预裂混凝土氯离子扩散系数计算模型及验证
发布时间：2018-10-16 19:50
【摘要】：为探讨水胶比、裂缝宽度、裂缝深度等因素对预裂混凝土内氯离子扩散的综合影响,采用快速氯离子迁移系数法获取多因素影响下的氯离子扩散系数,并考虑水胶比、时间衰减和裂缝等因素,建立了氯离子扩散系数计算模型。结果表明,氯离子扩散系数随水胶比增大而增大,在0.05~0.50mm裂缝宽度范围内与裂缝宽度成正相关,裂缝处氯离子渗透深度与裂缝深度成正比;氯离子扩散系数计算模型拟合结果与试验结果均吻合较好。
[Abstract]:In order to study the comprehensive influence of water / binder ratio, crack width and crack depth on chloride ion diffusion in precracked concrete, the chlorine ion diffusion coefficient under the influence of multiple factors was obtained by fast chlorine ion transfer coefficient method, and the water / binder ratio was considered. The calculation model of chloride ion diffusion coefficient is established by time attenuation and crack. The results show that the diffusion coefficient of chloride ion increases with the increase of water-binder ratio, and is positively correlated with the crack width in the range of 0.05~0.50mm crack width, and the penetration depth of chloride ion in the fracture is proportional to the fracture depth. The fitting results of the model are in good agreement with the experimental results.
【作者单位】： 河海大学水利水电学院;中国水利水电第七工程局有限公司;
【分类号】：TV431
本文编号：2275455
[Abstract]:In order to study the comprehensive influence of water / binder ratio, crack width and crack depth on chloride ion diffusion in precracked concrete, the chlorine ion diffusion coefficient under the influence of multiple factors was obtained by fast chlorine ion transfer coefficient method, and the water / binder ratio was considered. The calculation model of chloride ion diffusion coefficient is established by time attenuation and crack. The results show that the diffusion coefficient of chloride ion increases with the increase of water-binder ratio, and is positively correlated with the crack width in the range of 0.05~0.50mm crack width, and the penetration depth of chloride ion in the fracture is proportional to the fracture depth. The fitting results of the model are in good agreement with the experimental results.
【作者单位】： 河海大学水利水电学院;中国水利水电第七工程局有限公司;
【分类号】：TV431
【相似文献】
相关期刊论文 前4条
1 赵铁军,万小梅;一种预测混凝土氯离子扩散系数的方法[J];工业建筑;2001年12期
2 姚昌建;金伟良;王海龙;金立兵;延永东;;海工混凝土氯离子扩散系数随深度的变化规律[J];水利水运工程学报;2008年04期
3 叶铭勋;胡竹魂;;氯离子扩散系数的测定[J];水利水运科学研究;1986年04期
4 伍亚玲;张俊芝;傅招旗;庄华夏;许亮;;水工混凝土氯离子扩散系数初期衰减规律研究[J];人民长江;2013年11期
相关博士学位论文 前1条
1 熊建波;荷载与冻融共同作用下氯离子在海工混凝土中扩散行为研究[D];华南理工大学;2016年
相关硕士学位论文 前1条
1 陈培杰;海工水泥混凝土基本性能和氯离子扩散特性的试验研究[D];浙江工业大学;2015年
，本文编号：2275455
本文链接：https://www.wllwen.com/kejilunwen/shuiwenshuili/2275455.html
