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Experimental Study on Shear Behavior of Steel Reinforced Recycled Concrete Beams

Author: WangXiuZhen
Tutor: XueJianYang
School: Xi'an University of Architecture and Technology
Course: Structural Engineering
Keywords: Steel reinforced recycled concrete beams Experimental study Shear capacity Diagonal cracks Crack width
CLC: TU398.9
Type: Master's thesis
Year: 2011
Downloads: 80
Quote: 0
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Abstract


From resource conservation and sustainable development point of view, the research and application of recycled concrete will become the hotspot of structural engineering in the future, at home and abroad also did some research on recycled concrete. Introduction of recycled concrete, steel reinforced concrete composite structure can achieve the re-use of resources to achieve the sustainable development of composite structures. Recycled aggregate concrete with steel reinforced formed section steel recycled concrete structure, In addition to the advantages of high strength, stiffness and ductility of steel reinforced concrete structure, energy saving and environmental protection. On the steel shear behavior of recycled concrete beams made the following studies: (1) pilot study. Static test 12 different recycled coarse aggregates replacement rate, shear span ratio and concrete strength grade of steel recycled concrete beam specimens, conducted a comprehensive study of the component by the shear capacity, failure modes and crack development observe the specimen from cracking to the final destruction of all the test phenomenon, summed up the mechanism for renewable the concrete beam three different shear failure pattern section steel, the analysis of the main factors affecting the regeneration of the steel reinforced concrete beam shear capacity. (2) Calculation of Shear Capacity. Comparing the composite structure of steel reinforced concrete technical regulations \simple and practical steel formula of the shear capacity of recycled concrete beam members closer to the calculated and experimental measured value. (3) calculate the crack width. Calculation of the cracks are the serviceability limit state calculations, the calculation method of the cracks directly determine the components during normal use of the performance issues, comparing the calculation of bending cracks in steel reinforced concrete composite structure technology procedures \the obtained calculated value and the measured value of the test, both relatively close reference to the theory of the calculation of the maximum width of the existing diagonal cracks, easy maximum diagonal crack width formula, the calculated and the experimental values good agreement. The results show that: the recycled coarse aggregates replacement rate of shear capacity of the member; improve strength grade of concrete help to improve the shear capacity of the steel reinforced concrete beam; shear span ratio has a decisive impact on the component failure pattern, failure load of steel reinforced recycled concrete beams with shear span ratio increases and decreases; steel reinforced recycled concrete beams has the advantages of high bearing capacity, stiffness, ductility, steel reinforced recycled concrete beams of the new structure of a broad application prospects components.

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