Performance of rubberised reinforced concrete members under cyclic loading

Elghazouli, A.Y.; Bompa, D.V.; Ruiz-Teran, Ana M.; Stafford, Peter J.

doi:10.1016/j.engstruct.2018.03.090

Cited by 62 publications

(54 citation statements)

References 43 publications

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“…The selected case studies were further analyzed in depth by verifying the effective relevance of their content with the aim of this study. Following this exclusion principle, 11 publications [28][29][30][31][32][33]35,36,[38][39][40] were not included in this research as follows: Naito et al and Kashani et al [28,30] did not indicate the type of cement and aggregate used in their study. Kaloush et al [29], Ismail et al [31] and Raffoul et al [35] did not keep constant the mix design when adding the rubber to concrete, so that the comparison with the reference material is not possible.…”

Section: Analysis Of Bibliographymentioning

confidence: 99%

“…Mendis et al [36] and Elghazouli et al [40] did not make compression tests. Aslani et al [38] and Wang et al [39] used iron or steel fibers to enhance the mechanical performance. Whereas six publications [19,23,34,[41][42][43] were not included for other specific reasons, namely the study by Rahman et al [41] was excluded since it focused on the effect of different plasticizers, the one by He et al [23] because it is mainly focused on the adhesion phenomena occurring between concrete and rubber, the two studies by Najim et al [19,42] together with the one by Siddique et al [43] and Roychand et al [26] since they are review articles, and lastly the one written by Taha et al [34] because it presents issues related to the mix design and the relative composition quantification.…”

Section: Analysis Of Bibliographymentioning

confidence: 99%

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An Analytical Mini-Review on the Compression Strength of Rubberized Concrete as a Function of the Amount of Recycled Tires Crumb Rubber

et al. 2020

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Since waste tires constitute a serious environmental concern, several studies are devoted to the use of finely divided recycled rubber for the production of rubberized concrete by partial substitution of the mineral aggregate fraction. The introduction of rubber into concrete presents several advantages (e.g., improvement of toughness and thermal/electrical/acoustic insulation capacities). Unfortunately, the addition of a high content of rubber into concrete causes an important loss of mechanical resistance of the final composite. In this context, several scientific studies are devoted to investigate the best technical solutions for favoring the interfacial adhesion between rubber and cement paste, but the interpretation of the literature is often misleading. To overcome this issue, the metadata extrapolated from the single scientific works were critically re-analyzed, forming reference diagrams where the variability fields of the different rubber concrete formulations (in terms of mechanical responses as a function of the rubber content) were defined and the best performances discussed. This study evidenced the twofold role of reference diagrams, able in both presenting the data in an unambiguous manner (for a successful comparison) and providing the guidelines for future works in this research field.

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Section: Analysis Of Bibliographymentioning

confidence: 99%

Section: Analysis Of Bibliographymentioning

confidence: 99%

An Analytical Mini-Review on the Compression Strength of Rubberized Concrete as a Function of the Amount of Recycled Tires Crumb Rubber

et al. 2020

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“…Details of the 16 mm and 20 mm rebar geometry are shown in Figure 5, whilst the material properties are given in Table 2. These types of reinforcement bars are widely used in UK practice and in research [33,34], and offer good bond response with bond parameters above 4.0 [35].…”

Section: Experimental Programme 21 Specimens and Materialsmentioning

confidence: 99%

Monotonic and cyclic performance of threaded reinforcement splices

Bompa

Elghazouli

2018

Structures

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This paper examines the fundamental uniaxial monotonic and cyclic response of reinforcement bars connected with threaded mechanical couplers. Based on a survey of available splicing forms, two types of threaded couplers with different geometric configurations, namely 'parallel threaded couplers' and 'parallel threaded sleeve couplers' are selected for detailed assessment. An experimental study consisting of twenty-four bare (in-air) and embedded (in-concrete) specimens incorporating threaded couplers and non-spliced counterparts, is described. The results enable direct assessment of strength as well as complete deformation characteristics, including the post-cracking and post-yield response, for both monotonic and cyclic conditions. After describing the material properties and specimen details, the main observations are reported based on detailed measurements of crack kinematics including crack width and spacing through a digital image correlation system. Complementary numerical studies, undertaken using nonlinear finite element procedures which are validated against the tests, enabled supplementary parametric investigations accounting for wider ranges of coupler geometries. The findings show that existing guidelines may be used for assessing the crack width and spacing, by accounting for the characteristic bond behaviour at the rebar and coupler regions. The complete deformational response may be obtained by using a suggested stiffness reduction factor that depends on the coupler geometry. Several 'in-air' performance parameters may also be used as a basis for the selection and implementation of couplers in applications requiring ductile member behaviour. , 16 (2018), 358-372. Structures

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“…On the other hand, a smaller number of authors investigated the self-compacting rubberized concrete (SCRC) in terms of concrete used for structural elements [8,[14][15][16]. The advantages of using recycled rubber as a substitute material for natural fine and/or coarse aggregate in concrete such as increased ductility, reduced total concrete mass, improved dynamic properties [17][18][19][20][21][22], increased freeze-thaw resistance [23][24][25][26][27], increased cracking resistance [16,28], increased fracture energy [22,29,30], and concrete resistance to tensile stresses [30] provide sufficient reasons to continue experimental research and laboratory work on reinforced concrete elements and system (columns, beams, frames) with a certain percentage of recycled rubber powder Dolomite powder, size < 0.063 mm, from a local quarry, with a specific gravity of 2.97 g/cm 3 and Blaine fineness of 5206 cm 2 /g was used as a filler. The density of cement, silica fume, and dolomite powder was tested according to ASTM C188-16:2011 [51].…”

Section: Introductionmentioning

confidence: 99%

Prediction Models for the Mechanical Properties of Self-Compacting Concrete with Recycled Rubber and Silica Fume

et al. 2020

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The paper aims to investigate the influence of waste tire rubber and silica fume on the fresh and hardened properties of self-compacting concrete (SCC) and to design multivariate regression models for the prediction of the mechanical properties of self-compacting rubberized concrete (SCRC). For this purpose, 21 concrete mixtures were designed. Crumb rubber derived from end-of-life tires (grain size 0.5–3.5 mm) was replaced fine aggregate by 0%, 5%, 10%, 15%, 20%, 25%, and 30% of total aggregate volume. Silica fume was replaced cement by 0%, 5%, and 10% of the total cement mass. The optimal replacement level of both materials was investigated in relation to the values of the fresh properties and mechanical properties of self-compacting concrete. Tests on fresh and hardened self-compacting concrete were performed according to the relevant European standards. Furthermore, models for predicting the values of the compressive strength, modulus of elasticity, and flexural strength of SCRC were designed and verified with the experimental results of 12 other studies. According to the obtained results, mixtures with up to 15% of recycled rubber and 5% of silica fume, with 28 days compressive strength above 30 MPa, were found to be optimal mixtures for the potential future investigation of reinforced self-compacting rubberized concrete structural elements.

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Performance of rubberised reinforced concrete members under cyclic loading

Cited by 62 publications

References 43 publications

An Analytical Mini-Review on the Compression Strength of Rubberized Concrete as a Function of the Amount of Recycled Tires Crumb Rubber

An Analytical Mini-Review on the Compression Strength of Rubberized Concrete as a Function of the Amount of Recycled Tires Crumb Rubber

Monotonic and cyclic performance of threaded reinforcement splices

Prediction Models for the Mechanical Properties of Self-Compacting Concrete with Recycled Rubber and Silica Fume

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