Field practice and ground settlement behaviors of a land creation case in loess area of China

Yonghui, Liang; Shui, Wei-Hou; Lu, Shi-Feng

doi:10.1007/s10064-022-02964-w

Cited by 14 publications

(2 citation statements)

References 45 publications

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“…As a typical structural soil, the deformation behavior of loess is significantly influenced by water content. During rainfall infiltration or groundwater fluctuation, compacted loess is subjected to wetting along the depth, leading to settlement and cracking of engineering structures [6,7]. Therefore, it is significant to study the water retention and deformation behavior of compacted loess for addressing engineering issues in loess regions.…”

Section: Introductionmentioning

confidence: 99%

Effects of Compaction Water Content on Water Retention and Deformation Behavior of Compacted Loess

Di,

Zhang,

Zhou

et al. 2024

Advances in Civil Engineering

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Compacted loess is widely used as a construction material in engineering practices. The compaction dry density and compaction water content have significant effects on the hydromechanical behavior of compacted loess, thereby influencing the serviceability and safety of engineering structures. The former was widely studied in previous studies, while the latter is rarely known. In this study, the water retention, compression, and collapse behavior of compacted loess at different compaction water contents are investigated through pressure plate and oedometer tests. Microstructure analysis was carried out for insight analysis of the test results. The air entry value and yield stress of compacted loess decreased by 64% and 50%, respectively, with the compaction water content increasing from 12.4% to 19.0%. This is due to the fact that the number of clods increases with increasing the compaction water content, leading to many large-sized pores (i.e., diameter > 1,000 μm) and weaker soil skeletons. The influence of compaction water content on the water retention and compression behavior of loess is more pronounced at lower compaction dry densities and lower testing water contents, respectively. In addition, the specimen shows smaller collapse indexes at higher compaction water contents, mainly because of the larger deformation induced by the initial compression.

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Section: Introductionmentioning

confidence: 99%

Effects of Compaction Water Content on Water Retention and Deformation Behavior of Compacted Loess

Di,

Zhang,

Zhou

et al. 2024

Advances in Civil Engineering

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“…This application is particularly prevalent in mountainous areas, where high-filled sites are often implemented to achieve desired and level surfaces in construction projects such as highways, airports and refinery plants [1][2][3]. However, the use of loose and low-bearing-capacity high-filled soil can potentially jeopardize the stability and safety of a building's foundation [4,5]. The primary cause of this issue is the utilization of non-engineered fillings, such as excavated soils in construction areas (e.g., tunneling works, road construction cuts and hill cuts), which are typically employed for cost efficiency and environmental protection reasons [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive In Situ Investigation on the Reinforcement of High-Filled Red Soil Using the Dynamic Compaction Method

Wang

Yonghui

et al. 2023

Sustainability

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High-filled red soil typically lacks sufficient bearing capacity, which can pose significant challenges when constructing building foundations. One economical and effective method for the reinforcement of high-filled red soil is the dynamic compaction (DC) method. However, the design parameters for reinforcing high-filled red soil using the DC method are largely based on experience, which indicates the significant value of field results of related engineering practice. In this paper, we report a field study that was carried out to investigate the effect of impact energy on the treatment of super-high-filled ground with red soil in southwestern Yunnan, China, where three pilot DC tests were designed and conducted with three different impact energies (4000 kN·m, 8000 kN·m and 15,000 kN·m). To evaluate the reinforcement effect and optimize the DC operational parameters, a series of in situ tests, including settlement monitoring, standard penetration tests, dynamic penetration tests, surface wave velocity tests and plate-load tests, were carried out. Furthermore, the improvement depth of DC was discussed. The results of the field study show that the characteristic value of the ground bearing capacity of the three test zones could reach 250 kPa, which coincides with the design requirement, although the improvement depth of testing zone III fails to reach the required depth. This study helps to improve the in situ recycling of high-filled soil, thereby promoting the sustainable development of engineering construction.

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Practice of High-Filled Foundation in Construction of the Underground Space in Urumqi International Airport

Yong-hui,

Wei-dong,

Wei

et al. 2024

Lecture Notes in Civil Engineering

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Field practice and ground settlement behaviors of a land creation case in loess area of China

Cited by 14 publications

References 45 publications

Effects of Compaction Water Content on Water Retention and Deformation Behavior of Compacted Loess

Effects of Compaction Water Content on Water Retention and Deformation Behavior of Compacted Loess

A Comprehensive In Situ Investigation on the Reinforcement of High-Filled Red Soil Using the Dynamic Compaction Method

Practice of High-Filled Foundation in Construction of the Underground Space in Urumqi International Airport

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