RESEARCH OF THE STRENGTH AND DEFORMABILITY OF ROAD SLABS REINFORCED WITH SMALL DIAMETER COMPOSITE REINFORCEMENT

Scientific work is devoted to research of stress-strain state PD2-9,5 road slabs, reinforced with identical frames made fiberglass reinforcement and metal A500C the 10th diameter. In order verify hypothesis regarding possibility equal-strength replacement composite a smaller diameter, glass 7th diameter was used reinforce slab. To determine actual bearing capacity, due application uniformly distributed load, calculation scheme "beam" slab, i.e., resting on two supports, applied. During experiment, it determined that appearance, formation, opening normal cracks in both tested slabs corresponds "classic" nature crack formation concrete elements operating bending. After destruction slab reinforcement, numerous structural mesh were recorded, different degrees branching, mainly lateral central part lower (stretched) zone. The total final deflection center at time failure 3,41 cm, which significantly exceeds permissible value for span length L < 3 m. At same time, current maximum load ( without complete slab) 1,06 meets generally accepted construction requirements. It established capacity higher by 2,3 times than similar reinforcement. This fact does not give grounds asserting effective use Ø7 mm as conditionally “equal-strength” Ø10 class when reinforcing type. ensure requirements, necessary increase applied or, an option, combined simultaneous combination Keywords: strength, state,