J. Paya et al., EARLY-STRENGTH DEVELOPMENT OF PORTLAND-CEMENT MORTARS CONTAINING AIR CLASSIFIED FLY ASHES, Cement and concrete research, 25(2), 1995, pp. 449-456
Citations number
13
Categorie Soggetti
Construcion & Building Technology","Material Science
A study of the effect of different fly ash sized fractions on compress
ive and flexural strength of blended cement mortar is presented. Morta
rs containing fly ashes, replacing 15 to 60% of Portland cement, were
prepared, and compressive and flexural strengths compared with ''only
cement'' mortar. The influence of curing temperature was also studied.
The study reveals that: a) compressive and flexural strength for mort
ars containing fly ash (or their sized fractions) are significantly en
hanced when curing temperature is raised; b) the content of fly ash fi
nest particles (less than 10 mu m) is a crucial parameter for yielding
a compressive strength enhancement; c) Good correlations between stre
ngths and particle mean diameters were observed when fly ash percentag
e of substitution was 60%.