Overview of the effect of aggregates from recycled materials on thermal and physical properties of concrete

Abstract

The effect of adding different aggregates on thermal and mechanical properties of concrete is investigated. The materials used as aggregates are crushed rubber results from wasted tiers, recycled plastics, organic, and inorganic wastes. The mechanical and thermal properties of concert investigated are density, compressive strength, and thermal conductivity. Moreover, data of the drying rate of concrete with compressive strength are shown. The study shows a comparison between modified concrete and traditional one is shown. Results shown that rubberized concrete showed a drop in the compressive strength, thermal conductivity, and density. For example adding 10% of rubber aggregates the compressive strength dropped by 8 MPa for 7 days of drying and 10 MPa for 28 days of drying. The average reduction of thermal conductivity between the three mixes was 0.11W/m.K. The average decline in the concrete density between the three mixes was 122 kg/m3.

Keywords

• Crushed rubber
• Plastics
• Concrete
• Thermal conductivity
• Strength
• Recycled materials