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Механика грунтов

An experimental study to mitigate swelling pressure of expansive Tabuk shale, Saudi Arabia

Авторы
ЭМБАБИ А.А.Кафедра геологии факультета естественных наук Университета Дамиетты, г. Дамиетта (Думъят), Египет
АБУ ХАЛАВА А.Управление по ядерным материалам, г. Каир, Египет
РАМАДАН М.Кафедра геологии факультета естественных наук Университета Дамиетты, г. Дамиетта (Думъят), Египет

Abstract: We present to the attention of the readers a slightly abridged and adapted translation of the paper “An experimental study to mitigate swelling pressure of expansive Tabuk shale, Saudi Arabia” by Egyptian engineering geologists (Embaby et al., 2017). This paper was published by the WASET publishing house in the International Journal of Geological and Environmental Engineering. It is an open access article under the CC BY SA 3.0 license that allows it to be distributed, modified, refined, translated, adapted, and supplemented, provided that the types of changes are noted, the original source and license are referred to. In our case, the full reference to the original paper (Embaby et al., 2017) for the presented translation is given in the end. In the Kingdom of Saudi Arabia, there are several areas where expansive soil exists in the form of variable-thicknesses layers in the developed regions. Severe distress to infrastructures can be caused by the development of heave and swelling pressure in this kind of expansive shale. Among the various techniques for expansive soil mitigation, the removal and replacement technique is very popular for lightly loaded structures and shallow foundations. This paper presents the result of an experimental study conducted for evaluating the effect of the type and thickness of the cushion soils on the mitigation of swelling characteristics of the expanded shale. Seven undisturbed shale samples collected from the Al Qadsiyah district, which is located in the Tabuk town in the north of the Kingdom of Saudi Arabia, were treated with two types of cushions of coarse-grained sediments (CCS) (sand and gravel). The both types had thicknesses of 22, 33 and 44% in relation to the initial height of the sample (which would be in relation to the depth of the active zone of the shale from its top in the field conditions). The test results indicated that the replacement of the expansive shale by CCS reduced the swelling potential and swelling pressure. It was found that the reduction in the swelling depended on the type and thickness of CCS. The treatment by removing the original expansive shale and replacing it by a sand cushion, which was 44% thick, reduced the swelling potential and pressure. The values of the reduction were about 53.29 and 62.78 %, respectively.

 

Keywords: cushion of sand/gravel; expansive soil; Saudi Arabia; swelling pressure; Tabuk Shale

DOI: https://doi.org/10.58339/2949-0677-2024-6-1/2-36-46

 

For citation: Embaby A.A., Abu Halawa A., Ramadan M. Eksperimenty po snizheniyu davleniya nabuhaniya slantsev goroda Tabuk (Saudovskaya Araviya) [An experimental study to mitigate swelling pressure of expansive Tabuk shale, Saudi Arabia] (translated from English into Russian) // Geoinfo. 2024. Vol. 6. № 1/2. S. 36–46 DOI:10.58339/2949-0677-2024-6-1/2-36-46 (in Rus.).
 

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Article in RSCI: https://www.elibrary.ru/item.asp?id=71171269