This paper discusses the state-of-the-art of fine recycled concrete aggregates (fRCA), focusing on their physical and chemical properties, engineering properties durability concretes with fRCA. Based systematic review published literature, it is impossible to deduce without any further research guidelines tools introduce widespread application fRCA in new whilst keeping cement contents at least...

Abstract The structure and behaviour of two gypsum composites after exposition to elevated temperatures were investigated. silica sand fine basalt aggregate used as solid fillers. changes in composition at from 50 1,000°C investigated by scanning electron microscopy X-ray diffraction together with the size strength samples their pore distribution. matrix changed significantly both composites, w...

Internal sulfate attack can be caused by the gypsum residues present in fine recycled aggregates (FRA). As opposed to better known external or Delayed Ettringite Formation (DEF), sulfates this context are provided a contamination of aggregates. Mortars made with contaminated FRA were subjected different conditions, assess which parameters had an influence on reaction. Their mechanical propertie...

This study assesses the impacts of recycling waste polyethylene terephthalate (PET) plastic bottles as a partial substitute for fine natural aggregates on workability, mechanical, microstructural, economic, and thermal properties concrete. The mix design adopts concrete ratio 1:2:4 grade M25, 0.55 water/cement ratio, ordinary Portland cement (OPC) binder, varying proportions heat-processed PET ...