机构地区: 深圳大学土木工程学院
出 处: 《混凝土》 2010年第4期57-58,共2页
摘 要: 利用氯离子扩散系数快速测定的RCM法,结合孔结构分析,研究膨胀剂对混凝土氯离子扩散系数的影响。认为适量膨胀剂的掺入,可以提高混凝土的密实性,从而提高混凝土的抗压强度,同时降低混凝土的渗透性。但是,过大的膨胀量可能会在混凝土内部产生微裂缝,从而增加了混凝土的渗透性。 Based on the rapid determination of chloride diffusion coefficient with RCM method and pore structure analysis,the influence of expan-sive agent on chloride diffusion coefficient of concrete has been investigated.The concrete compactness can be enhanced by incorporating adequate expansive agent.Furthermore,the increase ofconcrete compactness led to the increase ofcompressive strength and the decrease of concrete permeabil-ity.However,the excessive expansive agent maylead to internal micro cracking ofconcrete,resulted in an increase ofconcrete permeability.
领 域: [建筑科学]