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[1]白希选,张 迪,陈旭勇*,等.碱激发陶瓷粉对再生混凝土坍落度和抗压强度的影响[J].武汉工程大学学报,2022,44(01):102-106.[doi:10.19843/j.cnki.CN42-1779/TQ.202107017]
 BAI Xixuan,ZHANG Di,CHEN Xuyong*,et al.Effect of Alkali-Activated Ceramic Powder on Slump and Compressive Strength of Recycled Concrete[J].Journal of Wuhan Institute of Technology,2022,44(01):102-106.[doi:10.19843/j.cnki.CN42-1779/TQ.202107017]
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碱激发陶瓷粉对再生混凝土坍落度和抗压强度的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
44
期数:
2022年01期
页码:
102-106
栏目:
资源与土木工程
出版日期:
2022-02-28

文章信息/Info

Title:
Effect of Alkali-Activated Ceramic Powder on Slump and Compressive Strength of Recycled Concrete
文章编号:
1674 - 2869(2022)01 - 0102 - 05
作者:
白希选张 迪陈旭勇*王相卿
武汉工程大学土木工程与建筑学院,湖北 武汉 430074
Author(s):
BAI Xixuan ZHANG Di CHEN Xuyong* WANG Xiangqing
School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
陶瓷粉碱激发再生骨料混凝土SAI试验法
Keywords:
ceramic powder alkali-activation recycled aggregate concrete SAI test method
分类号:
TQ172.71
DOI:
10.19843/j.cnki.CN42-1779/TQ.202107017
文献标志码:
A
摘要:
将陶瓷废弃物破碎研磨后得到陶瓷粉(CP),将CP按质量分数20%取代水泥并用3%质量分数NaOH对CP进行碱激发,采用强度活性指数(SAI)试验法来评价碱激发后CP的火山灰活性。然后将碱激发后的CP按0%、10%、20%、30%和40%质量分数取代水泥制备再生骨料混凝土进行7、28、56 d抗压强度实验。结果表明:碱激发后CP的火山灰活性显著提高。碱激发后的CP制备的再生骨料混凝土抗压强度有较大提升,掺入质量分数20%碱激发后的陶瓷粉再生混凝土养护56 d后抗压强度与掺入质量分数10%未活化陶瓷粉再生混凝土相当,均为35.01 MPa。考虑废弃物利用率和混凝土力学性能,质量分数20%碱激发陶瓷粉取代率对再生混凝土有着最好的抗压强度。
Abstract:
Ceramic powder (CP) was obtained by crushing and grinding ceramic waste. The CP was used to replace cement, occupying 20% in mass. It was excited with 3% mass fraction of NaOH. The pozzolanic activity of alkali-activated ceramic powder was evaluated by strength activity index test method. Then,the recycled aggregate concrete was prepared by using alkali-activated ceramic powder with the mass fractions of 0%,10%,20%,30% and 40% to replace the same amount cement,and the compressive strength experiments of 7,28 and 56 d were carried out respectively. The results show that the pozzolanic activity of alkali-activated ceramic powder is significantly improved. The compressive strength of recycled aggregate concrete prepared by alkali-activated ceramic powder is greatly improved,the compressive strength of recycled concrete mixed with 20% alkali-activated ceramic powder after 56 d of curing is equivalent to that of recycled concrete mixed with 10% unactivated ceramic powder, which is 35.01 MPa. Considering the strength,20% substitution rate of alkali-activated ceramic powder results in the best compressive strength for recycled concrete.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-07-20作者简介:白希选,博士,副教授,硕士研究生导师。E-mail:[email protected]*通讯作者:陈旭勇,博士,教授。E-mail:[email protected]引文格式:白希选,张迪,陈旭勇,等. 碱激发陶瓷粉对再生混凝土坍落度和抗压强度的影响[J]. 武汉工程大学学报,2022,44(1):102-106.
更新日期/Last Update: 2022-03-02