| 掺入粉煤灰提高碾压混凝土耐久性的试验研究 |
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| 引用本文： | 刘数华,方坤河,曾力.掺入粉煤灰提高碾压混凝土耐久性的试验研究[J].水泥工程,2006(6):22-24. |
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| 作者姓名： | 刘数华 方坤河 曾力 |
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| 作者单位： | 1. 清华大学土木工程系建筑材料研究所,北京,100084;武汉大学水资源与水利工程科学国家重点实验室,湖北,武汉,430072
2. 武汉大学水资源与水利工程科学国家重点实验室,湖北,武汉,430072 |
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| 摘 要： | 试验采用在碾压混凝土中掺入粉煤灰(其掺量占胶凝材料总量的10%～45%)的方法来提高碾压混凝土耐久性(包括强度、干缩、耐磨性和抗冻性)。试验结果表明:(1)粉煤灰掺量小于30%时能提高碾压混凝土强度但影响度不大;(2)随着粉煤灰掺量的增加,碾压混凝土的干缩呈直线降低,且抗磨性和抗冻融能力明显提高;(3)粉煤灰能有效提高碾压混凝土的耐久性,且在试验条件下的最佳掺量为30%。
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| 关 键 词： | 碾压混凝土 粉煤灰 耐久性 机理 |
| 文章编号： | 1007-0389（2006）06-0022-03 |
| 收稿时间： | 2006-08-11 |
| 修稿时间： | 2006年8月11日 |
Experimental Researches on Durability of Roller Compacted Concrete by Mixing Fly Ash |
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| Liu Shuhua,Fang Kunhe,Zeng Li.Experimental Researches on Durability of Roller Compacted Concrete by Mixing Fly Ash[J].Cement Engineering,2006(6):22-24. |
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| Authors: | Liu Shuhua Fang Kunhe Zeng Li |
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| Affiliation: | 1.Institute of building Materials, Tsinghua University, Beijing, 100084 |
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| Abstract: | In the experiment the author study on increasing the durability (including strength, dry shrinkage, abrasion resistance and freeze resistance) of roller compacted concrete (RCC) by mixing fly ash. The research results show that when the fly ash content is under 30%, the strength of RCC can be increased but the effect is a little; and with the fly ash content increased the dry shrinkage of the RCC reduced straightly, and the abrasion resistance and freeze resistance increased obviously. (3) fly ash can increase durability of the RCC and under the experiment condition, the perfect mixing content is 30%. |
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| Keywords: | RCC fly ash durability mechanism |
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