Non-Destructive Testing of Recycled Aggregate Concrete

Central Europe towards Sustainable Building

生态环境科学

Sierens, Z.^1 ; Vandevyvere, B.^1 ; Kyndt, L.^1 ; Tytens, G.^1 ; Li, J.^1

KU Leuven, Technology Campus Bruges, Faculty of Engineering Technology, Department of Civil Engineering Technology Cluster Construction, Spoorwegstraat 12, Bruges

8200, Belgium^1

关键词: Dynamic elastic moduli;    Mechanical and durability properties;    Non destructive testing;    Recycled aggregate concrete;    Recycled concrete aggregates;    Resonance frequencies;    Static elastic modulus;    Ultrasonic-pulse wave;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/290/1/012032/pdf
DOI  :  10.1088/1755-1315/290/1/012032

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

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 ultrasonic pulse waves and resonance frequency. Nevertheless, a study to transfer this knowledge into practice will demonstrate the applicability of the results.