Performance of geopolymer concrete containing recycled rubber

Aly, Aly Muhammed; El-Feky, M.S.; Kohail, Mohamed; Nasr, El-Sayed A.R.

doi:10.1016/j.conbuildmat.2019.02.121

Cited by 168 publications

(89 citation statements)

References 27 publications

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“…However, significant reductions in compressive and flexural strength (e.g. up to around 93% reduction depending on the replacement ratio of CR) were observed in either OPC or AAM containing CR (Aly et al, 2019;Dehdezi et al, 2015;Gandoman and Kokabi, 2015;Park et al, 2016;Wongsa et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Wongsa et al (2018) studied the effect of CR on mechanical and thermal properties of AAF and concluded that AAF incorporated 100% CR demonstrated better thermal insulation. The effect of different CR replacement ratios for natural aggregate on mechanical and impact properties of AAS was recently estimated by Aly et al (2019) who found that the proposed AAS incorporating CR can be used in structural elements subjected to dynamic loading. However, significant reductions in compressive and flexural strength (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Zhong

Poon

Chen

et al. 2019

Journal of Cleaner Production

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To mitigate the potential problems of waste tyres and Portland cement greenhouse gas emissions while further promote the sustainable development of construction industry, this paper, for the first time, explores the workability and mechanical properties of crumb rubber alkali-activated fly ash-slag mortar reinforced with recycled tyre steel fibre (RSFRAM) considering different contents of crumb rubber (CR, i.e. 5%, 10% and 15% replacement by volume of fine aggregate) and recycled tyre steel fibre (RTSF, i.e. 0.5% and 1.0% by volume). The results indicate that the inclusion of CR led to a 4.7% to 26.7% improvement in workability of RSFRAM when the RTSF content was low, while the addition of RTSF compensated the strength loss caused by the addition of CR. The combination of CR and RTSF created a synergistic effect on the flexural behaviour of RSFRAM. The optimal mixture was regarded as R5F1.0 (5% CR replacement and 1.0 vol.% RTSF) exhibiting comparable compressive strength, and superior flexural strength (around 171.1% higher), toughness indices (highest among all RSFRAMs) and residual strength factors (higher than 100) compared to the reference mixture without CR and RTSF. In addition, R5F1.0 can meet the strength requirement of concrete (i.e. 28 MPa for basic construction application) and thus suitable for structural applications as a sustainable material.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Zhong

Poon

Chen

et al. 2019

Journal of Cleaner Production

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“…Effective concretes for protective structures in connection with the increasing number of natural and manmade disasters, as well as heightened international tensions, are now of particular importance (Murali and Ramprasad 2018;Fediuk et al 2018a;Yoo et al 2016;Aly et al 2019;Matias et al 2013). These concretes require a special set of characteristics, i.e., compressive strength and tensile strength (Evelson and Lukuttsova 2015;Topçu and Uygunolu 2010;Yu et al 2018), impact strength (Neville and Brooks 2010;Mahakavi et al 2019), dynamic strength (Kim 2019;Bir Singh et al 2019), crack resistance (Fediuk et al 2018b;Elgalhud et al 2017), impermeability (Fediuk et al 2019;Lye et al 2015) and workability (Chithra et al 2016;Pan et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…By the current time, a rather significant number of various composite binders have been developed and tested, unique both from the standpoint of environmental protection, and profitable in terms of capital investments, as well as manufactured and tested on an industrial scale. At the same time, knowing all the advantages of such compositions, due to the effect of various factors, these composites do not have a deserved volume of production capacity at cement and concrete plants and sales markets (Yoo et al 2016;Aly et al 2019;Topçu and Uygunolu 2010).…”

Section: Introductionmentioning

confidence: 99%

Link of Self-Compacting Fiber Concrete Behaviors to Composite Binders and Superplasticizer

Федюк

Mosaberpanah

Lesovik

et al. 2020

ACT

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Composite binders were prepared as novel compositions, on the basis of which fiber reinforced self-compacting concretes (FRSCC) with high rheological, mechanical, dynamical, and impermeability behaviors are created. Rice husk ash, quartz sand, and limestone crushing waste within CEM I and different ratio of superplasticizer were investigated as components of composite binders. Central Composite Face Centered method was used to design the number of experiments and randomizations and then screened by Response Surface Methodology. The validity of models was projected by ANOVA. Replacement of cement by waste composite binders as a supplementary cementitious material has a positive effect on mechanical properties of FRSCC from 30% to around 35% of cement replacement. Adding the superplasticizer improved the performance of FRSCC in all aspects in the given range. Increasing the waste composite binders decreased the vapor permeability and effective diffusion coefficient of FRSCC by improving the hydration rate and decreasing the pores of the concrete matrix. Designed FRSCC has the potential to be used as a material for protective structures, because it is able to provide comprehensive protection against the dynamic effects and penetration of gases.

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“…Many researchers studied various waste and by-product materials that are available in the local market to find a proper substitute for natural aggregate while eliminating the transportation pollution and expenses [19,20]. For example, recycled concrete aggregate [21][22][23][24][25][26][27], recycled tires [28][29][30][31][32], post-consumer glass [33][34][35][36], recycled plastic [37][38][39], and steel by-product aggregate have been suggested a replacement for fine or coarse aggregate [40][41][42][43][44][45][46][47]. Steel slag aggregate, a by-product of the steel manufacturing process, is another possibility.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Water-Cooled and Air-Cooled Slag Aggregate in Concrete: A Solution to the Secular Economy

El-Tair

Bakheet

El-Feky

et al. 2020

Eng

Self Cite

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Aggregates are generally thought of as inert filler within a concrete mix, and a typical concrete mix is comprised of as much as 70–80% of them. They play an essential role in the properties of both fresh and hardened concrete. Nowadays, scientists are aiming to use waste materials, thereby replacing natural aggregates for economic and environmental considerations. This study investigates the effect of the utilization of steel slag by-product aggregates (air- and water-cooled slag) as concrete aggregates on the behavior characteristics of concrete. Various concrete mixtures, with different levels of replacement of slag aggregate (50, 75, and 100%), were conducted in order to find the optimum percentages to improve the microstructure and different properties of concrete (fresh and hardened). The results showed that increasing the fine aggregate replacement percentage led to a decrease in compressive strength values, in contrast with coarse aggregate replaced with slag aggregate. The steel slag aggregates showed potential to be used as replacement for natural aggregate with comparable compressive strength and acceptable workability.

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Performance of geopolymer concrete containing recycled rubber

Cited by 168 publications

References 27 publications

Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Link of Self-Compacting Fiber Concrete Behaviors to Composite Binders and Superplasticizer

Utilization of Water-Cooled and Air-Cooled Slag Aggregate in Concrete: A Solution to the Secular Economy

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