Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 23, Issue 7, Pages 2511-2517Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2009.02.002
Keywords
Concrete; Blast furnace slag; Blended cements; Alkaline activation; Strength; Microstructure
Categories
Funding
- Espinosa-Perez [39978]
Ask authors/readers for more resources
The cementitious performance of a coarse granulated blast furnace slag, 2900 cm(2)/g, was investigated in concretes of 230. 280 and 330 kg binder/m(3). First, the slag partially replaced 30%, 50% and 70% of Portland cement, the strength reduced as the amount Of slag increased; however, for high binder contents, similar strengths were attained for lower Portland cement contents. Second, the slag was alkali activated with sodium silicate (moduli 1.7 and 2) at 4%, 6% and 8% %Na2O, the strength increased with the amount of slag in the concrete and developed faster as %Na2O increased. The microstructures of both type of concretes were dense: however, the strengths of activated slag were superior at similar binder loads, indicating that the hydration products of activated slag are of higher intrinsic strength. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available