吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (4): 1102-1106.doi: 10.13229/j.cnki.jdxbgxb201504012
王涛, 裴存栋, 韩万水, 陈峰
WANG Tao, PEI Cun-dong, HAN Wan-shui, CHEN Feng
摘要: 采用电导率法测试C30和C60混凝土中氯离子的扩散系数,并参照CCES01-2004标准对氯离子的渗透性进行评价,结果表明:在应力作用下,氯离子在C30混凝土中的渗透性比在C60混凝土中弱;氯离子在拉应力作用下的渗透性比在压应力作用下强;在压应力作用下,氯离子渗透扩散系数随着应力比的增加先减后增,压应力比为0.35时,氯离子渗透性最小;在拉应力下,氯离子渗透扩散系数随着应力比的增加持续上升,当应力比到达0.35时,扩散系数急剧增大。综合考虑下,混凝土在应力比为0.35时,氯离子的渗透性最低,对混凝土耐久性影响最小。
中图分类号:
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