Study on Mechanical and Physical Behaviour of Hybrid GFRP

Table 3

Water absorption (WA) and hardness (SD-D) data and their standard deviation (std. dev.).

Volume fraction	Average WA/%	Std. dev.	Average SD-D	Std. dev.
0	1.45	0.12	19.1	0.91
0.1	5.17	0.16	19.7	0.52
0.2	5.35	0.18	23.1	0.26
0.3	7.34	0.73	29.7	0.96
0.4	9.10	0.29	31.53	0.70
0.5	11.67	0.34	35.43	0.68