Аннотации:
This article explores the behaviour of concrete samples from road sections that have experienced warping due to
temperature fluctuations. Warping refers to the curling of concrete slabs. The paper presents a novel approach to
tracking the expansion and contraction of concrete joints over time. It analyses how the size and shape of
concrete samples from cement-concrete (hereafter referred to as concrete) roads change under varying tem
peratures. Additionally, this study investigates the impact of temperature on concrete deformation. It was
assumed that as the concrete’s density and compressive strength increased, the linear expansion coefficient also
increased. Furthermore, research has shown that this coefficient can vary along different axes within the concrete
volume. This article describes the mechanism behind the deformations observed during the thermal expansion of
concrete slabs and identifies the key factors influencing the buckling of concrete slabs as the air temperature
rises. The temperature expansion may vary depending on the material’s structure, as well as the constant
polymorphic transformations of cement minerals within the concrete. These transformations are influenced by
ambient temperature, humidity, and the presence of free lime. The factors affecting temperature expansion were
determined to be the mineralogical composition of the cement, the concrete’s strength class, and the cement
content within the concrete.
