Transverse Cracks in Urban Pavement

Transverse Cracks in Urban Pavement

The cracks transverse to the axis of an urban pavement, as it is known, owe their appearance mainly due to the temperature changes suffered by the pavement structure. When the construction of a flexible type pavement is carried out, during the constructive process itself, the layers that will confirm both the supporting layer corresponding to the top of the natural terrain (called the sub-layer) are accommodated. As well as the subsequent layers that will integrate the structure provided by the previously calculated design, in order to place the layer formed by the asphalt concrete folder.

Transverse Cracks in Urban PavementCross-sectional cracks in pavement

Both the ambient temperature prevailing during the duration of the construction process and the humidity (environmental and of the materials themselves) can influence the behavior of the mass formed by the pavement itself. As the time passes and begins to develop what will be the life itself of the pavement, tensile stresses may arise, which in many cases generate cracks transverse to the axis of the pavement, since it tends to form a Temperature joint. This usually happens within the first weeks of life and mainly if there were differences in temperature and humidity in the prevailing climate.Transverse Cracks in Urban Pavement

In some special cases, there may also be transverse cracks in trench fillings which have the characteristic of being perpendicular to the axis of the pavement, however, when this is the situation, the transverse cracking failure will present additional symptoms consisting of deformations in the Surface area of ​​the filling area, which causes several cracks to be present that are substantially parallel to each other, marking the width of the trench with certain clarity, since its presence will mainly be due to a settlement produced in the filling of the aforementioned trench.Transverse Cracks in Urban Pavement

Due to the aforementioned, the caulking of the transverse joints must be made with a product that maintains a certain degree of flexibility that allows it to adapt to the volumetric variations that can be expected over time.

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