Study of Limestone Addition on the Mechanical and Rheological Characteristics in the SCC

The following research is a contribution to quantify the influence of limestone addition on the properties of the fresh and hardened concrete (SCC). For that purpose, several mixtures of SCC have been formulated and studied in laboratory. Fluidity, blocking and segregation were studied by varying the dosage of mineral additives. Then, the influence of granular skeleton G/S on the behaviour of the SCC was displayed. The characteristics of concretes made in the laboratory have been identified using tests recommended by the French Association of Civil Engineering (AFGC, 2008). In particular, slump flow test with and without Japanese ring, L box, test of stability to the sieve then the V-funnel test were conducted. In parallel, the cylindrical sample of 16×32cm was tested for each combination in order to follow the evolution of compressive strength at 28 days. The results obtained were treated by the analysis of variance (ANOVA) method using a commercial software (SPSS, ver. 17.0). We carried out this statistical analysis in order to determine the statistically significant factors. Several strong correlations were found.