Title:
Compressive Strength of Silica Fume Concrete at Higher Temperatures
Author(s):
T. Kandra, F. Sakuramoto, and K. Suzuki
Publication:
Symposium Paper
Volume:
132
Issue:
Appears on pages(s):
1089-1104
Keywords:
admixtures; aggregates; compressive strength; temperature; heat of hydration; high-strength concretes; silica fume; curing; water-reducing agents; Materials Research
DOI:
10.14359/2423
Date:
5/1/1992
Abstract:
Compressive strength of concrete with silica fume cured at high temperatures generated by heat of hydration during early age was studied. The curing temperatures simulated the site-curing conditions of structural members. Four types of aggregates and four types of admixtures were used, and a total of seven concrete samples were cured at four temperature conditions ranging from 20 to 75 C. Results indicated the following: 1) at higher curing temperatures, the 1-week strength was higher but the strength gain from 1 to 4 weeks tended to be low; 2) independent of curing temperature, the type of aggregate greatly influenced the strength, and the results were the same with all the admixtures; 3) high-temperature curing influenced concrete strength independently of the admixture and aggregate; 4) equivalent age at 20 C based on the Arrhenius equation gave a reasonable estimation of compressive strength gain.