STUDY OF THE USE OF PHOSPHO-GYPSUM AS AN ADHESION AGENT AND ACCELERATOR FOR POZZOLAN MATERIALS

ETUDE DE L'UTILISATION DU PHOSPHOGYPSE COMME ACTIVANT ET ACCELERATEUR DE DURCISSEMENT DES MATERIAUX POUZZOLANIQUES

THE OBJECT OF THIS INVESTIGATION IS TO STUDY THE POSSIBILITY OF USING PHOSPHO-GYPSUM AS AN ADHESION AGENT FOR POZZOLAN MATERIALS. THE INVESTIGATION WILL CONSIST OF: (1) A STUDY OF ACTIVATION PROCESSES (KINETICS, IDENTIFICATION OF CRYSTALLIZATION PRODUCTS), (2) A STUDY OF THE LONG-TERM MECHANICAL BEHAVIOUR AND LAYING BEHAVIOUR OF THE MATERIALS STABILIZED WITH POZZOLAN BINDERS ACTIVATED WITH PHOSPHO-GYPSUM, (3) APPLICATION TO GRAVEL-SLAG MIXTURES AND FLY-ASH-LIME-GYPSUM MIXTURES, AND (4) ECONOMIC STUDIES.