|Table of Contents|

Application Experiment of Construction Waste Recycled Lime Soil Compaction Pile(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年05期
Page:
234-240
Research Field:
基础工程
Publishing date:

Info

Title:
Application Experiment of Construction Waste Recycled Lime Soil Compaction Pile
Author(s):
WANG Hai-ying1;  WANG Xi-chuan1;  ZHANG Ying-zhi2;  He Jia2
(1. School of Construction Machinery, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Shaanxi Transportation Holding Group Co., Ltd., Xi'an 710036, Shaanxi, China)
Keywords:
construction waste recycled material;  collapsible loess ground;  compaction pile;  pile experiment;  bearing capacity
PACS:
TU444
DOI:
10.19815/j.jace.2022.04093
Abstract:
In order to master the application performance of construction waste recycled materials in the treatment of collapsible loess foundation with lime soil compaction piles, through the material mechanical performance test, the filling material of the lime soil compaction pile with the particle size of 0-30 mm and the ratio of construction waste to lime soil of 72:28 was determined firstly. Then, four groups of application tests of test piles with different distance to diameter ratios were completed, and the application performance parameters and characteristics such as the collapsibility coefficient of soil between piles, the compaction coefficient of soil between piles, the static penetration test curve of soil between piles, and the load-settlement curve of composite foundation under different distance to diameter ratios were obtained. The results show that the larger the pile spacing, the smaller the soil collapsibility coefficient between the piles. The smaller the distance to diameter ratio, the larger the soil compaction coefficient between the piles, and the greater the specific penetration resistance of the soil between the piles. When the construction waste lime soil compaction pile scheme with a distance to diameter ratio of 2.25 is adopted in the test section, the allowable bearing capacity of the pile body is 175 kpa, and the characteristic value of the bearing capacity of composite foundation is 260 kpa, and the compaction effect is good. After the 7 d immersion test of the pile, the bearing capacity of the composite foundation and the bearing capacity of the pile body decreased by 14.3% on average, which still met the design requirements of the pile. The research results verify the feasibility of treating collapsible loess foundation with lime soil compaction pile, which can provide performance parameter reference for engineering application and further expand the use scope of construction waste.

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Last Update: 2022-09-30