| 一种两性聚羧酸减水剂对水泥净浆及混凝土早期性能的影响 |
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| 引用本文： | 何廷树,邹亚婷,杨仁和,徐一伦,李同新.一种两性聚羧酸减水剂对水泥净浆及混凝土早期性能的影响[J].硅酸盐通报,2018,37(6):1852-1855. |
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| 作者姓名： | 何廷树 邹亚婷 杨仁和 徐一伦 李同新 |
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| 作者单位： | 西安建筑科技大学材料与矿资学院,西安,710055;陕西友邦新材料科技有限公司,西安,712046 |
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| 基金项目： | 陕西省工业攻关项目(2016GY-205) |
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| 摘 要： | 通过引入2-丙烯酰胺-2-甲基丙磺酸(AMPS)和甲基丙烯酰氧乙基三甲基氯化铵(DMC)两种小单体,并采用相对分子量较大的甲基烯丙基聚氧乙烯醚(HPEG)大单体,合成了一种两性聚羧酸减水剂ZQ-3,使用红外光谱对其结构进行了确证.将该减水剂与另外三种聚羧酸减水剂进行了性能对比研究.水泥净浆实验结果表明:减水剂ZQ-3具有良好的分散性及分散性经时保持性能,对净浆的凝结时间影响不大;混凝土实验及XRD分析表明:减水剂ZQ-3能够促进水泥的早期水化,明显提高混凝土蒸养脱模强度和早期强度.
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| 关 键 词： | 两性聚羧酸减水剂 阳离子单体 长侧链 蒸养 早强 |
Synthesis and Early Performance of Amphoteric Polycarboxylate Superplasticizers |
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| HE Ting-shu,ZOU Ya-ting,YANG Ren-he,XU Yi-lun,LI Tong-xin.Synthesis and Early Performance of Amphoteric Polycarboxylate Superplasticizers[J].Bulletin of the Chinese Ceramic Society,2018,37(6):1852-1855. |
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| Authors: | HE Ting-shu ZOU Ya-ting YANG Ren-he XU Yi-lun LI Tong-xin |
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| Abstract: | A amphoteric polycarboxylate superplasticizer ( APC ) ZQ-3 with length side chain, 2-acrylamido-2-methylpropane sulfonic acid ( AMPS ) and cationic monomer methacrylatoethyl trimethyl ammonium chloride ( DMC ) was synthesized through radical polymerization. The structure was determined by FTIR.The properties of ZQ-3 were studied and compared with other three polycarboxylate superplasticizer.The results show that ZQ-3 has better dispersion and better retention of dispersion, and little effect on paste setting time.Concrete test and XRD analysis show that ZQ-3 can promote the early hydration of cement, and obviously improve the early strength of steam-curing concrete. |
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| Keywords: | amphoteric polycarboxylate superplasticizer (APC) cationic monomer length side chain steam-curing early strength |
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