Portland Cement

SPECIFICATIONS

GREY PORTLAND CEMENT FOR CONSTRUCTION GRADE 42.5 According to British standards BS12/96 or ASTM C-150

CHEMICAL ANALYSIS

Formula 42.5 r Typical Analysis

SiO2 Silicon Dioxide 21 %

Al2O Aluminum Oxide 5.30 %

Fe2O3 Ferric Oxide 3.30 %

CaO Calcium Oxide 65.60 %

MgO Magnesium Oxide 1.10 %

SO3 Sulphur Trioxide 2.70 %

LOI Loss Of Ignition 0.90 %

C3A Tricalcium Aluminates 8.05 %

C3S Tricalcium Silicate 60.00 %

C2S Dicalcium Silicate 15.00 % C4AF

Tricalcium Alumino Ferric 9.76 %

PHYSICAL AND MECHANICAL PROPERTIES

Blain CM2/GR 3.250

Autoclave Expansion 0.02

Initial Setting Time (VICAT) 105 Minutes

Final Setting Time (VICAT) 135 Minutes

Compressive Strength

03 days - 230 KG/CM2

07 days 305 KG/CM2

28 days 420KG/CM2