Adhesion of steel and fiberglass meshes with concrete

Introduction. To prevent the formation of cracks and destruction of masonry structures they are reinforced with meshes at the stage of construction. Compatibility of the reinforcing material and the main body of the structure is an important parameter for the efficient operation of the structure. The article examines the amount of adhesion of fiberglass and steel mesh elements with sand concrete, which is the binding of bricks. Materials and methods. Reinforced beams are tested for bending. Samples of beams consist of two halves connected by a rod in a stretched zone and uncoupled by a hinge in a compressed zone. Elements of steel and fiberglass grids with limited anchorage zones in concrete act as reinforcement. The values of rod slippage in concrete were fixed by a dial gauge. Results. According to the results of the test, the slipping forces of the rods were obtained and the cohesive stresses of the elements of steel and fiberglass grids with concrete were calculated, and diagrams were drawn. The value of adhesion with concrete fiberglass rods was greater compared with the adhesion of steel rods for all values of slip. Conclusions. Fiberglass meshes have a number of drawbacks to steel meshes, however, a large number of positive characteristics of fiberglass meshes, including adhesion with concrete, make them competitive with steel, and in many cases more preferable for use in structures.