The article discusses the critical role of adhesion between reinforcement and concrete in ensuring the structural integrity of reinforced concrete elements. It emphasizes that without proper adhesion, the appearance of the first crack can lead to increased forces in the stretched zone, further crack opening, reduction in the compressed zone height, and ultimately premature failure of the structure. The text delves into the mechanics of adhesion, describing how the bond between concrete and reinforcement functions to anchor the reinforcement and engage concrete in the load-bearing process. The article also explores the complex stress-strain state in the active bond area, highlighting the importance of maintaining adhesion for structural stability. Furthermore, it examines the limiting states of adhesion failure, both in terms of bearing capacity and operational requirements, and discusses the methods for evaluating adhesion quality through force measurements and stress calculations. The study aims to investigate adhesion of reinforcement in tuff concretes on quartz sands, prepared with different materials, providing insights into the factors influencing adhesion such as surface roughness, friction forces, and concrete characteristics. Overall, the article underscores the significance of adhesion in reinforced concrete structures and the need for careful evaluation and testing to ensure structural safety and longevity.