Introduction and Aim

Steel-reinforced concrete is an integral part of construction, but its durability and reliability can be compromised by problems arising from the interaction between steel and concrete. Differences in the properties of these materials often lead to microcracking, reduced load-bearing capacity, increased corrosion, adhesion problems, and a shorter service life of structures.

The study's main aim is to investigate the effectiveness of multicomponent composite materials (MCM) that improve the interaction between steel and concrete.

Methods

The study was conducted in two stages. First, we selected materials, among which were the following: acrylic polymer compositions; epoxy resins with modified hardeners; liquid glass-based materials with mineral fillers; hybrid organo-mineral systems.

In the second stage, experimental tests were conducted, which included assessment of adhesive strength, corrosion resistance, crack resistance, and durability under cyclic freezing/thawing conditions.

RESULTS and DISCUSSION

The results demonstrate significant improvement in the compatibility of steel and concrete through the use of MCM. In particular, the adhesive strength increased by 20-40% compared to unmodified samples, indicating a denser and more homogeneous structure at the interface. MCM also provided effective protection of permanent formwork, reducing the corrosion rate in aggressive environments by 50% or more. The MCM matrix's polymer components partially compensated for stresses from thermal expansion differences, reducing the risk of microcracking.

CONCLUSION

The results of the study confirm that MCM are an effective solution for ensuring the compatibility of steel and concrete. The prospects of using such materials in construction will significantly increase the reliability of structures and extend their service life.