| 混凝土含水率对强度影响的试验 |
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| 引用本文： | 刘保东,李鹏飞,李林,康银庚.混凝土含水率对强度影响的试验[J].北方交通大学学报,2011(1):9-12. |
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| 作者姓名： | 刘保东 李鹏飞 李林 康银庚 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京100044 |
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| 基金项目： | 科技部“国家攻关”项目资助（2006BAJ06B04）; 交通部西部交通建设科技项目资助（200631822302-06） |
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| 摘 要： | 通过浸泡时间不同,改变混凝土试块的含水率,测试不同混凝土试块的含水率,并研究含水率变化对试块抗压强度影响的规律.研究表明：混凝土标号越高,饱和含水率越小;试块的面积体积比越小,饱和含水率越小;含水率未达1%时,属于表面吸水,对试块的抗压强度影响不明显;同样标号的混凝土试块,其测试抗压强度随着含水率的增高而降低,自然养护的试块,其测试抗压强度随着含水率的增大下降的速度大于标准养护试块.
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| 关 键 词： | 含水率 抗压强度 浸泡时间 |
Experimental study on influence of water content on concrete strength |
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| LIU Baodong,LI Pengfei,LI Lin,KANG Yingeng.Experimental study on influence of water content on concrete strength[J].Journal of Northern Jiaotong University,2011(1):9-12. |
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| Authors: | LIU Baodong LI Pengfei LI Lin KANG Yingeng |
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| Institution: | (School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | The water content of concrete specimen can be changed through different immersion time.By experimental method,water contents of the different specimens are measured.The rules of effect of the water content on the compressive strength of the specimens are studied.It is showed that： the higher of the concrete grade,the smaller of the saturated water content;the smaller of the mass-surface ratio,the smaller of the saturated water content.The impact of the specimen on the compressive strength is not obvious when the water content is less than 1%,which is the surface water absorption.The tested compressive strength decreased with the water content increasing for the same concrete grade specimens.The decreased speed of the compressive strength for the natural curing concrete specimens is greater than the standard curing specimens. |
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| Keywords: | water content compressive strength immersion time |
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