ISSN: 0149-6123
Page Count: 8

The Effect of Mix Design on the Properties of Sulfur Concrete
Czarnecki, B
Research associate and professor, The University of Calgary, Alberta

Gillott, JE
Research associate and professor, The University of Calgary, Alberta

Abstract

Some sulfur concretes have been shown to expand excessively under moist conditions. The deterioration is accompanied by a decrease in dynamic modulus of elasticity with time. The durability of sulfur concretes containing glycerin and crude oil admixtures was slightly improved, but expansions were still unacceptably high. Two silane admixtures significantly decreased the moisture expansions. Silane type A was more effective when larger amounts were used, but differences in amount of silane type Z had little effect on amount of expansion. Silanes also improved the durability of sulfur concrete when assessed by the dynamic modulus of elasticity, which generally remained at the same level during water immersion. It is concluded that by changing the surface characteristics at the aggregate-sulfur interface silanes minimize the detrimental effects of moisture.

Keywords:
sulfur concrete, silane admixtures, glycerin admixture, mix design, moisture expansion of sulfur concrete, dynamic modulus of elasticity

Paper ID: CCA10275J
DOI: 10.1520/CCA10275J
ASTM International is a member of CrossRef.