Cemfree – the development of sustainable non-Portland cement based concretes.

This paper presents a hydraulically active binder that is a sustainable and environmentally responsible alternative to Portland cement. In addition it addresses the problems of transferring an innovation into adopted best practice and presents possible solutions. The paper reports on both laboratory and site trial investigations into Cemfree with strength values and characteristics of practical relevance. Performance characteristics are presented and the indications are that those concretes, based on Cemfree, are of similar or better performance than their Portland cement (PC) equivalents. Cemfree is an innovation and as such has to become accepted by and integrated into best practice. The options available are described and their relevance to all innovations in the construction materials sector are discussed.

Author: P.C. Hewlett, M. Liska

Section: Concrete

Keywords: concretes, activator, slag, performance, carbon, superplasticisers.