Alkali activation of Australian slag cements

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Cement and Concrete Research

DOI:https://doi.org/10.1016/S0008-8846(98)00170-7· OSTI ID:335222

Bakharev, T; Sanjayan, J G; Cheng, Y B ^[1]

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1. Monash Univ., Clayton, Victoria (Australia)

Investigation of alkali activation of Australian slag (AAS) was carried out using sodium silicate, sodium hydroxide, sodium carbonate, sodium phosphate, and combinations of these activators. Compressive strengths in the range from 20 to 40 MPa were achieved for the pastes. The most effective activator was liquid sodium silicate. With this activator, the effect of curing at 60 C, modulus (M{sub s}) of sodium silicate solution and concentration of alkalis on the compressive strength and setting times have been studied. On the basis of this investigation, a sodium silicate solution with a low Na content and M{sub s} = 0.75 is recommended for formulation of AAS concrete.

• OSTI ID: 335222
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 1 Vol. 29; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
AUSTRALIA
CEMENTS
CHEMICAL ACTIVATION
COMPRESSION STRENGTH
CURING
SHRINKAGE
SLAGS
SODIUM COMPOUNDS
WASTE PRODUCT UTILIZATION