Research on Construction Quality Monitoring and Evaluating Technology of Soil-Cement Mixing Piles

Wan, Yu; Song, Lei; Zhu, Zhiduo; Peng, Yuyi

doi:10.1007/s11204-021-09710-6

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…By evaluating the possibility of using existing numerical models of mortar and concrete machinery on wood-based cementitious composites, Ndong Engone et al [16] identified the parameters that have to be adjusted in the models. In foreign countries, some new technologies have emerged, such as adding modifiers to enhance solidification effects and utilizing detection systems for construction monitoring [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Research on Temperature Field of Cement-Mixing Pile-Reinforced Soft Soil Foundation

Wang,

Xu,

et al. 2024

Buildings

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To investigate the mechanism of reinforcing soft soil with cement-mixing pile, based on ABAQUS secondary development, a numerical simulation study of the hydration reaction of cement-mixing piles was conducted. In this study, the influence of ground temperature variations on the distribution patterns of the temperature field in and around the pile was also considered. The temperature field of the pile–soil model can be primarily divided into two stages: the temperature rise stage (0~5 d) and the temperature decrease stage (5~90 d). The following observations were made: (1) The temperature of the pile body rapidly increased within the first 5 days, dissipating heat to the surrounding soil, leading to an elevation of the temperature in the soil around the pile and a decrease in soil moisture content. Around the 5th day, the temperature reached its maximum value, and the heat release rate of the pile body was higher than that of the surrounding soil. (2) With a 15% cement admixture, under the influence of 425# cement hydration, the temperature inside the pile increased by 5 °C, and the temperature in the soil around the pile increased by 4.2 °C. After considering the ground temperature, the temperature in the soil around the pile increased by 4.6 °C. (3) The maximum temperature generated during the hydration of 425# Portland cement is higher than that of 525#; the temperature of the soil around piles made with 425# cement is consistently higher than that made with 525#. (4) The hydration temperature of piles with a 10% cement admixture increased by 4.4 °C; for piles with a 15% cement admixture, the hydration temperature increased by 6.6 °C; and for piles with a 20% cement admixture, the hydration temperature increased by 9.1 °C. The temperature field of this structure gradually stabilizes after 7 days with increasing time and cement admixture. The results indicate that the hydration of cement-mixing piles raises the temperature of the soil around the piles. Additionally, the temperature resulting from the hydration of cement-mixing pile increases with the addition of cement.

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Section: Introductionmentioning

confidence: 99%

Research on Temperature Field of Cement-Mixing Pile-Reinforced Soft Soil Foundation

Wang,

Xu,

et al. 2024

Buildings

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“…Therefore, the proposed pretreatment is required for engineering construction in the coastal soft soil area of South China. Various foundation treatment methods have been used for soft soils, among which cement mixing piles have been intensively studied [4][5][6] and widely used [7][8][9] because of their good reinforcement effect and simple construction. Engineering practice has found that the strength of cement mixing piles in South China's organic-rich coastal soft soil region is very low, although the cement content is high.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Strength and Dry–Wet Cycle Characteristics of South China Coastal Soft Soil Solidified by Cement Collaborating Sand Particles

Liang,

Wang,

Feng

2023

Applied Sciences

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To study the influence of sand particles on the strength and dry–wet cycle characteristics of cement-solidified South China coastal soft clay, a series of cement-solidified South China coastal soft clay samples with different contents and sizes of sand particles were prepared, and unconfined compression strength (UCS) tests, dry–wet cycle tests under seawater and freshwater conditions, scanning electron microscopy tests, and X-ray diffraction tests were carried out. The test results show that the UCS of cement–sand-solidified soil (CS-SS) samples at 7, 14 and 28 d increase as sand particle content increases, and their 28 d strength increase as sand particle size decreases; the average mass loss rate of sand–cement samples ranges from 14% to 61%. The properties of strength and dry–wet cycle durability improve as the sand particle content increases and the sand particle size decreases. Moreover, the anti-dry–wet cycle ability of samples under freshwater conditions is better than those under seawater conditions. The scanning electron microscopy (SEM), X-ray diffraction (XRD), and ion chromatography test results show that the stiffness replacement effect (the high stiffness of sand particles replaces the low stiffness of soft clay), the interface cementation effect between the sand particles and cemented soil, and the microcrack expansion-obstructing effects of sand particles contribute to the improvement of the strength and dry–wet cycle durability of cement–sand solidified South China coastal soft clay.

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Bearing Characteristics and Simplified Calculation of a Reamed Precast Concrete Pile with Prebored Grouting

Zhang,

Wang,

Liu

et al. 2023

Int J Civ Eng

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Research on Construction Quality Monitoring and Evaluating Technology of Soil-Cement Mixing Piles

Cited by 5 publications

References 1 publication

Research on Temperature Field of Cement-Mixing Pile-Reinforced Soft Soil Foundation

Research on Temperature Field of Cement-Mixing Pile-Reinforced Soft Soil Foundation

Experimental Study on Strength and Dry–Wet Cycle Characteristics of South China Coastal Soft Soil Solidified by Cement Collaborating Sand Particles

Bearing Characteristics and Simplified Calculation of a Reamed Precast Concrete Pile with Prebored Grouting

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