In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 633 ( 2014-11), p. 240-244
Abstract:
Granulated blast furnace slag (GBFS) is a by-product of manufacturing iron. Samples of GBFS with different ratio of SiO 2 /Al 2 O 3 were prepared by simulating the actual process of GBFS in laboratory. This study investigated the influence of SiO 2 /Al 2 O 3 content on structure and hydration activity of GBFS which were characterized by X-ray fluorescence (XRF), powder X-ray diffraction (XRD), infrared radiation (IR) and mechanical testing. It is found that the vitreous content of each sample is above 97% and the hydration activity indexes of 7d and 28d of samples significantly decrease with the increase of SiO 2 /Al 2 O 3 ratio. The IR characteristic absorption spectrum shows that the silicates mainly exist in [SiO 4 ]-tetrahedra and the aluminum atoms are in different coordination states and the bonding strengths rise with the increase of SiO 2 /Al 2 O 3 ratio.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.633
DOI:
10.4028/www.scientific.net/KEM.633.240
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2014
detail.hit.zdb_id:
2073306-9