ბაზალტფიბრობეტონის ტენგამტარობის მახასათებლების დადგენა

Abstract

Issues concerning cement-based composites basalt fiber concrete’s moisture conductivity are studied in the article. Composites moisture conductivity parameters (moisture diffusion, moisture transfer and relative moisture transfer coefficients) are identified by drying testing on specimens. Experiments are conducted by testing specimens of ( 0t 28 = day age) and containing moisture of ( W 4.5% 0 = according to mass) on drying. Specimens were dried up in the environment of 20% relative humidity. Drying process duration was (190 days) till the equilibrium moister content was met, when moisture transfer (drying) between environment and specimen stops, W 1% C = (according to mass). During drying process moisture loss in specimens were identified with periodic weighing. Cylindrical specimens (with isolated endings) were experiencing drying process from free lateral surfaces. Weight experiment data analyses determined curve of basal fiber concrete moister content changes in time. Parallel to tests cylinders moisture content change was calculated theoretically at any point in time for χ - coefficient’s different values. N number of theoretical curves is received. By comparing and analyzing experimental and theoretical data such a value of χ - coefficient is chosen that can ensure that theoretical curve can reflect experimental curve as much as possible. On the bases of a given data with corresponding formulas moisture conductivity characteristics of basalt fiber concrete: (moisture diffusion, moisture transfer and relative moisture transfer) values are determined.