Dynamic Properties of Moderately Expansive Soil Stabilized with Class C Fly Ash

Dutta, T T and Saride, Sireesh (2016) Dynamic Properties of Moderately Expansive Soil Stabilized with Class C Fly Ash. In: Geo-Chicago 2016, August 14-18, 2016, Chicago, Illinois.

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Due to intense moisture fluctuations, expansive soil subgrades exhibit swelling and shrinkage behavior which results in the damage of lightweight structures such as pavements, single storied buildings etc. resting on them. Frequently, lime or cement is used as a stabilizer to improve the expansive soils. In addition, low calcium based stabilizers such as fly ash, grounded blast furnace slag etc. have been promoted to treat the expansive soils. In this study, an attempt has been made to study the influence of addition of fly ash on the dynamic properties of expansive soils. A class C fly ash is used to treat a moderately expansive soil having a free swell index of 50 %. A series of resonant column tests were performed to determine the small strain dynamic properties, shear modulus and damping ratio, of the untreated and fly ash treated expansive soils at different curing periods. Results indicate that with an increase in fly ash content, the shear modulus increases and damping ratio of the expansive soil decreases. In addition, with the increase in curing period there is an increase in shear modulus and decrease in damping ratio.

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IITH Creators:
IITH CreatorsORCiD
Saride, SireeshUNSPECIFIED
Item Type: Conference or Workshop Item (Paper)
Subjects: Civil Engineering > Soil Structure Interaction
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 15 Sep 2016 09:48
Last Modified: 01 Sep 2017 11:00
URI: http://raiith.iith.ac.in/id/eprint/2764
Publisher URL: https://doi.org/10.1061/9780784480144.094
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