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Mechanical & Physical Properties of YEUNG'S G.R.P. Laminates

Testing Based on BS 2782 and carried out by the University of Hong Kong

TABLE I - Indicative Figure of Mechanical Properties of YEUNG'S GRP Material compared with other construction materials

Physical Properties

Test	Method	Result
		Figure	Unit
1. Glass Content	BS 2782 Part 10 Method 1002	35	%
2. Flexural Strength / Elastic Modulus	BS 2782 Part 10 Method 1005	250	N/mm²
3. Specific Gravity	BS 2782 Method 620A	1880	kg/m³
4. Tensile Strength	BS 2782 Part 10 Method 1003-1983	171	N/mm²
5. Compressive Strength	BS 2782 Method 303B	102	N/mm²
6. Barcol Hardness	BS 2782 Part 10 Method 1001	35
7. Impact Strength	BS 6206	79.4	KJ/m²
8. Flexural Modulus / Young's Modulus	BS 2782 Part 10 Method 1005	12810	N/mm
9.Tensile Modulus	BS 2782 Part 10 Method 1003-1983	12600	N/mm
10. Interlaminate shear strength	BS 2782 Method 340A	19.6	N/mm
11.Thermal Conductivity	BS 874 Part 2 - 1986 Sec 2.1	0.22	W/m deg C
12. Thermal Expansion	ASTM D696-79 or similar	2.16 x 10-5	C
13. Water Absorption	BS 2782 Part 4 Method 430A-1983	0.18	%
14. QCT Bilster Test	1000 Hours at 55 deg C	Satisfactory
15. Water Quality (For Tanks Only)	BS 6920	Pass