micro-XRCT data set (projection and reconstructed images) of a Carrara marble core with a diameter of 5 mm. The sample was extracted with a water-cooled diamond drill from a bigger sample with a diameter of 30 mm and a length of 80 mm which was before subjected to following thermal treatment to initiate cracks:
Starting at room temperature (20°C) the sample was heated up with a rate of 3 K/min to 600°C. After a holding time of 2 hours at this temperature, the sample was subsequently quenched in water at room temperature (20°C).