Review on factors influencing thermal conductivity of concrete incorporating various type of waste materials

Misri, Z; Ibrahim, Mohd Halim Irwan; Awal, Abdul; Desa, M S M; Ghadzali, N S

doi:10.1088/1755-1315/140/1/012141

Cited by 21 publications

(6 citation statements)

References 21 publications

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“…The test persisted until a stable state of heat flow was reached, and insulation was applied to prevent heat loss. Heat travelled through the sample's unit length, indicating thermal conductivity, with a temperature change of one unit [29,30]. where HF represents the heat flux, t denotes the thickness of samples, A signifies the area, dT indicates the temperature difference between the plate above the specimen and the one below.…”

Section: Experimental Methodsmentioning

confidence: 99%

Mechanical and thermal properties of rubberized concrete incorporated silica fume

2024

MJET

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Rubberised concrete provides elasticity, energy absorption, lightweight, and excellent acoustic and thermal insulation. Nevertheless, a notable drawback is its reduced compressive strength. To address this, incorporating silica fume emerges as a promising method to enhance compressive strength and overall performance. The current study aims at optimising the mechanical and thermal characteristics of rubberised concrete by incorporating silica fume as an additive. The investigation focuses on identifying the optimal ratio of crumb rubber and silica fume that yields favourable results across various properties, with a particular emphasis on compressive strength and thermal conductivity. Nine concrete mixes were developed, wherein 10% and 20% of the fine aggregate were substituted with two different percentages of crumb rubber. In addition, silica fume was used to substitute 10% and 15% of the cement. The experimental phase involved conducting tests for both compressive strength and thermal conductivity. The findings indicated a progressive decline in compressive strength as the crumb rubber content increased. This trend, however, was counterbalanced by the strengthening influence of silica fume. The density exhibited a decline with higher rubber content, but a marginal increase was observed upon the inclusion of silica fume. Moreover, water absorption tests indicated heightened absorption in the presence of rubber, countered using silica fume. Furthermore, as rubber content increased, thermal conductivity decreased, enhancing the insulating properties of rubberised concrete compared to plain concrete. Silica fume, while slightly diminishing thermal insulation in non-rubberized concrete, exhibited a negligible impact on the insulation qualities of rubberized concrete. Overall, the concrete mix comprising 20% rubber and 10% silica fume demonstrated the best performance in terms of both compressive strength and thermal conductivity. This research provides valuable insights into optimising the properties of rubberised concrete, offering a compelling pathway for sustainable construction practices with enhanced characteristics.

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Section: Experimental Methodsmentioning

confidence: 99%

Mechanical and thermal properties of rubberized concrete incorporated silica fume

2024

MJET

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“…in concrete composition highlights the relation with the type of materials, degree of replacement, mineralogical characteristics of an aggregate, and surrounding humidity, which influence the water/cement ratio, concrete density, porosity, etc. [196].…”

Section: A Thermal Perspectivementioning

confidence: 99%

Building a Greener Future: Advancing Concrete Production Sustainability and the Thermal Properties of 3D-Printed Mortars

Capêto,

Jesus,

Uribe

et al. 2024

Buildings

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The integration of waste materials in extrudable cement mixtures has the potential to make the construction industry more sustainable by reducing carbon footprints and developing eco-friendly materials. This along with advancements in 3D concrete printing (3DCP) provides engineering and architectural benefits by reducing material waste and costs. In this paper, the impact of waste incorporation on properties of mortar and concrete is examined. The use of waste materials, such as pumice, coal slag, agricultural lignocellulosic residues, and recycled rubber tyres, to improve thermal insulation and durability of cementitious composites is discussed. In addition, the incorporation of air-entraining admixtures with surfactant activity is explored for their indirect effect on thermal behaviour, pore size reduction, and enhancement in concrete properties. This review includes important topics such as a strength resistance to freezing and thawing, fire resistance, plasticising effect, and delay in cement hydration. These findings highlight the benefits of using diverse waste materials in construction, providing a multidimensional approach to waste management, cost optimization, and enhanced construction materials in the context of 3DCP.

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“…The low thermal conductivity value of the concrete is an advantageous for the buildings' thermal insulation. Thermal conductivity is used to evaluate a material's ability to transport heat in building insulation [53]. The transitory thermal reaction of a material to a change in temperature is measured by thermal diffusivity (α).…”

Section: Determination Of Thermal Properties Of Kernelrazzo Concretementioning

confidence: 99%

The Impact of Density and Porosity on Thermal Properties of Kernelrazzo Concrete Floor Finish

Owolabi

Abas

2023

ARASET

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Understanding the impact of density and porosity on the thermal characteristics of kernelrazzo concrete floor finish was the study's main goal. Kernelrazzo is a combination of palm kernel shell, marble chippings in place of terrazzo, quarry dust, cement, palm oil fuel ash and water. In this study, it was determined which factors normally have the biggest influence on the thermal development of kernelrazzo concrete by conducting a scan of the literature and specifications. In this study, experiments in the laboratory were carried out at USM's HBP Concrete Lab. The components were mechanically combined in a concrete mixer with the calculated water using the Department of Environment (DoE) method. Concrete mix design for M20 grade is included in the scope of laboratory investigations. Ordinary Portland Cement (OPC), palm oil fuel ash (POFA) was used as an added pozzolana element, and quarry dust, aggregates made from palm kernel shell (PKS), and marble chippings were utilized to create the mixture. By examining kernelrazzo concrete cube samples after proper curing, the study involved estimating density, specific heat, thermal diffusivity, and thermal conductivity. Density is important to control the material's thermal characteristics of kernelrazzo concrete. Lower-density kernelrazzo concrete is a sign of more porosity. In lower-density kernelrazzo concrete, specific heat capacity, thermal diffusivity, and thermal conductivity are all decreased. There is strong relationship between thermal properties, temperature, density, water, and porosity.

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Review on factors influencing thermal conductivity of concrete incorporating various type of waste materials

Cited by 21 publications

References 21 publications

Mechanical and thermal properties of rubberized concrete incorporated silica fume

Mechanical and thermal properties of rubberized concrete incorporated silica fume

Building a Greener Future: Advancing Concrete Production Sustainability and the Thermal Properties of 3D-Printed Mortars

The Impact of Density and Porosity on Thermal Properties of Kernelrazzo Concrete Floor Finish

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