Evaluation of Several Types of Curing and Protective Materials for Concrete. Part IV. Final Report on Performance.

摘要

Various curing and/or protective coatings were evaluated under three conditions: (1) Accelerated laboratory freezing and thawing of specimens in 2percent sodium chloride solutions, (2) exposure in an outdoor area of slabs subjected to controlled application of deicers,and (3) exposure of some of the materials on three interstate bridges for five winters. It is concluded that -- (1) properly entrained air is overwhelmingly the most effective defense against scaling; (2) when insufficient entrained air is obtained,linseed oil treatments delay the onset of scaling but do not prevent it; (3) materials intended to cure and protect in a single application are not effective;and, (4) linseed oil treatments applied after curing with membrane curing are effective without prior removal of the curing compound.