1, dry flexural strength values than 11Mpa reach 24Mpa value, qualified

2, water saturation values of flexural strength than 6Mpa reach 18Mpa value, qualified

3, water absorption rate of less than 0.35% of the value of the deformation, the result is 0.32%, qualified

4, the size of the heat shrinkage values of less than 2.0%, the result is 1.8%, qualified

5, the density is greater than 1.30g/cm3, qualified

(2) fire resistance:

1, the furnace temperature rise of less than 50 degrees to 17 degrees, qualified

2, continuous burning time of less than 20s results for 0s (non-combustible), qualified

3, the mass loss rate of less than 50.00% value, the result is 45.82%, qualified