Flexural behavior of reinforced recycled aggregate concrete beams under short-term loading

An experimental study on flexural strength of reinforced concrete beams with 100% recycled concrete aggregate

“…Unfortunately, concrete, our most common construction material uses a significant amount of non-renewable resources. Consequently, many researchers have investigated the use of recycled materials in the production of concrete such as fly ash [1][2][3][4][5][6][7] and recycled aggregate [8][9][10][11][12][13][14][15][16][17].…”

“…They also concluded that RCA replacement level does not significantly affect the cracking ultimate moment of beams. Ignjatovic et al [15] studied nine full scale beams with 0%, 50%, and 100% recycled coarse aggregate and 0.28%, 1.46%, and 2.54% longitudinal reinforcement ratio. They reported no noticeable difference between load-deflection behavior, service load deflection, and ultimate flexural strength of RCA and CC beams.…”

Sustainability of the concrete industry: Current trends and future outlook

“…More and more, RAC is being investigated on both macroscopic and microscopic levels. Mechanical and durability-related properties are being tested as well as the structural behaviour of full-scale elements such as beams, columns or slabs [22], [23].…”

Flexural behaviour of recycled aggregate concrete graded slabs

“…Several studies on the structural behavior of RAC have been performed. The researches carried out on the beams showed that the flexural capacity of RAC beams were similar to that of the Natural Aggregate Concrete (NAC) beams [4][5][6]. The crack width of RAC beams was larger than that of NAC beams, while the flexural stiffness of RAC beams was lower compared with that of NAC beams.…”

“…The crack width of RAC beams was larger than that of NAC beams, while the flexural stiffness of RAC beams was lower compared with that of NAC beams. The plane section assumption was still suitable for RAC beams [4]. Maruyama et al [7] considered that the use of expansive agent would reduce the crack width and the measured crack width decreased by 20% ~ 30% less than the theoretical value.…”