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首页> 外国专利> Low shrinkage ultra high strength fiber reinforced cement composition, low shrinkage ultra high strength fiber reinforced mortar or concrete, and low shrinkage ultra high strength cement admixture

Low shrinkage ultra high strength fiber reinforced cement composition, low shrinkage ultra high strength fiber reinforced mortar or concrete, and low shrinkage ultra high strength cement admixture

机译：低收缩率超高强度纤维增强水泥组合物，低收缩率超高强度纤维增强砂浆或混凝土以及低收缩率超高强度水泥外加剂

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PPROBLEM TO BE SOLVED: To provide low shrinkage ultrahigh strength fiber-reinforced mortar or concrete which has improved flowability (workability) and exhibits high bending strength even when a smaller amount of metal fiber is used while increasing the absolute value of compressive strength, in which fine aggregate used in general ready-mixed concrete can be used, and which has high general-purpose properties and small shrinkage. PSOLUTION: The low shrinkage ultrahigh strength fiber-reinforced cement composition comprises cement, silica fume, coal gasification fly ash, gypsum, an expansive additive, a shrinkage-reducing agent, and metal fiber. The cement composition comprises, based on 100 pts.mass of the cement, (a) 5-40 pts.mass of the silica fume and the coal gasification fly ash, the mass ratio of the silica fume to the coal gasification fly ash being 95-50:5-50, (b) 0.5-8 pts.mass of the gypsum, (c) 1-5 pts.mass of the expansive additive which has a Blaine's specific surface area of 4,500-10,000 cmSP2/SP/g and comprises free lime, hauyne, and anhydrous gypsum, the free lime content being 10-40%, and (d) 0.5-5 pts.mass of the shrinkage-reducing agent which comprises 10-90 mass% of a component A represented by the general formula: HO-ä(AO)SBa/SB(CSB2/SBHSB4/SBO)SBb/SB}-H and 10-90 mass% of a component B represented by the general formula: RO-(A'O)SBn/SB-H. The low shrinkage ultrahigh strength fiber-reinforced mortar or concrete comprises the cement composition and a specific amount of fine aggregate. The low shrinkage ultrahigh strength cement admixture comprises 100 pts.mass of the cement and the components (a) to (d) in an amount as described above. PCOPYRIGHT: (C)2009,JPO&INPIT
机译：

要解决的问题：提供低收缩率的超高强度纤维增强砂浆或混凝土，即使使用较少量的金属纤维，同时提高抗压强度的绝对值，其流动性（可加工性）也得到改善，并显示出高的弯曲强度，其中可以使用一般预拌混凝土中使用的细骨料，并且具有较高的通用性能和较小的收缩率。

解决方案：低收缩率超高强度纤维增强水泥组合物包含水泥，硅粉，煤气化粉煤灰，石膏，膨胀添加剂，减缩剂和金属纤维。水泥组合物包括基于100质量份的水泥，（a）5-40质量份的硅灰和煤气化粉煤灰，硅灰与煤气化粉煤灰的质量比为95。 -50：5-50，（b）石膏质量为0.5-8磅，（c）布莱恩比表面积为4,500-10,000 cm 2 < / SP> / g，并且包含游离石灰，hauyne和无水石膏，游离石灰含量为10-40％，以及（d）0.5-5 pts的减缩剂质量，占10-90质量％由通式HO-ä（AO） a （C 2 H 4 O） b表示的组分A SB>}-H和10-90质量％的由通式RO-（A'O） n -H表示的组分B。低收缩率超高强度纤维增强砂浆或混凝土包含水泥组合物和特定数量的细骨料。该低收缩率超高强度水泥掺和物包括100pts。质量的水泥和如上所述的量的组分（a）至（d）。

版权：（C）2009，日本特许厅＆INPIT

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