Anti-vibration characteristics of rubberised reinforced concrete beams

Rahman, Mujib; Al-Ghalib, Ali; Mohammad, Fouad

doi:10.1617/s11527-013-0151-0

Cited by 18 publications

(8 citation statements)

References 13 publications

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“…Three studies investigated the damping of reinforced rubberized concrete members 26–28 . The damping ratio as a function of rubber content from these studies is presented in Figure 3.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Three studies investigated the damping of reinforced rubberized concrete members. [26][27][28] The damping ratio as a function of rubber content from these studies is presented in Figure 3. Youssf et al 28 used reinforced cantilever column specimens, whilst Hassanli et al 26 and Rahman et al 27 used reinforced simply supported beam specimens.…”

Section: Rubberized Concrete: Plain and Reinforcedmentioning

confidence: 99%

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Effect of reinforcing and crack width on the vibration damping capacity of rubberized concrete beams

Liu

Palermo

Chiaro

2022

Structural Concrete

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The damping of simply supported rubberized concrete beams was measured and compared against conventional concrete beams in their uncracked and cracked states. The variables controlled were: rubber content (10% and 20% by total volume of aggregates replaced), reinforcing content, axial load, and damage state. Impact hammer-induced free-vibration was used to excite the specimens and quasi-static four-point bending used to damage the beams.Rubberized concrete displayed a measurable increase in damping relative to ordinary concrete in both the uncracked and cracked states. It was found that reinforcing appears to reduce the damping of all beam specimens in their undamaged state compared to unreinforced counterparts. No relationship was found between reinforcing ratio and damping. For crack widths up to 0.1 mm a nonlinear monotonic increase in damping was observed. Damping measured throughout the entire pushover response of the beams was found to follow a skewed-shaped bell curve. Compressive axial load was found to reduce the damping of the beams. The shape of the free vibration decay envelopes was examined. Rubber was found to make the damping response more viscous-like.Whilst reinforcing made the shapes of the decay curves more similar between beams made of different concrete types. No clear evidence for friction damping due to cracking was found. For all beams, based on the free-vibration response, it was found that the damping exhibited by both plain and reinforced concrete is not a true exponential decay curve. This means that the damping calculated by the logarithmic decrement method will depend on the choice of interval selected. A method for standardizing the implementation of the logarithmic decay method to avoid arbitrary choices of intervals and allow for fairer crossstudy comparison of damping values was therefore proposed. K E Y W O R D Sdamping, free-vibration, post-tensioned concrete, reinforced concrete, rubberized concrete, vibration Discussion on this paper must be submitted within two months of the print publication. The discussion will then be published in print, along with the authors' closure, if any, approximately nine months after the print publication.

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“…Three studies investigated the damping of reinforced rubberized concrete members 26–28 . The damping ratio as a function of rubber content from these studies is presented in Figure 3.…”

Section: Literature Reviewmentioning

confidence: 99%

Section: Rubberized Concrete: Plain and Reinforcedmentioning

confidence: 99%

Effect of reinforcing and crack width on the vibration damping capacity of rubberized concrete beams

Liu

Palermo

Chiaro

2022

Structural Concrete

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“…The previous literature was mainly about the properties of unpretreated rubberized concrete without damage. As a green potential concrete material, the dynamic properties of RUC have become an important research topic in recent years [ 34 , 35 , 36 , 37 , 38 ]. Chi et al [ 39 ] and Xue and Shinozuka [ 40 ] researched the energy-dissipation capability of rubberized concrete, and showed that the concrete curvature ductility and damping ratio were enhanced significantly by replacing aggregate with rubber particles.…”

Section: Introductionmentioning

confidence: 99%

“…Xue and Shinozuka [ 40 ] reported that the damping ratio of the RUC mixed with 15% rubber particles with a maximum size of 6 mm increased by 62% compared with that of NC. The damping ratio of the concrete whose coarse or fine aggregate was replaced with rubber particles was enhanced significantly [ 26 , 37 , 41 ]. The particle size, content and mixing method of rubber particles had significant effects on the concrete’s dynamic properties [ 26 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Properties of Pretreated Rubberized Concrete under Incremental Loading

et al. 2021

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Recycling scrap tyres as alternative aggregates of concrete is an innovative option. To clarify the dynamic properties of the pretreated rubberized concrete with some cumulative damage, the natural frequency, flexural dynamic stiffness, and damping ratio of the specimens under incremental stress level were investigated in this paper. The results indicated that the pretreatment of rubber particles improved the strength, ductility, and crack resistance of the rubberized concrete. The reduction of the flexural dynamic stiffness was clarified with the increase of concrete stress level. The addition of the pretreated rubber particles enhanced the concrete energy dissipation capacity during the destruction, and the specimen dissipated more energy with the increase of rubber content before its failure.

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“…The importance of recycling of waste tires, coupled with the interest in overcoming some concrete defects, has motivated a significant body of research related to CRC. Different types of tests with different volumetric fractions were conducted to investigate the static, dynamic, and fatigue mechanical behaviors of CRC …”

Section: Introductionmentioning

confidence: 99%

Experimental study on the relationship between acoustic emission energy and fracture energy of crumb rubber concrete

Han

Yang

2018

Struct Control Health Monit

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Energy criterion is one important method of explaining the fracture behavior of a material; however, accurately determining the energy consumed in the fracture process is very difficult. Thirty-six notched 3-point bending specimens of crumb rubber concrete (CRC) beams with different rubber contents of 0%, 5%, 10%, and 15% were tested, and simultaneously acoustic emission (AE) released was recorded to investigate the relationship between the AE energy and the fracture energy of CRC during the fracture process. The test resultsshow that the energy dissipation capacity increases with the increase of the mixed crumb rubber content. The characteristics of AE sources imply that mixed crumb rubber can effectively improve the crack distribution of CRC.Equations are proposed to obtain the fracture energy of CRC for different rubber contents by knowing AE energy. The present experimental study can be useful for the quantitative measurement of the fracture energy of CRC.

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Anti-vibration characteristics of rubberised reinforced concrete beams

Cited by 18 publications

References 13 publications

Effect of reinforcing and crack width on the vibration damping capacity of rubberized concrete beams

Effect of reinforcing and crack width on the vibration damping capacity of rubberized concrete beams

Dynamic Properties of Pretreated Rubberized Concrete under Incremental Loading

Experimental study on the relationship between acoustic emission energy and fracture energy of crumb rubber concrete

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