Cover Image

Moisture-dependent resilient modulus of chemically treated subgrade soil

Traffic loads induce cyclic loading under influence of environmental factors, and is affected by the variation of moisture content and suction (s). These parameters are difficult to quantify, and the methods for determination are cumbersome. This paper presents extensive experimental studies used to...

Full description

Saved in:
Bibliographic Details
Main Authors: Nurmunira, Muhammad, Siddiqua, Sumi
Format: Article
Language:English
English
Published: Elsevier 2021
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/38084/1/Moisture-dependent%20resilient%20modulus%20of%20chemically.pdf
http://umpir.ump.edu.my/id/eprint/38084/2/Moisture-dependent%20resilient%20modulus.pdf
http://umpir.ump.edu.my/id/eprint/38084/
https://doi.org/10.1016/j.enggeo.2021.106028
https://doi.org/10.1016/j.enggeo.2021.106028
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.ump.umpir.38084
record_format eprints
spelling my.ump.umpir.380842023-07-27T06:59:09Z http://umpir.ump.edu.my/id/eprint/38084/ Moisture-dependent resilient modulus of chemically treated subgrade soil Nurmunira, Muhammad Siddiqua, Sumi TA Engineering (General). Civil engineering (General) Traffic loads induce cyclic loading under influence of environmental factors, and is affected by the variation of moisture content and suction (s). These parameters are difficult to quantify, and the methods for determination are cumbersome. This paper presents extensive experimental studies used to obtain the resilient modulus-suction (MR-s) relationship of the treated subgrade soil. An optimum design of bentonite‑magnesium-alkalinization (BMA) was used an additive. The cyclic Triaxial frame with ELDYN system was employed to measure MR values and the suction was estimated using the filter paper test. A bimodal soil water characteristic curve (SWCC) was observed for treated soil with unheated BMA additive and pre-treatment at heated (BMAH) conditions due to the presence of cementitious products. The MR-s relationship was also developed for the stabilized soil using a normalized model. Results showed that the BMAH samples had a significant level of improvement of MR at higher suction levels as compared to BMA samples but this behaviour of BMAH didn’t sustain under fully saturated condition. The change in moisture contents under seasonal variation affects the subgrade performance. This study shows the soil additive can effectively improve the mechanical properties of the soil under various moisture contents. The MR for the treated soil can be estimated using the normalized model under the worst-case scenario of a subgrade when the soil is at a fully saturated condition. Elsevier 2021-05 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/38084/1/Moisture-dependent%20resilient%20modulus%20of%20chemically.pdf pdf en http://umpir.ump.edu.my/id/eprint/38084/2/Moisture-dependent%20resilient%20modulus.pdf Nurmunira, Muhammad and Siddiqua, Sumi (2021) Moisture-dependent resilient modulus of chemically treated subgrade soil. Engineering Geology, 285 (106028). pp. 1-13. ISSN 0013-7952. (Published) https://doi.org/10.1016/j.enggeo.2021.106028 https://doi.org/10.1016/j.enggeo.2021.106028
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Nurmunira, Muhammad
Siddiqua, Sumi
Moisture-dependent resilient modulus of chemically treated subgrade soil
description Traffic loads induce cyclic loading under influence of environmental factors, and is affected by the variation of moisture content and suction (s). These parameters are difficult to quantify, and the methods for determination are cumbersome. This paper presents extensive experimental studies used to obtain the resilient modulus-suction (MR-s) relationship of the treated subgrade soil. An optimum design of bentonite‑magnesium-alkalinization (BMA) was used an additive. The cyclic Triaxial frame with ELDYN system was employed to measure MR values and the suction was estimated using the filter paper test. A bimodal soil water characteristic curve (SWCC) was observed for treated soil with unheated BMA additive and pre-treatment at heated (BMAH) conditions due to the presence of cementitious products. The MR-s relationship was also developed for the stabilized soil using a normalized model. Results showed that the BMAH samples had a significant level of improvement of MR at higher suction levels as compared to BMA samples but this behaviour of BMAH didn’t sustain under fully saturated condition. The change in moisture contents under seasonal variation affects the subgrade performance. This study shows the soil additive can effectively improve the mechanical properties of the soil under various moisture contents. The MR for the treated soil can be estimated using the normalized model under the worst-case scenario of a subgrade when the soil is at a fully saturated condition.
format Article
author Nurmunira, Muhammad
Siddiqua, Sumi
author_facet Nurmunira, Muhammad
Siddiqua, Sumi
author_sort Nurmunira, Muhammad
title Moisture-dependent resilient modulus of chemically treated subgrade soil
title_short Moisture-dependent resilient modulus of chemically treated subgrade soil
title_full Moisture-dependent resilient modulus of chemically treated subgrade soil
title_fullStr Moisture-dependent resilient modulus of chemically treated subgrade soil
title_full_unstemmed Moisture-dependent resilient modulus of chemically treated subgrade soil
title_sort moisture-dependent resilient modulus of chemically treated subgrade soil
publisher Elsevier
publishDate 2021
url http://umpir.ump.edu.my/id/eprint/38084/1/Moisture-dependent%20resilient%20modulus%20of%20chemically.pdf
http://umpir.ump.edu.my/id/eprint/38084/2/Moisture-dependent%20resilient%20modulus.pdf
http://umpir.ump.edu.my/id/eprint/38084/
https://doi.org/10.1016/j.enggeo.2021.106028
https://doi.org/10.1016/j.enggeo.2021.106028
_version_ 1772811355748827136
score 13.211869

Similar Items