The joints of concrete pavements are susceptible to pollutants dissolved in water, such as chlorides, sulphates and alkalis, which destroy the concrete over time. With carbon-reinforced concrete (CRC), a joint-covering layer can be created that prevents the penetration of pollutants and can thus increase the durability of concrete pavements. The CRC covering layer deforms due to temperature, which leads to biaxial tensile stresses in the covering layer in the area of intersecting joints at cold temperatures. The resulting cracks in the CRC covering layer should be finely distributed to prevent the penetration of pollutants. For this reason, CRC slabs are tested under biaxial tensile stress with variable slab thickness and variable number of layers of carbon reinforcement. In this research, the influences of slab geometry and the number of layers of carbon reinforcement on the load-bearing, deformation and cracking behavior of CRC slabs under biaxial tensile loading is being investigated and evaluated. The results from the biaxial tensile tests are intended to show the suitable configuration of the CRC covering layer to provide durable pavement protection.