QUANTITATIVE EVALUATION OF THE PREVENTIVE EFFECTS OF MINERAL ADMIXTURES AND SURFACE COATING MATERIALS ON CONCRETE STRUCTURES AGAINST CHLORIDE ATTACK

Abstract

The preventive effects of mineral admixtures and concrete surface coatings against chloride attack is reported. Concretes of high, low and medium water to binder ratio, with and without mineral admixtures, or with and without a protected surface coatings were designed. Reinforced concrete slab specimens were subjected up to 70 cycles of wetting and drying by ponding 4.0% sodium chloride solution and drying in atmospheric air. And, a literature survey was conducted. As a result, it can be said that the service life of concrete structures incorpolating mineral admixtures or protected with surface coating materials becomes significantly longer than that of the structures made of plain concretes when exposed to chloride environments.