Exterior pavement, prefabricated concrete pieces

Exterior pavement, prefabricated concrete pieces, 20x20x6 cm, smooth finish, gray color, T class resistant to flexion, class resistant to breakage 4, class of abrasion wear H, according to UNE-EN 1339, with sliding resistance Rd>45 according to UNE-EN 16165 and slipperiness class 3 according to CTE, placed at an angle of pot with cement mortar M-5 of 3 cm thickness, leaving between them a separation joint of between 1.5 and 3 mm. Including structural joints and expansion joints, cuts to be made to adjust them to the edges of the confinement or to the existing intrusions in the pavement and filling of joints with silica sand of size 0/2 mm.