Flexural bond behavior of reinforced recycled aggregate concrete

Hao, Dong; Song, Yu; Cao, Wanlin; Sun, Wenjuan; Zhang, Jianwei

doi:10.1016/j.conbuildmat.2019.03.238

Cited by 40 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is could result from the decrease in bonding in the RCA beams. e interfacial bonding between RCAs and mortar is known to be less substantial than that between NCAs and mortar [32].…”

Section: Load-deflection Relationshipmentioning

confidence: 99%

Structural Behavior of Concrete Beams Containing Recycled Coarse Aggregates under Flexure

Yang

Park

Kim

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The structural behavior of concrete beams containing recycled coarse aggregates (RCAs) was investigated in this study using detailed experimental data. Twelve concrete beams were tested in the experimental program: nine beams with varying RCA contents and three control beams with natural coarse aggregates (NCAs). The parameters for investigating the structural behavior of the RCA concrete beams under flexure were the RCA content (30%, 50%, and 100%) and tensile rebar ratio (0.50%, 0.79%, and 1.14%). The crack pattern of the RCA beams was similar to that of the NCA beams; however, the RCA beams exhibited smaller crack spacing than the NCA beams. The flexural strength was slightly affected by the RCA content. However, the ductility of the beam was not significantly influenced by the RCA content. A comparison of the experimental results and the calculations from the ACI 318 and EC 2 provisions for the flexural strength showed that the current provisions conservatively predicted the flexural strength of the RCA concrete beams.

show abstract

“…is could result from the decrease in bonding in the RCA beams. e interfacial bonding between RCAs and mortar is known to be less substantial than that between NCAs and mortar [32].…”

Section: Load-deflection Relationshipmentioning

confidence: 99%

Structural Behavior of Concrete Beams Containing Recycled Coarse Aggregates under Flexure

Yang

Park

Kim

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Peng et al [12] investigated fatigue performance of RAC and revealed that fatigue life, residual strength, and stiffness of RAC decreased with an increased replacement level of RA. 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.…”

Section: Introductionmentioning

confidence: 92%

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.

View full text Add to dashboard Cite

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.

show abstract

“…These ramifications highlight the importance of developing efficient environmentally friendly tools and establishing the basic principle of using recycled coarse aggregates (RCA) in construction [1]. Studies on the use of RCA for concrete applications and pavement stabilization schemes have recently been conducted [2][3][4]. RCA will surely reduce the carbon footprint caused by rapid construction development, which will benefit the concrete sector.…”

Section: Introductionmentioning

confidence: 99%

Properties of Normal Strength Concrete With Treated Crushed Brick and Recycled Concrete as Coarse Aggregate

Ayada

Al-Shafi’i

2022

JEASD

View full text Add to dashboard Cite

The results of a research program conducted at the University of Mustansiriayah in Iraq to analyze the qualities of concrete created with crushed bricks and crush concrete are presented in this paper. To make a suitable aggregate, these materials were crushed. Some aggregates were treated, while others were not. The properties investigated were the workability and the density of fresh the aggregates of crushed bricks and crush concrete were treated in some mixtures and others were not treated. The properties investigated were the workability and the density of fresh concrete, and the compressive strength and tensile splitting strength behavior of hardened concrete. Different replacement ratios (0, 50%, and 100%) were investigated. The concrete rustles produced with recycled aggregates were compared with a reference concrete produced with natural coarse aggregates currently used in Iraq. Using surface treatment with silicate solution, when comparison to RCA50 and RCA100 samples, TRCA50 and TRCA100 compressive strength improved by roughly 5.05 percent and 5.9 percent after 28 days, respectively. And came closer to concrete with natural aggregate R, and improved 3.25% and 4.6% in TBR100 and TBR50, respectively compared. With the BR100 and BR50 respectively, they added a cross resistance of R for TRAC100% when silica fume was added, approaching R at TBR100%. Aggregates indicate that this type of concrete can be used in various precast applications.

show abstract

Flexural bond behavior of reinforced recycled aggregate concrete

Cited by 40 publications

References 32 publications

Structural Behavior of Concrete Beams Containing Recycled Coarse Aggregates under Flexure

Structural Behavior of Concrete Beams Containing Recycled Coarse Aggregates under Flexure

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

Properties of Normal Strength Concrete With Treated Crushed Brick and Recycled Concrete as Coarse Aggregate

Contact Info

Product

Resources

About