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材料导报  2023, Vol. 37 Issue (19): 22030250-5    https://doi.org/10.11896/cldb.22030250
  无机非金属及其复合材料 |
生活垃圾焚烧渣细骨料混凝土冻融及自愈试验
石东升1,†, *, 张鹏1,†, 姜文超1,2, 韩平1,3, 马政1,3
1 内蒙古工业大学土木工程学院,呼和浩特 010000
2 内蒙古电力(集团)有限责任公司蒙电项目建管分公司,呼和浩特 010000
3 兴泰建设集团有限公司,呼和浩特 010000
Freeze-thawing and Self-healing Test of Fine Aggregate Concrete with Municipal Solid Waste Incineration Slag
SHI Dongsheng1,†,*, ZHANG Peng1,†, JIANG Wenchao1,2, HAN Ping1,3, MA Zheng1,3
1 School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010000, China
2 Mengdian Project Construction and Management Branch, Inner Mongolia Electric Power (Group) Co., Ltd., Hohhot 010000, China
3 Xingtai Construction Group Co., Ltd., Hohhot 010000, China
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摘要 针对生活垃圾焚烧渣量大、难以利用的问题,本工作研究了利用生活垃圾焚烧渣代替天然砂用作混凝土细骨料。选用0.2、0.4、0.6三种水胶比及0%、25%、50%(质量分数)三种代砂率,研究了生活垃圾焚烧渣细骨料混凝土和普通混凝土在不同冻融次数和冻融后自愈的宏观力学性能和微观结构的变化规律。结果表明,随冻融循环次数的增加两种混凝土的抗压强度均逐渐降低,但生活垃圾焚烧渣细骨料混凝土强度降低幅度小于普通混凝土,说明其抗冻融性能优于普通混凝土。经过自愈养护,焚烧渣混凝土与普通混凝土强度均有一定上升,由于垃圾焚烧渣具有一定的潜在水硬性,自愈强度增长率要大于普通混凝土。
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石东升
张鹏
姜文超
韩平
马政
关键词:  生活垃圾焚烧渣  混凝土  细骨料  冻融循环  自愈    
Abstract: Aiming at the problem of a large amount of municipal solid waste (MSW) incineration slag and difficult utilization, the research topic of using MSW incineration slag instead of natural sand as the fine aggregate of concrete is proposed. Three water-binder ratios ( 0.2, 0.4 and 0.6) and three sand replacement ratios ( 0%, 25% and 50% ) were selected. The change laws of macro-mechanical properties and micro-structure of MSW incineration slag fine aggregate concrete and ordinary concrete under different freeze-thaw cycles and self-healing after freeze-thaw were studied. The results show that the compressive strength decreases gradually with the increase of freeze-thaw cycles, but the strength reduction of MSW incineration slag fine aggregate concrete is less than that of ordinary concrete, indicating that the freeze-thaw resistance is better than that of ordinary concrete. After self-healing curing, the strength of MSW incineration slag concrete and ordinary concrete has a certain increase, because of the potential hydraulic hardness of MSW incineration slag, the growth rate of self-healing strength is greater than that of ordinary concrete.
Key words:  municipal solid waste incineration slag    concrete    fine aggregate    freeze-thaw cycles    self-healing
出版日期:  2023-10-10      发布日期:  2023-09-28
ZTFLH:  TU502  
基金资助: 国家自然科学基金(51868058;52068058);兴泰建设集团研究开发项目(XTXM-RD-01)
通讯作者:  *石东升,内蒙古工业大学土木工程学院教授、博士研究生导师。2002年毕业于内蒙古工学院工业与民用建筑专业,获工学学士学位;2005年毕业于哈尔滨工业大学结构工程,获得工学硕士学位;2011年毕业于Utsunomiya university,获得博士学位。国家一级结构注册工程师、中国土木工程学会混凝土与预应力混凝土分会委员、内蒙古自治区“草原英才”。目前主要从事新型混凝土结构及预应力结构、新型低环境负荷建筑材料、土木工程结构抗震技术等方面的研究工作。shids@imut.edu.cn   
作者简介:  张鹏,内蒙古工业大学土木工程学院硕士研究生。2020年毕业于内蒙古农业大学土木工程专业,获工学学士学位;2020年至今就读于内蒙古工业大学结构工程专业;以第一作者身份在国外学术期刊发表论文1篇,目前主要从事新型混凝土材料的研究工作。†共同第一作者
引用本文:    
石东升, 张鹏, 姜文超, 韩平, 马政. 生活垃圾焚烧渣细骨料混凝土冻融及自愈试验[J]. 材料导报, 2023, 37(19): 22030250-5.
SHI Dongsheng, ZHANG Peng, JIANG Wenchao, HAN Ping, MA Zheng. Freeze-thawing and Self-healing Test of Fine Aggregate Concrete with Municipal Solid Waste Incineration Slag. Materials Reports, 2023, 37(19): 22030250-5.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22030250  或          http://www.mater-rep.com/CN/Y2023/V37/I19/22030250
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