Reuse of storage loss: interlocked blocks using self-compacting concrete with addition of ceramic by-product fines

ABSTRACT

This research evaluated the advantages and disadvantages of replacing sand with ceramic waste in self-compacting concrete for interlocking blocks production. The by-product was obtained in a warehouse of a commercial store dedicated to civil construction in the city of Maceió-Brazil and processed in ball mills in the laboratory. The material was characterized by X-Ray Fluorescence and X-ray Diffraction and its particle size was evaluated. The particulate was incorporated into experimental compositions of 1:3 and 1:4 (cement/aggregate) and compared with the reference mix without ceramic by-product. The evaluation of the behavior of fresh mix was carried out using the Slump flow, L-box and V funnel tests. Posteriorly, the hardened mass was evaluated by water absorption and compression resistance tests. The fracture surface of the specimens was investigated by Scanning Electron Microscopy for understanding the microstructural arrangement. The study ended with the production of interlocking blocks with three validated compositions, with substitutions of 5%, 10% and 15% in the 1:3 mix. The results showed the technical feasibility of formulations with replacement percentages of up to 15% in the 1:3 mix (cement/aggregate) and add to efforts that seek cleaner production with a focus on the reuse of resources that become waste.

Keywords:
Sustainable concrete; Ceramics waste; Reuse