论文部分内容阅读
综合评述了目前荷载与环境因素共同作用下混凝土耐久性的研究进展情况,着重介绍了荷载(应力)对混凝土抗碳化、抗氯盐和硫酸盐侵蚀,抗冻融性能方面的研究成果。得出一致结论:随着拉应力水平的提高,混凝土耐久性降低;随着压应力水平的提高,混凝土耐久性提高,但当压应力超出临界应力范围,混凝土耐久性反而降低。因此,荷载是耐久性研究中不可忽视的因素之一。
The progress of the research on durability of concrete under the combined effect of load and environmental factors is reviewed in this paper. The results of research on the effects of load (stress) on the anti-carbonation, chloride and sulfate corrosion resistance and anti-freeze-thaw resistance of concrete are emphatically introduced. It is concluded that with the increase of tensile stress, the durability of concrete decreases. With the increase of compressive stress, the durability of concrete increases. However, when the compressive stress exceeds the critical stress range, the durability of concrete decreases. Therefore, the load is one of the factors that can not be ignored in the study of durability.