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The Stabilization of a Soft Soil Subgrade Layer Using a New Sustainable Binder Produced from Free-Cement Blending of Waste Materials Fly Ashes

Jafer, HM and Atherton, W and Ruddock, F and Loffill, E The Stabilization of a Soft Soil Subgrade Layer Using a New Sustainable Binder Produced from Free-Cement Blending of Waste Materials Fly Ashes. In: 10th international conference on the bearing capacity of roads, railways and airfields, 28 June 2017 - 30 June 2017, Athens, Greece. (Accepted)

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Abstract

Recently, the production of blended cement and/or the development of new cementitious materials as binder alternatives in different civil engineering projects has noticeably increased. Using such materials could be considered as one of the sustainable solutions to reduce cement production and its effect on global warming. This study represents an evaluation of the geotechnical properties of soft soil stabilized with new sustainable binders produced from the blending of different types of waste materials. Initially, the experiments were conducted to optimize a calcium-based waste material (CBW) along with two different fly ashes (FA1 and FA2) used as pozzolanic activators. The outcome of this investigation indicated a significant reduction in plasticity index (PI) where it was decreased from 21 for the virgin soil to 13.17 for the soil treated with 12% of CBW. Additionally, the Unconfined compressive strength (UCS) was developed by factors of 4.6 and 5.1 with binary and ternary treatment respectively.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TE Highway engineering. Roads and pavements
Divisions: Built Environment
Civil Engineering
Date Deposited: 19 May 2017 11:14
Last Modified: 19 May 2017 11:14
URI: http://researchonline.ljmu.ac.uk/id/eprint/6530

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