DEVELOPMENT OF ANEW INDUSTRIAL X-RAY CT SYSTEM AND ITS APPLICATION TO COMPRESSION TEST OF POLYMER CONCRETE

Abstract

 X-ray CT is a powerful tool to examine the fracture behavior of the construction material, because X-ray CT can measure three dimensional interior of a material without any intrusion into the material. However, it is difficult for the standard industrial X-ray CT system to measure the three dimensional interior of the construction material under a heavy load condition which usually act on the material. We have developed a new industrial X-ray CT system which can measure three dimensional interior of the construction material under 300kN compression load condition. The developed X-ray CT system is the Amsler type testing system in which the X-ray tube and the imaging sensor rotate around the test specimen. The developed X-ray CT system was applied to the compression test of the polymer concrete. And the internal behavior of the polymer concrete under compression conditions is analyzed by the image processing technique and the particle image velocimetry. The results indicate that the cracks of the coarse aggregate are generated by a localized compression of polymer