Behavior of Reinforced Concrete Beams with Recycled Concrete Coarse Aggregates

Knaack, Adam M.; Kurama, Yahya C.

doi:10.1061/(asce)st.1943-541x.0001118

Cited by 139 publications

(82 citation statements)

References 11 publications

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“…They also reported no significant decrease in flexural capacity up to 30% RCA replacement level. Knaack and Kurama [17] tested 150 Â 230 mm cross section and 2000 mm long beams. They used RCA from late 1920s foundation and with both 50% and 100% replacement level.…”

Section: Introduction and Research Significancementioning

confidence: 99%

“…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].…”

Section: Introduction and Research Significancementioning

confidence: 99%

See 1 more Smart Citation

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

Arezoumandi

Smith

Volz

et al. 2015

Engineering Structures

164

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Section: Introduction and Research Significancementioning

confidence: 99%

Section: Introduction and Research Significancementioning

confidence: 99%

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

Arezoumandi

Smith

Volz

et al. 2015

Engineering Structures

164

View full text Add to dashboard Cite

“…There have also been studies that show that the incorporation of RCA has no significant influence on the shear strength of beams (Bilal and Ali, 2017;González-Fonteboa and Martínez-Abella, 2007;Knaack and Kurama, 2015;Kim et. al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of recycled concrete aggregate on the shear behavior of reinforced concrete panels

Zhang¹,

Kuder²,

Lehman³

et al. 2019

Sustainable Construction Materials and Technologies (SCMT)

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Due to its design versatility, availability, and cost efficiency, concrete continues to play a dominant role in the construction industry. Typical concrete production requires a significant amount of nonrenewable resources. One way to improve the sustainability of this material is to use recycled concrete aggregate (RCA) in place of virgin aggregate. The purpose of this study is to investigate the use of RCA in reinforced concrete panels. Three reinforced concrete panels were cast: normal concrete aggregate (NCA), 25% RCA, 50% RCA and 100% RCA. The data show the compressive strength and elastic modulus of the concrete are reduced with increasing amount of RCA, while the tensile strength does not change significantly. For the reinforced concrete panels, the shear response is affected by inclusion of RCA, with a reduction in the initial stiffness and also an earlier observance of the first crack.

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“…Recently, the structural performances of RAC elements and structures have been widely investigated. Knaack and Kurama, Mahdi et al, Ignjatovic et al studied the flexural behavior of RAC beams. The experimental results indicate that the flexural performances of RAC beams are similar to those of normal concrete beams.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on frame structures with recycled aggregate concrete under lateral cyclic loads

Guo

Chen

Fan

et al. 2017

Structural Concrete

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This paper presents an experimental study on the seismic behavior of frame structures made with recycled aggregate concrete (RAC). Three 1:2 scaled frame specimens were tested under lateral cyclic loads and constant vertical load. One of these frames was conventional concrete frame, while the remaining two frames were RAC frames with a recycled coarse aggregate (RCA) replacement percentage of 25 and 50%, respectively. The structural performances, in terms of the failure pattern and mechanism, ultimate lateral load capacity, hysteretic response, backbone curve, ductility capacity, energy dissipation capacity and stiffness degradation were analyzed in detail. The effect of RCA replacement percentage on the seismic performance of RAC frames was investigated carefully. The experimental results indicate that the seismic performance of RAC frame is similar to that of conventional concrete frame and not significantly affected by the incorporation of RCA. All of the tested frames behaved with the same failure pattern, which is a ductile failure mechanism. The average value of the ductility coefficient and the equivalent viscous damping ratio of the RAC frame are 3.55 and 0.089, respectively. The RAC frame structure with an RCA replacement percentage of 50% still has adequate capabilities of ultimate strength, deformation and energy dissipation and is able to withstand an earthquake attack.

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Behavior of Reinforced Concrete Beams with Recycled Concrete Coarse Aggregates

Cited by 139 publications

References 11 publications

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

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

Effect of recycled concrete aggregate on the shear behavior of reinforced concrete panels

Experimental study on frame structures with recycled aggregate concrete under lateral cyclic loads

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