The effectiveness of ALP-FIX MICROFIBRE 30 as antispalling admixture in concrete is show the results of fire test according to directive “Inner Shell Concrete” (Innenschalenbeton) – Austrian Society for Concrete and Construction, (Österreichische Vereinigung für Beton- und Bautechnik) ed. 2003
Conditions of the test:
Two concrete blocks with 2 kg/m³ MICROFIBRE 30, 6 mm length have been exposed to fire following the RWS temperature curve for 120 min.
The applied concrete – C25 | 30 (56) RRS/W40/ , W/C= 0,53, spread slump = 530 mm and air content 6,50% ( Vol.) was reinforced with BST550/ST and 1570/1770 steel rods coverage 40 mm.
No spalling on the fire side of the concrete block according to the requirements of the of the directive “Inner Shell Concrete” of Österreichische Vereinigung für Beton- und Bautechnik ed. 2003 what corresponds to the rating: Fire Resistance Class BB2G.