Effect of Organic Matter Content and Binder Quantity on the Uniaxial Creep Behavior of an Artificially Stabilized Soil
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 140, Issue 9
Abstract
The objective of this work is to analyze, based on the results of uniaxial creep tests, the effect of organic matter content and binder quantity on the creep behavior of a Portuguese soft soil chemically stabilized with binders. In general, the results show that the application of a creep load induces a slight degradation of the mechanical properties of the composite material of the same age, as a consequence of the breakage of some cementation bonds owing to the creep deformation. This degradation grows with the increases in binder quantity and the decreases in organic matter content. The uniaxial creep tests indicate an increase in the creep strain rate with log time, allowing the definition of two creep compression indices, and . Whereas the initial creep compression index () is independent of the strength and shows a low scatter of values (0.00013–0.0003), the final creep compression index () decreases with the increment of the strength, i.e., for higher binder quantities and lower organic matter contents. The results also reveal that the ratio is almost unchangeable, 2.0–3.0.
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Acknowledgments
The authors express their gratitude to Cimentos de Portugal (CIMPOR) for supplying the binders used in the work, and to the institutions that financially supported the research: Centro de Investigação em Engenharia Civil (CIEC), Centro de Investigação em Ciências da Construção (CICC), and Fundação para a Ciência e a Tecnologia (FCT) (PTDC/ECM/101875/2008).
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 140 • Issue 9 • September 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Nov 29, 2013
Accepted: Jun 2, 2014
Published online: Jun 25, 2014
Published in print: Sep 1, 2014
Discussion open until: Nov 25, 2014
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