The effects of prolonged vibration on concrete

Abstract

It is well known that all concrete requires a proper degree of consolidation yet even so, this is often not carried out well. This could be perceived in the lack of recent material that illustrates detailed explanation on the notion of consolidation. Unfortunately, even a less research can be found on the effects which prolonged vibration has on the fresh concrete and subsequently on the final hardened concrete. The objective of the study is to investigate the effects of different periods of vibration, in fresh concrete, on the surface finish achieved, density, and any strength variations that could occur in the depth of cast of concrete columns. In addition, the latter were compared to the results attained for normally vibrated columns. The experimental study also highlighted the influence which the type of slump has on both the amount of vibration needed for the achievement of proper consolidation and the effects of prolonged vibration.