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| Study on The Diffusion Mechanism of Grouting Slurry After Grouting Pile Foundation |
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Received:October 16, 2023
Revised:October 20, 2023
Accepted:October 24, 2023
Published Online:March 24, 2025
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| DOI： |
| KeyWord:post grouting; pile foundation; grout; diffusion range; cracks |
| Author | Institution |
| yixiaoli |
China Railway First Group Building & Installation Engineering Co.,LTD |
| wangzhenjun |
Shandong Provincial Institute of Transportation Sciences |
| houxiangyang |
China Railway First Group Building & Installation Engineering Co.,LTD |
| huibing |
Shandong Provincial Institute of Transportation Sciences |
| sunwei |
China Railway First Group Building & Installation Engineering Co.,LTD |
| zhangxu |
Shandong Provincial Institute of Transportation Sciences |
| miaoxin |
Shandong Provincial Institute of Transportation Sciences |
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| Abstract: |
| Split grouting is the most commonly used grouting method. The grouting process parameters directly affect the grout diffusion range. Studying the grout diffusion characteristics has guiding significance for determining on-site construction parameters. Based on a grouting pile site, a flat crack grout diffusion model was established to study the influence of different factors on the maximum diffusion radius of grouting behind the pile foundation. The results show that the increase in grouting pressure causes the maximum diffusion radius of the grout to increase first and then level off, and the optimal grouting pressure is 4 MPa. As the grouting volume increases, the maximum diffusion radius of the grout first increases and then levels off. The increase in cement slurry viscosity leads to a decrease in the maximum diffusion radius of the slurry. When designing the cement slurry, technicians should introduce the influence of the slurry viscosity on the maximum diffusion radius based on the mechanical properties. The maximum diffusion radius of slurry first increases and then decreases with the increase of crack height. When the crack height is 25 cm, it is beneficial to improve the bearing capacity of cast-in-place piles, and the crack width has little impact on the maximum diffusion radius. |
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