A method for determining the consistency of concrete and related the concrete

摘要

Methods are known in which the consistency of the concrete to be mixed is determined by means of the power consumption of the rotating mixing drum. In this case, the inside of the mixing drum acts as a resistance surface opposed to the movement, but at the same time the effective resistance surface varies as a function of the degree of filling and the respective position of the mixing drum with respect to the horizontal. The consistency measurement is therefore inexact. …??The method according to the invention therefore provides that, to determine the consistency of the concrete, a baffle is immersed in the concrete, is moved with respect to the concrete throughout the entire measurement phase and measures its flow resistance. The baffle always presents a defined resistance surface to the concrete, so that the measurements are largely independent of interfering factors. …??The method is used to adjust the consistency of concrete in so- called ready-mix concrete vehicles. …IMAGE…