Production Related Aspects of Self-Consolidating Concrete

BARRAGÁN, B.; ZERBINO, R.; GARCÍA, T.; AGULLÓ, L.; GETTU, R.

Chicago, USA

Congreso; SCC 2008- Third North American Conference on the Design and Use of Self-Consolidating Concrete; 2008

Center for Advanced Cement-Based Materials de la Northwestern University

The environmental conditions produce variations of the fresh properties of conventional as well as self-consolidating concrete (SCC) and, consequently, affect the material quality during production. Though the characteristics of SCC in the fresh state are generally evaluated through engineering-type tests, rheological studies with viscometers permit a deeper comprehension of its behavior. This work resumes an exhaustive experimental program aiming to evaluate the influence of temperature (from 10 to 40ºC), time (up to more than 1 hour after fabrication) and waiting conditions (stationary or periodically remixed) on the properties of SCC, rheological measurements through a BML viscometer, and slump-flow and V-funnel tests were performed. The results allow concluding that the attention to such production conditions cannot be minimized.