| 水泥粒径分布对混凝土抗压强度影响的试验研究 |
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| 引用本文： | 陈长久,安雪晖.水泥粒径分布对混凝土抗压强度影响的试验研究[J].混凝土,2011(8). |
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| 作者姓名： | 陈长久 安雪晖 |
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| 作者单位： | 清华大学水利水电工程系水沙科学与水利水电工程国家重点实验室,北京,100084 |
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| 摘 要： | 为了考察水泥粒径分布对混凝土抗压强度的影响,开展了试验研究。首先,将普通硅酸盐水泥经气流粉碎机生产获得化学组分相同、粒径分布不同的超细水泥,然后通过掺加超细水泥改变水泥粒径分布。分别测定了3种不同超细水泥掺量下的水泥等温放热曲线和混凝土抗压强度。试验结果表明:①掺加适量超细水泥能够优化水泥粒径分布,提高水泥利用率,增加混凝土抗压强度;②混凝土抗压强度并不一定随超细水泥掺量的增加而递增,存在一个最佳的超细水泥掺量,使水泥粒径分布最优,从而获得最高的混凝土抗压强度。
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| 关 键 词： | 混凝土抗压强度 水泥粒径分布 超细水泥 气流粉碎机 |
Experimental study of cement's particle size effects on the compressive strength of concrete |
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| CHEN Chang-jiu,AN Xue-hui.Experimental study of cement's particle size effects on the compressive strength of concrete[J].Concrete,2011(8). |
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| Authors: | CHEN Chang-jiu AN Xue-hui |
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| Affiliation: | CHEN Chang-jiu,AN Xue-hui (Department of Hydraulic Engineering,State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | In order to study the effects of cement's particle size distribution on the compressive strength of concrete,the experimental work car-ried on.Firstly,the micro cement(MC)was manufactured from ordinary Portland cement by fluid jet mill,which had the same chemical composi-tions and different particle size distribution(PSD).Then,the PSD of cement was adjusted by adding some MC.The isothermal hydration heat of cement with three different amount of MC added and compressive strength of concrete were exmained.The... |
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| Keywords: | compressive strength of concrete cement particle size distribution micro-cement fluid jet mill |
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