Effect of lightweight aggregate gradation on latent heat storage capacity of asphalt mixture for cooling asphalt pavement

Du, Yinfei; Liu, Pusheng; Wang, Jiacheng; Dan, Han-Cheng; Wu, Hao; Li, Yingtao

doi:10.1016/j.conbuildmat.2020.118849

Cited by 28 publications

(18 citation statements)

References 32 publications

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“…These properties are detailed in Table A1 , demonstrating their necessary roles in various applications. Also, as shown in Table A1 , the most frequently employed materials as PCM are polyethylene glycols, or PEGs, notably PEG2000 and PEG4000, due to their significant enthalpies during phase changes [ 12 , 13 , 25 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. These materials exhibit desirable attributes such as thermal and chemical stability, non-toxicity, and an appropriate phase change temperature range [ 44 ] during the phase change from solid.…”

Section: Resultsmentioning

confidence: 99%

“…The particle sizes of PCM, an aspect key to leakage risk (pointed out in Table A2 ) and thermal performance, have been studied extensively. The PCM in Table A1 exhibit a wide range, from a minuscule 0.0002 mm [ 45 ] to a larger 9.5 mm [ 37 , 46 ], with an average particle size of 1.27 mm. In the case of common materials such as PEG2000 and PEG4000, the average particle sizes are 0.4 and 0.6 mm, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Conversely, PCM with higher melting points around 50 °C to 60 °C, such as types PEG1000 to PEG8000 [ 12 , 13 , 25 , 26 , 35 , 36 , 37 , 40 , 42 , 62 ], OP55E [ 63 ], stearic acid (SA) [ 11 , 64 ], PCM-43 and PCM-48 [ 46 ], and ceresin wax [ 65 ], could be employed in high-temperature thermal energy storage applications. These are particularly suitable for tropical and temperate locales where summer temperatures can get excessively high, posing a risk to the mechanical integrity of asphalt material.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

Pinheiro,

Landi,

Lima

et al. 2023

Sensors

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This research presents a dual-pronged bibliometric and systematic review of the integration of phase change materials (PCMs) in asphalt pavements to counteract the urban heat island (UHI) effect. The bibliometric approach discerns the evolution of PCM-inclusion asphalt research, highlighting a marked rise in the number of publications between 2019 and 2022. Notably, Chang’an University in China has emerged as a leading contributor. The systematic review addresses key questions like optimal PCM types for UHI effect mitigation, strategies for PCM leakage prevention in asphalt, and effects on mechanical properties. The findings identify polyethylene glycols (PEGs), especially PEG2000 and PEG4000, as prevailing PCMs due to their wide phase-change temperature range and significant enthalpy during phase transitions. While including PCMs can modify asphalt’s mechanical attributes, such mixtures typically stay within performance norms. This review emphasises the potential of PCMs in urban heat management and the need for further research to achieve optimal thermal and mechanical balance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

Pinheiro,

Landi,

Lima

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Among them, the effect of high ground temperature mainly causes mine heat damage, which is divided into two categories: high temperature heat damage and high humidity heat damage. According to the survey, there are 62 mines affected by mine heat damage in China, spreading over 13 provinces, among which the more prominent ones affected by mine heat damage are: the fifth mine of Pingcoal and the sixth mine of Pingcoal in Henan province, where the mining depth reaches -909m and -900m, respectively, and the surface temperature of the rock body in some areas is as high as 50°C and 53°C, and the underground hot water temperature reaches 42°C; the Dingji mine and the Panyi mine in Huainan, Anhui province, mining depths reached -826m and -810m, respectively, with local rock temperatures as high as 43°C and 40°C, and underground hot water temperatures of 45°C and reaching 35°C, respectively; Shenyang Hongyang third mine and Fushun Lao Hutai mine in northeast China, mining depths reached -1100m and -800m, respectively, with maximum rock surface temperatures of 50°C and 42°C, respectively, and maximum underground water temperatures of 51°C, respectively [ 6 – 9 ].…”

Section: Introductionmentioning

confidence: 99%

Variable angle of insulated shotcrete under different loading rates and temperature and humidity cycles- shear test and analysis

Tong,

Shen,

Pang

et al. 2024

PLoS ONE

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The new thermal insulating shotcrete is of great significance for the management of thermal damage in deep mines, and its own strength has a greater impact on the roadway insulation and safe production, so it is very necessary to study the shear strength of the new thermal insulating shotcrete under the influence of the deep hot and humid environment and the stress of mining. For the heat-insulating shotcrete, firstly, we carried out the concrete variable angle shear test under different loading rates, which concluded that the shear rate and peak shear stress showed a trend of increasing and then decreasing; as the angle increases, the different rates have a greater impact on the peak shear stress of the specimen. Secondly, the concrete variable angle shear test was carried out under the temperature and humidity cycle, which revealed that the shear strength of thermal insulated shotcrete increased firstly and then decreased with the increase of temperature at the same number of cycles. Finally, the empirical equations between the cohesive force c, the angle of internal friction ϕ and the number of warm and wet cycles n and the temperature of warm and wet cycles T are fitted with the MATLAB software respectively, and the research results provide technical references for the management of geothermal temperature in deep well projects.

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“…One effective solution to reduce the risk of leaking is to use the coating method to coat the porous aggregate surface. Coating materials such as epoxy resins, polyester resins, granite powder, and cement paste have been used (5)(6)(7)(8). However, the coating method is complex, expensive, and difficult to apply in asphalt plants.…”

mentioning

confidence: 99%

Evaluation of Thermal and Rheological Properties of Phase Change Material-Incorporated Asphalt Mastic with Porous Fillers

Wang

Liu

2023

Transportation Research Record: Journal of the Transportation R

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Incorporating phase change material (PCM) into paving materials can regulate the pavement temperature, improve the pavement durability, and mitigate the heat-island effects. In this research, porous fillers were used as the PCM carrier, and the thermal and rheological behaviors of the asphalt mastic with the PCM were evaluated. Two different carrier materials (diatomite and expanded perlite) and four types of PCMs were used in the study. The candidate filler, PCM, and proper blending ratios were determined based on the results of scanning electron microscope image analysis, the filter paper test, and the temperature sweep test. The thermal and rheological behaviors of the mastics with PCMs were further evaluated with different filler replacement ratios. Thermal analysis through a differential scanning calorimetry test, thermal conductivity and volumetric heat capacity test, and real-time temperature performance test were performed on the asphalt mastics. Rheological tests, including the complex shear modulus test, the bending beam rheometer test, and the linear amplitude sweep test, were also conducted. The modified mastics were found to have high heat capacity with the latent heat storage ability. The rheological analyses showed that with the addition of polyethylene glycol, while the low-temperature performance of the asphalt mastics was improved, the performance at intermediate and high temperatures was not adversely affected by the PCM.

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Effect of lightweight aggregate gradation on latent heat storage capacity of asphalt mixture for cooling asphalt pavement

Cited by 28 publications

References 32 publications

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

Variable angle of insulated shotcrete under different loading rates and temperature and humidity cycles- shear test and analysis

Evaluation of Thermal and Rheological Properties of Phase Change Material-Incorporated Asphalt Mastic with Porous Fillers

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