Wood Processing For Construction

Abstract

The article presents the positive and negative properties of wood, the technology of wood preservation and antiseptic treatment, and also deals with the fire retardant composition "Pyrol".

Polymer reagent in construction practice

“…An analytical method for calculating the measure of the hydrophobicity of concrete by the value of capillary suction is proposed, which makes it possible to make a comparative assessment of the effect of POLY-ANS additives and other recipe-technological factors on the change in the relative measure of hydrophobicity [17][18][19][20][21][22].…”

“…When developing technological methods for reducing capillary permeability with the use of additives, the determination of the relative measure of the hydrophobicity of concrete is carried out in a certain sequence; in particular, the samples are tested for capillary E3S Web of Conferences 365, 02024 (2023) https://doi.org/10.1051/e3sconf/202336502024 CONMECHYDRO -2022 absorption during evaporation of the saline solution, the average radius of capillaries is determined by the concrete method of mercury porosimetry, and more [13][14][15][16][17][18][19][20][21][22].…”

Capillary permeability of concrete in aggressive dry hot climate

“…After 9.10.12 months of testing in sodium sulfate solution Rben of concrete specimens with cement consumption of 290.360 and 430 kg / m 3 and additives POLY-ANS 1, POLY-ANS 2, POLY-ANS 3 decreases by 50, 36, 24, respectively; 40, 31, 15; 35, 26, 12%, and in a sulfate-chloride solution at 55, 46, 29; 46, 37, 16; 42, 31, 15%, respectively (Figure -4). At the same time, concrete samples with a cement content of 290 kg / m 3 and additives had visible cracks due to expansion deformations from bulk crystallization pressure [13][14][15][16][17][18][19][20][21][22][23][24][25].…”

“…In a sulfate-chloride solution, the depth of concrete destruction is naturally somewhat higher and amounts to 1.5-2 mm (Figure -1). [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24].…”