Shape memory polymer rods for improving crack resistance in reinforced concrete beams

Строительные материалы и изделия
Авторы:
Chernykh, Tamara NikolaevnaKomelkova, Maria VladimirovnaWu, ChuangzhouGorbachevskikh, Kirill AlekseevichGilevich, Anton AnatolevichOrlov, Aleksandr Anatolevich
Аннотация:

The object of research is reinforced concrete beams with combined reinforcement. Improving their crack resistance is essential because crack propagation reduces structural durability, and conventional methods of crack closure are not always effective. Method. The study employs an experimental method involving four-point bending tests on specimens with additional heat-activated polycaprolactone rods. Results. The study found that after heat activation, the crack width in the modified beams was more than halved compared to that in the control specimens, and the deflection decreased by 16%. These results demonstrate the potential of using shape-memory polymer elements to control the deformation state of reinforced concrete structures and thereby improve their performance.

Ключевые слова:
Reinforced Concrete; Self-healing; Deformation; Bending Tests; Concrete Beams And Girders; Shape Memory Polymers; Reinforcement
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