水淬高钛高炉渣制备C40全固废混凝土试验研究

doi:10.11896/cldb.19120047

Abstract
Figure/Table
References
Related Citation (3)

Download:

Full Text ( PDF ) (4156KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to enhance the rate of comprehensive utilization of low activity water-quenched high-titanium blast furnace slag, the cementitious materials were prepared by the technical route of multi-solid waste synergistic excitation. The optimized ratio of water-quenched high-titanium blast furnace slag-steel slag-gypsum-based cementitious materials was determined by orthogonal test. All solid waste concretes were prepared by using undisturbed water-quenched high-titanium furnace slag as aggregate. The results show that the optimal ratio of cementing materials is: the mass ratio of high-titanium blast furnace slag and steel slag is 2∶1, desulfurization gypsum content is 16%, superplasticizer content is 0.28%, water cement ratio is 0.24. When the rubber sand ratio is 1∶1, the 28 d compressive strength of all solid waste concrete test blocks can reach more than 40 MPa under standard curing conditions, meeting the requirements of C40 concrete strength. The results of XRD, TG-DTA and SEM-EDS show that high-titanium blast furnace slag and steel slag promote each other and coordinate hydration under the stimulation of desulphurization gypsum. The hydration products are mainly needle-stick ettringite (AFt) and amorphous C-S-H gel. With the increase of hydration products, ettringite crystal tends to be stable, and the dense structure formed by the interpenetration of C-S-H gel and ettringite is conducive to the growth of concrete strength.

Key words： high-titanium blast furnace slag concrete with industrial solid wastes ettringite (AFt) calcium silicate hydrate gel (C-S-H gel)

Published: 24 December 2020

CLC number:

TU526

Fund:This work was financially supported by the National Key Research and Development Program (2017YFC0210301).

About author:: Huihui Du is a Ph.D. candidate in mineral processing engineering at University of Science and Technology Beijing. Her research interest is the application of various solid waste resources such as desulfurization by-products, steel slag, and high-titanium blast furnace slag.
Wen Ni is a professor and doctoral tutor in the Department of Mineral Processing Engineering, University of Science and Technology Beijing. He is the chief expert of the national "863" theme project "Research and Demonstration of Clean and Efficient Utilization of Typical Tailings Resources and Equipment". He has published more than 300 articles in domestic and international journals, and has been granted 28 invention patents.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	DU Huihui
	NI Wen
	GAO Guangjun

Cite this article:

DU Huihui,NI Wen,GAO Guangjun. Experimental Study on Preparation of C40 Concrete with Industrial Solid Wastes from High-titanium Blast Furnace Slag[J]. Materials Reports, 2020, 34(24): 24055-24060.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.19120047 OR http://www.mater-rep.com/EN/Y2020/V34/I24/24055

1 Zhang S M, Bi Z X, Liu Y, et al. Hebei Metallurgy, 2014(8), 78(in Chinese).
张述明,毕忠新,刘宇,等.河北冶金,2014(8), 78.
2 Yang H M. Study on the performance of hydraulic concrete using high titanium slag as additive and aggregate. Master′s Thesis, Changjiang River Scientific Research Institute, China, 2010 (in Chinese).
杨华美.高钛矿渣作为水工混凝土掺和料及骨料性能研究.硕士学位论文,长江科学院,2010.
3 Yuan R Z, Gao Q Y, Ouyang S X. Journal of Wuhan University of Technology, 1987(3), 47(in Chinese).
袁润章,高琼英,欧阳世翕.武汉理工大学学报,1987(3), 47.
4 Fang R L, Jin C C, Chen F. Cement Technology, 1994(5), 21(in Chinese).
方荣利,金成昌,陈飞.水泥技术,1994(5), 21.
5 Fang R L, Jin C C. Cement,1998(7), 1(in Chinese).
方荣利,金成昌.水泥,1998(7), 1.
6 He N, Chu Z M, Yu D P. Development Guide to Building Materials, 2015, 13(24), 67(in Chinese).
贺宁,初志明,余德品.建材发展导向,2015,13(24), 67.
7 Yang J D, Wang W Y. Shang Y C. China Building Materials Technology, 1988(1),13(in Chinese).
杨基典,王文义,尚衍成.中国建材科技,1988(1),13.
8 Xue G L, Yang Z Q, Gao Q. Mining Research and Development, 2015(2), 21(in Chinese).
薛改利,杨志强,高谦.矿业研究与开发,2015(2), 21.
9 Tan K F, Zhou Z L. Journal of Wuhan University of Technology, 2004, 26(7), 31(in Chinese).
谭克锋,周芝林.武汉理工大学学报,2004,26(7), 31.
10 Kong X W, Wang D, Sui Z T, et al. The Chinese Journal of Process Engineering, 2006(2), 314(in Chinese).
孔祥文,王丹,隋智通,等.过程工程学报,2006(2), 314.
11 Zhu X Y, Bao W Z, Zhao W X, et al. Sichuan Building Materials, 2014(5), 84(in Chinese).
朱晓燕,包文忠,赵文新,等.四川建材,2014(5), 84.
12 Ma X M, Ni W, Liu X. Material Review B:Research Papers, 2016, 30(8), 135(in Chinese).
马旭明,倪文,刘轩.材料导报:研究篇,2016,30(8), 135.
13 Li Y, Ni W, Chen D P, et al. Journal of University of Science and Technology Beijing, 2012, 34(11), 1308(in Chinese).
李颖,倪文,陈德平,等.北京科技大学学报,2012,34(11), 1308.
14 Yang Q B. Cement & Concrete Research, 1999,29(1), 45.
15 Huang W, Ma Q Y. Coal Science and Technology, 2011, 39(3), 22(in Chinese).
黄伟,马芹永.煤炭科学技术,2011,39(3), 22.
16 Ei-Didamony H, Amer A A, Ei-Sokkary T M, et al. Ceramics International, 2013,39(1), 171.
17 Kim M S, Jun Y B, Lee C H, et al. Cement and Concrete Research, 2013,54, 208.
18 Wang Q, Yan P Y, Han S. Science China Technological Sciences, 2011,54(2), 388.
19 Wang Q,Yan P Y. Journal of Chinese Ceramic Society, 2008, 36(10), 1406(in Chinese).
王强,阎培渝.硅酸盐学报,2008,36(10), 1406.
20 Tsai C J, Huang R, Lin W T, et al. Materials & Design, 2014,60, 267.
21 Zhang X F, Ni W, Wu J Y, et al. International Journal of Minerals, Metallurgy and Materials, 2011,18(2), 234.