材料参数对清水混凝土表观气孔控制的影响

材料导报

2022, Vol. 36

Issue (Z1): 22030021-9

无机非金属及其复合材料

材料参数对清水混凝土表观气孔控制的影响

陈燕强^1,2, 钱春香^1,2, 张健^1,2

1 东南大学材料科学与工程学院,南京 211189
2 东南大学绿色建材与固碳利用研究中心,南京 211189

Effect of Material Parameters on the Control of the Apparent Porosity of Fair-faced Concrete

CHEN Yanqiang^1,2, QIAN Chunxiang^1,2, ZHANG Jian^1,2

1 School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2 Research Center of Green Building Materials & Carbon Utilization, Southeast University, Nanjing 211189, China

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摘要材料参数是影响清水混凝土表观质量的重要因素。本工作采用不同种类的水泥、粉煤灰、粗细骨料和外加剂等组分研究了初始含气量、粗骨料最大粒径、塑性粘度系数、初始屈服应力和泌水率对清水混凝土表观气孔的影响,并分别给出了每种材料参数的适宜范围。此外,基于表面气孔面积率、气孔分布标准差和最大气孔直径三个参数提出了清水混凝土表观气孔评价标准。最后得出,将不同的材料参数调控至相应范围更易制备出表观质量优异的清水混凝土。

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关键词: 清水混凝土材料参数表观气孔评价标准

Abstract: The material parameters of fair-faced concrete are important factors that determine its apparent quality. This work uses different types of cement, fly ash, coarse and fine aggregates and additives to study the effects of the initial air content, maximum coarse aggregate particle size, plastic viscosity coefficient, initial yield stress and bleeding rate on the apparent pores of fair-faced concrete. The appropriate range of each material parameter is given separately. In addition, based on the three parameters of the surface pore area ratio, pore distribution standard deviation and maximum pore diameter, the apparent pore evaluation standard of fair-faced concrete is proposed. Finally, fair-faced concrete with excellent apparent quality can be obtained by adjusting the material parameters to the corresponding range.

Key words: fair-faced concrete material parameters apparent porosity evaluation standard

出版日期: 2022-06-05 发布日期: 2022-06-08

ZTFLH:

TU528

基金资助: 国家自然科学基金重点项目(51738003);京津冀地区重点客站关键技术研究(P2018G049)

通讯作者: cxqianseu1@163.com

作者简介: 陈燕强,2016年本科毕业于河海大学力学与材料学院无机非金属材料系,现于东南大学材料科学与工程学院博士在读,主要从事水泥基材料抗泛碱、自清洁和清水混凝土等相关研究。
钱春香,国务院政府特殊津贴专家、江苏特聘教授、东南大学首席教授、东南大学绿色建材研究中心主任。1992年南京化工学院博士毕业(师从唐明述院士),之后进入东南大学工作、主要从事结构功能一体化水泥基材料、清水混凝土、高性能混凝土与微生物智能混凝土、低碳胶凝材料和绿色节能建筑材料的研究。获得2013年度国家科技进步二等奖、2012年度教育部科技进步一等奖、2017年度中国建材联合会·中国硅酸盐学会建材科技发明一等奖,参与获得2014年度国家科技进步二等奖、2013年度北京市科技进步一等奖。在国内外核心刊物和重要国际会议发表论文200余篇,授权发明专利30多项。

引用本文:

陈燕强, 钱春香, 张健. 材料参数对清水混凝土表观气孔控制的影响[J]. 材料导报, 2022, 36(Z1): 22030021-9.
CHEN Yanqiang, QIAN Chunxiang, ZHANG Jian. Effect of Material Parameters on the Control of the Apparent Porosity of Fair-faced Concrete. Materials Reports, 2022, 36(Z1): 22030021-9.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2022/V36/IZ1/22030021

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