WO2005087682A1 - Adjuvant de ciment, composition du ciment, mortier et béton - Google Patents

Adjuvant de ciment, composition du ciment, mortier et béton Download PDF

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Publication number
WO2005087682A1
WO2005087682A1 PCT/JP2005/004532 JP2005004532W WO2005087682A1 WO 2005087682 A1 WO2005087682 A1 WO 2005087682A1 JP 2005004532 W JP2005004532 W JP 2005004532W WO 2005087682 A1 WO2005087682 A1 WO 2005087682A1
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WIPO (PCT)
Prior art keywords
concrete
cement
mortar
strength
fly ash
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Application number
PCT/JP2005/004532
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English (en)
Japanese (ja)
Inventor
Yoshiharu Watanabe
Original Assignee
Denki Kagaku Kogyo Kabushiki Kaisha
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Filing date
Publication date
Application filed by Denki Kagaku Kogyo Kabushiki Kaisha filed Critical Denki Kagaku Kogyo Kabushiki Kaisha
Priority to JP2006519418A priority Critical patent/JP4813355B2/ja
Publication of WO2005087682A1 publication Critical patent/WO2005087682A1/fr

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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
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C04B40/0042—Powdery mixtures
    • 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
    • C04B7/02—Portland cement
    • C04B7/04—Portland cement using raw materials containing gypsum, i.e. processes of the Mueller-Kuehne type
    • 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
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • 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 relates to a cement admixture, a cement composition, a mortar and a concrete using the same. More specifically, it is an admixture containing silica fume and fly ash classified to 20 m or less, and a cement composition obtained by adding this to cement. Further, the present invention relates to a mortar and a concrete having an increased bending strength using the cement composition.
  • Mortar or concrete has a problem that the bending strength is basically lower than the compressive strength, and the bending strength is not so high even if the compressive strength is increased. Therefore, road surfaces, beams, girders and many concrete secondary products designed with bending strength tend to be rich and economical in concrete mix. Prestress is introduced by a steel bar. In addition, for fume pipes and the like, an expanding material is mixed with concrete to introduce a chemical press or a chemical prestress to increase the external pressure strength.
  • silica fume has a high pozzolanic activity and is used as a strength enhancer. Furthermore, by combining with a relatively large amount of a high-performance water reducing agent, the mortar flow, the concrete slump or the slump flow can be increased, and the mortar or the concrete having a low water binder ratio can be easily produced, so that a high fluidity can be obtained. It is often used as an admixture for strength mortar or concrete.
  • Fly ash is spherical coal ash containing hollow particles with a diameter of 100 m or less, produced as a by-product from a pulverized coal-fired thermal power plant, and although its pozzolanic activity is low, it reacts in the long term. It is often used as fly ash cement because it enhances water tightness. As shown in Patent Document 1, by classifying this into 20 m or less or 10 m or less, large hollow particles are removed, resulting in good spherical solid particles. When combined with a high-performance water reducing agent or high-performance AE water reducing agent due to its ball bearing action, it increases the mortar flow, concrete slump or slump flow, and exhibits strong stickiness. . Further, it is also known that even when the same flow or slump is used, the strength of the reduced water is increased as compared with the mortar or concrete containing no classified fly ash.
  • gypsum is widely used as a high-strength admixture regardless of the presence or absence of steam curing, and it is also known that higher strength and durability can be obtained by combining with gypsum. Tepuru.
  • Patent Document 3 As a classical method for increasing bending strength and toughness, there is a method of adding a metal fiber. It is also known that a method of improving toughness by using metal fibers can be achieved by adding silica fume and fine needle-like or plate-like powder to cement to limit the maximum aggregate diameter to a small value. RU
  • Patent Document 1 JP-A-63-8248
  • Patent Document 2 JP-A-3-40947
  • Patent Document 3 JP-A-11-246255
  • Patent Document 2 high strength is easily developed by using gypsum alone or in combination with silica fume, and bending strength is also increased by increasing the compressive strength. There was a problem that the ratio was not in the same area as ordinary concrete. As shown in Patent Document 3, in the method of reinforcing with metal fibers, while the fine aggregate for mortar or concrete used in ready-mixed concrete plants and concrete product factories is 5 mm or less, the maximum aggregate diameter is reduced. There is a problem that it cannot be widely spread because it is an essential requirement that the thickness be 2 mm or less or 1 mm or less.
  • the present invention has been made to solve the above-mentioned problems in the prior art, It is an object of the present invention to provide a mortar or concrete in which the absolute values of strength and bending strength are increased and the ratio of bending strength to compressive strength is increased.
  • Another object of the present invention is to provide a cement admixture for realizing the mortar or concrete, and a cement composition using the cement admixture.
  • Still another object of the present invention is to provide a hardened cement body obtained from the above mortar or concrete.
  • the ratio of the bending strength to the bending strength and the compressive strength can be independently determined by using a combination of fly ash and gypsum, which are conventionally known as silica fumes with a diameter of 20 m or less, in combination. It has been found that it can be synergistically increased as compared with the case of using. Furthermore, since the bending strength of the base mortar or concrete itself can be increased, the bending strength can be increased by using metal fibers in combination even when using fine aggregate for mortar or concrete that is commonly used. The inventors have found a fact that can be dramatically increased, and have completed the present invention.
  • the present invention relates to the following cement admixture, cement composition, mortar, concrete, and hardened cement.
  • a cement admixture comprising silica fume and fly ash classified to 20 ⁇ m or less, wherein the mixing ratio of silica fume: classified fly ash is 95: 5—10: 90 by mass. Admixture.
  • a cement composition comprising 100 parts of the cement and 1 to 35 parts of the cement admixture described in (1) above.
  • the flow value of kneaded mortar or concrete is improved, and good workability is obtained.
  • the obtained mortar and concrete have high absolute values of compressive strength and flexural strength, and also have a high ratio of flexural strength to compressive strength.
  • metal fibers are mixed and reinforced, the bending strength can be dramatically increased, and an economical and advantageous design for manufacturing civil engineering structures and concrete secondary products becomes possible.
  • Silica fume used in the present invention is a fine particle having a spherical diameter of not more than Lm, which is a by-product produced when silicon alloys such as metallic silicon and Fe-mouth silicon and zirconia are produced in an electric furnace. Is amorphous highly reactive SiO. Compressive strength is silica fume
  • the force gradually increases in accordance with the amount of added silica.
  • the ratio of the bending strength to the compressive strength is lower than in the case where silica fume is not mixed.
  • silica fume significantly enhances fluidity when used in combination with a relatively large amount of a high-performance water reducing agent that can be used not only as a strength enhancer and about 10% of silica fume with respect to cement.
  • the flow characteristics vary depending on the type of high-performance water reducing agent. Is small, and shows relatively high viscosity and fluidity.
  • a so-called high-performance AE water reducing agent based on polycarboxylate that entrains air On the other hand, the fluidity becomes large in the state of sticky plastic rather than simply viscous, and the feeling of switching back with a scoop becomes lighter in the former and heavier in the latter. Therefore, a combination system of high performance AE water reducer and silica fume may be used simply because it makes pumping easier.
  • Fly ash is a spherical granular residue collected from a boiler's flue together with combustion gas with coal ash produced as a by-product from a pulverized coal-fired thermal power plant as described above, and collected by a dust collector. Usually, it is directly blended with cement and used as fly ash cement. In the present invention, it is an essential condition that a material classified to 20 m or less is used, and fly ash cannot achieve the effects of the present invention without classification. There are two types of commercially available classified fly ash: those classified to 20 ⁇ m or less and those classified to 10 ⁇ m or less.
  • the cement admixture of the present invention has a mass ratio of silica fume: fly ash classified to 20 ⁇ m or less to 95: 5-10: 90, preferably 90: 10-10-15: 85, more preferably 80:50. 20-70: 30 ratio. If the classified fly ash is less than 5%, the effect of increasing the bending strength is small. Even if the classified fly ash exceeds 90%, the effect of increasing the bending strength is small. The compressive strength gradually decreases as the proportion of classified fly ash is increased. The effect of increasing the bending strength has a peak at around 60:40.
  • the admixture of the present invention is preferably added in an amount of 1 to 35 parts, more preferably 2 to 30 parts, and most preferably 3 to 25 parts, based on 100 parts of cement. Even if it is added in excess of 35 parts, the increase in bending strength reaches a plateau and is not economically favorable.
  • the gypsum used in the present invention includes various forms of gypsum such as dihydrate gypsum, hemihydrate gypsum, soluble anhydrous gypsum (type III), and insoluble anhydrous gypsum (type II).
  • Water gypsum is preferred.
  • the compressive strength decreases as the proportion of fly ash classified to 20 m or less increases. Further increase the compressive strength and song This has the effect of increasing both absolute values of the bending strength. Gypsum is converted to anhydrous, cement
  • 0.5 to 12 parts, more preferably 0.8 to 10 parts, most preferably 118 parts are added to 100 parts. Even if it exceeds 12 parts, no further strength effect can be obtained.
  • a required amount of a high-performance water reducing agent or a high-performance AE water reducing agent is used in combination.
  • the high-performance water reducing agent is mainly composed of any one of polyalkylarylsulfonate, aromatic aminosulfonate, and melamine formalin resin / sulfonate. Two or more are used.
  • Polyalkylaryl sulfonate-based high-performance water reducing agents include methyl naphthalene sulfonic acid formalin condensate, naphthalene sulfonic acid formalin condensate, and anthracene sulfonic acid formalin condensate.
  • the commercial products are Denki Kagaku Kogyo Co., Ltd. Company name "FT-500” and its series, Kao Corporation product name "Mighty-100" (powder) and "Mighty-150" and its series, Daiichi Kogyo Pharmaceutical Co., Ltd. Representative examples include Nippon Paper Industries Co., Ltd.
  • the high-performance AE water reducing agent is usually called a polycarboxylate-based water reducing agent, and is a copolymer containing an unsaturated carboxylic acid monomer as one component or a salt thereof.
  • a polycarboxylate-based water reducing agent is usually called a copolymer containing an unsaturated carboxylic acid monomer as one component or a salt thereof.
  • copolymers of polyalkylene glycol monoacrylate, polyalkylene glycol monomethacrylate, maleic anhydride and styrene, copolymers of acrylic acid and methacrylate, and copolymerizable with these monomers examples include copolymers derived from monomers.
  • the company name "Darlex Super 100, 200, 300, 1000" series and others are commercial
  • the cement used in the present invention is various portland cements, various mixed cements or eco cements. Further, cement in which these arbitrary amounts are mixed may be used.
  • metal fibers can be used in combination.
  • the metal fiber is not special, and may be used for mortar or concrete that is usually sold.
  • the metal fibers maximum amount and in the case where the concrete mortar from the viewpoint of increasing the effect and the workability of the force bending strength to 1. added 0 to 6.0 volume% in outer percentage relative to mortar or concrete lm 3
  • the preferred ranges are different.
  • the maximum addition amount and the preferable range also differ depending on the concrete molding method such as vibration molding and centrifugal force molding.
  • the bending tensile strength of the mortar and the concrete increases from 1.0% by volume of the metal fiber, and the workability of the mortar is 5.0% by volume or less.
  • the content is preferably 3.0% by volume or less.
  • the method of adding the admixture of the present invention is not particularly limited.
  • a mixture of silica fume and fly ash classified to 20 m or less may be added, or gypsum may be further added.
  • each component may be separately prepared and added to a mixer together with another mortar or concrete material.
  • the kneading method is not particularly limited, and the kneading method usually used may be used.
  • There is no particular limitation on the method of adding the metal fiber but a method in which mortar or concrete is kneaded and mixed, and the mixing is continued while stirring the mixer is preferred because it is difficult to form fiber balls.
  • the method for curing the mortar and concrete of the present invention is not limited, and standard curing, steam curing and autoclave curing are also possible.
  • Cement Ordinary Portland cement manufactured by Denki Kagaku Kogyo Co., Ltd. Fine density: 3.16 g / cm 3 Fine aggregate: Himekawa river sand from Niigata (5 mm below), density: 2.62 g / cm 3
  • Coarse aggregate crushed stone from Himekawa, Niigata (13-5 mm), density 2.64 g / cm 3
  • Gypsum Insoluble anhydrous gypsum (naturally occurring, density 2.82) and industrial dihydrate gypsum powder, density 2.30 Metal fiber: manufactured by Tokyo Seimitsu Co., Ltd., "Daipack" iron, width 0.9 mm, thickness 0.34 mm, length 30mm, Density 8.00gZcm 3
  • Water reducing agent High performance AE water reducing agent WRA (l), Grace Chemicals Co., Ltd. "Super 1000N”, High performance water reducing agent WRA (2), Daiichi Kogyo Seiyaku Co., Ltd. "Cell Flow 110P” ⁇ Test items And how to do it>
  • 17.5kg of concrete is packed into a cylindrical form of 20cm in outer diameter x 30cm in length, initial speed 1.5G x 2 minutes, low speed 3G x 5 minutes, medium speed I: 8G x 1 minute, medium speed II: 15G x 2 minutes
  • the mold was subjected to centrifugal force molding. After curing, the external pressure load at which cracks occurred and the tube thickness were measured to calculate the bending tensile strength.
  • the inner 1Z3 was made of mortar containing metal fiber, 12.5 kg of concrete was packed and subjected to centrifugal molding under the above conditions, and then 5 kg of mortar was packed again and similarly centrifugally molded.
  • the kneading of the mortar (or concrete) is performed by kneading the cement, the components of the admixture, and the fine aggregate (and coarse aggregate) for 30 seconds, and then dissolving a water reducing agent in water. And kneaded with an omni mixer for 3 minutes.
  • knead the mortar or concrete for 3 minutes add the metal fibers little by little without stopping stirring, and knead for another 3 minutes.
  • Example 1 gypsum of the type and addition amount (based on 100 parts of cement) shown in Table 2 was further added. The same test as in Example 1 was performed. Table 2 shows the results.
  • gypsum promotes both compressive strength and bending strength to increase strength.
  • the effect is apparent when 0.5 part or more is added to 100 parts of cement, becomes more remarkable at 0.8 part or more or 1.0 part or more, and exceeds 12 parts.
  • no further strength effect can be obtained.
  • adding 10 parts or less, preferably 118 parts of gypsum to 100 parts of cement increases the absolute values of both compressive strength and bending strength.
  • the metal fiber dramatically increases the bending strength of the mortar, but the effect is completely lost at 1.5% by volume.
  • the bending strength increased. When it exceeded 5.0% by volume, it reached a plateau. At 6.5% by volume, workability was poor and moldability was poor. It has been found that the range is most preferably 2.5-5% by volume for the mortar of vibration molding.
  • metal fibers increase the flexural strength of concrete, but have little effect at 1.0% by volume.
  • the bending strength gradually increases, but reaches a plateau.
  • workability is poor and molding is difficult.
  • the most preferable range including the workability was 2.0-4.0% by volume in the case of the concrete of vibration molding.
  • the specimens for centrifugal force molding were prepared by molding the whole with one layer of mortar or concrete with the added amount of metal fiber, and molding the outer 3cm with mortar or concrete without metal fiber, Two-layer molded mortar or concrete with 2 cm inside was prepared using mortar or concrete with added fiber. Table 7 shows the results.
  • WRA (2) A high-performance water reducing agent, added in powder form and mixed.
  • the flow value of the kneaded mortar or concrete is improved, and good workability is obtained.
  • the obtained mortar and concrete have high absolute values of compressive strength and flexural strength, and also have a high ratio of flexural strength to compressive strength.
  • metal fibers are mixed and reinforced, the bending strength can be dramatically increased, and an economical and advantageous design for manufacturing civil engineering structures and concrete secondary products becomes possible.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Adjuvant de ciment composé de vapeurs de silice et de cendres volantes de max. 20 µm, dont le ratio des vapeurs de silice/cendres volantes correspond à des valeurs comprises entre 95/5 et 10/90 pour la masse ; l'adjuvant de ciment comprend également du gypse, un composant à base de ciment, mortier, béton et ciment dur utilisant l'adjuvant ci-dessus. L'adjuvant ci-dessus améliore la fluidité du mortier ou du béton après la préparation du mélange. Il en facilite le travail et donne lieu à un mortier ou un béton présentant des valeurs absolues plus importantes en ce qui concerne les forces de compression et de flexion. Il présente également un résultat majeur si l'on rapporte la force de flexion à la force de compression. De plus, si l'on renforce le mélange en y ajoutant de la fibre métallique, la force de flexion sera plus importante, ce qui peut s'avérer plus économique et avantageux pour les constructions du génie civil, les structures architecturales et les produits à base de béton.
PCT/JP2005/004532 2004-03-17 2005-03-15 Adjuvant de ciment, composition du ciment, mortier et béton WO2005087682A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006519418A JP4813355B2 (ja) 2004-03-17 2005-03-15 セメント混和材、セメント組成物、モルタル及びコンクリート

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004075718 2004-03-17
JP2004-075718 2004-03-17

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WO2005087682A1 true WO2005087682A1 (fr) 2005-09-22

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Country Status (6)

Country Link
JP (1) JP4813355B2 (fr)
KR (1) KR20060123031A (fr)
CN (1) CN1826298A (fr)
MY (1) MY153230A (fr)
TW (1) TWI336318B (fr)
WO (1) WO2005087682A1 (fr)

Cited By (6)

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JP2008162842A (ja) * 2006-12-28 2008-07-17 Taiheiyo Material Kk モルタル又はコンクリート用高強度混和剤
JP2008195576A (ja) * 2007-02-14 2008-08-28 Denki Kagaku Kogyo Kk セメント混和材、セメント組成物、及びセメントコンクリート
JP2008239403A (ja) * 2007-03-27 2008-10-09 Taiheiyo Cement Corp 水硬性組成物
JP2008247709A (ja) * 2007-03-30 2008-10-16 Sumitomo Osaka Cement Co Ltd 遠心成形コンクリート製品
KR101365659B1 (ko) * 2013-12-12 2014-02-20 (주)영광엔지니어링건축사사무소 초고강도 콘크리트
JP2016060673A (ja) * 2014-09-19 2016-04-25 株式会社Ihi フライアッシュの処理方法

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KR100755424B1 (ko) * 2006-08-08 2007-09-05 한국건설기술연구원 초조강 섬유보강 시멘트 복합체의 제조방법 및 이로부터제조된 복합체
WO2008069115A1 (fr) * 2006-12-05 2008-06-12 Taiheiyo Cement Corporation Système de fabrication de ciment et procédé de fabrication
KR100807761B1 (ko) * 2007-04-27 2008-02-28 주식회사 콘크리닉 알파형반수석고를 이용한 시멘트조성물 및 이를 이용한시공방법
KR102525169B1 (ko) * 2021-10-21 2023-04-24 문보경 시멘트 강도 강화제 및 그 조성물
TWI822093B (zh) * 2022-06-08 2023-11-11 國立宜蘭大學 摻雜超微細反應型飛灰的混凝土及其製備方法

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JPH042642A (ja) * 1990-04-17 1992-01-07 Shikoku Sogo Kenkyusho:Kk 水密性コンクリート用セメント組成物およびその製造方法
JPH06157115A (ja) * 1992-05-27 1994-06-03 Showa Denko Kk 無機質成形体の押出成形方法
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JP2008195576A (ja) * 2007-02-14 2008-08-28 Denki Kagaku Kogyo Kk セメント混和材、セメント組成物、及びセメントコンクリート
JP2008239403A (ja) * 2007-03-27 2008-10-09 Taiheiyo Cement Corp 水硬性組成物
JP2008247709A (ja) * 2007-03-30 2008-10-16 Sumitomo Osaka Cement Co Ltd 遠心成形コンクリート製品
KR101365659B1 (ko) * 2013-12-12 2014-02-20 (주)영광엔지니어링건축사사무소 초고강도 콘크리트
JP2016060673A (ja) * 2014-09-19 2016-04-25 株式会社Ihi フライアッシュの処理方法

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CN1826298A (zh) 2006-08-30
MY153230A (en) 2015-01-29
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