Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil

Consolidation settlement is the volume change behaviour due to dissipation of excess pore water pressure in saturated conditions. However, in a partially saturated condition, suction plays an important role in governing settlement behaviour. Besides, it also influences the shear strength of the soil...

Full description

Bibliographic Details
Published in:IOP Conference Series: Materials Science and Engineering
Main Author: Mohamed Jais I.B.; Md Noor M.J.
Format: Conference paper
Language:English
Published: Institute of Physics Publishing 2019
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067894119&doi=10.1088%2f1757-899X%2f527%2f1%2f012020&partnerID=40&md5=a711f544ba0f57f806b9b2ac8372c23f
id 2-s2.0-85067894119
spelling 2-s2.0-85067894119
Mohamed Jais I.B.; Md Noor M.J.
Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
2019
IOP Conference Series: Materials Science and Engineering
527
1
10.1088/1757-899X/527/1/012020
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067894119&doi=10.1088%2f1757-899X%2f527%2f1%2f012020&partnerID=40&md5=a711f544ba0f57f806b9b2ac8372c23f
Consolidation settlement is the volume change behaviour due to dissipation of excess pore water pressure in saturated conditions. However, in a partially saturated condition, suction plays an important role in governing settlement behaviour. Besides, it also influences the shear strength of the soil by providing additional cohesion (termed apparent cohesion, cs) due to the existence of suction in the shear strength against suction axis. The shear strength decreases as the soil becomes fully saturated i.e. suction is reduced to zero, thence causes the apparent cohesion reduced to zero. Apparently, the shear strength has strong influence on the volume change behaviour. Therefore, a comprehensive review of the effective stress and shear strength interaction was conducted to verify this. The objective of this research is to verify the effective stress and shear strength interaction for both saturated and unsaturated soil conditions and to evaluate the complex settlement behaviour due to inundation at constant net stress, which has puzzled geotechnical practitioners. These conditions are tested and verified using the double wall triaxial test apparatus to determine the unsaturated shear strength of soil, the pressure plate extractor to produce Soil Water Characteristic Curve (SWCC) and modified large Rowe's cell apparatus to simulate the loading and wetting collapses of partially saturated soils. © 2019 IOP Publishing Ltd. All rights reserved.
Institute of Physics Publishing
17578981
English
Conference paper
All Open Access; Bronze Open Access
author Mohamed Jais I.B.; Md Noor M.J.
spellingShingle Mohamed Jais I.B.; Md Noor M.J.
Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
author_facet Mohamed Jais I.B.; Md Noor M.J.
author_sort Mohamed Jais I.B.; Md Noor M.J.
title Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
title_short Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
title_full Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
title_fullStr Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
title_full_unstemmed Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
title_sort Collapse settlement of unsaturated soil from effective stress and shear strength interaction of soil
publishDate 2019
container_title IOP Conference Series: Materials Science and Engineering
container_volume 527
container_issue 1
doi_str_mv 10.1088/1757-899X/527/1/012020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067894119&doi=10.1088%2f1757-899X%2f527%2f1%2f012020&partnerID=40&md5=a711f544ba0f57f806b9b2ac8372c23f
description Consolidation settlement is the volume change behaviour due to dissipation of excess pore water pressure in saturated conditions. However, in a partially saturated condition, suction plays an important role in governing settlement behaviour. Besides, it also influences the shear strength of the soil by providing additional cohesion (termed apparent cohesion, cs) due to the existence of suction in the shear strength against suction axis. The shear strength decreases as the soil becomes fully saturated i.e. suction is reduced to zero, thence causes the apparent cohesion reduced to zero. Apparently, the shear strength has strong influence on the volume change behaviour. Therefore, a comprehensive review of the effective stress and shear strength interaction was conducted to verify this. The objective of this research is to verify the effective stress and shear strength interaction for both saturated and unsaturated soil conditions and to evaluate the complex settlement behaviour due to inundation at constant net stress, which has puzzled geotechnical practitioners. These conditions are tested and verified using the double wall triaxial test apparatus to determine the unsaturated shear strength of soil, the pressure plate extractor to produce Soil Water Characteristic Curve (SWCC) and modified large Rowe's cell apparatus to simulate the loading and wetting collapses of partially saturated soils. © 2019 IOP Publishing Ltd. All rights reserved.
publisher Institute of Physics Publishing
issn 17578981
language English
format Conference paper
accesstype All Open Access; Bronze Open Access
record_format scopus
collection Scopus
_version_ 1809677601150599168