单轴受压地质聚合物再生混凝土损伤特性及本构模型研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (10): 3608-3614.

单轴受压地质聚合物再生混凝土损伤特性及本构模型研究

张逸超¹, 陈星伊¹, 陈旭升², 周静海¹, 王飞³, 王庆贺¹

1.沈阳建筑大学土木工程学院,沈阳 110168;
2.江苏建航工程有限公司,淮安 223001;
3.沈阳城市建设学院土木工程学院,沈阳 110167

收稿日期:2022-05-23 修回日期:2022-07-29 出版日期:2022-10-15 发布日期:2022-10-26
通讯作者: 周静海,教授。E-mail:zhoujinghai@sjzu.edu.cn
作者简介:张逸超(1988—),男,副教授。主要从事固体废弃物综合利用的研究。E-mail:zhangyichao@sjzu.edu.cn
基金资助:
国家重点实验室开放基金(SYSJJ2020-15);辽宁省教育厅科学研究项目(lnqn202004,lnjc202007);住房和城乡建设部科学技术计划项目(2019-K-054)

Damage Characteristics and Constitutive Model of Geopolymer Recycled Concrete under Uniaxial Compression

ZHANG Yichao¹, CHEN Xingyi¹, CHEN Xusheng², ZHOU Jinghai¹, WANG Fei³, WANG Qinghe¹

1. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. Jiangsu Jianhang Engineering Co., Ltd., Huai'an 223001, China;
3. School of Civil Engineering, Shenyang Urban Construction University, Shenyang 110167, China

Received:2022-05-23 Revised:2022-07-29 Online:2022-10-15 Published:2022-10-26

摘要/Abstract

摘要： 建筑固体废弃物与工业固体废弃物的协同、高效处置对固体废弃物的综合利用有着重要意义。本文采用CT扫描技术与数字体相关法,对单轴受压地质聚合物再生混凝土的损伤演化特性进行分析,并以此建立单轴受压地质聚合物再生混凝土损伤本构模型。研究结果表明,地质聚合物再生混凝土内部非均匀应变场的产生是其发生破坏的主要原因,考虑数值特征和空间特征的损伤因子与应变呈5次函数关系,基于应变等效原理建立的损伤本构模型可以较好地表征在荷载作用下的应力-应变关系。本研究可以为地质聚合物再生混凝土在工程上的应用提供理论基础和技术支撑,同时为再生混凝土的力学损伤研究提供新方法。

关键词: 地质聚合物再生混凝土, CT扫描, 数字体相关法, 损伤因子, 损伤特性, 本构模型

Abstract: The collaborative and efficient disposal of construction solid waste and industrial solid waste is of great significance to the comprehensive utilization of solid waste. In this paper, CT scanning technology and digital volume correlation method were used to analyze the damage evolution characteristics of geopolymer recycled concrete under uniaxial compression, so as to establish the damage constitutive model of geopolymer recycled concrete under uniaxial compression. The results show that the main reason for the failure of geopolymer recycled concrete is the generation of non-uniform strain field. The damage parameter and strain present a quintic function relationship considering the numerical and spatial characteristics. The damage constitutive model based on the strain equivalence principle can better characterize the stress-strain relationship under load. This research can provide theoretical basis and technical support for the application of geopolymer recycled concrete in engineering, and provide a new method for the study of mechanical damage of recycled concrete.

Key words: geopolymer recycled concrete, CT scanning, digital volume correlation method, damage parameter, damage characteristic, constitutive model

中图分类号:

TU528

张逸超, 陈星伊, 陈旭升, 周静海, 王飞, 王庆贺. 单轴受压地质聚合物再生混凝土损伤特性及本构模型研究[J]. 硅酸盐通报, 2022, 41(10): 3608-3614.

ZHANG Yichao, CHEN Xingyi, CHEN Xusheng, ZHOU Jinghai, WANG Fei, WANG Qinghe. Damage Characteristics and Constitutive Model of Geopolymer Recycled Concrete under Uniaxial Compression[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(10): 3608-3614.

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