Flexure and Compression Tests of High Strength, Air-Entrained Slag Concrete
Earl W. Fowler and D. W. Lewis
Appears on pages(s):
Tests were conducted to evaluate the effect of increased cement contents, decreased slumps, and use of water-reducing admixtures on the strength of air-entrained concrete made with air-cooled, blast-furnace slag aggregate. Results obtained show that both increased cement content and decreased slump (compared to mixes ordinarily used) result in large increases in flexural strength of pavingconcretes and in compressive strength of structural concretes. An admixture of the hydroxy-carboxylic acid type was effective in increasing strengths of the slag mixes and appeared to have the greatest influence on compressive strength and in the richer mixes. Data on drying shrinkage, tensile splitting strengths, and moduli of elasticity were obtained for part of the tests and limited studies of the effects of aggregate size and type of aggregate were included.