摘要
混凝土经常在水环境中工作,受外界水压力、孔隙水压力以及水的化学侵蚀等因素的影响,水中混凝土的力学性能会有一些改变,这些改变会对混凝土结构的设计强度、使用年限等产生一定的影响。有关这方面的研究多是建立在试验的基础之上,理论研究较少;且现有的研究多是定性的解释,定量的研究较少;对单个因素影响混凝土力学性能的研究较多,而多因素相互作用对混凝土的力学性能产生影响的研究较少。本文主要从水的化学作用和力学作用出发,对与此相关的一些研究进行了系统地总结和评述,得到了环境水影响下混凝土力学性能的一些变化趋势,并在此基础上对本课题的研究进行了一些展望,在研究方法上提出自己的一些看法。
Concrete structures are often erected in the ambient water. The mechanical properties of the concrete will be affected by the ambient water pressure, pore water pressure and the erosion of the ambient water. Therefore, the design strength and the serviceable life of the concrete structures in the ambient water need to be reconsidered. In this paper, some developments on this topic are reviewed and discussed. There are many experimental and qualitative researches on this topic but little theoretical and quantitative analyses in the literatures. Furthermore, single factor which influences the mechanical properties of concrete is investigated widely, but the interaction between these factors is little discussed. In addition, the prospective trends on this subject are forecasted, and some research methods are proposed in order to make advanced achievements.
出处
《中国科技论文》
CAS
2006年第2期83-94,共12页
China Sciencepaper
关键词
混凝土
环境水
孔隙
强度
弹性模量
concrete
ambient water
pore
strength
modulus of elasticity
