超分子活性剂对混凝土抗侵蚀性及抗冻性影响

Effect of Supramolecular Active Agents on Corrosion Resistance and Frost Resistance of Concrete

采用超分子活性剂提高混凝土的抗侵蚀性和抗冻性,研究了超分子活性剂对混凝土氯离子迁移系数以及冻融循环后抗压强度耐蚀系数和相对动弹性模量的影响,并通过扫描电镜观察了不同龄期水化产物的形貌。结果表明,掺入2%超分子活性剂的C40混凝土,28d氯离子迁移系数下降了78.0%,KS150次混凝土抗压强度耐蚀系数提升了32.1%,F150次混凝土相对动弹性模量提升了85.7%。

Improving the corrosion and frost resistance of concrete by using supermolecular reactive agents,studied the effects of supermolecular reactive agents on the chloride ion migration coefficient of concrete,compressive strength corrosion resistance coefficient and relative dynamic modulus of elasticity of concrete after freeze-thaw cycles,and the morphology of hydration products at different ages was observed through scanning electron microscopy.The results showed that the chloride ion migration coefficient of C40concrete mixed with 2%supramolecular active agent decreased by 78.0%after 28days,the compressive strength and corrosion resistance coefficient of KS150concrete increased by 32.1%,and the relative dynamic elastic modulus of F150concrete increased by 85.7%.