Title: Creep af Fly Ash Concrete
Author(s): R. P. Lohtia, B. D. Nautiyal, and O. P. Jain
Publication: Journal Proceedings
Appears on pages(s): 469-472
Keywords: compressive strength: concretes: creep properties;creep recovery: fly ash; shrinkage: strains: stresses.
Test results of creep and creep recovery of plain and fly ash concrete mixes obtained by replacing cement with equal weight of fly ash in the range af 0 to 25 percent under stress strength ratios of 20 and 35 percent are given. The tests were made under controlled temperature (27 I- 2 C) and humidity (90 I 5 percent) conditions. Creep was measured on concrete cylinders 7.62 x 22.86 cm for I50 days. The creep behavior of fly ash concrete was observed to be similar to that of plain concrete. Creep strains for higher cement replacement beyond 15 percent were slightly higher. A I5 percent cement replacement with fly ash was found to be optimum, The probable creep mechanism for fly ash concrete is the same as that for plain concrete.