Improving the Structural Characteristics of Heavy Concrete by Combined Disperse Reinforcement

The development of perspective concrete mixes capable resisting the action external loads is an important scientific problem in modern construction industry. This article presents a study influence steel, basalt, and polypropylene fiber materials on concrete’s strength deformation characteristics. A combination various types dispersed reinforcement considered, by methods mathematical planning experiment, regression dependences characteristics fibers their volume fraction are obtained. It was shown that increase compressive 35% fiber-reinforced concretes made using steel basalt with concentration 2% 2%; tensile bending increased 79%, ultimate deformations during axial compression decreased 52%, under tension 39%, elastic modulus 33%. Similar results were obtained for other combinations reinforcement. studies carried out it possible to determine most effective each optimal concentration.