This study investigates the environmental potential and viability of replacing natural river aggregates (RAs) with copper slag aggregates (CSAs) in concrete production. The primary objective was to assess the structural performance of these eco-concrete mixtures and determine the optimum copper slag content for structural applications. The experimental program evaluated concrete mixtures with natural river aggregate replacement levels of 20% + 20% and 50% + 100% for the 8/16 mm and 16/32 mm fractions, respectively, using coarse copper slag aggregate (CCA). The results indicate that incorporating CCA increases concrete compressive strength, successfully meeting the requirements for strength class C25/30. The petrographic assessment indicated a shift towards an aggregate mixture, in which the dominant quartzite and a constant quartz-mineral fraction of 16.5% provide a stable structure alongside the CSA grains. However, a significant increase in water penetration depth (up to 22%) was observed, highlighting the enhanced water penetration depth of these concretes. SEM microstructural analysis attributed the improved bond between the cement matrix and CCA grains to a compact interfacial transition zone. Additionally, leaching tests confirmed that heavy metals are effectively immobilized in the cement paste for mixtures with lower replacement levels (up to 20%), thereby meeting environmental standards. The study concludes that copper slag at these controlled replacement levels represents a sustainable, high-quality alternative for construction materials in drainage infrastructure. Incremental analysis in accordance with NEN 7375 showed that the tested material behaves as an insoluble matrix, with no evidence of diffusion-controlled leaching. The cumulative leaching values obtained after 64 days of testing in accordance with NEN 7375 were significantly below the regulatory limits for all components analyzed. These findings indicate a low potential for contaminant release and favorable environmental stability of the 20% replacement mixture, though further leaching evaluation is required for maximum slag contents.

Industrial development during the last decades has led to creation a large amount of byproducts that are stored on the landfills and create the major environmental problem. Many researchers deal with the topic of possibility of usage the alternative materials in various industrial areas, in order to solve the problem of deposition and enable saving the natural raw materials. Steel slag is a by-product of steel production and is one of the industrial waste materials in our country that is deposited in large quantities. This alternative material is very useful, especially in the road construction, which is described in this paper.

After relocation of the Ćehotina riverbed in Pljevlja, the attention is shifted to monitoring the new channel in order to ensure its stability. The regular data collection was ensured through a system of piezometers for groundwater monitoring, the water gauge profiles for the water level control, and geodetic and inclinometers observations for tracking the terrain changes. This comprehensive approach allows promptly identification any changes or potential risks and taking the appropriate measures to maintain the channel stability and minimize the environmental impact.

The expansion of the road network requires the use of a large amount of natural resources. On the other hand, industrial development leads to the creation and deposition of a large amount of industrial waste. Large amounts of this waste accumulate in landfills close to the production process and represent a major environmental and economic problem, which can be solved by reusing industrial waste in the construction sector. Many researchers dealt with the topic of using copper slag as a partial replacement of natural aggregate in asphalt mixtures and as a result obtained favorable physical and mechanical characteristics of asphalt mixtures. One of the negative impacts of this alternative material is the high porosity of the slag, which required a higher amount of bitumen in the asphalt mixtures. However, this problem is solved by adding recycled asphalt (RAP-Recycled asphalt pavement) in the mixes.

Copper slag, produced as a by-product of the pyrometallurgical process of obtaining copper from copper ore in Bor, is disposed as waste in landfills. Despite the favorable physical and mechanical properties of concrete made with copper slag aggregate, such as higher compressive strength (40.8 MPa), higher tensile splitting strength (10.3 MPa), higher pull-off strength (3.1 MPa) and lower water permeability, its use in the construction industry has not been sufficiently investigated. The paper shows the possibility of using copper slag aggregate (CSA) in concrete as a potential replacement for natural river aggregate (RA).

General corrosion testing is carried out in the field, in selected atmospheric corrosion station, near the Sulphuric Acid Plant in Bor, for six months. To assess the corrosion resistance of steel S235JR, the analysis of mass loss after exposure to the aggressive environments in Bor were employed. In order to obtain a complete characterization of the atmosphere, as well as of the exposure condition, the meteorological data in the period of the experiment duration in the outdoor conditions were analyzed to determinate the corrosivity category. Pollution by SO2 alone was considered in this study because this is the most common and important corrosive agent. Corrosion loss of the experimental specimens were measured. With the help of a quantitative analysis of the test result, a better determining the corrosion category can be done that represents the actual environment.