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Advances in Civil Engineering
Volume 2017 (2017), Article ID 8643839, 6 pages
https://doi.org/10.1155/2017/8643839
Research Article

Effect of Modified Rubber Particles Mixing Amount on Properties of Cement Mortar

Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China

Correspondence should be addressed to Mei-ling Cao; moc.621@5102_gniliemoac

Received 1 December 2016; Accepted 4 January 2017; Published 29 January 2017

Academic Editor: Peng Zhang

Copyright © 2017 Gang Xue and Mei-ling Cao. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The crumb rubber cement mortar is prepared by the crumb rubber aggregates in 60 mesh which are modified by 1% polyvinyl alcohol (PVA) solution. Some mechanical properties of cement mortar with different crumb rubber aggregate amounts are researched including compressive strength, flexural strength, the ratio of compressive strength to flexural strength, impact resistance, and dry contraction percentage. In our tests, we consider six kinds of the rubber contents, 0%, 7.5%, 15%, 19%, 22.5%, and 30%, respectively. The optimal mixing amount of crumb rubber is determined by measuring three indices, the ratio of compressive strength to flexural strength, impact resistance, and dry contraction percentage. It is shown by test that the ratio of compressive strength to flexural strength is the smallest when the mixing amount of rubber is 19%; meanwhile high impact resistance and rational drying shrinkage are observed. The optimal mixing amount of the rubber particles is 19% determined by this test.