In this study, the possible correlation between impurities presented in the crystalline compounds of the coprocessed clinkers and their breakage strength (determined by Drop Weigth Tester-DWT) is verified. This latter is used to predict the grindability of these materials by providing the impact parameter (A.b). The higher the impact parameter is, the lower the breakage strength is. For the tested clinkers, the average content (wt. %) of impurities in the crystallized phases, including alkalies, barium, strontium, manganese and titanium was determined. For this, microanalysis with an EDX (Energy Dispersive X-Ray) system coupled to the SEM (Scanning Electron Microscopy) was used. The statiscal analysis of the chemical results suggests a strong correlation between the impurities and impact parameter.
Clinker; cement; grinding; DWT
