Experimental Simulation of Self-Consolidating Concrete Formwork Pressure

Abstract

Developing a laboratory device to describe self-consolidating concrete's (SCC's) formwork pressure behavior was this investigation's aim. The cost and time needed for the same research to be conducted on real structures was reduced by the development of such an apparatus. Pressurizing a volume of material inside a cylinder and recording lateral pressure evolution allowed casting rate and mixture composition effects to be studied. There was simulation of two different casting rates and columns measuring 14 m (46 ft) in height. Four different water-binder (w/b) ratios and different binder compositions were used in mixture design. That less than hydrostatic formwork pressures were achievable was shown through results. Higher w/b and casting rates were associated with higher pressures. A casting rate of 7 m/hour (23 ft/hour) and a w/b of 0.32 was recorded for a formwork pressure reduction up to 50% of the hydrostatic value. That fly ash incorporation reduces SCC formwork pressure was also shown by data.