复掺掺和料对混凝土抗冻性的影响试验

Test on Effect of Complex Admixture to the Concrete Frost Resistance

通过试验分析了粉煤灰和矿渣微粉掺和料复掺对混凝土抗冻性能的影响。结果表明:复掺掺和料后混凝土强度比基准混凝土增加,混凝土冻融循环后的质量损失率和动弹性模量损失率低于基准混凝土;当掺和物掺量达50%时,混凝土快速冻融循环500次未被破坏,说明混凝土具有良好的抗冻性和抗渗性,符合混凝土高性能、高耐久性要求。

The effect of complex fly ash and slag powder admixture to the concrete frost resistance was studied by test. The results show that the complex admixture concrete strength increases than that of the standard concrete and the mass loss rate and the dynamic elastic modulus of concrete freeze-thaw cycle loss rate is lower than that of the standard concrete. When the blend dosage of 50% , the concretes are unspoiled in 500 times freeze-thaw cycles, showing that concrete has good frost resistance and impermeability, and accord to concrete high-performance and high durability requirements.