Evaluation of compressive and splitting tensile strength of concrete with recycled aggregate. A case study

An increased interest in producing concrete using recycled aggregate has been reportedby researchers. Reduction of using raw materials, reduction of transportation costs andreduction of environmental impact have forced the use of recycling materials. To be ableto conserve conventional natural aggregate and sustainability the main objective of thisstudy is to evaluate the impact of replacing natural fine and coarse aggregates on ۷-, ۲۸-day compressive strength and splitting tensile strength of concrete by using waste crushedconcrete cubes samples. With this aim, three grads of concrete C۱۰, C۱۵, and C۲۰ wereinvestigated by replacing natural aggregate with recycled fine and coarse by the portionsof ۱۰۰ % mixes. The results showed ۱۱ to ۶۶% higher compressive strength than thedesigned grade. The ratio of splitting tensile strength to compressive strength increasewith an increase in compressive strength. Further experiments are needed, using theseconcretes for building material.

کلیدواژه ها:

Compressive Strength ، Split Tensile Strength ، Concrete ، Aggregate ، Recycled ، sustainability