Effect on Structure and Early Hydration Activity of Steel Slag Modified by Adjusting Materials and Temperature

Abstract:

Article Preview

The aim of this paper is to investigate effect on hydration activity of steel slag by modifying its mineralogical composition and structure incorporating electric arc furnace steel slag (EAFS) and fly ash (FA) into it at high temperature, and the process was simulated in laboratory that mineral admixtures were added to the melting slag during slag-discharging process. The mineralogical composition, microstructure of both basic oxygen steel slag (BOFS) and modified steel slag (MSS) were identified with XRD and optical microscopy. The results show that after modification, silicate minerals in MSS are decreased in amount with FA being increased; furthermore, silicate minerals in which are increased in amount with C/S molar ratio improvement. Three days cumulative hydration heat of GB40-1350 is greater than that of BOFS by 1.9 times.

Info:

Periodical:

Advanced Materials Research (Volumes 250-253)

Edited by:

Guangfan Li, Yong Huang and Chaohe Chen

Pages:

931-934

DOI:

10.4028/www.scientific.net/AMR.250-253.931

Citation:

H. J. Zhao et al., "Effect on Structure and Early Hydration Activity of Steel Slag Modified by Adjusting Materials and Temperature", Advanced Materials Research, Vols. 250-253, pp. 931-934, 2011

Online since:

May 2011

Export:

Price:

$38.00

[1] C.J. Shi, Steel slag-its production, processing, characteristics, and cementitious properties, J. Mater. Civil. Eng. Vol. 16 (2004), p.230–236.

[2] J. Geseler. Use of steelworks slag in Europe. Waste Management, Vol. 16(1996), pp.59-63.

[3] H. Motz, J. Geiseler. Products of steel slag an opportunity to save natural resources. Waste Manage, Vol. 21 (2001), p.285–293.

DOI: 10.1016/s0956-053x(00)00102-1

[4] X.Q. Wu, H. Zhu, X.K. Hou, et al. Study on steel slag and fly ash composite Portland cement. Cement and Concrete Research, VOl. 29 (1999), pp.1103-1106.

DOI: 10.1016/s0008-8846(98)00244-0

[5] X.X. Wang, H.W. Zou. Prospect and state of recycling of molten steel slag's heat energy Jounal Ferro-Alloys(in Chinese), 2007, pp.34-36.

[6] Z.J. Wang. Cement produced by modification of molten steel slag. Jounal Anshan steel technology (in Chinese), 1991, pp.22-27.

In order to see related information, you need to Login.