The Mechanical and Electrical Properties of the Smart Aggregate Based on the Mixed Cementitious Materials

Cement and resin were designed as mixed cementitious materials to study the smart aggregate(SA) of smart concrete. Carbon fiber(CF) and surfactant were taken into consideration to adjust the mechanical and electrical properties of smart aggregate(SA) in this issue. The experimental results indicate that the flexibility and mechanical properties of SA can be improved by using such mixed cementitious materials. It is shows that, although the compressive strength and flexural strength can be enhanced effectively by using resin and CF, the electrical conductivity decreases significantly, which is because the water molecules are difficult to penetrate through the mixture materials so the hydration reaction of cement can not fully carry out. However, the electrical conductivity can be improved by adding the surfactant, and the strength and mechanical electrical properties can be adjusted effectively by the surfactant.