荷载与环境共同作用下混凝土耐久性研究进展
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摘要
混凝土结构都是在荷载与环境的共同作用下工作的,而荷载作用可能引起混凝土物理性能的改变,进而影响混凝土结构的耐久性能,忽略荷载的作用得到的混凝土耐久性研究结果存在一定的片面性。综合评述了目前荷载与其他因素共同作用下混凝土耐久性研究的进展情况,着重介绍了在荷载和环境共同作用下,混凝土的抗渗性能、混凝土抗中性化、抗离子侵蚀,以及抗冻融循环作用方面已有的研究成果,对相关的成果进行了讨论,并对混凝土耐久性研究提出了展望。
Field concrete structures are often working under the coupling effect of mechanical loads and environmental actions.The loads acting on a structure may cause the change of the physical properties of the concrete,and then influence the durability of a concrete structure.The research results of concrete durability have a certain deviation when neglecting the effect of loading.Recent studies on the durability of stressed concrete under the environmental actions are summarized,and the research results of concrete impermeability,concrete neutralization,ion erosion,and freezing-thawing are emphatically introduced,and the prospect of concrete durability research is put forward.
Field concrete structures are often working under the coupling effect of mechanical loads and environmental actions.The loads acting on a structure may cause the change of the physical properties of the concrete,and then influence the durability of a concrete structure.The research results of concrete durability have a certain deviation when neglecting the effect of loading.Recent studies on the durability of stressed concrete under the environmental actions are summarized,and the research results of concrete impermeability,concrete neutralization,ion erosion,and freezing-thawing are emphatically introduced,and the prospect of concrete durability research is put forward.
引文
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