The effects of temperature on compressive strength of rapid setting concrete

Abstract

Rapid setting concrete using Calcium Sulfoaluminate (CSA) cement has been around since the 1960's to meet the need for construction projects with limited time frames. These projects range from quick foundation work to rapid highway repair. However, little research has been done on CSA cement; specifically, there have been few studies on the effects of temperature on the compressive strength and workability of this type of cement. This study examines the mixing and curing temperature aspects of CSA rapid setting concrete. By controlling the batching and curing temperature independently, we can see what effect each has on both the early and late age strength properties. A study of past research on the subject will provide a starting point for the investigation. A set of laboratory experiments conducted under controlled conditions will provide data for analysis and conclusions. The four main objectives of this study are: develop a catalog of variables and characteristics relevant to rapid setting concrete; create mix designs based around the above variables and form samples for testing; measure the compressive strength, slump, air content and other characteristics of each mix; compile and compare the results obtained and present the best possible combination for overall strength and workability. This research will provide insight into the effects of temperature on the properties of CSA rapid setting cements.