Investigation of freezing properties on compressive strength of concrete with fly ash and antifreeze admixtures

In this study, the influence of freezing on compressive strength of concrete with fly ash (FA) and antifreeze (AF) admixtures was investigated. For this purpose, FA was replaced by 15% and 30% weight of cement. In the concrete mixtures produced, w/c ratio and amount of cement, superplasticiser (SP) and AF were kept constant. After fresh concrete experiments were done on the concrete mixtures produced, cylinder concrete specimens of 10x20 cm size were obtained. Cylinder specimens were kept in standard curing environment until test day. Compressive strength and unit volume weight tests were carried out on the concrete specimens at 3, 7, 28 and 90-day ages. Test results obtained from concretes produced were compared with each other as well as with the values of control concrete. As a result, the best test results were obtained with 15% FA replacement concretes.