Experimental Research on the Swelling Pressure Developed by Ash Wood

The paper presents the results of anexperimental research concerning the swellingpressure developed by ash wood (Fraxinus excelsiorL.). The objective of the presented work was todetermine the level and time evolution of thepressure developed by ash wood samples, whenswelling from oven-dry state until the fiber saturationpoint was exceeded and maximum swelling wasreached. The results show maximum values of theswelling pressure between 3.10 MPa and 4.52 MPa,as well as clear differences between the values ofthe swelling pressures in radial and tangentialdirection, respectively. The results can be useful forvarious applications related to wood products,especially for outdoor furniture and wood inconstructions.