不同掺合料混凝土早期抗裂性能的试验研究

Experimental Study on Concrete Cracking Resis.tan.ce at Early Age with Different Mineral Admixtures

本文通过试验研究了在同强度等级(C50混凝土)时,不同的胶凝材料组成对混凝土早期抗裂性能的影响。文中选择了四种有代表性的混凝土进行温度应力试验,分别为普硅水泥混凝土、微膨胀混凝土、大掺量粉煤灰混凝土和掺硅灰混凝土,最后根据试验结果对不同品种混凝土的早期开裂性能进行了对比分析。

Based on the same strength class(C50 concrete),impact of different cementitious material admixtures on concrete cracking resis.tan.ce at early age were tested and studied in this paper.Four kinds of representative concrete,which is ordinary Portland cement concrete,expansive concrete,a large amount of fly ash concrete and doped silica fume concrete,were chosed to be tested in temperature-stress testing.Meanwhile the cracking performance of different varieties of concrete at early age were also compared and analyzed.