›› 2006, Vol. 27 ›› Issue (S1): 909-912.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research on utilization of coal refuse stabilized with lime and fly-ash as a road base material

JIA Zhi-rong1, 2, ZHAO Cheng-quan2, JU Ze-qing2, YANG Ruo-chong1   

  1. 1. Key Laboratory of Traffic Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. School of Architectural Engineering, Shandong University of Technology, Zibo 255049, China
  • Received:2006-06-26 Published:2006-12-15

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Abstract: Coal refuse, a kind of special softening coarse grained soil, has amounted to 7 billion tons throughout China; and with l50 million tons being produced annually. Not only plenty of lands are occupied, but also colliery wastes pollute the natural environments. The paper focuses on the use of coal refuses, concerning the feasibility of coal refuses as a road base materials. Coal refuse mixtures are tested with 10 different lime and fly-ash contents and different aggregate gradation. Unconfined Compressive strength modulus of resilience and temperature shrinkage coefficient are tested and analyzed. Mixture ratio is recommended by the research. Proper ratio of lime to fly-ash is 1:2, percentage of lime and fly-ash is 30 %. Preliminary results indicate that coal refuse can be used as a sub-base material of high-class road or base material of low-class road.

Key words: softening coarse grained soil, coal refuse, lime, fly-ash, mixture ratio, road engineering

CLC Number: 

  • TU 449
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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