养护温度对喷射混凝土性能影响的试验研究

发布时间：2019-03-28 15:13

【摘要】：为探究不同地温环境对喷射混凝土性能的影响,本研究在实验室模拟相应温度条件,开展不同养护温度下喷射混凝土强度、耐久性及混凝土与岩石粘结强度的研究。结果表明,在25~40℃养护条件下,随养护温度的提高,喷射混凝土的抗压强度、混凝土与岩石的粘结强度呈增大趋势,但在60℃养护条件下抗压强度和粘结强度均降低并随龄期呈先增大后降低的趋势;25~60℃养护条件下的混凝土抗渗等级都为最高等级,氯离子渗透性皆处于低级;随温度升高,其抗渗性、抗氯离子渗透性、抗碳化能力均有所降低。
[Abstract]:In order to investigate the influence of different ground temperature on the performance of shotcrete, the strength, durability and bond strength between concrete and rock under different curing temperatures were studied by simulating the corresponding temperature conditions in the laboratory. The results show that the compressive strength of shotcrete and the bond strength between concrete and rock increase with the increase of curing temperature under the curing condition of 25 鈩，

本文编号：2448981