Asphalt adding latent heat storage material
Currently, functional pavement materials become a research hotpot for road researchers. This paper aims to develop a phase change heat storage asphalt pavement material and then design phase change hea.
••A polyurethane-based PCM that can keep solid state and stable volume.
PolyurethaneSolid-solid phase change heat storagePhase change fillerPhase change heat storage asphalt mixtureThermophysical.
Road becomes an indispensable transport infrastructure that is closely associated with the human life. The road construction has lasted for several decades, during which the materials for r.
2.1. PusspcmThe raw materials for synthesizing polyurethane-based solid–solid phase change material (PUSSPCM) included polyethylene glyc.
3.1. Differential scanning calorimetry (DSC)The phase change properties and phase change cycling stability of PUSSPCM were tested by using a differential scanning calorimeter (TA i.An up-and-coming solution is the inclusion of phase change materials (PCM) within asphalt structures. By storing and releasing heat during their phase transitions, PCM can effectively modulate asphalt surface temperatures, mitigating the effects of urban heating.
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6 FAQs about [Asphalt adding latent heat storage material]
How to absorb heat inside asphalt pavement?
Absorbing the heat inside the pavement is mainly achieved by adding PCMs (phase change materials) or setting an energy collection device. PCMs store heat in the form of latent heat when a phase change occurs, improving the heat storage capacity of asphalt mixtures and reducing the asphalt pavement temperature (Athukorallage et al. 2018).
Do PCMS store heat in a phase change asphalt mixture?
PCMs store heat in the form of latent heat when a phase change occurs, improving the heat storage capacity of asphalt mixtures and reducing the asphalt pavement temperature (Athukorallage et al. 2018). Wei et al. (2019) prepared a phase change asphalt mixture by replacing the fine aggregate with NiTi alloy phase change heat storage materials.
Does phase change heat storage asphalt mixture meet high-temperature performance requirement?
As can also be seen that the phase change heat storage asphalt mixtures with 20 vol% and 40 vol% PUSSPCM have dynamic stability values that are higher than the limit value of 2800 kN, meeting high-temperature performance requirement in JTG D50-2006. Fig. 13. Test results of high-temperature performance of phase change heat storage asphalt mixtures.
What is the construction temperature of hot mix asphalt pavement?
The construction temperature of hot-mix asphalt mixtures usually ranges from 160 °C to 185 °C, at which the phase change heat storage asphalt pavement materials should keep solid without obvious leakage to avoid the detrimental influence of the leaked PCM on the comprehensive performance of asphalt pavement.
Can CS-PCM improve the heat storage capacity of asphalt mixture?
The incorporation of CS-PCM can improve the heat storage capacity of asphalt mixture and reduce its temperature, but the modulus and high temperature stability of asphalt mixture will be reduced due to CS-PCM change from solid phase to liquid phase during the phase transition.
What factors affect the heat transfer of asphalt pavement?
5.2. Temperature Field of Phase Change Material-Modified Asphalt Pavement The heat transfer of the pavement is impacted by external elements, such as air temperature, solar radiation, wind, and rainfall, and internal factors, such as the form of pavement structure and the physical parameters of the pavement materials.