Durability of Soft Soil Treated with Soda Residue and Ground Granulated Blast Furnace Slag in a Soaking Environment
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 3
Abstract
This study investigates the effect of soaking conditions on the durability of soft soil treated with soda residue and ground granulated blast furnace slag. Specimens were cured for up to 60 days and soaked in solutions for up to 28 days. Tap water (T), NaCl (N), (M), and (N-M) were selected as soaking solutions. The results indicate that the stabilized soil was durable in tap water even cured for two days. When soaked in T or N environment, the strength of the specimens increased with soaking period due to dense structure and hydrated gel filling between matrix. The strength of the specimens soaked in solutions was slightly higher than that in tap water. However it decreased slightly after soaking for 28 days in M or N-M environment due to looseness at the ends of the specimens and formation of ettringite cluster. The effects of reinforcing and filling-in of hydration products, including calcium silicate hydrates, ettringite, calcium chloroaluminate hydrates and calcium chloride hydroxide hydrate, contributed to an improvement in strength and durability.
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Acknowledgments
Financial support for this research was provided by the National Natural Science Foundation of China (Grant No. 41772332) and Major Project of Technical Innovation in Hubei Province (Grant No. 2017ACA090). International Science Editing (http://www.internationalscienceediting.com) is acknowledged for editing this manuscript.
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 3 • March 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Nov 29, 2018
Accepted: Jul 22, 2019
Published online: Dec 17, 2019
Published in print: Mar 1, 2020
Discussion open until: May 17, 2020
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