沙漠砂混凝土高温后劈裂抗拉强度试验研究

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英文篇名：EXPERIMENTAL RESEARCH ON THE SPLITTING TENSILE STRENGTH OF DESERT SAND CONCRETE AFTER HIGH TEMPERATURE 作者：孙帅 ; 刘海峰 英文作者：SUN Shuai;LIU Haifeng;School of Civil and Hydraulic Engineering,Ningxia University; 关键词：沙漠砂混凝土 ; 高温 ; 劈裂抗拉强度 ; 沙漠砂替代率 英文关键词：desert sand concrete;;high temperature;;splitting tensile strength;;desert sand replacement rate 中文刊名：GYJZ 英文刊名：Industrial Construction 机构：宁夏大学土木与水利工程学院; 出版日期：2019-01-20 出版单位：工业建筑 年：2019 期：v.49;No.552 基金：国家自然科学基金项目(51368048,11162015);; 教育部“长江学者和创新团队发展计划”创新团队项目(IRT1067) 语种：中文; 页：GYJZ201901024 页数：5 CN：01 ISSN：11-2068/TU 分类号：145-148+174

摘要

为了研究沙漠砂混凝土高温后劈裂抗拉性能,进行了628个100 mm×100 mm×100 mm沙漠砂混凝土试件高温后劈裂抗拉强度试验,分析沙漠砂替代率和受火温度对沙漠砂混凝土高温后劈裂抗拉强度的影响,建立沙漠砂混凝土高温后劈裂抗拉强度劣化模型。研究表明:沙漠砂混凝土劈裂抗拉强度随着温度升高呈现先增大后减小趋势;随着沙漠砂替代率增加,高温后沙漠砂混凝土劈裂抗拉强度亦呈现先增大后减小趋势,沙漠砂替代率40%时,沙漠砂混凝土劈裂抗拉强度达到最大值。
        In order to study the splitting tensile properties of desert sand concrete,the splitting tensile strength experiments of 628 desert sand concrete specimens with the size of 100 mm × 100 mm × 100 mm were tested after being subjected to different temperatures. The influences of desert sand replacement rate and temperature on the splitting tensile strength of desert sand concrete were analyzed. The degradation models of splitting tensile strength of desert sand concrete after being subjected to high temperature were established. Experimental results showed that the splitting tensile strength of desert sand concrete increased firstly,and then declined with the temperature. At the same time,with the enhancement of desert sand replacement rate,the splitting tensile strength of desert sand concrete also increased firstly,and then declined. When desert sand replacement rate was equal to 40%,the splitting tensile strength of desert sand concrete reached the maximum value.

引文

[1] SEIF E S S A. Assessing the Engineering Properties of Concrete Made with Fine Dune Sands:an Experimental Study[J]. Arabian Journal of Geosciences,2013,6(3):857-863.
    [2] HADJOUDJA M, KHENFER M M, MESBAH H A, et al.Statistical Models to Optimize Fiber-Reinforced Dune Sand Concrete[J]. Arabian Journal of Science and Engineering,2014,39(4):2721-2731.
    [3]刘艳华,王铁良,白义奎,等.沙漠砂混合砂浆性能正交性试验[J].沈阳农业大学学报,2015,46(3):373-378.
    [4]杨维武,陈云龙,马菊荣,等.沙漠砂替代率对高强混凝土抗压强度影响研究[J].科学技术与工程,2014,14(19):289-292.
    [5]付杰,杨登,刘海峰,等.粉煤灰掺量和沙漠砂替代率对高强沙漠砂混凝土力学性能影响[J].科学技术与工程,2015,15(9):230-234.
    [6]刘宁,刘海峰,刘利明,等.高温对沙漠砂高强混凝土抗压强度影响[J].混凝土,2017(6):28-30.
    [7]吕剑波,刘宁,刘海峰.高温后沙漠砂混凝土抗压强度研究[J].混凝土,2017(7):129-133.
    [8]刘海峰,马荷姣,刘宁,等.粉煤灰及沙漠砂对混凝土抗碳化性能的影响[J].硅酸盐通报,2017,36(11):3823-3828.