Table 2.

Results of hard body impact resistance test, according to ETAG 004/2013 [16].

Set Number	Tests Results after
	Impact 3 Joule	Impact 10 Joule
Set I	no deterioration of 5 tested samples	➢Cavity without deterioration of 1 tested sample; ➢circular deterioration of 3 tested samples, diameters: 3.6 mm, 4.0 mm, 3.1 mm, ➢one crack length of 1 cm
Set II	no deterioration of 5 tested samples	no deterioration of 5 tested samples
Set III	no deterioration of 5 tested samples	➢Cavity without deterioration of 2 tested samples; ➢circular deterioration of 3 tested samples about diameters: 3.1 mm, 3.2 mm and 3.5 mm
Set IV	no deterioration of 5 tested samples	➢Cavity without deterioration of 3 tested samples; ➢circular deterioration of 2 tested samples about diameters: 3.1 mm, and 3.6 mm