Influence of Adscititious Materials on the Porosity of Cement Concrete

周敏; 李国忠

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Influence of Adscititious Materials on the Porosity of Cement Concrete

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- Influence of Adscititious Materials on the Porosity of Cement Concrete
- 外加材料对水泥混凝土孔隙率的影响
- Vol. 30, Issue 4, Pages: 395-400(2009)
- 作者机构：
  
  济南大学材料科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
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- Published：2009
- 稿件说明：
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周敏, 李国忠. Influence of Adscititious Materials on the Porosity of Cement Concrete[J]. 2009, 30(4): 395-400.
DOI：

周敏, 李国忠. Influence of Adscititious Materials on the Porosity of Cement Concrete[J]. 2009, 30(4): 395-400. DOI：

摘要

采用正交试验法研究了聚合物乳液、减水剂、聚丙烯纤维对水泥混凝土孔隙率的影响

并进行了线性回归分析;通过孔分析研究了混凝土试样的孔隙率及孔径分布情况;利用扫描电镜以及能谱分析

观察了骨料与基体材料界面过渡区的微观结构

并探讨了聚合物乳液改善混凝土孔隙率的机理.研究结果表明:掺加聚合物乳液、减水剂能够明显降低水泥混凝土的孔隙率

改善孔结构

增加密实度

使水泥混凝土的耐久性得到提高.

Abstract

The influence of polymer latex

water reducer and polypropylene fiber on the porosity of cement concrete was derived by orthogonal experiment and a linear regression was conducted.The porosity and distribution of the pore structure of concrete were studied by porosity analysis.The microstructure of the interface transition between aggregate and matrix materials was observed with SEM and EDS analysis.The effect mechanism of polymer latex on the improvement of porosity was also studied.The results show that polymer latex and water reducer can reduce the porosity

improve the pore structure

increase the density and improve the durability of cement concrete.

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Keywords

references

Arandigoyen M,Alvarez J I.Pore structure and mechanical properties of cement-lime mortars[J].Cement andConcrete Research,2007,37:767-775.

申爱琴,李祝龙,王小明.聚合物乳液改性水泥混凝土的微观结构[J].混凝土,2001(3):40-42.Shen Aiqin,Li Zhulong,Wang Xiaoming.Microcosmic structure of modified cement concrete with polymer latex[J].Concrete,2001(3):40-42.(in Chinese)

周敏,许红升,李国忠,等.聚丙烯纤维增强水泥砂浆的性能研究[J].化学建材,2006,22(2):31-35.Zhou Min,Xu Hongsheng,Li Guozhong,et al.Study of properties of polypropylene fiber reinforced cement mortar[J].Chemical Materials for Construction,2006,22(2):31-35.(in Chinese)

袁勇.混凝土结构早期裂缝控制[M].北京:科学出版社,2004.

郑少华,姜奉华.试验设计与数据处理[M].北京.中国建材工业出版社,2004.

Zhang Wensheng,Li Beixing,Wang Hongxia,et al.Analysis of pore structures and their relations with strength ofhardened cement paste[J].Journal of Wuhan University of Technology-Mater.Sci.Ed.,2005,20(1):114-117.

葛兆明.混凝土外加剂[M].北京:化学工业出版社,2004.

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