| 葡萄糖酸钠与聚羧酸减水剂的复合效应研究 |
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| 引用本文： | 马保国,李高明,李相国,谭洪波,李正冈.葡萄糖酸钠与聚羧酸减水剂的复合效应研究[J].武汉理工大学学报,2011(1):52-55. |
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| 作者姓名： | 马保国 李高明 李相国 谭洪波 李正冈 |
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| 作者单位： | 武汉理工大学硅酸盐材料工程教育部重点实验室; |
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| 基金项目： | 国家“973”项目(2009CB623201); 武汉市青年科技晨光计划(200950431204) |
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| 摘 要： | 研究了聚羧酸减水剂与葡萄糖酸钠的复合使用对水泥浆体的凝结时间、净浆流动性、强度、水化热的影响,并采用XRD分析水泥水化产物的变化。结果表明:适量的葡萄糖酸钠能显著提高聚羧酸减水剂的分散性和分散保持性,改善水泥与聚羧酸减水剂的适应性,延长凝结时间,并使3 d7、d强度有所提高;单掺葡萄糖酸钠使水泥水化第2放热峰出现时间延迟2 h,但温峰值及水化热与空白样基本持平,1 d、7 d CH的生成量减少。复合使用葡萄糖酸钠与聚羧酸减水剂时,水泥净浆水化温峰出现时间延迟15 h,水化温峰提高,1 d、7 d CH的生成量较单掺葡萄糖酸钠时有所增大。
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| 关 键 词： | 葡萄糖酸钠 聚羧酸减水剂 分散 络合 水泥早期水化 |
Study on the Effects by Compounding the Polycarboxylic Type Superplasticizer with Sodium Gluconate |
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| MA Bao-guo,LI Gao-ming,LI Xiang-guo,TAN Hong-bo,LI Zheng-gang.Study on the Effects by Compounding the Polycarboxylic Type Superplasticizer with Sodium Gluconate[J].Journal of Wuhan University of Technology,2011(1):52-55. |
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| Authors: | MA Bao-guo LI Gao-ming LI Xiang-guo TAN Hong-bo LI Zheng-gang |
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| Affiliation: | MA Bao-guo,LI Gao-ming,LI Xiang-guo,TAN Hong-bo,LI Zheng-gang(Key Laboratory for Silicate Materials Science Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | After compounding sodium gluconate with polycarboxylate type superplasticizer,this paper studies the compound's influence on the fluidity properties,setting time,strength of cement paste of normal consistent cement paste,as well as the compounding of polycarboxylate type superplasticizers with sodium gluconate on cement hydration heat,at the same time using XRD analyse the hydration products.The results showed that appropriate amount of sodium gluconate can significantly improve the dispersion and dispersio... |
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| Keywords: | sodium gluconate polycarboxylate type superplasticizer dispersion complexing cement early hydration |
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