[1]程 亮,邓祥辉,薛丽媛,等.C30再生粗骨料混凝土的抗冻耐久性试验研究[J].西安工业大学学报,2020,(01):55-63.[doi:10.16185/j.jxatu.edu.cn.2020.01.008 ]
 CHENG Liang,DENG Xianghui,XUE Liyuan,et al.Freeze-Proof Durability of C30 Recycled Coarse Aggregate Concrete[J].Journal of Xi'an Technological University,2020,(01):55-63.[doi:10.16185/j.jxatu.edu.cn.2020.01.008 ]
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C30再生粗骨料混凝土的抗冻耐久性试验研究()
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《西安工业大学学报》[ISSN:1673-9965/CN:61-1458/N]

卷:
期数:
2020年01期
页码:
55-63
栏目:
机械与工程技术
出版日期:
2020-02-15

文章信息/Info

Title:
Freeze-Proof Durability of C30 Recycled Coarse Aggregate Concrete
文章编号:
1673-9965(2020)01-0055-09
作者:
程 亮1邓祥辉2薛丽媛2王靖媛2
(1.陕西省现代建筑设计研究院,西安 710048; 2.西安工业大学 建筑工程学院,西安 710021
Author(s):
CHENG Liang1DENG Xianghui2XUE Liyuan2WANG Jingyuan2
(1.Shaanxi Modern Architecture Design and Research Institute,Xi'an 710048,China; 2.School of Civil & Architecture Engineering,Xi'an Technological University,Xi'an 710021,China)
关键词:
再生粗骨料混凝土 冻融循环 超声波波速 抗冻耐久性
Keywords:
recycled coarse aggregate concrete freezethaw cycle ultrasonic velocity freezeproof durability
分类号:
TU528.45
DOI:
10.16185/j.jxatu.edu.cn.2020.01.008
文献标志码:
A
摘要:
为了研究再生粗骨料混凝土的抗冻耐久性,以C30再生混凝土为试验材料,对比分析了再生粗骨料掺量为0,25%,50%,75%和100%的再生混凝土在冻融循环试验中质量损失、动态弹性模量、超声波波速和立方抗压强度4项性能的演变规律,以及在单轴压缩试验中的应力-应变曲线。结果表明:随着冻融循环次数的增加,混凝土的质量先增加后减小,动弹性模量、立方体抗压强度和超声波波速逐渐减小; 粗骨料掺量为50%的再生混凝土和普通混凝土的抗冻耐久性能相当,优于其他掺量再生混凝土抗冻耐久性。
Abstract:
The paper studies the freeze-proof durability of recycled coarse aggregate concrete.With the C30 recycled concrete as the test material,the recycled concretes added with 0,25%,50%,75% and 100% recycled coarse aggregate are compared.The evolution of mass loss,dynamic elastic modulus,ultrasonic velocity,and cubic compressive strength in the freeze-thaw cycle test,and the stress-strain curve in the uniaxial compression test are analyzed.The results show that,as the number of freeze-thaw cycles increases,the mass of concrete increases first and then decrease,and the dynamic elastic modulus,cubic compressive strength and ultrasonic wave velocity decrease gradually.Recycled concrete with 50% admixture has the same freeze-proof durability as ordinary concrete,better than that of other sorts of recycled concrete.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-03-26
基金资助:陕西省重点研发计划项目(2018SF-391); 陕西省住房和城乡建设厅科技计划项目(2017-K55)。 第一
作者简介:程 亮(1972-),男,陕西省现代建筑设计研究院高级工程师,主要研究方向为混凝土结构设计,E-mail:811202646@qq.com。
(编辑、校对 张 超)
更新日期/Last Update: 2020-02-15