Mechanical Properties of Composite Soda Residue Soil Mixed with Fly Ash and Soft Clay

被引：0

作者：

Wang Y. ^{[1
]}

Sun C. ^{[1
]}

Wang X. ^{[2
]}

Chen Y. ^{[2
]}

Gong X. ^{[2
]}

机构：

[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin

[2] Tianjin Port （Group） Co.， Ltd., Tianjin

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2023年 / 26卷 / 02期

关键词：

composite soda residue soil; creep property; fly ash; optimal proportion; triaxial test;

D O I：

10.3969/j.issn.1007-9629.2023.02.014

中图分类号：

学科分类号：

摘要：

To explore the economically suitable soda residue foundation soil with excellent bearing performance， 24 kinds of composite soda residue soil mixed with fly ash and soft clay were designed. Taking both unconfined compressive strength and economic factor into consideration， the optimal proportion was determined through fuzzy evaluation method. Splitting tensile test， static triaxial test and creep test were carried out for composite soda residue soil with optimal proportion. The results show that both soft clay and fly ash have obvious reinforcement effect on alkali slag. Addition of soft clay can reduce the amount of fly ash and has good economical applicability. The ratio of splitting tensile strength of composite soda residue soil to its unconfined compressive strength is 0.15. The consolidation confining pressure has the greatest influence on the undrained strength of the composite soda residue soil， followed by the over‑consolidation ratio and the consolidation ratio is the least. When the upper load does not reach the long‑term strength， the creep characteristics are relatively stable and the value is extremely small. © 2023 Tongji University. All rights reserved.

引用

页码：206 / 214

页数：8

共 15 条

[1]

SHAO Yong, LIU Xiaoli, ZHU Jinjun, Experimental study on the improvement of marine soft soil by alkali residue［J］, Water Power, 45, 4, (2019)

[2]

SHAO Yong, LIU Xiaoli, ZHU Jinjun, Analysis on application status of alkali residue in engineering construction［J］, Industrial Minerals & Processing, 48, 6, (2019)

[3]

TIAN Xuewei, LI Xianzhong, Research on engineering utilization of soda residue soil in Tangshan［J］, Building Science, 25, 7, (2009)

[4]

HOU Jinfang, Study of the soda residue replacing the engineering soil［D］, (2004)

[5]

ZHAO Xianhui, LIU Chunyuan, ZHU Qin, Et al., Cementation characteristics and freeze‑thaw mechanism of fly ash‑modified soda residue soils［J］, Journal of Shenzhen University（Science and Engineering, 35, 1, (2018)

[6]

JI Guodong, YANG Chunhe, LIU Wei, Et al., An experimental study on the engineering properties of backfilled alkali wastes reinforced by fly ash［J］, Rock and Soil Mechanics, 36, 8, (2015)

[7]

LIU Jizhong, ZHAO Qingxin, ZHANG Jinrui, Et al., Microstructure and composition of hardened paste of soda residue‑slag complex binding materials［J］, Journal of Building Materials, 22, 6, (2019)

[8]

LIN Yonghui, XU Dongqiang, ZHAO Xianhui, Experimental research on mechanical property and microstructure of blast furnace slag cementitious materials activated by soda residue［J］, Bulletin of the Chinese Ceramic Society, 38, 9, (2019)

[9]

ZHANG Peng, ZHAO Xiaoqing, JIANG Dewen, Et al., Experimental study on strength properties and water stability suda residue soft soil［J］, Highway, 65, 2, (2020)

[10]

CHEN Yonghui, CHEN Mingyu, ZHANG Wanlu, Et al., Engineering properties of solidified soda residue with GGBS and cement［J］, Journal of Building Materials, 20, 4, (2017)

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