Successful Application of CLSM on a Weak Pavement Base/Subgrade for Heavy Truck Traffic
Publication: Journal of Performance of Constructed Facilities
Volume 21, Issue 1
Abstract
Lack of proper pavement base and subgrade compaction leads to premature failures that account for millions of dollars in damages. Controlled low-strength material (CLSM) concrete was introduced in this study as pavement base material near a manhole where proper compaction is unachievable. Rut-resistant stone matrix asphalt was placed on top of the CLSM as a wearing surface layer. Dynamic cone penetrometer (DCP) testing was used to monitor CLSM construction. One day after placing, the CLSM gained sufficient strength to support construction traffic. Further, DCP results indicated that the CLSM possessed uniform characteristics of concrete that could improve the load-bearing capacity and serviceability of the pavement near the manhole. After 18 months of heavy truck traffic, maximum rutting was , well below the failure criteria of . Based on cost and performance, CLSM concrete has the potential to improve problematic areas in pavement.
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Acknowledgments
This study was partly support by the Kaohsiung City government. The writers express their sincere thanks to Dr. D. H. Chen and Mr. S. C. Chen for his editorial comments and suggestions. The assistance of Q. Z. Liao, Z. R. Zhong, J. H. Qiu, and M. W. Weng in some portions of the experiments is greatly appreciated.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 21 • Issue 1 • February 2007
Pages: 70 - 77
Copyright
© 2007 ASCE.
History
Received: Apr 22, 2005
Accepted: Dec 20, 2005
Published online: Feb 1, 2007
Published in print: Feb 2007
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