Journal of Engineering and Applied Sciences
ISSN: Online 1818-7803ISSN: Print 1816-949x
Abstract
The soils with gypsum salts content are caused great engineering problems especially with the strategic projects. These problems were observed in Iraq country during the construction of some large structures. The exposure of the gypseous soil to the water over time causes the change of properties and collapse under the impact of loads on the soil. The leaching of gypsum increases the collapsibility potential and causes serious damages to structures that are constructed on these soils. The present research investigates the collapsibility of gypseous soil due to immerse and flow of water (soaking and leaching) through special model tests that were designed and manufactured for this purpose. The coefficient of permeability has been measured also for samples at density equal to 90% from max. dry density. Moreover, dissolution of gypsum is observed by measuring the Total Dissolved Salts (TDS) during leaching process. Gypseous soil with gypsum content 65, 45 % brought from Tikrit city, which is located almost in central of Iraq and take the samples. The results exhibit that increasing of gypsum content led to increasing in collapse potential with percentage of 25% approximately. Also, the result shown that increased of the stress from 25‐50 Mpa caused a decrease hydraulic conductivity of gypseous soil and investigated that the behaviour of settlement increase with time sucking and leaching.
How to cite this article:
Qasim A. Aljanabi. Behaviour of Sandy Gypseous Soil Under Dynamic Load.
DOI: https://doi.org/10.36478/10.36478/makjeas.2019.9923.9927
URL: https://www.makhillpublications.co/view-article/1816-949x/10.36478/makjeas.2019.9923.9927