Properties and Application of Controlled Foundation Materials from Construction Waste and Pit Silt

被引：0

作者：

Xiao, Feipeng ^{[1
]}

Cao, Zhenglong ^{[1
]}

Wang, Xiaobing ^{[1
]}

Xu, Ling ^{[1
]}

Wu, Biao ^{[2
]}

Han, Yifeng ^{[3
]}

Xu, Xiyong ^{[3
]}

机构：

[1] Key Laboratory of Road and Traffic Engineering, The Ministry of Education, Tongji University, Shanghai

[2] China Airport Planning and Design Institute Co.，Ltd., Beijing

[3] Shandong Provincial Airport Management Group Co.，Ltd., Jinan

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2024年 / 52卷 / 09期

关键词：

compressive strength; controlled low strength materials(CLSM); durability; foundation pit backfill; road engineering;

D O I：

10.11908/j.issn.0253-374x.24122

中图分类号：

学科分类号：

摘要：

In order to deal with the problem of backfilling in the narrow area of the underpass in the high-load flight area, a large amount of construction waste and silt produced by the reconstruction and expansion of Jinan Yaoqiang Airport was used as the main aggregate to prepare the controlled low-strength materials(CLSM)with the characteristics of high fluidity,self-compaction,and high strength. The test results show that the strength of the test group mixed with construction waste or stone debris increases significantly compared with the only silt used. The modification effect of construction waste is about 80% higher than that of stone debris. It is more economical to add construction waste than stone debris, but not for the increase of the cement content. The dry - wet cycle strength of the best mix ratio decreases and stabilizes at about 1 MPa, with the mass loss rate stabilizing at about 1%. The compression performance is the same as soil with a 6% cement quality score,and the compressive deformation after the dry - wet cycle is much less than that of silt,which meets the long-term bearing requirements of the foundation in flight area. © 2024 Science Press. All rights reserved.

引用

页码：1364 / 1373

页数：9

共 18 条

[1] REN Xintong, Study on urban planning strategy of reducing construction waste from source, (2019)
[2] RONG Yuefang, YAO Tong, SUN Xiaosong, Planning strategies for reduction of construction waste in Beijing [J], Modern Urban Research, 7, 3, (2021)
[3] LI Lihua, LIU Jiabei, XIAO Henglin, Et al., Environmental impact of heavy metal leaching from construction and demolition waste aggregates [J], Journal of Yangtze River Scientific Research Institute, 38, 9, (2021)
[4] MA L, ZHANG L., Evolutionary game analysis of construction waste recycling management in China [J], Resources Conservation and Recycling, 161, 10, (2020)
[5] ZHOU Baosheng, JIANG Jian, CHEN Zhibin, Applied research of reclaimed material of construction waste in back-fill foundation pit, Municipal Engineering Technology, 34, 2, (2016)
[6] CHEN Mei, JIN Xin, WU Jun, Et al., Recycling behavior of construction waste and silt mixture in subgrade [J], Jiangsu Construction, 206, 4, (2020)
[7] ZHOU Haicheng, SHAN Hongwei, FENG Liangping, Et al., Experiment and application research on the mix ratio of fluid cement-solidified soil based on silty clay, Highway, 67, 10, (2022)
[8] WEI Jianjun, ZHANG Jinxi, WANG Jiangang, Properties of flowable backfill materials using recycled fine aggregates of brick and concrete waste, Journal of Civil,Architectural & Environmental Engineering, 38, 3, (2016)
[9] WANG Jiangang, ZHANG Jinxi, GUO Yangyang, Et al., Influence factors of rapid-hardening controlled low strength materials made of recycled fine aggregate based on red brick construction and demolition waste [J], Journal of Beijing University of Technology, 44, 11, (2018)
[10] RAN Jin, ZHANG Jinxi, YANG Mijia, Et al., Controlled low-strength material incorporating recycled fine aggregate from urban red brick based construction waste [J], Journal of Southeast University(English Edition), 33, 4, (2017)

← 1 2 →