16 3 2011 6 Vol 16 No 3 JOURNAL OF HARBIN UNIVERSITY OF SCIENCE AND TECHNOLOGY Jun 2011 1 2 3 1 150040 2 150040 3 450052 1 3 4 > 1 ~ 3 > > U414 A 1007-2683 2011 03-0121- 06 Shrinkage Characteristics of Cement and Fly-ash Stabilized Waste Asphalt Mixture ZHANG Da-yong 1 YANG Lin 2 LIU Guang-huan 3 1 Institute of Engineering Survey and Design Northeast Forestry University Harbin 150040 China 2 College of Civil Engineering Northeast Forestry University Harbin 150040 China 3 Zhengzhou City Municipal Engineering Design and Research Institute Zhengzhou 450052 China Abstract To use the waste asphalt mixture as road base rationally the shrinkage characteristics of cement and fly-ash stabilized waste asphalt mixture is studied Through the orthogonal experimental design and the drying shrinkage test shrinkage test methods the characteristics of drying shrinkage and temperature shrinkage are studied The result shows that in dry shrinkage test the drying strain and coefficient increase with exposure time and water loss rate proportionally When the ratio of cement to fly-ash is 1 3 the shrinkage strain and shrinkage coefficient are minimum During the temperature shrinkage test the temperature shrinkage strain and shrinkage coefficient increase as the stabilizers increases linearly and increases as the temperature decreases By range analysis and variance analysis of the orthogonal experimental design method to determine the levels of factors to evaluate the shrinkage characteristics of mixture between the four factors The analysis shows the order of the shrinkage influence factors is the asphalt content > 1# to 3# coarse aggregate > fly ash content > cement content Key words cement and fly-ash asphalt mixture orthogonal test shrinkage character 2010-07 - 15 20081021 1965 E-mail lhfdoctor@ 163 com 1970
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