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Technical Information

glass2  Technical Information

National Research Center of Testing Techniques for Building Materials Test Report

NO.
Test items
Standard index
Test results
Individual conclusion Test standard/method

 

1
Bulk density
≥2.30g/cm3
2.59g/cm3
Pass GB/T19766-2005
2
Water absorption
≤0.50%
0.02%
Pass
3
Specular gloss
≥70
81
Pass
4
Bending strength
≥7.0MPa
25.1MPa
Pass
5
Compression strength
≥50.0MPa
174MPa
Pass

 

6
Shore hardness
─────
127
───── GB/T9966.5-2001
7
Linear thermal expansion
─────
4.0*10-6℃-1
───── GB/T3810.8-2006
8
Vickers hardness
─────
6.2*103N/mm2
───── GB/T16534-1996
9
Moh’s hardness
─────
5
───── JC/T872-2000
10
Chemical resistance
Resistance to acid
No obvious change in surface,K≤0.2%
No obvious change in surface,K≤0.08%
Pass JC/T872-2000
Resistance to alkali
No obvious change in surface,K≤0.2%
No obvious change in surface,K≤0.07%
Pass
11
Radionuclides(A class)
Internal exposure index IRa
≤1.0
0.1
Pass GB6566-2001
External exposure index Ir
≤1.3
0.1
Pass