by Andrew Dunster (22-Jan-2016)
The production of alkali-activated (AA) binders uses less energy and produces less carbon dioxide than conventional Portland cement (PC). These binders can also offer the concrete producer flexibility in raw materials sourcing and the opportunity to produce concrete products without using conventional cements. Although low-carbon concretes made from AA binders share some materials in common with conventional PC-based concretes, there are some significant differences in the supply chains and business models that apply to their manufacture and sale.
This Information Paper summarises the current position in this emerging area of construction technology. It draws on BRE’s expertise in the area and provides essential support for those involved in adopting and utilising these new binders. This publication is intended to inform purchasers and specifiers of concrete and concrete products and those with a wider interest in the procurement of sustainable construction products.
Supply chains and business models
-Established commercial model for Portland cement manufacturing (BS EN 197-1:2011)
-Binder model 1: the specialist binder supplier
-Binder model 2: the established precast concrete producer
Environmental benefits of AA binders
AA binder concretes at end of life