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Results of Testing of Cement from Vietnam North.

Cement (12/09) BGC Cement (units)
SG 3.12 (-)
F.I 363 (m2/kg)

45um residue 11.4 (%)
NC 27.1 (%)
Initial Set 75 (minutes)
Final Set 150 (minutes)
Soundness 1.0 (mm)

Mortar Compressive Strengths
3 day 30.1 (MPa)
7 day 47.9 (MPa)
28 day 61.2 (MPa)

Chemical Analysis
Na2O 0.1 (%)
K2O 0.8 (%)
Na2O (equiv) 0.6 (%)
Cr6+ nd (%)
Freelime 1.0 (%)
Insoluble Residue 0.1 (%)
Original Repeat
SiO2 22.3 22.1 20.0 (%)
Al2O3 6.0 6.1 5.4 (%)
Fe2O3 3.9 4.0 3.3 (%)
MgO 0.7 0.9 1.3 (%)
SO3 1.8 1.8 2.5 (%)
CaO 61.8 61.7 63.9 (%)
LOI 2.0 1.9 2.5 (%)

C3S 31.0 31.3 60.1 (%)
C2S 40.6 39.8 12.0 (%)
C3A 9.3 9.4 8.6 (%)
C4AF 11.9 12.2 10.1 (%)

nd – not detected
Michael G Remias
BGC Cemtech February 17 2009