Structural Performance of Recycled Aggregate Concrete Confined by Spiral Reinforcement

Kim, Sang Woo; Lee, Bum-Sik; Kim, Young-Seek; Lee, Sunhee; Kim, Kil-Hee

doi:10.3130/jaabe.17.541

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…While studying the flexural bond behavior of reinforced RAC, Dong et al [13] found a similar mode of reinforcement failure in RAC and NAC and further revealed a decrease in bond strength with an increase in RA content. Kim et al [14] investigated the behavior of RAC confined by spiral reinforcement. The study parameters included replacement level of NA with RA and steel ratio and yield strength of spiral reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Recycled Aggregates on the Energy Dissipation Capacity of RC Beam subjected to Reverse Cyclic Flexural Loading

Riaz

Hameed

Akmal

et al. 2021

Mehran Univ. res. j. eng. technol.

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The energy dissipation capacity of concrete is an important aspect for a Reinforced Concrete (RC) structure to be seismically resistant. Various types of concrete incorporating sustainable materials are being developed these days such as recycled aggregate concrete. Determination of energy dissipation capacity of such new types of concrete is of great importance for their application in RC structures which are to be constructed in seismically active areas. In this regard, the experimental study presented in this contribution investigated the energy dissipation capacity of RC beams constructed using recycled aggregate concrete and subjected to three different deflection amplitude levels of reverse cyclic flexural loading. For this purpose, a total of 20 RC beams of cross section 75 x 150 mm and length of 1350 mm were cast using five different concrete compositions and tested. Among five different concrete compositions, one was control concrete containing 100% natural aggregates while the remaining four compositions were of recycled aggregate concrete containing natural and recycled aggregates. Four replacement levels (25%, 50%, 75%, and 100%) of natural aggregates with recycled aggregates were examined. Results indicated that the amplitude level of imposed deflection is an important factor which influenced the value of energy dissipated by RC beams. Further, results showed that RC beam constructed using recycled aggregate concrete containing 25% recycled aggregates exhibited energy dissipation capacity similar to or even better than that of control RC beam containing 100% natural aggregates.

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Section: Introductionmentioning

confidence: 99%

Effect of Recycled Aggregates on the Energy Dissipation Capacity of RC Beam subjected to Reverse Cyclic Flexural Loading

Riaz

Hameed

Akmal

et al. 2021

Mehran Univ. res. j. eng. technol.

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Experimental and theoretical research on the mechanical performance of totally recycled concrete under triaxial compression after high temperatures

Meng

Zhang

et al. 2020

Construction and Building Materials

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Behavior of Recycled Aggregate Concrete Slender Column under Concentric Axial Loading

Ali,

Hasan,

Mohammed

2023

E3S Web Conf.

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This investigation investigates the structural behavior of slender reinforced concrete RC containing different RCA replacement portions in addition to the slenderness effect. To perform this, eight (8) slender RC columns with two main types of transverse reinforcement (ties and spiral reinforcement) and three recycled coarse aggregate RCA replacement percentages (25, 50, and 100%) were modeled and subjected to axial concentric loading. The gathered experimental results are monitored and analyzed to better estimate the structural characteristics of the RC slender column (The ultimate carrying load, first cracking load, load-displacement curve, and load-strain response). The results showed that replacing NCA with (25, 50, and 100%) of RCA reduced the ultimate capacity of tied RC columns by (13.41, 14.07, and 23.33%), respectively, and reduced their first cracking load values by (19.64, 15.96, 22.50%), respectively. The reduction in ultimate load capacity and the first cracking load were (4.10, 17.33, 22.63%) and (12.26, 23.15, 25.00%) for spirally RC columns, respectively. Spiral transverse reinforcement slightly increases the carrying load capacity compared to tie reinforcement. It delays the fast propagation of the first cracking load, furthers the effect of spiral reinforcement in improving the deformation capacity, reducing the longitudinal and lateral mid-height strains, and developing the flexural stiffness of the load-displacement curve.

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Structural Performance of Recycled Aggregate Concrete Confined by Spiral Reinforcement

Cited by 4 publications

References 9 publications

Effect of Recycled Aggregates on the Energy Dissipation Capacity of RC Beam subjected to Reverse Cyclic Flexural Loading

Effect of Recycled Aggregates on the Energy Dissipation Capacity of RC Beam subjected to Reverse Cyclic Flexural Loading

Experimental and theoretical research on the mechanical performance of totally recycled concrete under triaxial compression after high temperatures

Behavior of Recycled Aggregate Concrete Slender Column under Concentric Axial Loading

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