[1]蒋亚清,许仲梓,黎非,等.聚羧酸类混凝土引气剂的工程性能[J].东南大学学报(自然科学版),2006,36(4):568-571.[doi:10.3969/j.issn.1001-0505.2006.04.015]
 Jiang Yaqing,Xu Zhongzi,Li Fei,et al.Engineering performance of polycarboxylate based air entraining agent[J].Journal of Southeast University (Natural Science Edition),2006,36(4):568-571.[doi:10.3969/j.issn.1001-0505.2006.04.015]
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聚羧酸类混凝土引气剂的工程性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第4期
页码:
568-571
栏目:
材料科学与工程
出版日期:
2006-07-20

文章信息/Info

Title:
Engineering performance of polycarboxylate based air entraining agent
作者:
蒋亚清12 许仲梓1 黎非3 李刚3
1 南京工业大学材料学院, 南京 210009; 2 河海大学材料科学与工程系, 南京 210098; 3 江苏省建筑材料研究设计院有限公司, 南京 210009
Author(s):
Jiang Yaqing12 Xu Zhongzi1 Li Fei3 Li Gang3
1 School of Materials Science, Nanjing University of Technology, Nanjing 210009, China
2 Department of Materials Science and Engineering, Hehai University, Nanjing 210098, China
3 Building Materials Research and De
关键词:
混凝土外加剂 引气剂 聚羧酸盐 气泡间距 冻融耐久性
Keywords:
concrete admixtures air entraining agent polycarboxylate spacing factor freeze and thaw durability
分类号:
TU528.572
DOI:
10.3969/j.issn.1001-0505.2006.04.015
摘要:
针对高性能混凝土高施工性、高耐久性要求,通过掺用具有梳型结构的聚羧酸类引气剂实现高性能混凝土,研究了聚羧酸类引气剂对混凝土含气量、气泡间距系数、工作性、强度和抗冻融耐久性的影响及其与减水剂的相容性,分析了聚羧酸类引气剂改善混凝土性能的机理.研究表明:聚羧酸类引气剂在掺量为0.006%时,混凝土含气量和气泡间距系数便可满足高性能混凝土工程使用要求; 该类引气剂与常用混凝土减水剂、缓凝剂相容,可与减水剂、缓凝剂复合使用; 除引气作用外,聚羧酸类引气剂还具有塑化和保塑作用,尤其适用于低水胶质量比混凝土,可在不降低混凝土强度的情况下,提高混凝土抗冻融耐久性.因此,聚羧酸类引气剂可用于配制高性能混凝土和自密实混凝土.
Abstract:
To achieve high workability and high durability of high performance concrete(HPC)polycarboxylate based air entraining agent(AEA)with comb-type structures is adopted. The effects of polycarboxylate based AEA on air content, spacing factor, workability, strength, freeze and thaw durability of concrete, and its compatibility to water reducers were investigated. It is found that, when 0.006% dosage of polycarboxylate based AEA is used, the air content and spacing factor of concrete can meet the needs of HPC engineering. And it has good compatibility to common types of water reducers and set-retarders. Besides entraining air to concrete, the polycarboxylate based AEA may enhance the fluidity and the slump retention ability of concrete. It can be used especially for concrete with lower ratio of water to cementations materials. Polycarboxylate based AEA may modify the freeze and thaw durability of concrete without strength reduction. Therefore polycarboxylate based AEA may be used to produce HPC and self compacting concrete.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省自然科学基金资助项目(BK2001085,BK2003425).
作者简介: 蒋亚清(1963—),男,博士生,教授级高级工程师,yqjiang@hhu.edu.cn; 许仲梓(联系人),男,博士,教授,博士生导师,zzxu@nut.edu.cn.
更新日期/Last Update: 2006-07-20