混凝土固化氯离子影响因素的研究

Experimental study on the influence of concrete resistance to chloride ingress

本文主要研究了三个水泥品种在不同龄期和水灰比的条件下混凝土氯离子固化能力的影响。结果表明:高抗硫水泥由于C3A含量较少,对Cl-的化学结合能力较弱;中热硅酸盐水泥对Cl-的化学结合能力比高抗硫水泥好,P I型硅酸盐水泥对Cl-的化学结合能力最好。随着龄期的增加,三种水泥的化学结合能力都减弱,而物理吸附能力都增强。三种水泥的化学结合能力都随水灰比增大而增加。

This paper concentrates the influence of types of cement,curing age and water to cement ratio on the resistance to chloride ingress of concrete.It can be known from the result,owning to lack of C_3A,the chemical binding capability of PHSR to chloride is weak,and the chemical binding capability of middle-heat cement to chloride is better than PHSR.In addition P.I has the strongest capability of chemical binding to chloride.With the curing age increasing,chemical binding capability of these three cements is weakening,but the physical binding capability is increasing.After enlarging water binder ratio,we also find the chemical binding capability of three cement is on the rise.