X-RAY DIFFRACTION STUDY OF HYDRATION PROCESSES IN THE PORTLAND CEMENT

摘要

This paper presents a study performed on the Portland cement (CEM I 52,5) presented as powder and slurry to highlight the hydration occurring in the cement at various time intervals (1, 3, 7, 14 and 28 days), making use of the X-ray diffraction method. The diffraction spectra have identified the hydration products: portlandite, ettringite and tobermorite, as well as the mineralogical compounds still unhydrated as the hydration processes occur in time and at 28 days are still unfinished. The mechanical present a rising evolution also due to the hydration processes that continue to take place as time goes on.