[1]陈怀成,钱春香,赵飞,等.聚羧酸系减水剂对水泥水化产物的影响[J].东南大学学报(自然科学版),2015,45(4):745-749.[doi:10.3969/j.issn.1001-0505.2015.04.023]
 Chen Huaicheng,Qian Chunxiang,Zhao Fei,et al.Effect of polycarboxylate-type superplasticizer on hydration products of cement[J].Journal of Southeast University (Natural Science Edition),2015,45(4):745-749.[doi:10.3969/j.issn.1001-0505.2015.04.023]
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聚羧酸系减水剂对水泥水化产物的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第4期
页码:
745-749
栏目:
材料科学与工程
出版日期:
2015-07-20

文章信息/Info

Title:
Effect of polycarboxylate-type superplasticizer on hydration products of cement
作者:
陈怀成1钱春香1赵飞1曲军2郭景强2Michael Danzinger2
1东南大学材料科学与工程学院, 南京211189; 2西卡(中国)有限公司, 苏州215121
Author(s):
Chen Huaicheng1 Qian Chunxiang1 Zhao Fei1 Qu Jun2 Guo Jingqiang2 Michael Danzinger2
1 School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2Sika(China)Ltd., Suzhou 215121, China
关键词:
聚羧酸系减水剂 水化产物 水化硅酸钙 聚合度
Keywords:
polycarboxylate-type superplasticizer hydration product C-S-H degree of polymerization
分类号:
TU528.45
DOI:
10.3969/j.issn.1001-0505.2015.04.023
摘要:
为了研究聚羧酸系减水剂与水泥水化产物间的作用机理,利用差示扫描量热仪研究了减水剂对水泥水化产物组成的影响;采用化学合成法制备出水化硅酸钙,在合成过程中分别掺入聚羧酸系或萘系减水剂,对合成的水化硅酸钙进行扫描电镜分析、核磁共振测试和傅里叶红外光谱分析.结果表明:与萘系减水剂相比,聚羧酸系减水剂促进了水泥的水化,使水泥石中水化硅酸钙凝胶及氢氧化钙的生成总量增大;聚羧酸系减水剂可以减小水化硅酸钙的颗粒尺寸,使其聚合度增大;减水剂能促使水化硅酸钙中的硅氧四面体聚合度增加,且聚羧酸系减水剂的增强效果优于萘系减水剂.
Abstract:
To research the effect mechanism of polycarboxylic-type superplasticizer and hydration products of cement, the effect of superplasticizer on the chemical composition of hydration products of cement was studied by the differential scanning calorimetry(DSC); calcium-silicate-hydrate(C-S-H)prepared by the chemical method, adding the polycarboxylate-type superplasticizer(PC)or naphthalene superplasticizer(NS), was tested and analyzed by the scanning electron microscope(SEM), the nuclear magnetic resonance spectrometer(NMR)and the Fourier transform infrared spectrometer(FT-IR). The results show that compared to the naphthalene superplasticizer, the polycarboxylate-type superplasticizer speeds up the hydration of the cement extremely, and the amount of hydration products especially C-S-H and Ca(OH)2 increases accordingly. The particle size of the C-S-H can be reduced by the PC and also the degree of its polymerization can be enlarged. The degree of polymerization of the silicon-oxy tetrahedron can be improved dramatically by the superplasticizer, and the PC holds better effect than the NS.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2015-01-04.
作者简介: 陈怀成(1986—),男,博士生;钱春香(联系人),女,博士,教授,博士生导师,cxqian@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51178104)、教育部博士点基金资助项目(20110092110033)、江苏省普通高校研究生科研创新计划资助项目(KYLX_0111)、江苏省333高层次人才培养工程资助项目、西卡(中国)有限公司资助项目.
引用本文: 陈怀成,钱春香,赵飞,等.聚羧酸系减水剂对水泥水化产物的影响[J].东南大学学报:自然科学版,2015,45(4):745-749. [doi:10.3969/j.issn.1001-0505.2015.04.023]
更新日期/Last Update: 2015-07-20