The possibility of enhancing some properties of self-compacting concrete by adding waste plastic fibers

Al‐Hadithi, Abdulkader Ismail; Hilal, Nahla

doi:10.1016/j.jobe.2016.06.011

Cited by 158 publications

(98 citation statements)

References 35 publications

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“…The L-box ratio of the mix 10R was greater than those of other mixtures, which indicates that 10% replacement of waste aggregate was more successful in improving workability in comparison with other replacements. Al-Hadithi and Hilal also reported the same trend in L-box testing [32]. The results of the J-ring test also confirmed the results obtained by the L-box, V-funnel, and slump flow tests (see Figure 12).…”

Section: Mechanical Testssupporting

confidence: 79%

“…However, 30%-50% replacement decreased the slump flow in comparison with that of the control sample. Al-Hadithi and Hilal reported that slump flow diameters ranging from 650 to 780 mm were obtained for the Self Compacting Concrete (SCC) with plastic waste replacement [32]. For all the mixes, although the HRWRA percentage increased with an increased amount of waste aggregate to maintain an acceptable slump, a reduction in the slump flow was seen with increasing waste material content.…”

Section: Mechanical Testsmentioning

confidence: 98%

“…However, using waste aggregates for more than 30% kept the V-funnel values greater than 12 seconds, which indicated an inappropriate flowability and a viscosity too high for being flowable. Al-Hadithi and Hilal found that the addition of waste plastic increases both T500 slump flow and V-funnel flow times [32]. Figure 11 shows the results of the L-box test.…”

Section: Mechanical Testsmentioning

confidence: 98%

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Towards Eco-Flowable Concrete Production

2020

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Environmental concerns have increased due to the amount of unused/expired plastic medical waste generated in hospitals, laboratories, and other healthcare facilities, in addition to the fact that disposing of such wastes with extremely low degradation levels causes them to remain in the environment for extended periods of time. These issues have led researchers to develop more environmentally friendly alternatives for disposing of plastic medical waste in Australia. This study is an attempt to assess the impacts of using expired plastic syringes as fine aggregate on fresh and hardened characteristics of flowable concrete, which might provide a solution to environmental concerns. Six mixtures of flowable concrete with water-to-cement ratios of 0.38 were studied. It was found that using recycled aggregate in up to 20% can improve the workability and increase the V-funnel values of flowable concrete mixtures. However, using waste aggregates in more than 30% caused an inapt flowability. Adding waste aggregate at the 30%–50% replacement level led to a decrease in the L-box ratio. To verify the utility and the efficacy of this experiment, the connections between different rheological test measurements were also compared by implementing the Pearson correlation function. The mechanical properties of the mixes containing recycled aggregates were decreased at the age of seven days; however, at later ages, waste aggregates increased the strength at the 10%–30% replacement levels.

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Section: Mechanical Testssupporting

confidence: 79%

Section: Mechanical Testsmentioning

confidence: 98%

Section: Mechanical Testsmentioning

confidence: 98%

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Towards Eco-Flowable Concrete Production

2020

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“…Regarding what was stated, several researchers have investigated the effects of the various plastic wastes on the properties of different types of concrete. The most popular waste plastics used to reinforce concrete are polyethylene terephthalate (PET) waste bottle [25][26][27], polyethylene (PE) waste bag [28], polyvinyl alcohol (PVA) fibre [29], and waste polypropylene (PP) fibre [30,31]. Based on their findings, most of the waste plastics are capable of being employed as a fibrous material in the production of sustainable concretes in order to prevent the micro-cracks formation and, thus, enhance the durability of concrete.…”

Section: Introductionmentioning

confidence: 99%

Effect of elevated temperatures on properties of sustainable concrete composites incorporating waste metalized plastic fibres

et al. 2019

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The utilisation of industrial waste in the production of sustainable construction materials has attracted much attention recently due to the saving of vital places for landfills, low-cost of waste materials and also an improvement in the concrete properties. Exposing concrete structures to elevated temperatures causes progressive failure of the macro-and micro-structures of cement paste and, therefore, severe deterioration and damages in the load-bearing capacity. This study explored the effect of waste metalized plastic (WMP) fibres and palm oil fuel ash (POFA) on the performance of concrete exposed to high temperatures of 200, 400, 600 and 800 °C. Four concrete mixes comprising 0 and 0.5% WMP fibres, and 0 and 20% POFA content were cast. Properties studied include mass loss, compressive strength, and ultrasonic pulse velocity. The results showed that the adding of WMP fibre to the concrete mixes significantly improves the concrete performance at elevated temperatures with the lower rate of strength loss along with eliminating the explosive spalling behaviour as compared to those of plain concrete mixes. Furthermore, in comparing the results of compressive strength losses at a high temperature of 800 °C, strength losses were lower for specimens containing 0.5% WMP fibres than those of plain specimens. Moreover, green concrete decreases waste materials, the diminution of harmful impacts on the environment, and leads to sustainable and green cement and concrete industries. Keywords Concrete composites • High temperatures • Waste metalized plastic fibre • Palm oil fuel ash • Residual properties

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“…Borg et al [22] used PET fibres in concrete and reported that the PET fibres lead to a reduction in compressive strength with increasing fibre volume fractions. However, Al-Hadithi and Hilal [23] carried out an experimental study using waste plastic fibres in self compacting concrete and reported the increase in compressive strength with increasing amount of waste plastic.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Mechanical and Durability Properties of Concrete Containing PET Waste

et al. 2018

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Plastic waste is a silent threat to the environment, and their disposal is a serious issue. To sort out this issue, many efforts were made to reuse the plastic waste, but no significant results were achieved. On the contrary, concrete being the widely used construction material is facing problem due to unavailability of ingredient material (sand and coarse aggregate). In this study PET (polyethylene terephthalate) aggregates manufactured from the waste un-washed PET bottles in shredded form were used to partially replace fine aggregate and coarse aggregate in concrete in various percentages (0%, 5%, 10%, 15% and 20%). Various tests like workability, compressive strength, flexural strength, water permeability, abrasion resistance, dynamic and static modulus of elasticity were performed. The micro-structural analysis of the specimens was carried out using an optical microscope. It was found that the workability, compressive strength, flexural strength, dynamic and static modulus of elasticity decreased with the increasing amount of PET waste in concrete. Water permeability of concrete was found to increase with increasing amount of PET waste. In both the cases, i.e., when fine and coarse aggregates were replaced with PET waste, an improvement in the abrasion resistance of concrete was found.

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The possibility of enhancing some properties of self-compacting concrete by adding waste plastic fibers

Cited by 158 publications

References 35 publications

Towards Eco-Flowable Concrete Production

Towards Eco-Flowable Concrete Production

Effect of elevated temperatures on properties of sustainable concrete composites incorporating waste metalized plastic fibres

Assessment of Mechanical and Durability Properties of Concrete Containing PET Waste

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