CEMENT

Description

Grey Portland cement for construction grade *2.5 R as our following specification chemical composition: Portland cement Type I or 2 *2.5 R according to BS *2 / ***6 or ASTM - C **0 Silicon dioxide *0, 5 % minimum Aluminium Oxide ( Al2O3 4, 3 % to 6, 0 % maximum Iron oxide ( Fe 2O3 ) 3, 8 % to 6, 0 % maximum Calcium Oxide ( CaO ) *2, 2 % to *7, 0 % maximum Magnesium Oxide ( MgO ) 1, *0 % minimum Sulfur trioxide ( SO3 ) 2, 7 % ASTM C **3 optimum 3, 0 % maximum Loss on Ignition 1, *0 % to 3, 0 % maximum Insoluble Residue 0, 2 % to 0, *5 % maximum Alkalies as Na 2O 0, *5 % to 0, 6 % Tricalcium Silicate ( C3S ) 8, 0 % to 9, 8 % maximum PHYSICAL ANALYSIS Blaine surface, m2/kg **0 to **0 % passing **5 mesh sieve *5, 1 to *3, 5 Vicat Set, minutes Initial **5 not less than *5 Not more than **5 Final **5 Air content 7, 7 % *2 % maximum Autoclave Expansion 0, *2 % to 0, 8 % minimum Compression Strenght, ***** ( Mpa ) 1 day ***0 ( *6, 8 ) > ***0 3 days **0 KG / CM2 7 days **5 KG / MC2 *8 days **0 KG /CM2 SPECIFICATIONS OF CEMENT : *2.5 N ORIGIN : RUSSIA / UKRAINE / INDONESIA / SOUTH AMERICA Grey Portland Cement for construction grade *2.5 N as our following specification Chemical composition : Portland cement Type I or 2 , *2.5 N according to BS *2 /***6 or ASTM - C **0 Silicon dioxide ( sio2 ) : *1.*0 Aluminium Oxide ( a*2o3 ) :5.*0 Ferric oxide ( fe2o3 ) : 3.*0 Calcium Oxide ( cao ) : *5.*0 Magnerium Oxide ( mgo ) : 1.*0 Sulphur trioxide ( so3 ) : 2.*0 Loss of ignition ( loi ) : 0.*0 Tricalcium silicate ( c3s ) : *0.*0 Dicalcium silicate ( c2s ) : *5.*0 Tricalcium aluminate ( c3a ) : 8.*5 Tricalcium alumino ferric ( c4af ) : 9.*6 PHYSICAL AND MECHANICAL PROPERTIES Blain cm2/gr : 3.**0 Autoclave expansion : 0.*2 Initial setting time ( vicat ) : **5 minutes Final setting time ( vicat ) : **5 minutes Compressive *@********************