摘要
由于混凝土中的孔大小及孔结构直接影响其抗渗性能,而抗渗性又间接影响混凝土的耐久性。因此,研究混凝土各组分材料对其孔结构的影响,并通过氯离子快速渗透试验和压汞法结合评价对混凝土抗渗性能的影响。结果表明,粉煤灰的掺入可以提高混凝土的抗渗性,同时在试验范围内水灰比减小和粉煤灰掺量增加都可以提高混凝土的抗渗性能。
As concrete pore size and pore structure directly effect its permeability resistance and the impermeability influences durability of concrete indirectly,so the influence of each component material of concrete on its pore structure is studied and the influence on concrete impermeability is assessed by combination of rapid chloride permeability test and mercury penetration method. The results show that the incorporation of fly ash can increase the impermeability of concrete, meanwhile decreased water-cement ratio or increased fly ash content can improve the impermeability of concrete in the range of test.
出处
《新型建筑材料》
北大核心
2007年第3期19-22,共4页
New Building Materials
基金
湖北省教育厅项目(200614002)
武汉市青年科技晨光计划(20055003059-29)
