| 轻骨料预湿时间、吸水率对自密实轻骨料混凝土性能的影响 |
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| 引用本文： | 曾冲盛.轻骨料预湿时间、吸水率对自密实轻骨料混凝土性能的影响[J].福建建筑,2012(11):74-76,34. |
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| 作者姓名： | 曾冲盛 |
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| 作者单位： | 厦门市建筑科学研究院集团股份有限公司 |
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| 基金项目： | 厦门市科技计划项目(3502z20100044);建设部标准编制项目(建标[2010]43号) |
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| 摘 要： | 本文以24h吸水率表征轻骨料吸水性,通过试验验证、模型分析及扫描电子显微镜,研究轻骨料预湿时间、吸水率对自密实轻骨料混凝土工作性和骨料界面过渡区的影响。结果表明制备自密实轻骨料混凝土时,宜选用24h吸水率小于10%的轻骨料,且轻骨料预湿时间不宜过短。轻骨料的多孔性和粗糙表面有利于改善轻骨料与水泥石的粘结性能。
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| 关 键 词： | 预湿时间 吸水率 自密实轻骨料混凝土 工作性 粘结性能 |
The effort of pre-wetting time,water absorption of Lightweight aggregate on Self-compacting lightweight aggregate concrete properties |
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| ZENG Chongsheng.The effort of pre-wetting time,water absorption of Lightweight aggregate on Self-compacting lightweight aggregate concrete properties[J].Fujian Architecture & Construction,2012(11):74-76,34. |
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| Authors: | ZENG Chongsheng |
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| Affiliation: | ZENG Chongsheng(Xiamen Academy of Building Research Group Co,.LTD,Xiamen 361004) |
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| Abstract: | In this paper, water absorption of lightweight aggregate charactcnzed by 24h water absorption, mrougn expenmem, mooel anatysis anu summing electron microscopy to study he impact of pre - wetted time, water absorption of lightweight aggregate on self - compacting lightweight concrete workability and aggregate interfacial transition zone. The results indicated that as prepared self - compacting lightweight aggregate concrete, the 24h water absorption of light-weight aggregate should be less than 10%, and pre - wetting time should not be too short. The porosity and rough surface of lightweight aggregate wiU be con- ducive to improving bonding properties of lightweight aggregate and cement. |
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| Keywords: | Pre - wetting time Water absorption Self - compacting lightweight concrete Workability Bonding property |
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