2020
DOI: 10.1155/2020/3685619
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Test on Compaction Reinforcement Effect of Sand

Abstract: In fracture or compaction grouting projects of sand layer, there exist many compacted sand regions on both sides of grout veins or around grout bulbs. It has an important effect on the final reinforcement effect of the sand layer that how much performance of the sand layer is improved after being compacted. Compression modulus, cohesion, and permeability coefficient are selected to be the performance indexes of the compaction reinforcement effect of sand. The relationship between the performance properties of … Show more

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Cited by 5 publications
(5 citation statements)
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“…For the grouted sample under high normal stress in Figure 10C, the density of sand was higher. Cement grout diffused in the form of compacted grouting in the sand (El-Kelesh et al, 2012;Zhang et al, 2020). The diffusion range of grout was reduced for the same grout volume, resulting in a poor improvement effect of grouting on the ultimate shear stress of sand.…”
Section: The Influence Of Grout Volume On the Shear Characteristics O...mentioning
confidence: 99%
“…For the grouted sample under high normal stress in Figure 10C, the density of sand was higher. Cement grout diffused in the form of compacted grouting in the sand (El-Kelesh et al, 2012;Zhang et al, 2020). The diffusion range of grout was reduced for the same grout volume, resulting in a poor improvement effect of grouting on the ultimate shear stress of sand.…”
Section: The Influence Of Grout Volume On the Shear Characteristics O...mentioning
confidence: 99%
“…Após o tratamento de solo os valores de c e φ foram de 50,20 kPa e 33,82°, considerando um aumento de 84% para coesão e 4% para o ângulo de atrito, em relação aos parâmetros antes do tratamento. A variação de mudança da coesão foram encontradas por Zhang et al (2020), avaliando a injeção de argamassas e solos arenosos com 10% de teor de argila, verificando que a coesão em solos arenosos aumenta de 9,4 kPa para 40 kPa, e solos com um teor de argila de 100%, a coesão aumenta de 40 kPa para 150 KPa, demonstrando que a resistência ao cisalhamento de solos moles com presença de areia e argila pode ser melhorada efetivamente pela compactação ocasionada pelas colunas de argamassa. De acordo com Zhang (2020), o aumento da coesão é proporcional ao volume de argamassa injetada.…”
Section: Parâmetros Geotécnicos De Caracterização Dos Solosunclassified
“…When the bearing capacity of the foundation is insufficient to meet the design requirements, the foundation can be treated by compaction and vibration to improve the bearing capacity and reduce the foundation deformation. After the foundation treatment, the compression modulus of sand increases by 2-18 times [17]. Recently, the jet grouting method for soil mainly containing clean sand is used to decrease liquefaction potential by improving the shear strength of the soil and CPT-and SPT-based analyses confirm the effectiveness of jet grouting [18].…”
Section: Introductionmentioning
confidence: 97%