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Evaluation of use of SCC for hot weather applications


Concrete production optimization

 


In hot weather, concrete is subjected to continuous mixing and agitation for different periods of time during its hauling to construction sites. Assessing the quality of concrete under these harsh conditions is complicated. This study examines the common problems associated with hot weather concreting to emphasize the importance of designing concrete in hot countries. The main purpose of this study is to evaluate the use of self-consolidating concrete (SCC), as a viable material, to overcome these issues due to its high flowability, resistance to segregation, and reduced bleeding. A laboratory study examined the fresh and hardened properties of flowable concrete under hot weather conditions. The fresh properties include workability over time, rheological properties, and segregation resistance, while the hardened properties include the compressive strength. The results show that SCC can be used to address many of the problems associated with hot weather construction because of the inherent workability and resistance to segregation of this type of concrete. Furthermore, the data suggest that the use of SCC in hot weather applications can provide similar or improved hardened concrete properties to conventional concrete. However, some potential concerns for this material in hot weather applications include the general and overall lack of experience and research, lack of standardized tests, lack of well-defined mixture proportioning, and larger changes in workability compared to conventional concrete mixtures.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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