供氧剂浓度和浸泡位置对MICP再生骨料性能的影响

doi:10.11896/cldb.20020033

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Abstract Optimizing mineralization mode is an effective way to improve the effect of microbial mineralization deposition (MICP) on the recovery of recycled aggregate. In this study, the effects of different mineralization methods on the physical properties of recycled aggregate were analyzed by changing the concentration of oxygen-supplying agent and the soaking position of recycled aggregate in culture solution, and the test results were further verified by microscopic analysis. The results showed that when the concentration of calcium peroxide was 15 g/L and the soaking position was in the middle of the culture solution, the water absorption rate of MICP recycled aggregate decreased by 40.4%, the crushing index decreased by 19.7%, the porosity decreased significantly and the pore size distribution was the best. At the same time, a large number of calcium carbonate crystals were produced to fill aggregate cracks, and the mineralization deposition effect was the best.

Key words： microbial mineralization deposition (MICP) calcium peroxide recycled aggregate mercury intrusion test pore structure

Published: 23 February 2021

CLC number:

TU528

Fund:This work was financially supported by the National Natural Science Foundation of China (51578342), China Postdoctoral Science Fund Funding Project (2015M582418).

Corresponding Authors: zygqd@sina.com

About author:: Yaguang Zhu, Ph.D., associate professor, master tutor. Harbin Institute of Technology Mobile Station and Shenzhen University Workstation joint training in the station postdoctoral, China Green Building and Energy Conservation Committee member, China Building Waste Resources Chemical Group members. The main research interests are the resource utilization of construction waste and the construction control and safety evaluation of large span bridges. Presided over and completed the key project of Qingdao public domain science and technology Support plan "Research and application of construction waste resource in the construction of Qingdao World Horticultural Exposition Park",Participate in the completion of the national "xv." Science and Technology Support Project sub-topic 1,the National "Eleven-Five" Science and Technology Support Project 1 projects, the National Natural Fund 2, won the third prize of science and Technology in Shandong Province and Qingdao Science and Technology Progress Second Prize, has published more than 20 academic papers.

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	ZHU Yaguang
	RONG Danping
	XU Peizhen
	CHEN Fei
	SUN Wentang

Cite this article:

ZHU Yaguang,RONG Danping,XU Peizhen, et al. Influence of Oxygen Supply Agent Concentration and Soaking Position on MICP Recycled Aggregate Properties[J]. Materials Reports, 2021, 35(4): 4074-4078.

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http://www.mater-rep.com/EN/10.11896/cldb.20020033 OR http://www.mater-rep.com/EN/Y2021/V35/I4/4074

1 Li D, Sun Z Q, Su Y, et al.Construction Technology, 2018, 47(S3), 129(in Chinese).
李丹,孙占琦,苏颖, 等.施工技术, 2018,47(S3),129.
2 Bru K, Touzé S, Bourgeois F,et al. International Journal of Mineral Processing, 2014, 126, 90.
3 Quan H Z, et al. In: Japan Academic conference.Japan, 2002, pp. 1017.
4 Li Q Y, Li Y X, Zhu C J, et al.Concrete, 2006(1), 74(in Chinese).
李秋义,李云霞, 朱崇绩,等.混凝土, 2006(1),74.
5 Tam V W Y, Tam C M, Le K N.Conservation and Recycling, 2007, 50, 82.
6 Jonkers H M, Thijssen A, Muyzer G, et al.Ecological Engineering, 2010, 36(2),230.
7 Kou S C, Zhan B J, Poon C S.Cement & Concrete Composites, 2014, 45(1),22.
8 Anna M Grabiec, Justyna Klama, Daniel Zawal, et al.Construction and Building Materials, 2012, 34(9),145.
9 Qian C X, Ren L F, Luo M.Journal of the Chinese Ceramic Society, 2015, 43(5), 619(in Chinese).
钱春香,任立夫,罗勉.硅酸盐学报, 2015, 43(5), 619.
10 Wu Y K. Experimental study on the effect of micp on mechanical properties of recycled aggregate and recycled mortar. Master's Thesis, Qingdao University of Technology, China, 2017(in Chinese).
吴延凯. MICP对再生骨料和再生砂浆力学性能影响的试验研究. 硕士学位论文, 青岛理工大学,2017.
11 Zhang X T. Study on modified regenerative aggregate and its mechanism by microbial mineralization deposition. Master's Thesis, Qingdao University of Technology, China, 2016(in Chinese).
张晓彤. 微生物矿化沉积改性再生骨料及其机理研究. 硕士学位论文, 青岛理工大学,2016.
12 Wu C R. Study on microbial mineralized and deposited modified recycled aggregate and its microscopic mechanism. Master's Thesis, Qingdao University of Technology, China, 2017(in Chinese).
吴春然. 微生物矿化沉积改性再生骨料及其微观机理研究. 硕士学位论文, 青岛理工大学,2017.
13 Zhu Y G, Wu C R, Wu Y K, et al.Concrete, 2018(7), 88(in Chinese).
朱亚光,吴春然,吴延凯,等.混凝土, 2018(7), 88.
14 Zhu Y G, Wu Y K, Wu C R.China Concrete and Cement Products, 2017 (12),93(in Chinese).
朱亚光,吴延凯,吴春然.混凝土与水泥制品, 2017(12), 93.
15 Liu P S, Ma X M.Detection method of porous materials,Metallurgical Industry Press, China,2006(in Chinese).
刘培生,马晓明.多孔材料检测方法, 冶金工业出版社, 2006.
16 Qiao H H, Lu Z Y, Yan Y.Journal of Wuhan University of Technology, 2008(5),35(in Chinese).
乔欢欢,卢忠远,严云.武汉理工大学学报,2008(5),35.
17 Zhang J L, Wang C G, Wang Q L, et al. Applied Microbiology and Biotechnology, 2016, 100, 10295.