| 新型聚羧酸接枝保坍剂的合成与性能研究 |
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| 引用本文： | 刘春燕,王自为,卫晓慧,任建国,裴继凯. 新型聚羧酸接枝保坍剂的合成与性能研究[J]. 新型建筑材料, 2012, 0(2): 42-45,64 |
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| 作者姓名： | 刘春燕 王自为 卫晓慧 任建国 裴继凯 |
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| 作者单位： | 1. 山西大学化学化工学院,山西太原,030006
2. 山西合盛邦砼建材有限公司,山西太原,030006 |
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| 摘 要： | 介绍一种新型聚羧酸接枝保坍剂(JL-PC)的合成,研究了该保坍剂在混凝土中的使用效果.结果表明,与单掺减水剂(HS-1)的混凝土相比,复掺减水剂(HS-1)和保坍剂(JL-PC)的混凝土在保坍性能上具有明显的优势.尤其当保坍剂JL-PC掺量为水泥用量的0.09％时,混凝土的各项性能达到最佳:减水率达31.9％,泌水率降至0.4％,坍落度达到25.9cm,60min内坍落度基本无损失；3、7、28d抗压强度及抗压强度比也达到最大.
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| 关 键 词： | 接枝共聚 混凝土保坍剂 混凝土减水剂 复掺 性能 |
Research on synthesis and performance of a novel polycarboxylate grafted slump retaining agent |
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| LIU Chunyan , WANG Ziwei , WEI Xiaohui , REN Jianguo , PEI Jikai. Research on synthesis and performance of a novel polycarboxylate grafted slump retaining agent[J]. New Building Materials, 2012, 0(2): 42-45,64 |
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| Authors: | LIU Chunyan WANG Ziwei WEI Xiaohui REN Jianguo PEI Jikai |
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| Affiliation: | 1.School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,Shanxi,China; 2.Shanxi HeSheng BangTong Building Materials Co.Ltd.,Taiyuan 030006,Shanxi,China) |
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| Abstract: | The synthesis of a novel poly-carboxylic grafted slump retaining agent named as JL-PC has been introduced and the use effect of the slump retaining agent in concrete experiments has been particularly studied.The results indicate that the concrete mixed with water reducer(HS-1) and slump retaining agent(JL-PC) has a better performance of slump retention than the concrete only mixed with water reducer(HS-1).In particular,when the content of slump retaining agent is 0.09% of cement amount,the properties of concrete reach high-points:water-reducing rate is 31.9%.The slump loss is 25.9 cm,which basically keep no change within 60 min.The bleeding rate drops to 0.4%.The compressive strength and the rate of compressive strength in 3,7,28 d also have the optimum effect. |
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| Keywords: | grafted copolymerization slump retaining agent water reducer compound mix performance |
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