Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil

Existence of these soils, sometimes with high gypsum content, caused difficult problems to the buildings and strategic projects due to dissolution and leaching of gypsum by the action of waterflow through soil mass. In this research, a new technique is adopted to investigate the performance of repl...

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Main Authors: Bushra Sahal. Al-busoda, Rusol Salman
Format: Article
Language:English
Published: University of Baghdad 2023-05-01
Series:Journal of Engineering
Subjects:
Online Access:https://joe.uobaghdad.edu.iq/index.php/main/article/view/2098
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author Bushra Sahal. Al-busoda
Rusol Salman
author_facet Bushra Sahal. Al-busoda
Rusol Salman
author_sort Bushra Sahal. Al-busoda
collection DOAJ
description Existence of these soils, sometimes with high gypsum content, caused difficult problems to the buildings and strategic projects due to dissolution and leaching of gypsum by the action of waterflow through soil mass. In this research, a new technique is adopted to investigate the performance of replacement and geosynthetic reinforcement materials to improve the gypseous soil behavior through experimential set up manufactured loaclally specially for this work. A series of tests were carried out using steel container (600*600*500) mm. A square footing (100*100) mm was placed at the center of the top surface of the bed soil. The results showed that the most effective thickness for the dune sand layer with geotextile at the interface, within the tested range, was found to be almost equal to the width of foundation. Therefore, under this depth, the soil was reinforced with geogrid and geotextile. It can be shown that (Collapse Settlement Reduction Factor) increases to (72%) when using two layers of geogrid and one layer of geotextile under depth of replacement equal to the width of footing. In addition, the results showed that the bearing capacity increases to (1.5-2.0)  time under concentric loads and (2.5-3) under eccentric loads after replacement and reinforcement of gypseous soil
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spelling doaj.art-94fe3f8c479c4098a8be9f9ac4e5eef82023-07-11T18:34:44ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392023-05-0119510.31026/j.eng.2013.05.01Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous SoilBushra Sahal. Al-busodaRusol Salman Existence of these soils, sometimes with high gypsum content, caused difficult problems to the buildings and strategic projects due to dissolution and leaching of gypsum by the action of waterflow through soil mass. In this research, a new technique is adopted to investigate the performance of replacement and geosynthetic reinforcement materials to improve the gypseous soil behavior through experimential set up manufactured loaclally specially for this work. A series of tests were carried out using steel container (600*600*500) mm. A square footing (100*100) mm was placed at the center of the top surface of the bed soil. The results showed that the most effective thickness for the dune sand layer with geotextile at the interface, within the tested range, was found to be almost equal to the width of foundation. Therefore, under this depth, the soil was reinforced with geogrid and geotextile. It can be shown that (Collapse Settlement Reduction Factor) increases to (72%) when using two layers of geogrid and one layer of geotextile under depth of replacement equal to the width of footing. In addition, the results showed that the bearing capacity increases to (1.5-2.0)  time under concentric loads and (2.5-3) under eccentric loads after replacement and reinforcement of gypseous soil https://joe.uobaghdad.edu.iq/index.php/main/article/view/2098Gypseous Soil, Dune Sand, Bearing Capacity, Reinfrocement Materials, Collapse Settlement
spellingShingle Bushra Sahal. Al-busoda
Rusol Salman
Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil
Journal of Engineering
Gypseous Soil, Dune Sand, Bearing Capacity, Reinfrocement Materials, Collapse Settlement
title Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil
title_full Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil
title_fullStr Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil
title_full_unstemmed Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil
title_short Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil
title_sort bearing capacity of shallow footing on compacted filling dune sand over reinforced gypseous soil
topic Gypseous Soil, Dune Sand, Bearing Capacity, Reinfrocement Materials, Collapse Settlement
url https://joe.uobaghdad.edu.iq/index.php/main/article/view/2098
work_keys_str_mv AT bushrasahalalbusoda bearingcapacityofshallowfootingoncompactedfillingdunesandoverreinforcedgypseoussoil
AT rusolsalman bearingcapacityofshallowfootingoncompactedfillingdunesandoverreinforcedgypseoussoil