Open AccessDevelopment of the experimental stand for investigation of the drying process in moist walls
Author(s) -
Łukasz Cieślikiewicz,
Piotr Łapka,
Radosław Mirowski,
Michał Wąsik,
M. Kubiś,
Karol Pietrak,
Piotr Furmański,
Mirosław Seredyński,
Tomasz Wiśniewski
Publication year - 2019
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/660/1/012021
Subject(s) - materials science , water content , thermography , composite material , mortar , moisture , stage (stratigraphy) , environmental science , geotechnical engineering , geology , infrared , optics , paleontology , physics
The paper presents development of the experimental stand for investigation of drying process in a part of a wall which consisted of about twenty bricks joined by mortar. The thermo-injection method was applied for drying. In the first stage of this method several holes are drilled in the moist wall and are used to mount heating probes. These probes supply air to holes and at the same time heat air and the wall up. Then hot air leaves the hole flowing along its boundaries and heating and drying the wall. In the second stage holes are used for impregnation of the wall with hydrophobic fluid which creates waterproof membrane. The stand was based on a precise platform balance applied to measure the variation of global moisture content in the specimen. Moreover, local variations of moisture content were measured applying TDR method. The temperature measurements were carried out using RTDs which were placed in different locations in the wall. Additionally, the IR thermography was applied to register temperature on the specimen surface. The stand was closed in an insulation chamber to decrease the impact of the surroundings. The paper contains the preliminary results of measurements which test operation of the stand.