Shear Strength Behavior of Fiber Reinforced Recycled Aggregate Concrete Beams
(*) Corresponding author
Recycled Aggregate Concrete (RAC) is produced through the process of crushing, sieving the old concrete and replacement of the natural aggregate. This paper investigates experimentally and numerically the shear behavior of 74 reinforced concrete beams constructed from RAC. Latest researches confirm the reduction of shear strength due to the use of recycled aggregate instead of natural one. Therefore, one of the main targets of this study is to compensate such reduction in shear strength by using steel fibers. In order to do that, twelve concrete beams (150 mm width, 230 mm height and 1247 mm length) with different longitudinal reinforcement ratio have been constructed. Further, different replacement ratios of recycled aggregate with 0%, 50% and 100% have been introduced. Additionally, volume fractions of steel fiber of 0%, 0.5, 1% and 1.5% have been used to improve the shear behavior. Four points load is used for testing the specimens until failure. Volume fraction of steel fibers, compressive strength of RAC, replacement ratios of RA, shear span-depth ratio and longitudinal reinforcement ratio have been the parameters considered. Ultimate load and load-deflection curve have been studied through the experimental program. It has been found out that adding 0.5% steel fiber to Recycled Aggregate Concrete (RAC) specimen results in increasing the shear strength by 5% compared with Natural Aggregate Concrete (NAC) specimen without steel fiber. The modes of failure of RAC beams in shear are similar to the ones of NAC beams. Finite element analysis has been utilized to simulate the tested beams through ABAQUS software program. Further, the verified numerical model has been used to collect more data through a parametric study. Based on the parametric study, the compressive strength of concrete can be described by a square root function to the shear strength of RAC. Through the 74 test results (62 numerical results and 12 experimental results) of a wide range of most effective variables, a proposed design equation to predict the shear strength of fiber reinforced recycled aggregate concrete (FRRAC) beams has been presented.
Copyright © 2021 Praise Worthy Prize - All rights reserved.
N. Tošic, S. Marinkovic, and I. Ignjatovic, , A database on flexural and shear strength of reinforced recycled aggregate concrete beams and comparison to Eurocode 2 predictions, Engineering Structures 7(5), 2019.
I. Ignjatovic', B. Snezˇ., S. Marinkovic', and N. Tošic, Shear behaviour of recycled aggregate concrete beams with and without shear reinforcement, Engineering Structures 141, 2017.
H. Chaboki, M. Ghalehnovi, A. Karimipour, J. Brito, and M. Khatibinia, Shear behaviour of concrete beams with recycled aggregate and steel fibres, Construction and Building Materials 204, 809-827, 2019.
F. Ceia, J. Raposo, M. Guerra, E. Júlio, J. Brito, Shear strength of recycled aggregate concrete to natural aggregate concrete interfaces Construction and Building Materials 109 139-145, 2016.
E. Etman, H. Afefy, A. Baraghith, and S. Khedr, Improving the shear performance of reinforced concrete beams made of recycled coarse aggregate, Construction and Building Materials 185, 310-324, 2018.
B. Hamad, A. Dawi, A. Daou, and G. Chehab, Studies of the effect of recycled aggregate on flexural, shear and bond splitting beam structural behavior, Case Studies in Construction Materials, 322-332, 2018.
B. Hanumesh, B. Harish, and N. Ramana, Influence of Polypropylene Fibres on Recycled Aggregate Concrete, Materials Today: Proceedings 5, 1147-1155, 2018.
H. Katkhuda, and N. Shatarat, Shear behavior of reinforced concrete beams using treated recycled concrete aggregate, Construction and Building Materials 125, 63-71, 2016.
M. Leone, G. Centonze, D. Colonna, Micelli F., M. Aiello, Fiber-reinforced concrete with low content of recycled steel fiber: Shear behaviour, Construction and Building Materials 161, 141-15, 2018.
S. Pradhan, S. Kumar, and S. Barai, Shear performance of recycled aggregate concrete beams: An insight for design aspects, Construction and Building Materials 178, 593-611, 2018.
K. Rahala, Shear strength of recycled aggregates concrete, Procedia Engineering 210, 105-108, 2017.
K. Rahal, and Y. Alrefaei, Shear strength of longitudinally reinforced recycled aggregate concrete beams, Engineering Structures 145, 273-282, 2017.
S. Waseem, Shear transfer strength of normal and high-strength recycled aggregate concrete - An experimental investigation, Construction and Building Materials 125, 29-40, 2016.
N. João, J. Pachecoa, D. Jorge, C. Carlos, E. Luís, Uncertainty of shear resistance models: Influence of recycled concrete aggregate on beams with and without shear reinforcement, Engineering Structures, 204, 1-14, 2019.
B. Ayman, A. Mohammad, and H. Mohammad, Predicting the contribution of recycled aggregate concrete to the shear capacity of beams without transverse reinforcement using artificial neural networks, Case Studies in Construction Materials, 00414 ,1-13, 2020.
ASTM C33-13: Standard specification for concrete aggregates.
ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-14).
H. Al-Quraishi, M. Al-Farttoosi, and R. AbdulKhudhur, Tension Lap Splice Length of Reinforcing Bars Embedded in Reactive Powder Concrete (RPC), Structures 19, 362-368, 2019.
Al-Quraishi, H., Hamood, M., Sahmi, N., A New Shear Strength Model for UHPC Corbel, (2018) International Review of Civil Engineering (IRECE), 9 (4), pp. 168-173.
Nuroji, N., Hung, C., Prasetya, B., Han, A., The Behavior of Reinforced Concrete Members with Section Enlargement Using Self-Compacting Concrete, (2020) International Review of Civil Engineering (IRECE), 11 (3), pp. 121-126.
Marcalikova, Z., Sucharda, O., Modeling of Fiber-Reinforced Concrete and Finite Element Method, (2021) International Review of Civil Engineering (IRECE), 12 (1), pp. 11-19.
A. abdulazeez, R. Abdulkhudhur, and H. Al-Quraishi, bond strength behavior for deformed steel rebar embedded in recycled aggregate concrete, J. Eng. Technol. Sci. Vol 53, No.1, PP. 1-18, 2021.
H. Al-Quraishi A. Abdulazeez, R. Abdulkhudhur, Behavior of rubberized concrete in shear, IOP conference series: Material science and Engineering, 4th international conference on engineering science (ICES 2020) pp. 1-9, 2021.
Belarouf, S., Samaouali, A., Gueraoui, K., Rahier, H., Mechanical Properties of Concrete with Recycled Concrete Aggregates, (2020) International Review of Civil Engineering (IRECE), 11 (6), pp. 268-274.
Chernavin, V., Benin, D., Galkina, D., Vorona-Slivinskaya, L., The Effect of the Reinforcing Agent from Construction Waste on the Mechanical Properties of Concrete, (2021) International Review of Civil Engineering (IRECE), 12 (4), pp. 264-270.
Ibrahim, Y., Durability and Structural Performance of Recycled Aggregate Concrete: a Review, (2019) International Review of Civil Engineering (IRECE), 10 (3), pp. 135-141.
- There are currently no refbacks.
Please send any question about this web site to email@example.com
Copyright © 2005-2023 Praise Worthy Prize