Kerman collapsible clay amendment by lime, bentonite, and nano silica

This paper presents an experimental study to understand the effects of selected additives on Kerman collapsible soil behavior which is dominated with such clay and is semi-arid province in the south-east of Iran. Collapsible soils, known as problematic soils, are materials with a relatively high por...

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Main Authors: Alireza Firoozfar, Majid Dousti
Format: Article
Language:English
Published: Peter the Great St. Petersburg Polytechnic University 2019-10-01
Series:Инженерно-строительный журнал
Subjects:
Online Access:https://engstroy.spbstu.ru/en/article/2019.90.11/
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spelling doaj-75bb39dda1234511938c0a2927bbd97c2021-02-26T12:07:05ZengPeter the Great St. Petersburg Polytechnic UniversityИнженерно-строительный журнал2071-03052019-10-0190611912910.18720/MCE.90.11Kerman collapsible clay amendment by lime, bentonite, and nano silicaAlireza Firoozfar0Majid Dousti1University of ZanjanUniversity of ZanjanThis paper presents an experimental study to understand the effects of selected additives on Kerman collapsible soil behavior which is dominated with such clay and is semi-arid province in the south-east of Iran. Collapsible soils, known as problematic soils, are materials with a relatively high porosity and demonstrate a potential for sudden and large decrease in their volume under water content changes with or without change in the applied stress level. In this study, soil samples are obtained from a project site in Kerman city and the collapse potential tests were performed on the prepared samples in accordance with ASTM as double oedometer consolidation test. Initially, the undisturbed level of collapsibility. Next, samples are treated with three kinds of additives namely: lime and bentonite in the 3, 5 and 8 percent and nano silica in 0.4, 0.7 and 1 percent of dry soil weight. For each percentage of additive, one sample was created and the results demonstrated that 5 % of Lime, 3 % of Bentonite and 1 % of nano silica are the optimum percentage of additives for decreasing the collapsibility. The collapsibility of Kerman clay is reduced significantly after treating with lime and nano silica in comparison to bentonite.https://engstroy.spbstu.ru/en/article/2019.90.11/collapsible soillimenano silicabentonitetreatment
collection DOAJ
language English
format Article
sources DOAJ
author Alireza Firoozfar
Majid Dousti
spellingShingle Alireza Firoozfar
Majid Dousti
Kerman collapsible clay amendment by lime, bentonite, and nano silica
Инженерно-строительный журнал
collapsible soil
lime
nano silica
bentonite
treatment
author_facet Alireza Firoozfar
Majid Dousti
author_sort Alireza Firoozfar
title Kerman collapsible clay amendment by lime, bentonite, and nano silica
title_short Kerman collapsible clay amendment by lime, bentonite, and nano silica
title_full Kerman collapsible clay amendment by lime, bentonite, and nano silica
title_fullStr Kerman collapsible clay amendment by lime, bentonite, and nano silica
title_full_unstemmed Kerman collapsible clay amendment by lime, bentonite, and nano silica
title_sort kerman collapsible clay amendment by lime, bentonite, and nano silica
publisher Peter the Great St. Petersburg Polytechnic University
series Инженерно-строительный журнал
issn 2071-0305
publishDate 2019-10-01
description This paper presents an experimental study to understand the effects of selected additives on Kerman collapsible soil behavior which is dominated with such clay and is semi-arid province in the south-east of Iran. Collapsible soils, known as problematic soils, are materials with a relatively high porosity and demonstrate a potential for sudden and large decrease in their volume under water content changes with or without change in the applied stress level. In this study, soil samples are obtained from a project site in Kerman city and the collapse potential tests were performed on the prepared samples in accordance with ASTM as double oedometer consolidation test. Initially, the undisturbed level of collapsibility. Next, samples are treated with three kinds of additives namely: lime and bentonite in the 3, 5 and 8 percent and nano silica in 0.4, 0.7 and 1 percent of dry soil weight. For each percentage of additive, one sample was created and the results demonstrated that 5 % of Lime, 3 % of Bentonite and 1 % of nano silica are the optimum percentage of additives for decreasing the collapsibility. The collapsibility of Kerman clay is reduced significantly after treating with lime and nano silica in comparison to bentonite.
topic collapsible soil
lime
nano silica
bentonite
treatment
url https://engstroy.spbstu.ru/en/article/2019.90.11/
work_keys_str_mv AT alirezafiroozfar kermancollapsibleclayamendmentbylimebentoniteandnanosilica
AT majiddousti kermancollapsibleclayamendmentbylimebentoniteandnanosilica
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