CONCRETE WITH INORGANIC, RESIDUAL PRODUCTS

This paper describes a part of the work in the Centre for Resource Saving Concrete Structures focused at developing green concrete with the use of inorganic residual products as a substitute for either the cement or the sand. The products investigated are: Stone dust, concrete slurry, slurry from waste combustion, smoke waste from waste combustion, and flyash from sugar production. Key words: Green concrete, residual products, stone dust, flyash, slurry, smoke waste. 1. RELATION TO CENTRE FOR RESOURCE SAVING CONCRETE STRUCTURES This paper describes a part of the work in the Centre for Resource Saving Concrete Structures also known as “Green Concrete”. The most important goals of this centre is to develop the technology necessary to produce resource saving concrete structures by means of new binder types in new types of concrete combined with a possible reuse of residual materials. The centre is more thoroughly described in (1). 2. DIFFERENT WAYS TO PRODUCE GREEN CONCRETE In the various development projects in the centre, green concrete is examined in three different ways, (2): U1: Concrete with minimal clinker content. U2: Concrete with green types of cements and binders. U3: Concrete with inorganic, residual products. This paper focuses mainly on the 3rd option. Nevertheless, the following Figure 1 is included to give an overview of the total concrete developments in the centre. 14 types of concrete Residual products from other industries, not formerly used in concrete • Slurry from waste combustion • Smoke waste from waste combustion • FA from sugar productio