Influence of treatment with water-soluble CCB preservative on the physical-mechanical properties of brazilian tropical timber

Abstract

This aim of this work is to present an analysis of the influence of impregnation against biological demand, realized with saline solution of CCB (Chromated Copper Borate preservative) by vacuumpressure process, on physical-mechanical properties of tropical wood species Simarouba sp., Cedrelinga catenaeformis and Erisma uncinatum Warm. In theory, such process could increase the number of surface defects in wood pieces and reduce its strength properties. To investigate this influence, the complete species characterization was carried out in two conditions (without treatment and CCB treated wood). Tukey's multiple comparisons test (5% significance level) was applied. In addition, scanning electron microscopy (SEM) photomicrographs were obtained with the energy dispersive spectroscopy (EDS) to investigate preservative presence at the cellular level. Results permitted to conclude that CCB impregnation process did not affect physical-mechanical properties of the studied species.

Physical and Mechanical Properties of Light Red Meranti Treated with Boron Preservatives

“…The origin of the meranti species obtained was naturally grown and its quality may differ from those that are plantation-grown (de Souza Almeida et al, 2019). Additionally, the presence of pith has been proven to have substantial effect on strength.…”

Effect of CCB Treatment and Alternative Adhesive Content on Physical and Mechanical Performance of Particleboards

“…To enable wood use on severe conditions of biological attacks (Bayatkashkoli et al 2016;, it is necessary to treat wood to provide protection and enhance its lifespan. The preservative treatments available are chromated copper arsenate (CCA), which is widely used on timber for houses (Ferro et al 2016;Freeman et al 2003) and considered toxic due to element arsenic, which is carcinogenic (Vidal et al 2015); and chromium copper boron (CCB) (Almeida et al 2019;Ferro et al 2016), less toxic than CCA and bring better mechanical properties to wood (Bertolini et al 2013).…”

Evaluation of CCB-preserved medium density particleboards under natural weathering

“…CCA treatment, used for treatments on timber (Magalhães et al 2012;Bertolini et al 2014b;Ferro et al 2016), is considered carcinogenic due to the presence of arsenate (Vidal et al 2015). CCB is considered less toxic than CCA and enhances mechanical properties of the wood product (Bertolini et al 2014a;Almeida et al 2019).…”