DETECTION AND PROPORTIONING OF ADMIXTURES IN CONCRETE

DETECTION ET DOSAGE DES ADJUVANTS DANS LES BETONS

THE AIM OF THE RESEARCH IS TO SHOW THE PRESENCE OF ADMIXTURES IN HARDENED CONCRETE AND, IF POSSIBLE, TO DETERMINE THEIR PROPORTION. EXISTING METHODS ARE LONG AND INACCURATE, AND REQUIRE THE PRELIMINARY EXTRACTION OF THE PRODUCTS SOUGHT; THEIR PROPORTIONING NECESSITATES THE PREPARATION OF SAMPLES MADE WITH THE SAME INGREDIENTS AS THOSE CONTAINED IN THE CONCRETE STUDIED. A STUDY WILL BE CONDUCTED OF THE POSSIBILITY OF PROPORTIONING PLASTICIZERS AND RETARDERS BY ELIMINATING THE NEED FOR A CALIBRATION CURVE. AN ATTEMPT WILL BE MADE TO SOLVE THE PROBLEM BY MEANS OF CHEMICAL TRACERS.