[1]徐善华,孔德亮,李安邦,等.完全碳化混凝土单轴受压力学性能试验研究[J].西安建筑科技大学学报:自然科学版,2015,47(02):187-191.
　XU Shanhua,KONG Deliang,LI Anbang,et al.Study on mechanical property of carbonized concrete under monotonic loading[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(02):187-191.
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完全碳化混凝土单轴受压力学性能试验研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年02期
页码:
187-191
栏目:
出版日期:
2015-04-28

文章信息/Info

Title:
Study on mechanical property of carbonized concrete under monotonic loading
作者:
徐善华; 孔德亮; 李安邦; 朱文治
西安建筑科技大学土木工程学院，陕西 西安 710055
Author(s):
XU Shanhua;  KONG Deliang;  LI Anbang;  ZHU Wenzhi
School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China
关键词:
碳化; 应力-应变关系; 峰值应变; 峰值应力; 极限应变
Keywords:
carbonation;  stress-strain relation;  peak strain;  peak stress;  ultimate strain
文献标志码:
A
摘要:
为研究完全碳化混凝土力学性能变化规律，本文开展了C20、C30 以及C40 三批次混凝土实验室快速碳化以及单调加载试验．试验结果表明，完全碳化混凝土脆性增加，峰值应力提高，其峰值应力提高增幅随混凝土强度增加而减小；完全碳化混凝土峰值应变减小幅度在10%左右，且不随混凝土强度增加而发生明显变化；完全碳化混凝土极限应变随混凝土强度增加而逐渐减小，减小幅度随随混凝土强度增加而增加，当混凝土强度从C20 变化到C40 情况下，试件极限应变减小幅度为10%~30%．本文研究成果可为既有混凝土结构安全评估及抗震性能分析提供技术依据．
Abstract:
The purpose of this study is to investigate the effect of full carbonization on the mechanical property of concrete. Threebatches of specimens with concrete strength grade of C20, C30, C40 were cast, and accelerated carbonation tests and monotonicloading tests were carried out. It shows that the material brittleness of concrete and the peak strength increased after carbonization;the strain at peak compressive stress decreased about 10% and the effect of concrete strength on the decreasing amplitude was notsignificant; the ultimate strain decreased and the decreasing amplitude were obviously impacted by the concrete strength grade, andthe decreasing amplitude increased from 10% to 30% as the grade changed from C20 to C40. This study can provide the seismicperformance evaluation on the existing concrete structure.

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备注/Memo

备注/Memo:
收稿日期：2014-02-26 修改稿日期：2015-04-14
基金项目：国家自然科学基金项目（51078307）；教育部长江学者和创新团队发展计划项目（IRT13089）
作者简介：徐善华（1963-），男，教授，博士，博士生导师，主要从事工程结构可靠性及耐久性研究．E-mail：xushanhua@163.com
更新日期/Last Update: 2015-09-02