Table 3.

Water absorption of unweathered southern pine and weathered specimens treated with nano-ZnO

Treatment (%)	Water absorption
	Wt.a	Vol.b
0.0	45.8	0.45
1.0	42.4	0.42
2.5	29.5	0.29
5.0	28.7	0.29

^aPercent by weight (g)

^bPercent by volume (g/cm³)