Influence of Curing Conditions on Strength Properties and Maturity Development of Concrete.

摘要

In this study, the results of both laboratory studies and a field study, conducted to evaluate the effects of different curing conditions on the strength properties and maturity development of pavement concrete, are presented. Further, a laboratory study was performed to evaluate the maturity concept in relation to the degree of hydration of cement. Concrete specimens, beams and cylinders, were prepared in the field study. The specimens in the field were cured in one of four curing conditions: lime bath, sandpit, air, or by temperature match curing. Specimens were tested for flexural strength and compressive strength, respectively. The temperature of the specimens was recorded and maturity calculated for specimens as well as for the pavement in the field study. The results indicate that there is no difference between the maturity development of beam and cylinder specimens. Also, Curing of specimens in lime bath and in the sandpit produced specimens with similar flexural strengths. Further, specimens cured in the sandpit most closely match the maturity development in the pavement.