Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction

Numerous low- to medium volume roads constructed on gypseous soils, especially in the west and north parts in Iraq such as Al-Anbar & Salah-Al-din, encounter severe pavement cracking and premature loss of serviceability. The roads built on problematic Gypsum soils often become distressed due t...

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Main Author: Ali J. Kadhim
Format: Article
Language:Arabic
Published: Mustansiriyah University/College of Engineering 2014-01-01
Series:Journal of Engineering and Sustainable Development
Subjects:
Online Access:https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/842
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author Ali J. Kadhim
author_facet Ali J. Kadhim
author_sort Ali J. Kadhim
collection DOAJ
description Numerous low- to medium volume roads constructed on gypseous soils, especially in the west and north parts in Iraq such as Al-Anbar & Salah-Al-din, encounter severe pavement cracking and premature loss of serviceability. The roads built on problematic Gypsum soils often become distressed due to volume changes associated with seasonal moisture content fluctuations. The objective of this paper is to study the effect of cut-back asphalt (MC-30) on the geotechnical properties of gypseous soil as stabilizing agent and investigate the ability of construct the road on this type of soil and obtain some mathematical models using SPSS program. The soil used in this study has been brought from Tikrit City at Salah-Al-din Governorate in Iraq with (34%) average gypsum content and classified as (SP) according to (USCS). A series of laboratory tests included physical, chemical, shear strength, collapsibility and stability tests are conducted on both untreated and treated soil samples with cut-back asphalt. Compacted soil samples with specification are prepared and five different percentage of cut-back asphalt are added to the soil samples and named as a binder content as (2, 4, 6, 8, and10) % and then tested. The results showed that using cut-back asphalt represents good solution and suitable alternative to improve the properties of gypseous soils by elimination the dissolving of gypsum when become in touch with water as well as increase in strength .....  
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spelling doaj.art-0bd2d161ff634637b8854ce99994b77e2022-12-22T04:11:36ZaraMustansiriyah University/College of EngineeringJournal of Engineering and Sustainable Development2520-09172520-09252014-01-01181Stabilization of Gypseous Soil by Cutback Asphalt for Roads ConstructionAli J. Kadhim0Transportation and Highway Engineering Department, Al-Mustansiriyah University, Baghdad, Iraq Numerous low- to medium volume roads constructed on gypseous soils, especially in the west and north parts in Iraq such as Al-Anbar & Salah-Al-din, encounter severe pavement cracking and premature loss of serviceability. The roads built on problematic Gypsum soils often become distressed due to volume changes associated with seasonal moisture content fluctuations. The objective of this paper is to study the effect of cut-back asphalt (MC-30) on the geotechnical properties of gypseous soil as stabilizing agent and investigate the ability of construct the road on this type of soil and obtain some mathematical models using SPSS program. The soil used in this study has been brought from Tikrit City at Salah-Al-din Governorate in Iraq with (34%) average gypsum content and classified as (SP) according to (USCS). A series of laboratory tests included physical, chemical, shear strength, collapsibility and stability tests are conducted on both untreated and treated soil samples with cut-back asphalt. Compacted soil samples with specification are prepared and five different percentage of cut-back asphalt are added to the soil samples and named as a binder content as (2, 4, 6, 8, and10) % and then tested. The results showed that using cut-back asphalt represents good solution and suitable alternative to improve the properties of gypseous soils by elimination the dissolving of gypsum when become in touch with water as well as increase in strength .....  https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/842Binder ContentBitumenCut-back asphaltEngineering propertiesGypsum
spellingShingle Ali J. Kadhim
Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction
Journal of Engineering and Sustainable Development
Binder Content
Bitumen
Cut-back asphalt
Engineering properties
Gypsum
title Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction
title_full Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction
title_fullStr Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction
title_full_unstemmed Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction
title_short Stabilization of Gypseous Soil by Cutback Asphalt for Roads Construction
title_sort stabilization of gypseous soil by cutback asphalt for roads construction
topic Binder Content
Bitumen
Cut-back asphalt
Engineering properties
Gypsum
url https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/842
work_keys_str_mv AT alijkadhim stabilizationofgypseoussoilbycutbackasphaltforroadsconstruction