Non-destructive testing of recycled aggregate concrete

Currently, recycled aggregate concrete is a widely used building material. Due to negative influences on concrete’s mechanical properties, it is mostly used in low-valued applications. Nevertheless, high quality recycled concrete aggregates derived from a good quality original concrete can be used in high-valued applications, such as precast concrete. These high quality aggregates can be obtained by optimizing the crushing process. To ensure recycled aggregate concrete quality, the influence of different parameters on its mechanical and durability properties must be established. The quality of recycled concrete in high-valued applications can easily be measured via non-destructive tests. In this research project, the properties of recycled aggregate concrete are tested in a non-destructive way in order to establish a correlation between the different properties. Results of several laboratory tests show a good relation between the static elastic modulus and the dynamic elastic modulus, calculated by measuring the ultrasonicpulse waves and resonance frequency. Nevertheless, a study to transfer this knowledge into practice will demonstrate the applicability of the results.

Jaar van publicatie:2019