Dynamic properties of moderately expansive soil stabilized with class C fly ash

Troyee Tanu Dutta, Sireesh Saride

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)


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.

Original languageEnglish
Title of host publicationGeotechnical Special Publication
Number of pages10
Publication statusPublished - Jan 2016
Externally publishedYes
EventGeo-Chicago 2016 - Sheraton Chicago Hotel & Towers, Chicago, United States of America
Duration: 14 Aug 201618 Aug 2016
https://ascelibrary.org/doi/book/10.1061/9780784480120 (Proceedings)

Publication series

NameGeotechnical Special Publication
PublisherAmerican Society of Civil Engineers
ISSN (Print)0895-0563


ConferenceGeo-Chicago 2016
CountryUnited States of America
Internet address

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