A STUDY ON THE QUALITY AND PRODUCTION SYSTEM OF THE RECYCLED MORTAR(Materials and Construction)

Abstract

When a set-retarding agent and a superplasticizer are added, the returned concrete can be reused as a preceding mortar for concrete pumping constructions. The experimental study was performed aiming at the practical application of the recycled mortar. Laboratory tests to determine the dosage of the set-retarding agent and the superplasticizer as well as the quality of the recycled mortar were executed. Full-scale tests for the applicability of a wet-screening equipment at a ready-mixed concrete plant, and the quality and productivity of the recycled mortar manufactured with the full-scale equipment were studied.