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Portland cement and clinker

  • Brazil Brazil  
  • Last Updated:11 Mar 2014

RFQ Details

Authorised Representatives for cement allocation company seek direct contact with buyers or buyer mandates, to negotiate contracts for 2009 allocations. Quantities from 150, 000 MT per year upwards to 30 millions tons and more.

ORDINARY GREY PORTLAND CEMENT (*****) GRADE 42.5 STANDARD: "R" or "N"
TECHNICAL SPECIFICATIONS
Portland cement construction grade 42.5
ACCORDING TO BRITISH STANDARTS 12-1996
OR ASTM C150-05 TYPE I-II
CHEMICAL COMPOSITION
Loss of Ignition (LOI) 0.90
Silicon Dioxide (S102)21.0
Tricalcium Silicate (C3S) 60.0
Aluminum Oxide ( A 1203) 5.30
Dicalcium Silicate (C2S) 15.00
Ferric Oxide (FE103) 3.30
Tricalcium Alumino Ferrice (C4AF) 9.76
Magnesium Oxide (MGO) 1.10
Tricalcium Aluminate (C3A) 8.05
Calcium Oxide (CAO) 65.60
Sulphur Trioxide (SO3) 2.70

PHYSICAL AND MECHANICAL PROPERTIES
Final setting time (VICAT) 135 minutes Blain CM2/GR 3.250
Initial setting time (VICAT) 105 minutes Autoclave Expansion 0.02
Compressive Strength: @ 03 days, 230 KG/CM; @ 07 days, 305 K; @ 28 days, 420 KG/CM
Compressive strength mortar Mpa (N/mm 2); @ 28 days; 42.5= 42.5 min.; 52.5= 52.5min


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