南水北调与水利科技2017，Vol.15Issue(4)：161-167,7.DOI:10.13476/j.cnki.nsbdqk.2017.04.026
基于渗透性能的混凝土耐久性预测模型
The prediction model of concrete durability based on permeability
摘要
Abstract
Through gas permeability test,water absorption test,and chloride ion erosion test of concrete samples with different mix proportions,this article has analyzed the relationship between the chloride ion diffusion coefficient and permeability,established a concrete durability prediction model based on permeability,and verified the model with a coastal sluice.The results showed that gas permeability coefficient,water absorption coefficient,and chloride ion diffusion coefficient would all increase with the increase of water cement ratio;in different water cement ratio conditions,chloride ion diffusion coefficient would increase with the increase of gas permeability and water absorption coefficient,showing a certain correlation between them.Just by testing the permeability of concrete structures,the established prediction model of concrete durability can predict the service life of the concrete structures.The model was verified and proven feasible with a coastal sluice.It has great significance in predicting the service life of concrete structures in chloride environment directly based on their permeability.关键词
混凝土/渗透性能/氯离子侵蚀/耐久性预测模型Key words
concrete/permeability/chloride ion erosion/durability prediction model分类
建筑与水利引用本文复制引用
闫菲,王瑞骏,车明杰,贺新星..基于渗透性能的混凝土耐久性预测模型[J].南水北调与水利科技,2017,15(4):161-167,7.基金项目
国家自然科学基金项目(50779051) National Natural Science Foundation of China(50779051) （50779051）
