Formulation optimization of oil shale semi-coke/lime/cement solidified loess based on ternary nephogram and establishment of elastic-plastic damage model

被引：2

作者：

Wei, Yongfeng ^{[1
,2
,3
]}

Song, Kunkun ^{[1
,2
]}

Zhang, Qiangqiang ^{[1
,2
]}

Dou, Hui ^{[3
,4
]}

Xu, Huaxin ^{[3
,4
]}

机构：

[1] Lanzhou Univ, Key Lab Mech Disaster & Environm Western China, Minist Educ China, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Peoples R China

[3] Gansu Rd & Bridge Construct Grp, Lanzhou 730000, Peoples R China

[4] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730000, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 428卷

关键词：

Oil shale semi-coke/lime/cement stabilized; loess; Ternary design method; Formation mechanism; Stress-strain characteristics; Elasto-plastic damage model;

D O I：

10.1016/j.conbuildmat.2024.136313

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Oil shale semi -coke (OSS) is a industrial solid waste produced after the dry distillation refining of oil shale. Due to its internal enrichment of activity silico-aluminate minerals, it can be utilized to prepare low -carbon cementitious materials through alkali activation. In this study, a composite material for reinforcing loess was synthesized using OSS, lime, and cement. Drawing upon the ternary design method, the optimization of oil shale semi -coke/ lime/cement stabilized loess (OLC-SL) formulation was explored. Through microscopic analysis, the enhancement mechanism of OLC-SL was probed. Furthermore, it comprehensively understood the stress -strain characteristics of OLC-SL by conducting triaxial experiments and developed an elastic -plastic damage model for OLC-SL through numerical. The outcomes of this study provide novel insights and theoretical support for the resource utilization of OSS waste, and hold crucial implications for promoting the large-scale application of OSS waste in the disposal of expansive loess.

引用

页数：13

共 44 条

[1] A modified Mazars damage model with energy regularization [J].

Arruda, M. R. T. ;

Pacheco, J. ;

Castro, Luis M. S. ;

Julio, E. .

ENGINEERING FRACTURE MECHANICS, 2022, 259

[2] Loess as a collapsible soil: Some basic particle packing aspects [J].

Assadi-Langroudi, Arya ;

Ng'ambi, Samson ;

Smalley, Ian .

QUATERNARY INTERNATIONAL, 2018, 469 :20-29

[3] Mechanical properties and micro-mechanism of loess roadbed filling using by-product red mud as a partial alternative [J].

Chen, Ruifeng ;

Cai, Guojun ;

Dong, Xiaoqiang ;

Mi, Dongyun ;

Puppala, Anand J. ;

Duan, Wei .

CONSTRUCTION AND BUILDING MATERIALS, 2019, 216 :188-201

[4] Geopolymers: Ceramic-Like Inorganic Polymers [J].

Davidovits, J. .

JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY, 2017, 8 (03) :335-350

[5] Geopolymer technology:: the current state of the art [J].

Duxson, P. ;

Fernandez-Jimenez, A. ;

Provis, J. L. ;

Lukey, G. C. ;

Palomo, A. ;

van Deventer, J. S. J. .

JOURNAL OF MATERIALS SCIENCE, 2007, 42 (09) :2917-2933

[6] LOESS IMPROVEMENT METHODS [J].

EVSTATIEV, D .

ENGINEERING GEOLOGY, 1988, 25 (2-4) :341-366

[7] Road base materials prepared by multi-industrial solid wastes in China: A review [J].

Gu, Jiarui ;

Liu, Xiaoming ;

Zhang, Zengqi .

CONSTRUCTION AND BUILDING MATERIALS, 2023, 373

[8] Mechanical properties estimation of lime stabilized loess applied in various engineering fields [J].

Guo, Jian ;

Jia, Liang ;

Wei, Zhiqiang ;

Yao, Kai ;

Yang, Gengxia ;

Bao, Dexiang .

CONSTRUCTION AND BUILDING MATERIALS, 2023, 393

[9]

Haixiang Y, 2009, Research and application on elastoplastic damage constitutive model for concrete based on ideally undamaged state

[10] Improvement of water yield and net primary productivity ecosystem services in the Loess Plateau of China since the "Grain for Green" project [J].

Huang, Wanyun ;

Wang, Peng ;

He, Liang ;

Liu, Baoyuan .

ECOLOGICAL INDICATORS, 2023, 154

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