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Published in: Bulletin of Engineering Geology and the Environment 11/2021

11-10-2021 | Original Paper

Influence of rock powder on the behaviour of an organic soil

Authors: Ali Firat Cabalar, Salama Omar Alosman

Published in: Bulletin of Engineering Geology and the Environment | Issue 11/2021

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Abstract

This paper aims to present the use of rock powder as an agent to improve the behaviour of organic soil. The rock powder, a waste material, was mixed with the organic soil at different contents, namely 10%, 20%, 35%, and 50% by dry weight of the mixture. Experiments have been conducted in fall cone, compaction, unconfined compression strength, and oedometer testing apparatuses. The influence of 50% rock powder content on the Atterberg limits and undrained shear strength (su) of organic soil was to be decreased of the order of 30% and 80%, respectively. The results have shown a marked effect of rock powder inclusion on compaction tests with a substantial increase in dry unit weight (γ) and a decrease in optimum moisture content (wopt). Although unconfined compressive strength (qu) values have increased slightly with the addition of rock powder, the dramatic decrease observed in energy absorption values indicates that the additive gives the mixture a relatively brittle behaviour. It is also among the observations reached that the waste rock powder inclusion affects consolidation characteristics at varying rates, with a substantial decrease in compression index (cc), swelling index (cs), initial void ratio (eo), and volumetric compressibility (mv), and increase in the coefficient of consolidation (cv) up to about 25%. The results are presented for reducing the environmental impact of rock powder by treating organic soil.

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Metadata
Title
Influence of rock powder on the behaviour of an organic soil
Authors
Ali Firat Cabalar
Salama Omar Alosman
Publication date
11-10-2021
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 11/2021
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-021-02457-2

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