Evaluation of the Effectiveness of Curing of Concrete Structures

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Title: Evaluation of the Effectiveness of Curing of Concrete Structures

Author(s): K. Schonlin and H. K. Hilsdorf

Publication: Special Publication

Volume: 100

Issue:

Appears on pages(s): 207-226

Keywords: concrete durability; curing; evaluation; measurement; nondestructive tests; permeability; General

Date: 4/1/1987

Abstract:
A nondestructive rapid test method has been developed for the evaluation of the effectiveness of curing of concrete in the field. With this method, air permeability of concrete surface layers is measured within a period of about 10 minutes and is expressed in terms of a permeability index. Laboratory experiments show a close correlation between the measured permeability index and the duration of curing, curing temperature, type of cement, water-cement ratio, and fly-ash content of the concrete. The method is very sensitive to changes in most parameters that affect the pore structure of the hydrated cement paste and thus the durability of concrete structures under normal exposure conditions.