DEFORMABLE INDICATORS OF PINE AND BIRCH WOOD UNDER THE ACTION OF ACIDIC ENVIRONMENTS

Abstract

The paper analyzes the publications on the work of wood in various aggressive environments. The article presents the method of experimental studies of birch and pine wood by axial compression along the fibers by short-term loading under a rigid test regime under the action of different acidic media. The terms of impregnation of the studied wood species with hydrochloric, acetic and lactic acids are given. Complete diagrams of "stress-strain" deformation of the studied prisms are constructed. Deformable parameters of samples under the action of acetic, hydrochloric and lactic acids at different impregnation terms were experimentally established. A comparison of such indicators with prisms tested at a standard humidity of 12%. It was found that the acidic aggressive environment increases the deformability of the studied samples.

It was found that the critical deformations uc, 0, d, agr of the studied wood species for 30 days of impregnation with different types of aggressive media increased compared to samples tested at a standard humidity of 12%, a maximum of 18.5%

It was found that the residual deformations of ufin, agr of the studied wood species during 30 days of impregnation with different types of aggressive media increased compared to the samples tested at a standard humidity of 12%, by a maximum of 24.8%.