高含MgO,C_4 AF中热硅酸盐水泥在构皮滩水电站拱坝混凝土中的应用

Application of Moderate-heat Portland Cement with Rich MgO & C_4AF in Dam Concrete of Goupitai Hydropower Station

研究了高含MgO,C4AF中热硅酸盐水泥对构皮滩水电站拱坝混凝土物理力学性能、干缩、自生体积变形等性能的影响;通过对现场观测资料的分析验证了其在水工大体积混凝土中产生的微膨胀对混凝土的收缩起到的补偿作用;同时由于C4AF含量的增加使混凝土的极限拉伸变形能力得到了提高,从而增强了水工大体积混凝土的抗裂能力。

The article had regearched influencing on mechanics behavior, drying shrinkage, volume deformation of the dam concrete by moderate-heat Portland cement with rich MgO and C4AF, as well as through analyzing data observed and measured in site verified that micro-expansion that the cement engendered in hydraulic large-volume concrete could compensate the shrinkage of concrete, and that the addition of C4AF composition could improve the maximum tensile ability of concrete, as a result the strengthened. breaking resistance of hydraulic large-volume concrete was