密实剂掺量对混凝土抗渗及抗压性能的影响

Effect of compacting agent dosage on antipermeability and compressive strength of concrete

密实剂作为混凝土添加剂,主要用于提高混凝土的抗渗性能。通过对地库用混凝土掺加不同掺量密实剂进行试验研究,测定混凝土的抗渗性能和抗压强度,研究密实剂掺量对抗渗性能和抗压强度的影响,并对混凝土试样进行压汞试验,从孔隙角度探究密实剂的作用效果。结果表明:添加密实剂后的混凝土达到了较高的抗渗等级,抗压强度也有所提高,且掺量越多,内部结构愈加密实,优选密实剂掺量为0.21%的混凝土。

As a concrete additive, compacting agent is mainly used to improve the antipermeability of concrete.In this paper,the anti permeability and compressive strength of concrete were measured by the test of concrete specimens with different dosage of admixture. And the influence of the content of the concrete is analyzed.Then the concrete test block was carried out by mercury intrusion test so that the effect of compacting agent can be studied from the perspective of pore.Experimental research shows that the antipermeability of con-crete with compacting agent can reach the standard and the compressive strength of the concrete is improved.In addiction,with more amount of the admixture ,the inner structure of concrete is denser and the optimum density of concrete is 0.21%.