Title:
Effect of Curing Regime on the Properties of Fly-Ash Concrete
Author(s):
M. K. Gopalan and M. N. Haque
Publication:
Materials Journal
Volume:
84
Issue:
1
Appears on pages(s):
14-19
Keywords:
compressive strength; concretes; curing; drying shrinkage; flexural strength; fly ash; optimization; Materials Research
DOI:
10.14359/1934
Date:
1/1/1987
Abstract:
Reports on the compressive and flexural strength of normal and fly-ash concretes cured in a fog room and in an uncontrolled environment. Three classes of plain concrete with water-cement ratio varying from 0.33 to 0.47 were used. The fly ash content of the modified mixes ranged from 20 to 50 percent by volume of the total cementitious material. The drying shrinkage characteristics of these concretes are also presented. The curing conditions influenced the compressive strength of the concretes significantly; the 91-day air-cured strength was less than the 7-day fog-cured strength. The ratio of the control to fly ash strength increased with age and the fly ash-cementitious ratio. Poor curing is concluded to be more detrimental to the compressive strength development of fly ash concrete as compared to normal concrete.