MODELLING OF FLUID CONCRETES BY EXPERIMENTAL DESIGNS

Material Science

The classical approach to concrete formulations often consists of varying the parameters of the mixture and measuring its effects on the behavior of the concrete in both fresh and hardened states. This is a very time-consuming process and is the result of somewhat more limited information on concrete. For this purpose, an experimental model has been envisaged to give very precise information on fluid concretes. This model is based on experimental designs whose aim is to model them mathematically in order to evaluate the influence of its parameters and interactions. The study ranges of the different parameters such as G/S ratio, W/C ratio and superplasticizer dosing have already been determined from our engineering thesis and DEA (Diploma of Advanced Studies) work. Formulations from an experiment matrix or HARDMAN matrix have been carried out in order to estimate the slump and the mechanical compressive strength of concrete. Water dosage (E), cement dosage (C), superplasticizer dosages (Sika Viscocrete Tempo 12 and Rheobuild 561) and filler dosages (Filler Cipolin and Filler Dolomite), all per unit volume of the mixture in the fresh state are the factors considered. Statistical tools are used in order to verify or make a decision on the formulations and on our assumptions of the mathematical models.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.