硅灰对再生混凝土界面过渡区的影响

doi:10.11896/cldb.21090034

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (14466KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to improve recycled concrete's mechanical properties and durability, silica fume was used as a reinforcing material. The influence of silica fume on the compressive strength at 3 days, 28 days, and 90 days and the ability to resist chloride ion penetration at 28 and 90 days for the recycled concrete were investigated. The microstructure of recycled concrete at 28 days was analyzed by micro-testing equipment such as scanning electron microscopy, microhardness tester. The Mercury Intrusion Porosimetry was used to investigate pore structure parameters and analyze the effect of silica fume on the pore properties. The results show that silica fume is beneficial to improve the ability to resist chloride ion penetration for recycled concrete, and the strengthening effect increases first and then decreases with the increasing of silica fume dosage. Silica fume improves the structure of multiple interfacial transition zones for recycled concrete, increasing ITZ microhardness and reducing ITZ porosity. There are many harmful pores in recycled concrete, silica fume refines the pore structure and reduces the porosity of the recycled concrete, the improvement effect is the best at the dosage of 6%.

Key words： recycled concrete silica fume compressive strength microhardness interface transition zone pore structure

Published: 10 June 2023 Online: 2023-06-19

CLC number:

TU528

Fund:National Natural Science Foundation of China (51978353).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	GAO Song
	BAN Shunli
	GUO Jia
	ZOU Chuanxue
	GONG Yaoyao

Cite this article:

GAO Song,BAN Shunli,GUO Jia, et al. Effect of Silica Fume on Interfacial Transition Zone of Recycled Concrete[J]. Materials Reports, 2023, 37(11): 21090034-7.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.21090034 OR http://www.mater-rep.com/EN/Y2023/V37/I11/21090034

1 Li H, Guo Q J, Wang J B, et al. Materials Reports, 2020, 34(13), 13050 (in Chinese).
李恒, 郭庆军, 王家滨, 等. 材料导报, 2020, 34(13), 13050.
2 Li Y, Yang X B, Lou P, et al. Construction and Building Materials, 2021, 287.
3 Sun D S, Li Z Y, Liu K W, et al. Materials Reports, 2021, 35(11), 11027 (in Chinese).
孙道胜, 李泽英, 刘开伟, 等.材料导报, 2021, 35(11), 11027.
4 Xie J, Zhang H, Duan L, et al. Construction and Building Materials, 2020, 256(30), 119393.
5 Fang G H, Zhang M Z. Cement and Concrete Research, 2020, 129, 105963.
6 Bao J Z, Dong X X, Chi S P, et al. Cement and Concrete Research, 2020, 136, 106175.
7 Zeng J J, Fan Z H, Wang S N. Journal of Wuhan University of Technology, 2014, 36 (6), 115 (in Chinese).
曾俊杰, 范志宏, 王胜年. 武汉理工大学学报, 2014, 36 (6), 115.
8 Zhang X, Zhang H, Zhang X L, et al. Journal of Building Materials, 2019, 22(4), 626 (in Chinese).
张雄, 张恒, 张晓乐, 等. 建筑材料学报, 2019, 22(4), 626.
9 Yu Q, Zeng J J, Fan Z H. Bulletin of the Chinese Ceramic Society, 2014, 33(12), 3134 (in Chinese).
余强, 曾俊杰, 范志宏.硅酸盐通报, 2014, 33(12), 3134.
10 Xuan D X, Shui Z H, Wu S P. Construction and Building Materials, 2009, 23 (7), 2631.
11 Nili M, Ehsani A. Materials and Design, 2015,75, 174.
12 Lizarazo-Marriaga J, Higuera C, Claisse P. Construction and Building Materials, 2014,52, 9.
13 Xu W B, Shui Z H, Ma J T, et al. Bulletin of the Chinese Ceramic Society, 2011, 30 (1), 7 (in Chinese).
徐文冰, 水中和, 马军涛, 等. 硅酸盐通报, 2011, 30(1), 7.
14 Yue G B, Ma Z M, Liu M, et al. Construction and Building Materials, 2019, 245 (10), 118419.
15 Wong H S, Head M K, Buenfeld N R. Cement and Concrete Research, 2005, 36 (6), 1083.
16 Gao Y, Schutter G D, Ye G, et al. Construction and Building Materials, 2013, 38 (1), 1051.
17 Li H, Wang J B, Guo Q J, et al. Bulletin of the Chinese Ceramic Society, 2020, 39 (8), 2608 (in Chinese).
李恒, 王家滨, 郭庆军,等. 硅酸盐通报, 2020, 39 (8), 2608.
18 Wang Z X, Li Q Y, Cao Y B, et al. Bulletin of the Chinese Ceramic Society, 2017, 36 (2), 443 (in Chinese).
王忠星, 李秋义, 曹瑜斌,等. 2017, 36 (2), 443.
19 Gao Y, Schutter G D, Ye G.Cement and Concrete Research, 2013 ,52, 149.
20 Duan P, Shui Z H, Chen W, et al. Construction and Building Materials, 2013, 44 (7), 1.