论文部分内容阅读
本文主要介绍砼高温力学性能试验的设备配置、量测技术和试验炉(20°～900°C)的研制,以及对不同强度等级和粗骨料种类的四种砼进行的五项高温性能试验结果。后者包括高温时的抗压强度、升降温后的残余抗压强度、持续高温下的抗压强度、高温时的抗拉强度,以及高温时的受压应力-应变全曲线等。试件总数为213个。通过试验分析了高温下砼性能的变化规律和机理,并给出了建议的各项计算公式。
This article mainly introduces the equipment configuration, measurement technology and development of experimental furnaces (20°~900°C) for high temperature mechanical performance tests, and five high temperature performance tests for four types of concrete with different strength grades and coarse aggregate types. result. The latter includes compressive strength at high temperatures, residual compressive strength after heating and cooling, compressive strength at high temperatures, tensile strength at high temperatures, and compressive stress-strain curves at high temperatures. The total number of test pieces is 213. The variation law and mechanism of the crucible performance at high temperature were analyzed through experiments, and the proposed formulas were given.