Finely Ground Sand Fraction of Concrete Rubble as a Supplementary Cementitious Material

Abstract

The fulfilment of the needs of modern society — not only at present, but also for future generations — is a basic principle which underlies the idea of sustainable development. German legislation on recycling economics and waste disposal [1] is thus based primarily on the principle of waste avoidance, where the reduction of the amount and detrimental effects of waste are paramount. Secondary to this, is the use of waste as a material or for energy production. In the building industry, this entails the development and realisation of material cycles. By reusing construction materials at a qualitatively equivalent level, the volume of waste production is reduced and natural resources are conserved. Cost-effectiveness and the advantages gained by using the material are decisive for the applicability of the recycled material.