【摘 要】
：
A two-phase model of boundary element method (BEM) in a multiply connected domain was proposed to study the chloride diffusion in concrete.The concrete was
【机 构】
：
Key Laboratory of Disaster Prevention and Structural Safety of China Ministry of Education, School o
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
A two-phase model of boundary element method (BEM) in a multiply connected domain was proposed to study the chloride diffusion in concrete.The concrete was treated as a two-phase material composed of mortar and coarse aggregate, and the chloride diffusion was assumed to take place only in the mortar.By modeling concretes with different coarse aggregate content, particle shape, size and arrangement, the effect of coarse aggregate on the chloride diffusion was examined.Contrasted with the finite element model, the two-phase BEM model was proved to be reasonable and of more advantage, indicating that the proposed model can be used to analyze the chloride diffusion in concrete.The results showed that coarse aggregate obstructs the diffusion of chloride in concrete, and the content of coarse aggregate has a significant impact on decreasing the capability of diffusion and changing the concentration distribution of chloride in field.Nevertheless, the particle shape, size and arrangement of coarse aggregate have marked effect on the concentration distribution, but negligible influence on the profile of average concentration of chloride in mortar.
其他文献
致各期刊订户:科学出版社出版的《岩石学报》自2006年度起改由天津联合征订服务部总发行;届时请原订户和需要订购的客户与天津联合征订服务部联系订购。联系地址:天津市大寺
Bio-calcite cement and portland cement can release ammonia and carbon dioxide respectively, and these gases have a negative impact on the environment.In res
Many studies have shown that the formation of geopolymers proceeds according to a mechanism of dissolution-restructuring-polymerization resulting in a solid
Sometimes, planting eco-concrete in engineering was prepared by using sulfoaluminate cement.But the planting eco-concrete was prepared by using sulfoalumina
自画像n 风在黄昏的山冈上悄悄对孩子说话，风走了，远方有一个童话等着它。n 孩子留下你的名字吧，在这块土地上，因为有一天你会自豪地死去。
In recent years, alkali-activated slag (AAS) as an alternative low-carbon cementitious material has received increased attention.However, the high shrinkage
Future cements will require new constituents in order to become a more sustainable construction product.Therefore, the durability of the cements made with t
Steel-making slag is a type of byproduct generated during the manufacturing of steel, which has been usually used as aggregates or supplementary cementing m
Capturing and fixing CO2 is a significant method to solve the problem of globe greenhouse effect.Inspired by the cure of concrete with CO2, cement-based mat
The Ordinary Portland cement (OPC)-calcium aluminate cement (AC)-arhydrite (C (S)) system is useful for various construction materials because it can provid