Efficacy of expanded polystyrene as fine aggregate in cement mortars modified with latex paint as an alternative to polymer admixture

Akinyemi, Banjo A.; Ojediran, J. O.; Olawale, O.; Ayanwola, Stephen

doi:10.1515/jmbm-2020-0016

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…The other explanation could be in relation to the generally smooth surface of polymeric materials. To improve the bonding of the cement matrix with the surface of the thermoplastic material, the application of supplementary cementitious materials, such as silica nanoparticles or fly ash, constitutes a promising approach [67,68]. Because of the reduced water transport capability of the produced W-A composites, it is expected that EPS bead-dosed concrete will be more durable against corrosion and chemical attack (like the penetration of salt solutions from winter roads and pavement maintenance [51]) than traditional dense aggregate-filled composites [13].…”

Section: Microscopic Observationmentioning

confidence: 99%

See 1 more Smart Citation

Utilization of Waste-Expanded Thermoplastic as a Sustainable Filler for Cement-Based Composites for Greener Construction

Pokorný,

Zárybnická,

Ševčík

et al. 2024

Buildings

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Plastics represent an integral part of our everyday lives, with various functions from packaging materials to insulation layers in our buildings. Pure expanded polystyrene (EPS) is a good example of a fully recyclable material. However, once polluted with other materials or substances, EPS becomes a serious environmental burden. In this work, waste EPS for the production of greener building composites with balanced properties and utility value was investigated. Natural aggregate (2/4 mm) was substituted with corresponding fractions of a thermoplastic alternative in portions of 25, 50, 75, and 100 vol.%. The comprehensive experimental investigation evaluated physical and mechanical properties, heat transport and accumulation, and water absorption characteristics. Due to the uniformly distributed plastic particles in the hardened cement-based matrix, the data revealed an important reduction in the dead weight of produced mortars, which also reduced thermal conductivity by up to 47%. On one hand, lightweight mortars showed partially reduced mechanical resistivity; on the other hand, the EPS bead-modified structure turned out to be effective in liquid water transport reduction.

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Section: Microscopic Observationmentioning

confidence: 99%

Section: Microscopic Observationmentioning

confidence: 99%

Utilization of Waste-Expanded Thermoplastic as a Sustainable Filler for Cement-Based Composites for Greener Construction

Pokorný,

Zárybnická,

Ševčík

et al. 2024

Buildings

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“…The usage of plastic aggregates in concrete leads to reduce the brittle nature in concrete which will help to increase the sustainability of load carrying capacity of the structures (9) . Usage of this plastic waste will help to reduce the usage of natural aggregates and also leads to the decrease in the usage of natural resources (10) .…”

Section: Introductionmentioning

confidence: 99%

Effect of Polystyrene Waste on Concrete at Elevated Temperature

Rajaram¹,

Kandasamy²,

Ravichandran³

et al. 2022

IJST

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Objectives:The purpose of the present study is to examine the thermal and impact behaviour of the concrete containing polystyrene waste as aggregates. Methods: The concrete specimens were cast and cured in a conventional way to examine the mechanical behaviour of the concrete. A separate equipment was prepared to determine the impact strength of the concrete as per ASTM D5420-21. The thermal behaviour of the concrete with plastic aggregates were also examined with reference to IS 7861-1 (1975). Artificial Neural Network was also used to predict and compare the properties between both the conventional and plastic concrete. Findings: The mechanical behaviour of the concrete behaves well at Mix 2 when compared to other mixes. The impact strength of the concrete was found to be 98.375 J at Mix3 which was 20.69% higher than the Mix2. At Mix2 the 7 days compression strength in elevated temperature is 16.79 N/mm 2 which was 4.8% higher than the Mix 1 and 31.74% higher than the Mix 3. At 28 days, the compressive strength of concrete containing 50% replacement of aggregate exposed to temperature 50 o c for 24 hours is 26.84 N/mm 2 which shows a better result and resistance in the thermal condition than the other mixes. ANN also gives reliable predicted values which exhibits a clear relation with the inclusion of the plastic aggregate and concrete matrix with some minimum errors. Novelty: From the experimental investigation it was observed that the plastic concrete fails in the transition zone of concrete due to the weaker bonding between the plastic aggregate and cement matrix. The plastic aggregate has not undergone any crushing failure in the concrete specimens when compared to the conventional aggregate. Thus, this solid polystyrene waste can be used as an alternative material for coarse aggregate in concrete.

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“…Exterior wall insulation materials should be built with sufficient strength, thermal insulation, and heat insulation performance, to achieve building energy conservation and socially sustainable development [ 1 ]. Conventionally, two types of materials have been commonly used, those being organic and inorganic [ 2 ]. The organic materials are represented by EPS and extruded polystyrene plate (XPS), while typical representatives of inorganic materials are rock wool board and perlite [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Composition Design of Cement-Based Expanded-Polystyrene (EPS) Exterior Wall Based on Thermal Insulation and Flame Retardance

Shi

Zhao

Zhang³

et al. 2022

Polymers

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The use of thermal insulated decorative panel materials with low thermal conductivity and high flame retardance is a key step toward energy-saving buildings. However, traditional thermal insulation materials are always highly conductive and inflammable, which restricts their application for new buildings. This study aims to prepare the non-combustible, cement-based EPS mixtures with thermal conductivity lower than 0.045 and density less than 140 kg/m3 and characterize it with mechanical, thermal, and flame retardant properties. The effect of particle size, Silica coated and content of EPS on the physical, mechanical, thermal, and combustion performance are conducted in this paper. The comprehensive indoor tests including density, water absorbing, softening coefficient, compressive strength, tensile strength, moisture susceptibility, thermal conductivity, and scanning electron microscopy (SEM) along with combustion performance are reported to evaluate the effects of several variables on the investigated cement-based nonflammable EPS (CEPS)mixtures. The results show that small and gradation EPS particles significantly improve the comprehensive performance of mixtures. In addition, Silica coated ESP significantly improve the flame retardance of mixtures while reduce the mechanical characteristics slightly. These results contribute to the selection of appropriate materials to enhance the thermal insulation, flame retardance and mechanical properties of CEPS.

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Efficacy of expanded polystyrene as fine aggregate in cement mortars modified with latex paint as an alternative to polymer admixture

Cited by 9 publications

References 23 publications

Utilization of Waste-Expanded Thermoplastic as a Sustainable Filler for Cement-Based Composites for Greener Construction

Utilization of Waste-Expanded Thermoplastic as a Sustainable Filler for Cement-Based Composites for Greener Construction

Effect of Polystyrene Waste on Concrete at Elevated Temperature

Optimizing the Composition Design of Cement-Based Expanded-Polystyrene (EPS) Exterior Wall Based on Thermal Insulation and Flame Retardance

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