碳化作用下玻化微珠保温混凝土碳化深度及强度变化试验研究

摘要

In order to study the carbonation resistance of glazed hollow beads thermal insulation concrete, accelerated carbonation experiment under different carbonization time has been conducted. The tests have been designed choosing three different water cement ratios on the basis of the optimum mixture ratio. The carbonation depth and cube compressive strength under different carbonization time have been determined, and then compared with ordinary concrete. Test results show that the insulation concrete has a good carbonation resistance. The carbonation depth prediction model has been es-tablished using the regression analysis method. And the quantitative relational expression between concrete strength and carbonation time has been determined.%为研究玻化微珠保温混凝土的碳化性能，进行了不同碳化龄期的室内快速碳化试验。在保温混凝土优化配合比的基础上选定三种不同的水灰比设计试验，测定不同龄期的碳化深度和立方体抗压强度，并选定同等条件下的普通混凝土进行了对比。试验结果表明，保温混凝土的抗碳化性能较好，运用回归分析法建立了保温混凝土的碳化深度预测模型，确定了抗压强度与碳化龄期之间的定量关系表达式。