Glossary/ cement terminologies/abbrevations

OPC                         ordinary portland cement

PPC                          portland pozzollona cement

Gr                             grade (indicates cement grade)     

CaCO3                     calcium carbonate or lime stone

MgCO3                    magnesium carbonate

LOI                            loss on ignition

SiO2                           silicon di oxide

Al2O3                         alumina or aluminium oxide

CaO                            calcium oxide or quick lime

MgO                            magnesium oxide or periclase

R2O3                          flux or oxides of iron and alumina combination

SO2                             sulphur di oxide

LSF                            lime saturation factor

STI                              Scheme of Inspection and Testing

CCR                          Central control room