Bending Element Analysis For Reinforced Crumb Rubber Concrete

Crumb Rubber Concrete is also called elastic concrete. It is a new style construction material. This paper makes the first step on the possibility research of introducing the Crumb Rubber Concrete with reinforced bars in to structure engineering.Based on codes standard method—'formula methed', this paper presents a bending analysis of a reinforced beam made with CRC within the framework of controlled concrete beam theory. And the analysis result show that the reinforced beam made with CRC's bearing capacity is higher than that made with plain concrete. Compressive strength is one of the most significant actors of concrete. While Crumb Rubber Concrete (CRC) shows a characteristic of being high in ductility, energy absorption and ultimate compressive failure strain. In comparison to controlled concrete, crumb rubber concrete (CRC) exhibits a higher value of strain energy. So this paper presents a new design conception: ignoring concrete's compressive strength and introducing the strain energy into design method which is called'energy method'. And the results show that the ultimate bearing capacity of beam has an intimate relationship with the strain energy.Based on a series of material experiments and some existing literature results, a reinforced CRC (R%=10%~15%) bending beam case study is performed with the ultimate compressive failure strain for CRC being taken 0.6%. This article presents a bending analysis of a reinforced beam made with CRC as well as controlled concrete of C-50 and under.This paper established a finite element model to help studying the beams bend bearing performance. Borrowing ideas from some experiment results, non-linearity finite element analysis was worked out to find reinforced concrete beams made with CRC and controlled concrete's limit bearing capacity, beams fracture developing and its deflection. Some conclusions were compared with theoretical formula results.