Test Value Obtained Standard Deviation Reference standards Apparent dry density 2.628 kg/m3 10 ASTM C-97; ABNT-NBR 12766/92 Apparent porosity 0,48 % 0,02 ASTM C-97; ABNT-NBR 12766/92 Water absorption 0,18 % 0,01 ASTM C-97; ABNT-NBR 12766/92 Abrasion wear (Amsler) 0,48 mm (500 m)1,20 mm (1000 m) - ABNT-NBR 12042/90 Linear thermal dilation coefficient 6,7 x 10-3mm/m