The paper proposes an impregnation composition for cement concrete roads used as an ice-phobic coating. The composition has been made based on keratin-containing components derived from animal waste with the addition of water-soluble polymers. The main parameter of serviceability of the coating impregnated with the developed composition was assessing the adhesion resistance of ice crust to concrete under the influence of mechanical loads. For this purpose, tests of big specimens (surface area 1925 cm²) in laboratory conditions with application of vibration and impact loads and modelling of thermal stresses were conducted. The test results showed the effectiveness of the ice-coating, as in all experiments, the uncoated specimens showed a greater resistance of the ice crust to mechanical stresses. An additional evaluation parameter was comparing the water absorption capacity of coated and uncoated concrete. The test results showed a significant difference in the water absorption capacity of the uncoated specimens, exceeding the coated specimens by 47%. Due to the results obtained, it will be possible to use the impregnation compound effectively to improve the ice resistance of cement concrete coatings.

The object of the study is the chemical resistance of concrete modified with granite dust and acrylic latex. The materials used in the study were concrete samples with a variable composition of additive components, which were subsequently exposed to an aggressive environment. The problem, which the research is aimed at solving, is the tendency of concrete structures to fail under prolonged exposure to acidic conditions, which significantly reduces their service life. This research aims to address this issue by incorporating modifying additives that improve concrete’s resistance to chemical attack. The experimental program involved testing concrete specimens with different concentrations of granite dust (1–4 % by cement mass) and acrylic latex (0.1–0.4 % by water mass) in a 10 % sulfuric acid solution for up to 360 days. Strength loss was assessed at regular intervals, and chemical resistance coefficients were calculated to evaluate durability. Additionally, long-term degradation predictions were made using logarithmic models. The results show that the optimal composition – 4 % granite dust and 0.4 % acrylic latex –significantly improves chemical resistance, with specimens retaining up to 49 % of their initial strength after 100 years of exposure. The enhancement is attributed to the densification effect of granite dust, which reduces permeability, and the hydrophobizing properties of acrylic latex, which minimize acid penetration. Compared to unmodified concrete, the proposed composition demonstrates lower strength loss and higher durability under aggressive conditions. The proposed modified composition offers a reliable solution for extending the service life of reinforced concrete structures exposed to chemical degradation

The article presents the results of using a complex modified additive to improve concrete's physical and mechanical properties. The complex additive includes industrial production wastes: metallurgical slag and alcohol production wastes (post-alcohol bard). To stabilize the hydrogen index the alkali KON is included in the composition of the additive. A set of laboratory studies was carried out to measure the strength, absorption, and frost resistance of test specimens to assess the effect of the additive on the properties of concrete. A comparison of physical and mechanical properties was made for samples of different concentrations of slag. The ratio of slag components to cement was from 5 to 25% by the total mass of the binder, a multiple of 5%. The optimal composition of the mixture, with maximum strength values, corresponds to the percentage of slag 15%, post-alcohol bard 22.5 liters, and alkali 150 grams. In general, the results obtained from data points of the compared parameters showed consistent results with minimal variation in the data. The results obtained are of practical value related to the reduction of the cost of production of structural concrete with an increase in its strength indicators.

In modern construction, considerable attention is paid to the search for environmentally safe and cost-effective methods to improve the performance of concrete. This paper investigates the potential of a complex admixture developed on the basis of industrial wastes, in particular microsilica, phosphogypsum, soapstock and post-alcoholic bard for concrete modification. The aim of the study is to evaluate the effect of each component of the admixture on the transformation processes of concrete, especially on its strength characteristics. Laboratory tests were carried out on specimens with different microsilica content and the results showed that the maximum strength increase was achieved at a microsilica content of 20 % in relation to the cement mass. Further analysis revealed a decrease in strength performance when the microsilica content increased above 20 %, which may be due to the overabundance of silica in the binder composition.