| Strength and Microstructure of Sulphoaluminate Cement Containing Ultra- Fine CaCO3 |
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| 作者姓名： | ZHOU Shi - hu HUANG Jia - mu |
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| 作者单位： | College of Materials Science and Engineering, Chongqing University, Chongqing 400045, P. R. China |
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| 摘 要： | The existence of ettringite in sulphoaluminate cement hardened paste is mainly in the form of pole-like crystal,which causes unfavorable effect on the cement.In this paper the strength and microstructure of the sulphoaluminate cement containing ultra-fine CaCO_3 weze discussed.Experimet results show that the strength of sulphoaluminate cement was obviously improved by adding 3% of ultra-fine CaCO_3.After curing for 28d,the compressive strength of cement paste and mortar is 100.6MPa and 94.1MPa respectively,and the bending strength of the mortar reached 12.5MPa.SEM study on hardened paste of sulphoaluminate cement containing ultra-fine CaCO_3 showed that its structure was dense and homogeneous,there was hardly any massive crystall detected.
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| 关 键 词： | ultra-fine CaCO_3 sulphoaluminate cement compressive strength bending strength microstructure |
| 收稿时间： | 1/9/2006 12:00:00 AM |
| 修稿时间： | 1/9/2006 12:00:00 AM |
Strength and Microstructure of Sulphoaluminate Cement Containing Ultra- Fine CaCO3 |
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| ZHOU Shi - hu,HUANG Jia - mu.Strength and Microstructure of Sulphoaluminate Cement Containing Ultra- Fine CaCO3[J].Storage & Process,2006(4):121-124. |
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| Authors: | ZHOU Shi - hu HUANG Jia - mu |
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| Institution: | College of Materials Science and Engineering, Chongqing University, Chongqing 400045, P. R. China |
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| Abstract: | The existence of ettringite in sulphoaluminate cement hardened paste is mainly in the form of pole-like crystal,which causes unfavorable effect on the cement.In this paper the strength and microstructure of the sulphoaluminate cement containing ultra-fine CaCO_3 weze discussed.Experimet results show that the strength of sulphoaluminate cement was obviously improved by adding 3% of ultra-fine CaCO_3.After curing for 28d,the compressive strength of cement paste and mortar is 100.6MPa and 94.1MPa respectively,and the bending strength of the mortar reached 12.5MPa.SEM study on hardened paste of sulphoaluminate cement containing ultra-fine CaCO_3 showed that its structure was dense and homogeneous,there was hardly any massive crystall detected. |
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| Keywords: | ultra-fine CaCO_3 sulphoaluminate cement compressive strength bending strength microstructure |
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