混凝土的渗透性与力学性能关系的试验研究

Experimental research on the relation between the permeability and the mechanical properties of concrete

在国内外关于混凝土渗透性和力学性能的研究成果基础上,采用交流电法评价了不同水胶比、粉煤灰、NaC l掺量的混凝土的渗透性,并结合抗折强度、抗压强度进行了相关性研究。结果表明,对于掺矿质掺合料较少的普通混凝土,力学性能与渗透性有较好的相关性;而掺矿物掺合料混凝土的渗透性和强度相关性较低,强度不能反映其渗透性。

In this paper, the alternating current method was used to measure the permeability of concrete with different w/b, fly ash content and NaC1 content, and the relativity between the permeability and mechanical properties was studied based on the former relative research development. The results show that, there is an ideal relativity between the permeability and the mechanical properties for normal concrete with little mineral admixture. However, for the concrete with mineral admixture, the relativity between the permeability and the mechanical properties is low, and strength can not reflect the nature of permeability.