Open AccessThe change in mass of insulating materials in the Vietnamese climate conditions
Author(s) -
Tien Nam Nguyen,
Petr Grabovy,
Valery Kazarnovsky
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/869/5/052026
Subject(s) - evaporation , absorption of water , moisture , thermal insulation , humidity , materials science , relative humidity , environmental science , liquid water , saturation (graph theory) , composite material , layer (electronics) , meteorology , geology , earth science , physics , mathematics , combinatorics
In article obtained in laboratory experiments, water absorption characteristics and evaporation of water from the insulation materials to determine their weight change in tropical climates with the following characteristics: high temperature and humidity, a large number of medium and monthly rainfall seasonal rains lasting 6 months. Thus, the obtained results may be used to repair wall enclosing parts in the Vietnam construction industry. The characteristics of waterproof, moisture resistance, water evaporation, biological stability in insulation materials, which are used in the thermal protection of buildings in Russia and in the world. Evaluation experiments were performed on the characteristics of water absorption and water evaporation of heat-insulating materials (mineral wool, polyfoam, extruded polystyrene) in the laboratory in three situations: the location of samples on the surface of the water, drowning of samples in water and evaporation water from water-saturated samples. These tests simulate the impact of rainfall on the insulation material and evaporation of water from the insulation material during a certain time period (e.g., during assembly or during operation, when the protective layer is damaged). The experimental results show the dependence of saturation insulation from direct contact with water in his drowning conditions and arrangement of heat-insulating materials on the water surface. In addition, the rate of evaporation of water in the water depends on the amount of thermal insulation material and its characteristics. Based on the results of such experiments, it is possible to make a choice of types of insulating materials suitable for Vietnamese climatic conditions.