Effects of the wood preservatives on mechanical properties of yellow pine (Pinus sylvestris L.) wood

Samples of yellow pine sapwood (Pinus sylvestris L.) were treated with solutions of CCA (0.85%, 1.5% and 2%), ACQ-1900 (2%, 3% and 7%), ACQ-2200 (1%, 2%), Tanalith E 3491 (2%, 2.8%), and Wolmanit CX-8 (2%, 2.8%) in order to determine the effects of new wood preservatives on modulus of elasticity (MOE) and modulus of rapture (MOR) which are the primary criteria for the selection and designing of wood constructions. MOE and MOR were determined by 3-point bending according to DIN 52 186 (1978) in a universal testing equipment type MTS Alliance RT/30. Results showed that 2.8% of Wolmanit CX-8 and 2% of Tanalith E-3491 increased the MOE compared to control, while the rest of the chemicals used in this study decreased or did not affect the MOE. It was determined that 2.8% of Wolmanit CX-8 and 7% of ACQ-1900 increased the MOR comparing to control, while the rest of the chemicals used in this study decreased or did not affect the MOR. (C) 2004 Elsevier Ltd. All rights reserved.