Soil Stabilization with Calcined Paper Sludge: Laboratory and Field Tests
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 6
Abstract
Two investigative stages are presented in this study, which aim to establish basic standards for the use of calcined paper sludge (CPS) in the stabilization of soils. The soils were stabilized with CPS and with mixtures of CPS and cement (). The total percentage of binder was between 3 and 6% by weight. The blending ratios (by weight) of the CPS:C mixtures were and . The first stage took place in the laboratory, and the second stage, in the field, involved in situ stabilization of 250 m of subgrade using dry-mix methods. The bearing capacity of the stabilized soils was determined in the laboratory. In the second stage, the densities of the subgrade were measured in the field following compaction and deflections at 7 days. Furthermore, the evolution of its unconfined compressive strength (UCS) was measured over 90 days. The results reveal optimal mechanical behavior of the stabilized soil at CPS:C ratios of approximately .
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Acknowledgments
This research was funded by the Spanish Industry Ministry. The authors would like to thank CEDINSA’s team and the Catalan regional highways administration for their support during the in situ test section, and CDEM Group B.V. for supplying the calcined paper sludge.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 6 • June 2012
Pages: 666 - 673
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Mar 15, 2011
Accepted: Nov 30, 2011
Published online: Dec 2, 2011
Published in print: Jun 1, 2012
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