Abstract
The concrete layer as a part of the timber-concrete composite (TCC) element makes it possible to maintain the accumulated heat and thus reduce the energy required for heating. Especially for buildings used for a sauna, swimming pools or wellness. In the TCC cross-section due to uneven thermal and humidity deformation of both materials, additional stresses occur. It can lead to the failure of partial cross-sections or composite connection. The aim of the research is to investigate the influence of changing humidity and temperature conditions of the environment on the composite adhesively bonded TCC panels without the influence of other phenomena such as mechanical stress or the effect of concrete shrinkage. The paper presents the results of the preliminary theoretical investigation before the realization of measurements on prepared specimens.
Highlights
The timber-concrete composite (TCC) structural elements have many advantages such as the higher stiffness and load-bearing capacity, lower vibration compared to the timber ceiling
The concrete layer in the TCC element makes it possible to retain the accumulated heat and reduce the energy required for heating, especially of buildings with wellness, sauna or swimming pools
Due to uneven thermal and humidity deformations of each layer of TCC, normal stress occurs, which can lead to the partial cross-section defect or the shear connection failure
Summary
The timber-concrete composite (TCC) structural elements have many advantages such as the higher stiffness and load-bearing capacity, lower vibration compared to the timber ceiling. The concrete layer in the TCC element makes it possible to retain the accumulated heat and reduce the energy required for heating, especially of buildings with wellness, sauna or swimming pools. When using TCC elements in an environment with changing humidity and temperature conditions, it is important to know the behavior of these elements with respect to different coefficients of thermal and humidity expansion of both components and especially the different deformations in each direction due to orthotropic behavior of timber [1, 2, 3]. The influence of humidity and temperature changes on the behavior of TCC beams with an adhesive shear connection was studied within various long-term bending tests [4, 5].
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