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对一定范围的轻集料混凝土取得了应力松弛的数据。具有同样水泥浆含量的拌合物,任何时间的应力损失大约与初始应力成正比,而与加载时的强度成反比。常应变下的应力松弛正常应力下的徐变为快。从分析其他研究者的数据来看,可以用一个与集料种类、配合比和储存环境等因素无关的公式将松弛比和徐变系数联系起来,这个关系可以用一个考虑了徐变恢复的“徐变率”法来加以说明。
A range of lightweight aggregate concrete obtained stress relaxation data. With a mixture of the same slurry content, the stress loss at any time is approximately proportional to the initial stress and inversely proportional to the strength at loading. Stress relaxation under normal strain Creeps under normal stress become fast. From the analysis of other researchers’ data, it is possible to relate the relaxation ratio to the creep coefficient using a formula that is independent of factors such as aggregate type, mix ratio, and storage environment. This relationship can be related to a “ Creep rate ”method to illustrate.