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Investigation on Recycled Cement Based on Waste Concrete

Lin, Zong-Shou / Chong, Yan

Adding part of granulated blast furnace slag(GBFS), steel salg(SS), Desulfurization gypsum(DG), we can use Waste Cencrete(WC)as the main raw materials to directly produce uncalcined cement by grinding. With mix proportion 40%~50% of WC and curing in water, the 3d compressive strength of the cement can reach 10MPa., the 28d compressive strength of the cement can reach 20~40MPa. XRD and SEM analysis show that, the hydration products of the cement are ettringite and C-S-H gel. Parts of WC involves in the hydration reaction, residual WC is wrapped by the hydration product as aggregate filler.

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Investigation on Recycled Cement Based on Waste Concrete

Lin, Zong-Shou / Chong, Yan

Adding part of granulated blast furnace slag(GBFS), steel salg(SS), Desulfurization gypsum(DG), we can use Waste Cencrete(WC)as the main raw materials to directly produce uncalcined cement by grinding. With mix proportion 40%~50% of WC and curing in water, the 3d compressive strength of the cement can reach 10MPa., the 28d compressive strength of the cement can reach 20~40MPa. XRD and SEM analysis show that, the hydration products of the cement are ettringite and C-S-H gel. Parts of WC involves in the hydration reaction, residual WC is wrapped by the hydration product as aggregate filler.

Investigation on Recycled Cement Based on Waste Concrete

Lin, Zong-Shou / Chong, Yan

Adding part of granulated blast furnace slag(GBFS), steel salg(SS), Desulfurization gypsum(DG), we can use Waste Cencrete(WC)as the main raw materials to directly produce uncalcined cement by grinding. With mix proportion 40%~50% of WC and curing in water, the 3d compressive strength of the cement can reach 10MPa., the 28d compressive strength of the cement can reach 20~40MPa. XRD and SEM analysis show that, the hydration products of the cement are ettringite and C-S-H gel. Parts of WC involves in the hydration reaction, residual WC is wrapped by the hydration product as aggregate filler.

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Title:

Investigation on Recycled Cement Based on Waste Concrete

Contributors:

Lin, Zong-Shou (author) / Chong, Yan (author)

Published in:

Green Building Materials III, GBM, Mainland, Taiwan and Hong Kong Conference on Green Building Materials, 3 ; 40-44

Key Engineering Materials ; 509

Publication date:

2012

Size:

5 Seiten

ISSN:

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.509.40

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Hydratation , Gips , Rohstoff , Entschwefelung , Druckfestigkeit , Granulat , Anbauteil , Hochofenschlacke , Ettringit

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