高温后掺防腐剂C35高性能混凝土剩余抗压强度试验研究

Experimental research on surplus compressive strength of C35 the high performance concretes mixed the antiseptic after the high temperature

对高温后C35、C40、C50高性能混凝土与掺防腐剂C35高性能混凝土的剩余抗压强度进行了对比试验,描述了高温过程试验现象,分析了掺防腐剂C35高性能混凝土爆裂原因,探索添加防腐剂对高温后高性能混凝土剩余抗压强度的影响;通过回归分析建立了C35、C40、C50高性能混凝土与掺防腐剂C35高性能混凝土抗压强度与温度之间的二元线性回归公式。研究表明:掺加防腐剂C35高性能混凝土试件在400℃时就发生爆裂,而未掺加防腐剂C35高性能混凝土试件在试验过程中没发生爆裂现象,表明虽然掺加防腐剂有利于增强高性能混凝土抗压强度,但是不利于高性能混凝土抗爆。

After the high temperature the C35,C40,C50 high performance concretes with mixed the antiseptic C35 high performance concretes the surplus compressive strength to carry on the comparative trial,describes the experiment phenomenon,analysis mixed the antiseptic C35 high performance concretes ruptured the reason,explores the influence after the high temperature the high performance concretes surplus compressive strength;Establishes the C35,C40,C50 high performance concretes through the regression analysis with to mix between the antiseptic C35 high performance concretes compressive strength and the temperature dual linear regression formula.Studies have shown that：admixture of preserva-tives C35 high-performance concrete specimens at 400 ℃ when the burst took place,without admixture of preservatives C35 high-performance concrete specimens did not happen in the course of the experiment burst phenomenon,indicating that although the admixture of preservatives in favor reinforced high performance concrete compressive strength,but it is not conducive to high-performance concrete blast-resistant.