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Research on Properties and Reaction Mechanism of Blast Furnace Slag Backfilling Cementing Material

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Abstract:

According to XRD, DTA and SEM detections, the hydration products of blast furnace slag based cementing material SL, SLG. were studied in different age periods. The XRD analysis of cementing material SL hydration products showed the composition of hydration products were mainly amorphous substances, few crystalline substances. Characteristic peak of ettringite, such as AFt, hadn’t been found in the spectral line of DTA, and it hadn’t been found in the figures of SEM, either, which was accordant with the conclusion that the cementing performance of SL mainly coming from gel of hydrated calcium silicate (CSH) and hydrated calcium aluminate. But the cementing performance of SLG mainly coming from Aft, CSH and AFm from hydration products analysis of different age periods.

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Proceedings of 2014 International Conference on Material Engineering and Environment Science View Preview

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Periodical:

Applied Mechanics and Materials (Volume 692)

Pages:

454-459

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.692.454

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Online since:

November 2014

Authors:

Shu Gang Hu*, Xian Jun Lu, Hai Li Niu

Keywords:

Backfilling Cementation Material, Blast Furnace Slag, Hydration Products, Properties, Reaction Mechanism

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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