文档介绍：高温对混凝土抗压强度的影响
摘要:由于混凝土材料中粗细骨料和水泥等材料的热工性能不同,在高温作用下,这些材料间的物理化学作用使混凝土力学性能产生变异,进而导致混凝土力学性能劣化。实验采用液压伺服试验系统对经历相同时间恒温加热,不同温度作用后的C30普通硅酸盐混凝圆柱体试块进行抗压强度试验,详细描述高温后试块的外观特征及抗压破坏特征,探讨分析了不同加热温度对混凝土的抗压强度力学性能的影响。本试验结果表明:高温后,混凝土的力学性能随温度的升高而劣化,表现为随着受热温度的升高,混凝土的抗压强度降低。此外,还探讨了混凝土抗压强度随温度变化的规律,得到了混凝土抗压强度随温度变化的试验曲线。
关键词:混凝土;高温;抗压强度
Effect of temperature on pressive strength of concrete
Abstract:The thermal properties of concrete material of coarse aggregate and cement and other materials, under the condition of high temperature, the physical and chemical effects of these materials to make the mechanical properties of concrete mutation, resulting in deterioration of mechanical properties of concrete. The experiment adopts hydraulic servo test system to experience the same constant temperature heating time, different temperature after interaction of C30 ordinary portland concrete cylinder specimens were subjected pressive strength tests, described in detail after high temperature test appearance characteristics pressive block failure characteristics, to explore the effect pressive strength of different heating temperature on mechanical properties of concrete is analyzed. In addition, also discusses the rule of pressive strength varies with temperature, a regression formula pressive strength of concrete with temperature changes, comparing the regression curve with the test results, the regression curve can be simulated well test curve.
keywords:concrete; elevated temperature; compression strength
目录
1 绪论 1
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2 试验设计介绍 5
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3 试验部分 9
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5 参考文献 15
6 指导教师简介 16
7 致谢 17
1 绪论
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