###### Abstract
The authors underlined in their conclusions that the roller operation parameters and lift thickness should be kept constant during further quality assurance using the roller-integrated CCC technology, since the roller measurement values rely strongly on the roller operation parameters and lift thickness, especially for cement-treated layers. As for further research, the authors suggest investigating the effect of the moisture content on the roller measurement values, as well as the correlations between the roller measurement values and further location-specific in situ point measurements. The results of a geostatistical analysis of IC technology showed that this technology can provide detailed information about the uniformity of the spatial compaction and that it could be adopted to monitor the changes in spatial uniformity during the compaction [16]. Finally, for effective compaction, appropriate material needs to be used, with proper aggregate gradation and binder content depending on the constructed bearing layer. The recipe for the reference mixture is obtained by laboratory testing. For a proper reference mixture definition in laboratory conditions, realistic on-site conditions need to be simulated through proper simulation of the in-situ compaction energy and other conditions. The standard laboratory tests for determining the maximum dry density (MDD) and OMC are the Proctor test, vibrating hammer, and vibrating table [17; 18]. The unbound base layer is an indispensable part of every pavement, made of a mixture of unbound granular stone materials. The main characteristics of this layer are the degree of compaction and the modulus of compressibility. In pavements with a heavy traffic load, a hydraulically bound base layer is installed on the unbound base layer, which is a mixture of well-graded aggregate, hydraulic binder and an appropriate amount of water. The main feature of this layer is the degree of compaction and compressive strength. To determine the compaction parameters in laboratory conditions, the most widespread test is the Proctor test, while other test methods can also be applied. Since granular soils are mostly compacted by vibrating rollers, with vibration compaction, it can be inferred that the Proctor test does not give sufficiently realistic results, because it does not use any vibrations during specimen compaction. As an alternative to sample preparation by the Proctor compaction method, vibratory hammer compaction can be used. [PERSON] et al. [19] concluded that when using the Proctor compaction method, grains tend to pre-shred and be unevenly distributed, which leads to unrealistically high optimal moisture content and maximum dry density values which are hard to achieve in real compaction. [PERSON] et al. [18] compared four compaction methods on roller-compacted concrete mixtures to determine the compressive strength. The results proved the better efficiency of the vibrating hammer test than the modified Proctor test for mixtures that contain lower amounts of cement, while for mixtures with higher cement content, smaller differences between the test methods are observed. Also, [PERSON] and [PERSON] [20] claim that the vibrating hammer represents the field compaction conditions of granular soils better than the vibrating table test. [PERSON] et al. [21] studied the influence of different laboratory compaction methods on the resistance to permanent deformation of unbound granular materials. Comparisons were made for samples compacted with four different methods: gyratory compactor, modified Proctor, vibratory table and vibratory hammer, and showed that the modified Proctor method shows less resistance to permanent deformation than methods based on vibration.