Self-compacting concrete obtained by the use of kaolin wastes

A self-compacting concrete (SCC) is characterized by its special capacity of filling ability, passing ability and resistance to segregation by the action of its own weight without the presence of other external forces. These fresh properties are obtained thanks to the use of filler, where the limestone one is mostly used. Numerous industries produce a great amount of solid wastes, some suitable for use as filler in the production of SCC. This study aimed to develop a SCC with inclusion of wastes from the manufacturing of kaolin, through an optimum dosage of kaolin wastes and superplasticizer (sp) which were well established from the experiments. The paste dosage was defined by Marsh funnel and mini-slump tests and fresh properties of concrete were measured by L box, U box, J ring, V funnel and Abrams cone. The use of kaolin wastes in SCC production is pioneering. The mix-design method used was successful and it was validated by the several fresh properties results which provided to the concrete a SCC characteristic flowing behavior. Finally, including industrial waste in SCC has brought significant environmental benefits.