碳化混凝土模拟再碱化过程锂离子的物料传递  

Study on Material Transfer in the Process of Realkalization

作　　者：张羽[1] 张俊喜[1] 蒋俊[1] 鲁进亮[1] 王昆[2] 屈文俊[2] 

机构地区：[1]上海电力学院能源与环境工程学院,上海200090 [2]同济大学土木工程学院,上海200090

出　　处：《上海电力学院学报》2010年第1期57-60,共4页Journal of Shanghai University of Electric Power

基　　金：国家自然科学基金(50771602);国家自然科学基金(50678127)

摘　　要：通过检测不同条件下Li+离子在混凝土中的浓度变化和滞留量,考察了再碱化过程中物料的传递方式及其在该过程中的作用.结果表明:在电场作用下,锂离子通过电渗和电迁移由溶液向混凝土迁移;再碱化过程前期主要靠扩散实现,后期则主要由电渗和电迁移来完成.In this paper, the change of Li ＋ ion concentration in concrete and the residual in the concrete are measured under different conditions, the way of the material transfer and their affects in the process of realkalization are investigated. The results indicate that electro-osmosis and electromigration occur in electric field; the realkalization process mainly depends on the diffusion in the earlier stage while it mainly depends on the electro-osmosis and electro-migration in the later stage.

关 键 词：再碱化 物料传递 扩散 电渗透 电迁移 

分 类 号：TU375[建筑科学—结构工程] TU528.571