Leaching Effects on Properties of Cemented Sands in Kuwait

Ismael, Nabil F.; Mollah, M. A.

doi:10.1061/(asce)1090-0241(1998)124:10(997)

Cited by 33 publications

(17 citation statements)

References 5 publications

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“…These layers, which concentrate in north and south Kuwait, are known as sabkha soils. The soils are marked by high concentrations of cementing agents, including gypsum, carbonates and chlorides (Al-Amoudi, 1994;Ismael and Mollah, 1998). In addition, sabkha soils are known for their low-bearing strength (Al-Amoudi, 2002;Al-Shamrani and Dhowian, 1997), high susceptibility to collapse (Al-Amoudi and Abduljauwad, 1995) and high volume changes (Ismael, 1993).…”

Section: Introductionmentioning

confidence: 99%

Influence of Bitumen Addition on Sabkha Soil Shear Strength Characteristics under Dry and Soaked Conditions

Al-Otaibi¹,

Aldaihani²

2018

American Journal of Engineering and Applied Sciences

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High salt content in sabkha soils means they are significantly affected by changes in water content. Dissolution of salts within sabkha soil mass decreases their shear strength upon inundation with water, resulting from the destruction of cementation bonds between soil particles. Therefore, successful improvement for these soils must be based on reducing the dissolution of sabkha salts to minimize their unfavorable properties. This paper investigated the effect of bitumen addition as a stabilizing waterproofing agent on the shear strength properties of sabkha soil. 0%, 4%, 8% and 10% bitumen and sabkha soil were mixed thoroughly. The experimental program on the bitumenmixed sabkha soils included physical and chemical soil characterization, modified compaction tests and direct shear strength tests. The results showed that bitumen addition modified the physical properties by up to 8%. Under dry conditions, the ultimate shear strength and the horizontal shear displacement increased with bitumen addition. Under soaked conditions, the improvement in shear strength properties was pronounced. The shear strength parameters for the natural sabkha soil fell upon soaking, while the bitumen-mixed sabkha soil samples maintained their integrity. The adsorbed bitumen layer on the cemented soil lumps acted as a waterproofing agent that reduced salt dissolution and alternatively, the shear strength.

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Section: Introductionmentioning

confidence: 99%

Influence of Bitumen Addition on Sabkha Soil Shear Strength Characteristics under Dry and Soaked Conditions

Al-Otaibi¹,

Aldaihani²

2018

American Journal of Engineering and Applied Sciences

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“…Sabkhas are coastal flat areas that extend above the high tide level and consist of evaporate-rich sediments. These salt-bearing soils can be leached, resulting in a reduction in strength, penetration resistance and bearing capacity, and an increase in permeability, void ratio and compressibility [21].…”

Section: Geologymentioning

confidence: 99%

A review of geological and geotechnical features of some Middle Eastern countries

Poulos

2018

Innov. Infrastruct. Solut.

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This paper presents a collection of some of the available published information on geological and geotechnical characteristics of some Middle Eastern countries within the Arabian Peninsula. For each of the countries considered, a brief summary is given of the geological history, typical geotechnical profiles and typical geotechnical parameters, and if available, information on foundation design parameters. Such information may be helpful for preliminary design purposes, prior to a more detailed program of ground investigation being undertaken.

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“…According to Ismael and Mollah (1998), tap water is more convenient to use in leaching of gypsiferous soil samples and it is similar to ground water in the field.…”

Section: Soaking Watermentioning

confidence: 99%

Improving fine-grained gypsiferous soil by increased compaction

Razouki

Kuttah

Al-Damluji³

et al. 2012

International Journal of Pavement Engineering

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Presented in this paper is a study of the effect of compactive effort (CE) and long-term soaking on the strength characteristics of a clayey gypsiferous subgrade soil. The tested soil is A-6 (6) soil according to American Association of State Highway and Transportation Officials (AASHTO) soil classification system. To study the effect of CE and long term soaking on the properties of the tested soil, various California bearing ratio soil samples were prepared and compacted at optimum moisture content of the modified AASHTO compaction, but using four different chosen CEs of 12, 25, 56 and 70 blows/layer and then soaked for 0, 4, 7, 15, 30 and 120 days. The California bearing ratio (CBR) tests indicate that the CBR increases significantly in a nonlinear manner with increasing CE for all soaking periods, indicating improvement in soil strength with increased compaction. The rate of increase dies out with increasing CE. The CBR tests reveal also that there is a serious drop in the CBR due to soaking for all CEs.

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Leaching Effects on Properties of Cemented Sands in Kuwait

Cited by 33 publications

References 5 publications

Influence of Bitumen Addition on Sabkha Soil Shear Strength Characteristics under Dry and Soaked Conditions

Influence of Bitumen Addition on Sabkha Soil Shear Strength Characteristics under Dry and Soaked Conditions

A review of geological and geotechnical features of some Middle Eastern countries

Improving fine-grained gypsiferous soil by increased compaction

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