| 水泥性质对半柔性复合混凝土使用性能的影响 |
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| 引用本文： | 杜少文.水泥性质对半柔性复合混凝土使用性能的影响[J].混凝土,2012(3):95-97. |
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| 作者姓名： | 杜少文 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助项目(CHD2011JC127) |
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| 摘 要： | 通过室内试验评价了水泥类型对水泥乳化沥青半柔性复合混凝土性能的影响,采用X衍射分析揭示了不同水泥在乳化沥青中的水化机理差异。结果表明,不同水泥对复合混凝土的马歇尔稳定度影响较小,但是对劈裂强度和水稳定性影响较大,传统的马歇尔设计方法无法区分水泥类型对混凝土的影响。为了保证混凝土的强度和水稳定性,宜选择硅酸三钙、铝酸三钙等含量较高的水泥,同时限制水泥中活性掺和材料的含量。另外,增加吸水性较强的熟料含量有助于促进乳化沥青破乳,提高混凝土的早期强度和水稳定性。
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| 关 键 词： | 水泥 乳化沥青 强度 水化机理 |
Effect of cement types on performance properties of semi-flexible composite concrete |
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| DU Shao-wen.Effect of cement types on performance properties of semi-flexible composite concrete[J].Concrete,2012(3):95-97. |
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| Authors: | DU Shao-wen |
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| Affiliation: | DU Shao-wen(Key Laboratory for Special Region Highway Engineering of Ministry of Education,Chang’an University,Shaanxi,Xi’an 710064,China) |
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| Abstract: | The effect of cement types on performance properties of cement asphalt emulsion semi-flexible concrete is evaluated by laboratory test.The hydrate mechanism of different types cement is explained by X-ray test.Test results show cement types have little influence on the marshal stability of semi-flexible concrete,but have greatly influence on splitting strength and moisture resistance of the concrete.The traditional Marshall design method can not different the effect of cement types on the concrete.In order toe ensure the strength and moisture resistance of the concrete,the cement with higher content tricalcium silicate and tricalcium aluminate is recommend to use in the concrete,and the content of active mixing material in cement should be restricted.In addition,cement clinker with stronger water absorption materials can accelerate the asphalt emulsion breaking,improve the early strength and moisture resistance ability of the concrete. |
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| Keywords: | cement asphalt emulsion strength hydrate mechanism |
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