Thermal Conductivity Evaluation and Road Performance …
Steel Slag. The steel slags in the research are basic oxygen furnace (BOF) steel slags. …
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Steel Slag. The steel slags in the research are basic oxygen furnace (BOF) steel slags. …
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steel slag thermally conductive, while a large number of protrusions and micropores on the surface of the steel slag may be detrimental to thermal conductivity. The thermal conductivity first ...
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Effect of rubber content on the thermal conductivity of Steel Slag – Lime blocks (a) Observed and (b) Theoretical. In a study conducted by Letelier et al. (2021) [77], a combination of 15 % fine recycled concrete aggregate (FRCA) with 10 % and 15 % crumb rubber (CR) yielded thermal conductivities of 0.78 W/mK and 0.73 W/mK, respectively. …
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Owing to their high thermal conductivity and large specific heat, steel-slag-based ceramics outperform other thermal storage ceramic materials made from waste solids. In exhaustive and harsh high-temperature stability tests, the steel-slag-based solid particles exhibit an ultra-stable solar weighted absorptance of 93.25 ± 0.09%, superior ...
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Regardless, the thermal properties of steel slag asphalt concrete were shown to be better than those of conventional asphalt concrete. The most effective steel slag volume in asphalt concrete was shown to be 60 vol %. The snow melting efficiency of thermal conductivity asphalt concrete can be improved using an electrical-thermal system.
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Substituting steel slag for mineral materials in road construction has potential economic and environmental benefits. Due to the excellent thermal conductivity of steel slag, it is often used in ...
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The Thermal Conductivity Calculator is designed to compute the thermal conductivity of materials or determine the heat flux through objects based on Fourier's law. This guide offers a clear explanation of thermal conductivity, demonstrates how to apply the heat flux formula accurately, and discusses the units of thermal conductivity …
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Preparation of steel slag concrete and fractal model for its thermal conductivity ... Through comprehensive consideration of 7-d compressive strength and thermal conductivity, the recommend ...
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The heat conductivity of clay improved in the range of 3.28 %–14.59 %, the heat conductivity of the steel slag improved in the range of 1.91 %–25.56 %, and the heat conductivity of mixtures 1 and 2 improved in the ranges of 3.97 %–28.57 % and 2.65 %–17.87 %, respectively, due to different gradations. This is attributed to the grading ...
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Experiment results indicate that diabase and hot-stuffy steel slag …
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The thermal conductivity of the steel slag is 0.4–1 W/(m⊡K) which is much less than that of the quartz sand and calcium carbonate. Consequently, increasing the SSC of the quartz sand would cause a decline in the thermal conductivity of the loose materials and the EICP-treated specimens.
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Jiao et al. [49] verified the feasibility of adding steel slag to asphalt mixes as thermal aggregate to increase thermal conductivity for electrical-thermal snow melting. All these studies focused primarily on the use of steel slag in flexible pavements. With no data available on rigid concrete with aggregates of steel slag, the data obtained ...
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The heat capacity of the steel slag samples was measured in the temperature range of 200–750 °C with values between 0.6 and 0.8 kJ/kg·K. The thermal conductivity decreased with temperature from 1.7 W/m·K at 50 °C to 1.0 W/m·K at 900 °C. ... The authors refined the characterization of Calvet, including density, heat capacity, …
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The thermal conductivity increased initially and then fell as the percentage of steel slag increased. The asphalt mixture including 60% steel slag instead of 3–5 mm aggregate (6.6% of the mixture) had a maximum thermal coefficient of 1.746 W / m . °C, which was only 4.78% of the predicted value.
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DOI: 10.1016/j.conbuildmat.2023.131688 Corpus ID: 258771268; Preparation and characterization of binary eutectic phase change material laden with thermal conductivity enhancer for cooling steel slag asphalt pavement
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The thermal energy storage density of steel slag is 797.9 kJ·kg −1 …
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Results showed that active minerals such as iron oxides make the steel slag thermally …
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In this work, EAF slags from steelmaking industry were characterized. Steel slag is produced in the melting process of the iron ore and about 10–20% of slag is generated per ... Thermal conductivity of c slag fluctuated with temperature from 1.84 W/(m·K) at RT to 1.75 W/(m·K) at 500 °C, and the value of s slag increased with …
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This paper provides the use of steel slag as a replacement for natural …
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This study investigates the influence of steel slag content on the road …
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The thermal conductivity of TCAC was tested using both parallel hot-wire and TPS methods. The thermal conductivity of TCAC was first increased, before decreasing with an increase in the steel slag replacement. The thermal conductivity reached a peak at of SS-60, and the λ value was increased by 8.23% compared with SS …
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Modified steel slag powder was used to create a modified steel slag/rubber composite material using self-made steel slag grinding modifier and combining it with carbon black and rubber matrix to treat hot braised steel slag, electric furnace steel slag, and air-quenched steel slag. Next, the thermal conductivity of the three types of …
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The thermal conductivity of the SSRAM with different steel slag content (0%, 20%, 40%, …
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Steel slag, a by-product of steelmaking, can be used as backfill material for energy structures, and the granite residual soil is a common soil type in civil infrastructure. The thermal conductivity of backfill materials and soils surrounding the piles is the crucial parameter which has influence on the heat transfer. In this paper, the steel slag and …
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Steel slag warm mix asphalt has better mechanical properties than limestone hot mix asphalt. The use of steel slag increases the aging index of the asphalt mixture and reduces the anti-aging ability of the asphalt mixture. In addition, the replacement of lime-stone aggregate with steel slag increases the optimal asphalt aggregate ratio by 0.45%.
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Results showed that active minerals such as iron oxides make the steel slag thermally conductive, while a large number of protrusions and micropores on the surface of the steel slag may be detrimental to thermal conductivity.
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Thermal conductivities of four different ladle slags were measured at 1773 K, 1823 K, 1873 K, and 1923 K (1500 °C, 1550 °C, 1600 °C, and 1650 °C) using the transient hot wire method. Very good reproducibility was obtained. The thermal conductivity did not vary substantially with the variation of slag composition at 1873 K and 1923 K (1600 °C …
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The thermal conductivity of the SSRAM with different steel slag content (0%, 20%, 40%, 60%, 80%, and ) was 1.994, 2.188, 2.239, 2.255, 2.288, and 2.295 W/(m·K), respectively. Measurements of the outdoor temperature distribution further confirmed that steel slag increased the thermal conductivity of the mixtures, thereby …
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ratios of thermal conductivity. Keywords EICP Granite residual soil Heat transfer mechanism Steel slag Thermal conductivity 1 Introduction Geothermal energy is a potential clean and renewable heat resource to replace the traditional fossil fuels which emit the greenhouse gas contributing to the global environment degradation [1, 45].
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is not friendly to the environment. Steel slag (SS), a side product of steel manufacture, possesses a high amount (15–20%) of crude steel while the comprehensive consumption of the crude steel rate falls below 30% [1]. In the last five years, the annual production of SS in China exceeded 1.4 108 tons and approached almost 1.6 810 tons …
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Due to the large radiation and difficulties in determining the solid fraction, conventional methods are not appropriate to measure the thermal conductivity of high-temperature molten slag. This paper presents a method to measure the thermal conductivity of molten slag above 600 °C. Solidification of molten slag was …
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Recycled solid waste steel slag and coal gangue are used as the carrier.. The infiltration efficiency can reach to 98.0 % due to the interconnected pores. • The composite showed a compressive strength of 146.9 MPa.. The eco-friendly matrix increased the thermal conductivity of solar salt by 7.08 times.. The composite had great thermal …
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