The problem of the reconstruction of the historical building coat is in material comparability. The basic of the convenient material choice for reconstructions is to recognize some physical properties of used materials. The crucial properties are moisture and temperature induced expansion. The objective of this paper is to experimentally determine moisture and temperature induced deformations of two lime based plasters. The measurements are performed for moisture content from the dry state to the saturation water content and temperature range of 5 – 60°C. Temperature and moisture induced length differences were measured using LVDT MACRO SENSOR SBP 375040.
Author: Pavlendová G.
DETERMINATION OF HEAT TRANSFER COEFICIENT BY INVERSE HEAT TRANSFER ANALYSIS WITH THERMOGRAPHIC EXPERIMENT
The objective of this paper is to determine temperature dependent heat transfer coefficient for the characterization of building porous materials in the range 20 – 60ºC, using the approach based on the solution of the inverse heat transfer problem and the results of measuring boundary conditions. The Levenberg–Marquardt iteration algorithm in software MATHEMATICA is applied to solve nonlinear system of algebraic equations resulting from the sensitivity matrix. The surface temperature distribution is measured using the infrared camera.