### Road Salt Impact  
The first studies related to the applicability of road salt for road surfaces date back to the late 1980s [30]. [PERSON] et al. tried to develop a mathematical model describing the defrosting of an ice-covered pavement surface layer according to the location of the agent used, its temperature, and its amount. Based on the analysis, the authors have proven that sodium chloride is a cheap and effective agent for defrosting large areas in a short time compared to comparable calcium chloride. Since 1987, no one has investigated the effect of salt on road mixtures. Because of the widespread availability and use of road salt, as well as the relatively low negative effects, there was a lack of interest in negative impact. However, after some severe winters, attention was refocused on treatments and agents supporting the improvement of road traffic safety in snowfall, rain, and frost periods. The first publications related to the impact of road salt on asphalt mixtures were published between 2002 and 2008 [31; 32; 33]. The authors concentrated on various freeze-thaw cycle combinations that took into account the use of de-icing agents (road salt), weight loss measurement through the impact of road salt, and separate freeze-thaw. Experimental methods allowing the detection of chlorides and water in the layers of the pavement structure based on wave measurements were also proposed. Subsequently, between 2008 and 2015, a few key manuscripts dedicated to the impact of road salt on asphalt mixtures were published [34; 35; 36]. Most of them tried to evaluate the influence of various combinations of freeze-thaw cycles with various chemicals (including road salt) using [PERSON]'s stability test. The negative effect of various road salt concentrations (e.g., 3%, 5%, 10%, 15%, and 20%) on the asphalt mixture stiffness determined in a static three-point bending test was also investigated. Furthermore, the road salt solubility depending on various temperature levels was also analyzed. Afterwards, between 2015 and 2020, absorbing articles [37; 38; 39; 40] developing subject areas connected with road salt impact on asphalt mixtures were published. Authors have compared the snow melting effect via various de-icing agents (including salt) between asphalt mixtures and concrete. Moreover, the effectiveness of various de-icing salts (ex. calcium chloride II, magnesium chloride II, and sodium chloride I) was also investigated. Furthermore, a few experimental methods based on specimen mass changes or disturbances in the electromagnetic field were proposed. These methods allowed for the evaluation of the impact of road salt on subgrade and subbase pavement layers, but they had some limitations (salt concentration could not be high due to measurement error). The following important publications [41; 42; 43; 44; 45] on the impact of road salt on asphalt mixtures were published between 2020 and 2022. [PERSON] et al. [41] investigated the effect of road salt on the properties and parameters of three different types of bituminous mix combinations: 1: mixes were immersed in a salt solution; 2: aggregate was immersed in a salt solution and then used in the mix; 3: a salt additive was directly added to the mixing process. PA-16 porous asphalt and AC-16 asphalt concrete containing common 50/70 road asphalt were used in the tests. Various salt concentrations of 3.5%, 5%, and 10% were taken into account; the soaking time was 3 days, and the test temperature was 20 \({}^{\circ}\)C. The 4-PB method was first used to determine stiffness modulus changes. The fatigue level was also assessed. A similar subject area was analyzed by [PERSON] et al. [42]. The authors have applied different soaking conditions (prime concentration of 5%, temperature as in the previous article, 20 \({}^{\circ}\)C, soaking time of 2 days). The ITS method was used to test the stiffness, and the 4 PB-PR test was used to determine the fatigue life. [PERSON] et al.