシウムフェロアルミネート化合物、セメント混和材及びその製造方法、セメント組成物 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/053270 WO2011108065A1 (ja) | 2010-03-01 | 2010-03-01 | セメント混和材及びセメント組成物 |
Country Status (12)
Country | Link |
---|---|
US (1) | US8425679B2 (ja) |
EP (1) | EP2543648B1 (ja) |
JP (1) | JP5688073B2 (ja) |
KR (1) | KR101799611B1 (ja) |
CN (1) | CN102869633B (ja) |
BR (1) | BR112012022020B1 (ja) |
ES (1) | ES2666344T3 (ja) |
HR (1) | HRP20180634T1 (ja) |
NO (1) | NO2543648T3 (ja) |
PL (1) | PL2543648T3 (ja) |
SG (1) | SG183833A1 (ja) |
WO (2) | WO2011108065A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011140407A (ja) * | 2010-01-05 | 2011-07-21 | Denki Kagaku Kogyo Kk | CaO−Al2O3−Fe2O3系化合物の製造方法 |
JP2012201522A (ja) * | 2011-03-24 | 2012-10-22 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2012254896A (ja) * | 2011-06-08 | 2012-12-27 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2013241306A (ja) * | 2012-05-21 | 2013-12-05 | Denki Kagaku Kogyo Kk | セメント混和材、セメント組成物及びその製造方法 |
JP2013241305A (ja) * | 2012-05-21 | 2013-12-05 | Denki Kagaku Kogyo Kk | セメント混和材、セメント組成物及びその製造方法 |
JP2017036164A (ja) * | 2015-08-07 | 2017-02-16 | 国立大学法人東京工業大学 | 塩害対策コンクリート硬化体およびその製造方法 |
JP2018039692A (ja) * | 2016-09-07 | 2018-03-15 | 株式会社池永セメント工業所 | 自己修復型コンクリート製品 |
CN108129051A (zh) * | 2017-12-29 | 2018-06-08 | 江苏苏博特新材料股份有限公司 | 一种长期高效固化氯离子的混凝土外加剂及应用 |
KR102106800B1 (ko) * | 2018-12-05 | 2020-05-07 | 주식회사 인트켐 | 유무기 하이브리드 자기치유 구체방수재의 제조방법 및 그 자기치유 구체방수재를 이용한 구체방수용 시멘트 결합재 조성물 |
CN112624720A (zh) * | 2020-12-31 | 2021-04-09 | 广州建设工程质量安全检测中心有限公司 | 一种高抗氯离子侵蚀辅助胶凝材料及其制备方法 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103332877B (zh) * | 2013-06-28 | 2014-04-02 | 华北水利水电大学 | 利用疏浚淤泥制备无机胶凝材料的方法 |
ES2527702B1 (es) * | 2013-06-28 | 2016-02-10 | Envirocem, S.L. | Mortero hidráulico con vidrio. |
ES2535782B1 (es) * | 2013-10-14 | 2016-02-16 | Abengoa Solar New Technologies, S.A. | Hormigón autocompactable de alta resistencia y su procedimiento de obtención |
CN103896521B (zh) * | 2014-03-04 | 2015-10-28 | 黑龙江省水利科学研究院 | 一种渠道防渗输水水槽的制备方法 |
FR3037061B1 (fr) * | 2015-06-03 | 2019-09-13 | Kerneos | Composition comprenant un aluminate de calcium amorphe et procede de fabrication associe |
CN105110663A (zh) * | 2015-07-31 | 2015-12-02 | 沈阳航空航天大学 | 一种利用污泥灰制备地质聚合物的方法 |
SG10202003874UA (en) | 2015-10-30 | 2020-05-28 | Torion Technologies Inc | Thermal gradient chromatography devices and methods of using them |
JP6312778B1 (ja) | 2016-11-11 | 2018-04-18 | デンカ株式会社 | セメント混和材およびそれを用いたセメント組成物 |
CN106380099A (zh) * | 2016-11-29 | 2017-02-08 | 北京宝辰联合科技有限公司 | 一种钢筋混凝土结构用氯离子吸附剂及其制备方法 |
CN106746801B (zh) * | 2016-12-26 | 2019-01-11 | 西南石油大学 | 一种利用赤泥制备微晶铁铝酸钙的方法 |
DE102017101628A1 (de) * | 2017-01-27 | 2018-08-02 | TARTECH eco industries AG | Verfahren zum Herstellen eines Bindemittels für die Konditionierung von Schlämmen, wasserhaltigen Böden sowie für die Neutralisation von Säuren |
PL423560A1 (pl) * | 2017-11-23 | 2019-06-03 | Walbet A D K Walkowiak Spolka Jawna | Zintegrowany aktywator samonaprawy betonu oraz mieszanka betonowa z aktywatorem zintegrowanym i jej zastosowanie |
KR101963579B1 (ko) * | 2018-07-19 | 2019-07-31 | 효성중공업 주식회사 | 조기강도 발현 콘크리트 조성물 및 이를 이용한 시공방법 |
CN109748326A (zh) * | 2019-03-22 | 2019-05-14 | 西南石油大学 | 一种利用溶胶-凝胶法制备铁铝酸四钙的工艺 |
KR102097111B1 (ko) * | 2019-08-07 | 2020-04-06 | 이관승 | 긴급보수용 초속경 시멘트 콘크리트 조성물 및 이를 이용한 도로포장 보수, 보강공법 |
CN110436492B (zh) * | 2019-08-19 | 2021-10-19 | 河北科技大学 | 一种综合利用低品位铝资源的方法 |
CN110790526A (zh) * | 2019-11-18 | 2020-02-14 | 广西云燕特种水泥建材有限公司 | 一种海工水泥及其生产方法 |
CN111620576A (zh) * | 2020-06-10 | 2020-09-04 | 上海宝宁环保科技有限公司 | 一种利用污泥灰渣和富铁工业废料制备铁质校正料的方法 |
KR102371890B1 (ko) * | 2021-07-06 | 2022-03-11 | 주식회사 효승 | 초속경 콘크리트 조성물 및 그를 이용한 콘크리트 포장 보수보강 공법 |
CN113968705B (zh) * | 2021-11-10 | 2022-11-11 | 中铁十二局集团有限公司 | 一种桥面铺装用多元胶凝体系stc超高韧性混凝土材料 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007153714A (ja) * | 2005-12-08 | 2007-06-21 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2008246478A (ja) * | 2008-04-21 | 2008-10-16 | Toda Kogyo Corp | 吸着剤 |
JP2010100473A (ja) * | 2008-10-23 | 2010-05-06 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2010155737A (ja) * | 2008-12-26 | 2010-07-15 | Taiheiyo Materials Corp | 速硬混和材 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1076068B (it) | 1976-06-28 | 1985-04-22 | Grace W R & Co | Composizione per proteggere dalla corrosione metallo in strutture a base di calcestruzzo,e metodo di suo impiego |
JPH01103970A (ja) | 1987-10-15 | 1989-04-21 | Nissan Chem Ind Ltd | 硬化コンクリートの劣化防止方法 |
JPH08253354A (ja) * | 1995-03-14 | 1996-10-01 | Chichibu Onoda Cement Corp | 結晶質高水和活性物、セメント用急結材、及びコンクリート又はモルタルの凝結・硬化促進方法 |
US6610138B1 (en) * | 2001-11-13 | 2003-08-26 | Paul W. Brown | Method of resisting corrosion in metal reinforcing elements contained in concrete and related compounds and structures |
JP4382614B2 (ja) | 2003-09-10 | 2009-12-16 | 電気化学工業株式会社 | セメント混和材およびそれを用いたセメント組成物 |
CN1219719C (zh) * | 2003-12-01 | 2005-09-21 | 济南大学 | 含钡硫铁铝酸盐水泥 |
CN101475327B (zh) * | 2009-02-19 | 2011-09-07 | 武汉科技大学 | 一种铝酸盐水泥及其制备方法 |
-
2010
- 2010-03-01 WO PCT/JP2010/053270 patent/WO2011108065A1/ja active Application Filing
- 2010-11-25 ES ES10847055.0T patent/ES2666344T3/es active Active
- 2010-11-25 PL PL10847055T patent/PL2543648T3/pl unknown
- 2010-11-25 EP EP10847055.0A patent/EP2543648B1/en active Active
- 2010-11-25 WO PCT/JP2010/070972 patent/WO2011108159A1/ja active Application Filing
- 2010-11-25 US US13/581,573 patent/US8425679B2/en active Active
- 2010-11-25 JP JP2012502963A patent/JP5688073B2/ja active Active
- 2010-11-25 NO NO10847055A patent/NO2543648T3/no unknown
- 2010-11-25 SG SG2012064333A patent/SG183833A1/en unknown
- 2010-11-25 KR KR1020127025441A patent/KR101799611B1/ko active IP Right Grant
- 2010-11-25 CN CN201080066565.XA patent/CN102869633B/zh active Active
- 2010-11-25 BR BR112012022020-9A patent/BR112012022020B1/pt active IP Right Grant
-
2018
- 2018-04-23 HR HRP20180634TT patent/HRP20180634T1/hr unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007153714A (ja) * | 2005-12-08 | 2007-06-21 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2008246478A (ja) * | 2008-04-21 | 2008-10-16 | Toda Kogyo Corp | 吸着剤 |
JP2010100473A (ja) * | 2008-10-23 | 2010-05-06 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2010155737A (ja) * | 2008-12-26 | 2010-07-15 | Taiheiyo Materials Corp | 速硬混和材 |
Non-Patent Citations (2)
Title |
---|
MINORU MORIOKA: "CaO?2Al2O3 no Enkabutsu Ion no Kakusan Yokusei Koka", DAI 63 KAI CEMENT GIJUTSU TAIKAI KOEN YOSHI 2009, 30 April 2009 (2009-04-30), pages 116 - 117, XP008169063 * |
See also references of EP2543648A4 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011140407A (ja) * | 2010-01-05 | 2011-07-21 | Denki Kagaku Kogyo Kk | CaO−Al2O3−Fe2O3系化合物の製造方法 |
JP2012201522A (ja) * | 2011-03-24 | 2012-10-22 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2012254896A (ja) * | 2011-06-08 | 2012-12-27 | Denki Kagaku Kogyo Kk | セメント混和材及びセメント組成物 |
JP2013241306A (ja) * | 2012-05-21 | 2013-12-05 | Denki Kagaku Kogyo Kk | セメント混和材、セメント組成物及びその製造方法 |
JP2013241305A (ja) * | 2012-05-21 | 2013-12-05 | Denki Kagaku Kogyo Kk | セメント混和材、セメント組成物及びその製造方法 |
JP2017036164A (ja) * | 2015-08-07 | 2017-02-16 | 国立大学法人東京工業大学 | 塩害対策コンクリート硬化体およびその製造方法 |
JP2018039692A (ja) * | 2016-09-07 | 2018-03-15 | 株式会社池永セメント工業所 | 自己修復型コンクリート製品 |
CN108129051A (zh) * | 2017-12-29 | 2018-06-08 | 江苏苏博特新材料股份有限公司 | 一种长期高效固化氯离子的混凝土外加剂及应用 |
CN108129051B (zh) * | 2017-12-29 | 2020-10-23 | 江苏苏博特新材料股份有限公司 | 一种长期高效固化氯离子的混凝土外加剂及应用 |
KR102106800B1 (ko) * | 2018-12-05 | 2020-05-07 | 주식회사 인트켐 | 유무기 하이브리드 자기치유 구체방수재의 제조방법 및 그 자기치유 구체방수재를 이용한 구체방수용 시멘트 결합재 조성물 |
CN112624720A (zh) * | 2020-12-31 | 2021-04-09 | 广州建设工程质量安全检测中心有限公司 | 一种高抗氯离子侵蚀辅助胶凝材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20130049177A (ko) | 2013-05-13 |
HRP20180634T1 (hr) | 2018-06-01 |
CN102869633A (zh) | 2013-01-09 |
EP2543648A4 (en) | 2016-06-08 |
BR112012022020A2 (pt) | 2020-09-01 |
PL2543648T3 (pl) | 2018-08-31 |
NO2543648T3 (ja) | 2018-07-07 |
US20120318172A1 (en) | 2012-12-20 |
ES2666344T3 (es) | 2018-05-04 |
US8425679B2 (en) | 2013-04-23 |
WO2011108065A1 (ja) | 2011-09-09 |
JPWO2011108159A1 (ja) | 2013-06-20 |
CN102869633B (zh) | 2014-04-02 |
JP5688073B2 (ja) | 2015-03-25 |
EP2543648A1 (en) | 2013-01-09 |
EP2543648B1 (en) | 2018-02-07 |
BR112012022020B1 (pt) | 2021-04-20 |
SG183833A1 (en) | 2012-10-30 |
KR101799611B1 (ko) | 2017-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5688073B2 (ja) | カルシウムフェロアルミネート化合物、セメント混和材及びその製造方法、セメント組成物 | |
JP4382614B2 (ja) | セメント混和材およびそれを用いたセメント組成物 | |
JP2007153714A (ja) | セメント混和材及びセメント組成物 | |
JP5345821B2 (ja) | セメント混和材及びセメント組成物 | |
JP6312778B1 (ja) | セメント混和材およびそれを用いたセメント組成物 | |
JP2010100471A (ja) | セメント混和材及びセメント組成物 | |
JP4509015B2 (ja) | セメント混和材及びセメント組成物 | |
JP5345820B2 (ja) | セメント混和材及びセメント組成物 | |
JP5651067B2 (ja) | 水硬性セメント組成物 | |
JP5651055B2 (ja) | セメント混和材及びセメント組成物 | |
JP5634683B2 (ja) | セメント混和材及びセメント組成物の調整方法 | |
JP5843105B2 (ja) | セメント混和材、セメント組成物及びその製造方法 | |
JP5313624B2 (ja) | セメント組成物及びセメントコンクリート | |
JP7062668B2 (ja) | セメント混和材、セメント組成物及びその製造方法 | |
JP5313623B2 (ja) | セメント混和材及びセメント組成物 | |
JP5851343B2 (ja) | セメント混和材、セメント組成物及びその製造方法 | |
JP2007153715A (ja) | セメント混和材及びセメント組成物 | |
JP6509586B2 (ja) | 塩害対策用混和材および鉄筋コンクリートの塩害対策方法 | |
JP2022135751A (ja) | セメント混和材及びセメント組成物 | |
JP2010100472A (ja) | セメント混和材及びセメント組成物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080066565.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10847055 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012502963 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010847055 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13581573 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20127025441 Country of ref document: KR Kind code of ref document: A |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112012022020 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112012022020 Country of ref document: BR Kind code of ref document: A2 Effective date: 20120831 |