Permeability characteristics of soil-fly ash mix

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Document Type

Article

Source Title

ARPN Journal of Engineering and Applied Sciences

Volume

10

Issue

15

First Page

6440

Last Page

6447

Publication Date

1-1-2015

Abstract

Permeability is vital to every project where the flow of water through soil is a concern (e.g. dam seepage, cutoff wall and diaphragm wall). There are numerous studies about the vertical permeability of soil since ASTM D2434 Standard Test Method for Permeability of Granular Soils (Constant Head & Falling Head) is being followed. On the contrary, there are only a few studies that focused on the horizontal permeability of soils. Five (5) soil samples with different mixes of silty sand and fly ash were obtained for comparison. Rigorous laboratory tests was performed to determine the individual properties. Tests such as specific gravity tests, Atterberg limit tests (liquid limit, plastic limit and plasticity index), emax and emin test/relative density tests, particle size analyses, microscopic characterizations, elemental composition tests and permeability tests were performed to garner data that were utilized for the model. A new permeability set-up was used in the determination of the horizontal permeability. A relationship between the percentage of fly ash and the coefficient of permeability was established, the said relationship was utilized to develop a model that will predict the coefficient of permeability when the percentage of fly ash is available. ©2006-2015 Asian Research Publishing Network (ARPN).

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Disciplines

Civil Engineering

Keywords

Fly ash—Permeability; Soil permeability

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