Open AccessExperimental Study on Mechanical Properties of New Recycled Concrete Composite Beams
Author(s) -
Junjie Pei,
Guangxiu Fang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/330/2/022107
Subject(s) - composite number , cracking , structural engineering , bearing capacity , materials science , deflection (physics) , load bearing , rigidity (electromagnetism) , beam (structure) , composite material , engineering , physics , optics
We made one of the new composite beam-column joint as tested specimen, and four specimens. By doing the model test under static load, we got some experimental results about specimens. For example, the cracking load, the ultimate bearing capacity, the load-deformation curves and the mechanical characteristic of the composite area of beam-column joint. We get conclusions as follow. The values of cracking load and ultimate bearing capacity of the new composite mixed using concrete and recycled concrete can be calculated by the formulas in Code for design of concrete structures (GB 50010-2010). As the structural style of the whole Cast-in-situ concrete specimen and the new composite mixed using concrete and recycled concrete is different, the law of the development of the deflection is similar, and we put forward modifier formula for calculating the bending rigidity. Adopting the structural with step-shaped composite area at the end of beam is useful for prevent cracks from running on, and the method can enhance its bearing capacity.