Origin

China

Chemical composition           class                class

MgO                                       0.9%                1.91%

SiO2                                       49%                 51%

Na2O                                      0.36%                0.66%

F-CaO                                     0.01%               0.13%

SiO2+Al2O3+Fe2O3               78.9%               88.1%

Moisture                                  0.19%               0.2%

Loss on ignition                        3.7%                4%

Total chloride                           0.03%               0.04%

Physical properties              class             class

Soundness by autoclave             0.12%            0.16%

Line reactivity                           5.5N/cm2          6N/cm2

Compressive strength at 28 days       80%               82%

Ratio of water demand                    92%              99%

Percent retained on 45μm sieve        9.3%              15.3%