STUDY OF THE POZZOLAN CHARACTERISTICS OF VITREOUS ROCKS

ETUDE DE LA POUZZOLANICITE DES ROCHES VITREUSES

THE RESULTS OF INVESTIGATIONS INTO THE STABILIZATION OF GRAVEL WITH POZZOLAN-LIME BINDERS SHOW DIFFERENCES IN MECHANICAL PERFORMANCE WITH ROCKS VARYING IN NATURE, THUS APPEARS THAT SOME ROCKS, SUCH AS BASALT, HAVE A MORE OR LESS MARKED POZZOLANIC PROPERTY AND INFLUENCE THE SETTING PHENOMENON. IN 1976, IT IS ENVISAGED TO DEVELOP THE TECHNIQUE OF BASALT-LIME MIXTURES FOR ROADBASES: OBSERVATIONS ON A GRAVEL-BASALT-LIME EXPERIMENTAL SECTION BUILT IN 1975 IN THE DEPARTMENT OF THE PUY-DE-DOME WILL BE CONTINUED; STUDIES OF MIX-DESIGN AND SETTING MECHANISM OF BASALT-LIME MIXTURES WILL BE CONTINUED; AN EXPERIMENTAL SECTION WILL BE BUILT IN CORREZE IN COOPERATION WITH THE SETRA.