Influences of Polypropylene Fiber and SBR Polymer Latex on Abrasion Resistance of Cement Mortar

武汉理工大学学报-材料科学版(英文版), 2010, 25(4): 624-627. doi: 10.1007/s11595-010-0057-4

^1, , ^2, , ^3, , ^4,

1.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

2.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

3.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

4.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

基金项目: the Science Project from Department of Communication of Hubei Province

Influences of Polypropylene Fiber and SBR Polymer Latex on Abrasion Resistance of Cement Mortar

XU Fang ^1, , ZHOU Mingkai ^2, , LI Beixing ^3, , SHEN Weiguo ^4,

1.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

2.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

3.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

4.Key Laboratory of Silicate Material Science and Engineering of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China

Keywords： polypropylene fiber

Influences of polypropylene (PP) fiber and styrene-butadiene rubber (SBR) polymer latex on the strength performance,abrasion resistance of cement mortar were studied.The experimental results show that the flexural strength,brittleness index ( σF/σC) and abrasion resistance can be improved significantly by the addition of PP fiber and SBR polymer latex.The relationship between the flexural strength and abrasion resistance was analyzed,showing a good linear relationship between them.The reinforced mechanism of PP fiber and SBR polymer latex on cement mortar was analyzed by some microscopic tests.The test results show that the addition of SBR polymer latex has no significant influence on the cement hydragon after 7 d curing.Adding SBR polymer latex into cement mortar can form a polymer transition layer in the interfaces of PP fiber and cement hydrates,which improves the bonding properties between the PP fiber and cement mortar matrix effectively.

参考文献

[1]	E. Holt;M. Leivo .Cracking risks associated with early age shrinkage[J].Cement & concrete composites,2004(5):521-530.
[2]	Yoshihiko Ohama .Polymer-based Admixtures[J].Cement & concrete composites,1998(2/3):189-212.

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Influences of Polypropylene Fiber and SBR Polymer Latex on Abrasion Resistance of Cement Mortar

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