Effects of Curing and Drying Enviroments on Splitting Tensile Strength of Concrete

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Title: Effects of Curing and Drying Enviroments on Splitting Tensile Strength of Concrete

Author(s): J. A. Hanson

Publication: Journal Proceedings

Volume: 65

Issue: 7

Appears on pages(s): 535-543

Keywords: age-strength relation;compressive strength;concretes;curing;drying;drying shrinkage;expanded shale aggregates;fine aggregates;gravel (material); humidity;lightweight aggregates;moist curing;moisture content;Monfor relative humidity probe;research;sand.

Date: 7/1/1968

Abstract:
The splitting tensile strengths of lightweight and normal weight concretes were investigated in two test series which dealt with the effects of the curing and drying environments. The first series showed that the duration of the initial moist curing period prior to drying at 50 percent relative humidity had little effect on the splitting tensile strength. While there was a loss of splitting strength for the lightweight concrete early in the drying periods, continued storage in the drying atmosphere led to considerable gain in the splitting strengths. In the second series, concretes were subjected to drying for 21 days at different levels of relative humidity after initial moist curing for 7 days. Only minor changes of splitting strength were found as the relative humidity varied from 75 to 10 percent.