X-ray computer tomographic analysis of four concrete specimens based on steel-making slag and artificial dense aggregates

Visualization of the internal structure, evaluation of the structure and basic analysis of porosity on four concrete test specimens were carried out. The non-destructive method of industry 3D X-ray computed tomography was used for the analysis of the test specimens. Based on the CT slices of individual the specimens of concrete, the four basic components of concrete were identified (i) cement binder, ii) fraction formed by steel-making slag, iii) fraction formed by artificial dense aggregate, iv) the last component of concrete is represented by pores). The carried out CT porosity analysis determined the average porosity of the investigated concrete at the level of 6.5 ± 1.52%