An experimental study on the cyclic settlement of sand and cemented sand under different inclinations of the bedding angle and loading amplitudes

Al-Rkaby, Alaa H. J.; Chegenizadeh, Amin; Nikraz, Hamid

doi:10.1080/19648189.2017.1327891

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…In contrast to the OPC and lime, clayey soil, improved with alkaline activated low calcium fly ash, exhibited a slow increase in the unconfined compressive strength UCS until the 28th day, and then it showed similar or larger UCS than the conventional stabilizers [7]. A similar trend has been found by Al-Rkaby et al [8][9][10][11].…”

Section: Introductionsupporting

confidence: 74%

Evaluating Shear Strength of Sand- GGBFS Based Geopolymer Composite Material

Al-Rkaby¹

2019

Acta Polytech

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Geopolymer has been emerging as a novel and sustainable replacement for the traditional soil improvement materials, such as ordinary Portland cement OPC and lime, which have severe environmental impacts. In this paper, a series of unconfined compression and triaxial tests were conducted on sand and sand - ground granulated blast-furnace slag (GGBFS) based geopolymer. A solution of sodium silicate and sodium hydroxide was employed for the geopolymerization process. Results revealed that adding the GGBFS resulted in a significant increase in the strength properties. This result indicates that geopolymer acted as a cementation agent, providing better bonding between the sand particles and consequently improving the performance of the treated sand.

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Section: Introductionsupporting

confidence: 74%

Evaluating Shear Strength of Sand- GGBFS Based Geopolymer Composite Material

Al-Rkaby¹

2019

Acta Polytech

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“…The influence of sample preparation methods on the mechanical properties of soil samples is one of the current research focuses [1,2]. In the study of sandy soil, Park [3] explored the evolution trends of the initial structure of "ASTM graded sand" and the internal structure in the shear process by the sand rain method (AP) and wet packing and tamping method (MT).…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence Mechanism of Sample Preparation Method on the Shear Strength of Silty Soil

Qian²,

Xuan

et al. 2023

Sustainability

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During the compaction of silty soil subgrade, different filling methods are adopted, which will significantly impact the subgrade performance, but few studies have been applied to quantify this influence. To explore the influence mechanism of dry density and sample preparation method (compaction and static compression method) on the shear strength of silty soil, the consolidated undrained shear test (CU test), dynamic triaxial test, and nuclear magnetic resonance microscopic test on silty soil were carried out in this study. The test results show that the shear strength of the sample is positively correlated with the dry density. The influence of the sample preparation method on shear strength is mainly reflected in the cohesion. The pore size distributions obtained by different sample preparation methods had smaller differences before the CU test. However, significant differences were observed after the CU test, indicating that the influence of the sample preparation method on the shear strength of the sample is not on the initial pore distribution but on the residual stress and overall uniformity. The dynamic triaxial tests show that a differential settlement may occur when multiple sample preparation (soil-filling method in subgrade practice) methods are adopted.

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