The mechanism of different thermoregulation types of composite shape-stabilized phase change materials used in asphalt pavement

Si, Wei; Zhou, Xiaoli; Ma, Biao; Li, Ning; Ren, Jizhou; Chang, Yen–Jung

doi:10.1016/j.conbuildmat.2015.08.038

Cited by 56 publications

(17 citation statements)

References 15 publications

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“…Rutting has an important influence on the performance of asphalt pavements during their life period [1]. When the vehicle load is applied to the asphalt pavement surface at high temperatures, deformation of the asphalt mixture will occur.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Preparation and Properties on Shape Memory Hydrogenated Epoxy Resin Used for Asphalt Mixtures

Zhou

Wei

et al. 2017

Applied Sciences

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Abstract:The objective of this investigation is to prepare the shape memory hydrogenated epoxy resin used for asphalt mixtures (SM-HEP-AM) and study its properties. The shape memory hydrogenated epoxy resin (SM-HEP) is prepared using hydrogenated bisphenol A epoxy resin (AL-3040), polypropylene glycol diglycidylether diacrylate (JH-230), and isophorone diamine (IPDA). The formulations of the SM-HEP-AM are obtained by the linearly fitted method. The thermo-mechanical property, molecular structure, and shape-memory performance of the SM-HEP-AM are studied. The glass-transition temperature (T g ) is determined using the differential scanning calorimeter (DSC). The results proved that the T g level increased when the JH-230 content decreased. The thermo-mechanical property of the SM-HEP-AM is measured by dynamical mechanical analysis (DMA). The storage modulus of the SM-HEP-AM decreased with the increase in the JH-230 content. The above phenomena are attributed to the change in the JH-230 content. The shape memory performance results of the SM-HEP-AM indicate that specimen deformation can completely recover after only several minutes at T g + 10 • C and T g + 20 • C. The shape recovery time of the SM-HEP-AM increases with increased JH-230 content, and the change between the shape recovery time and JH-230 content gradually decreased as the temperature increased. The deformation recovery performance of asphalt mixture with and without the SM-HEP-AM (T g = 40 • C) was tested by the deformation recovery test. This was used to prove that the SM-HEP-AM helps to improve the deformation recovery performance of the asphalt mixture.

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Section: Introductionmentioning

confidence: 99%

Analysis of Preparation and Properties on Shape Memory Hydrogenated Epoxy Resin Used for Asphalt Mixtures

Zhou

Wei

et al. 2017

Applied Sciences

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“…The initial phase change temperature of CPCM used in this study was 5 °C, which is 5 °C CPCM for short. The DSC curves of 5 °C CPCM [ 14 ] are shown in Figure 1 . During the exothermic process, the initial phase change temperature and final phase change temperature were 2 °C and −31 °C, respectively, and the compensation power peak appeared at −5 °C or so.…”

Section: Methodsmentioning

confidence: 99%

“…Such CPCM adjusted the temperature of the pavement, increasing its adaptability to environmental changes. It can be applied directly to the asphalt mixture [ 14 ]. Therefore, CPCM was used as an admixture of asphalt mixture to improve the performance of asphalt pavement.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Specific Heat Capacity on Composite Shape-Stabilized Phase Change Materials and Asphalt Mixtures by Heat Exchange System

Zhou

Liu³

et al. 2016

Materials

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Previous research has shown that composite shape-stabilized phase change material (CPCM) has a remarkable capacity for thermal storage and stabilization, and it can be directly applied to highway construction without leakage. However, recent studies on temperature changing behaviors of CPCM and asphalt mixture cannot intuitively reflect the thermoregulation mechanism and efficiency of CPCM on asphalt mixture. The objective of this paper is to determine the specific heat capacity of CPCM and asphalt mixtures mixed with CPCM using the heat exchange system and the data acquisition system. Studies have shown that the temperature-rise curve of 5 °C CPCM has an obvious temperature plateau, while an asphalt mixture mixed with 5 °C CPCM does not; with increasing temperature, the specific heat capacities of both 5 °C CPCM and asphalt mixture first increase and then decrease, while the variation rate of 5 °C CPCM is larger than that of the asphalt mixture, and the maximum specific heat capacity of 5 °C CPCM appears around the initial phase change temperature. It is concluded that the temperature intervals of 5 °C CPCM are −18 °C–7 °C, 7 °C–25 °C and 25 °C–44 °C, respectively, and that of the asphalt mixture are −18 °C~10 °C, −10 °C~5 °C and 5 °C~28 °C. A low dosage of 5 °C CPCM has little influence on the specific heat capacity of asphalt mixture. Finally, the functions of specific heat capacities and temperature for CPCM and asphalt mixture mixed with CPCM were recommended by the sectional regression method.

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“…For their PCM-attractive features, alkanes have been extensively evaluated in the PCM-context, as, pure components (e.g. Huang et al, 2010;Kenisarin, 2014;Şahan et al, 2015;Si et al, 2015;Navarro et al, 2016;Zhang et al, 2016;Fioretti et al, 2016;Arshad et al, 2017;Sattari et al, 2017) and blends (e.g. Choi et al, 1992;Espeau et al, 1996;Stolk et al, 1997;He et al, 1999;Ventolà et al, 2002;He et al, 2003;Mondieig et al, 2004;He et al, 2004;He, 2004;Ventolà et al, 2005;Yilmaz et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Experimental phase diagram of the dodecane–tridecane system as phase change material in cold storage

Gunasekara

Kumova

Chiu

et al. 2017

International Journal of Refrigeration

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Highlights: C12H26-C13H28 system has a congruent minimum-melting solid solution and polymorphs  The minimum-freezing 17.7 mol% C13H28 blend (at -16 to -12 °C ) is a potential PCM  17.7 mol% C13H28 blend freezes with an enthalpy of 165 kJ kg -1 and no supercooling  The system has a minimum-melting trend, but has no eutectic as literature proposed  Extensive physicochemical studies needed to explain melting/freezing discrepancies AbstractIntegrating thermal storage with phase change materials (PCMs) in refrigeration and air conditioning processes enables energy performance improvements. Herein, the experimental phase diagram of the alkanes system dodecane-tridecane (C 12 H 26 -C 13 H 28 ) is evaluated to find PCMs for freezing applications. For that, the Temperature-history method was coupled with a Tammann plot analysis. The obtained C 12 H 26 -C 13 H 28 phase diagram indicated a congruent minimum-melting solid solution and polymorphs. The minimum-melting liquidus and the polymorphs identified here, agree with previous literature. However, the system does not represent a eutectic, as previously was proposed. The minimum-melting composition is here identified within 15-20 mol% C 13 H 28 compositions. The 17.7 mol% C 13 H 28 is the narrowest minimum-melting composition among those analyzed, melting and freezing between -16 to -12 °C and -17 to -15 °C, with: the enthalpies 185 kJ kg -1 and 165 kJ kg -1 ; no supercooling; and only minor hysteresis. Hence, this blend has potential as a PCM in freezing refrigeration applications.

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The mechanism of different thermoregulation types of composite shape-stabilized phase change materials used in asphalt pavement

Cited by 56 publications

References 15 publications

Analysis of Preparation and Properties on Shape Memory Hydrogenated Epoxy Resin Used for Asphalt Mixtures

Analysis of Preparation and Properties on Shape Memory Hydrogenated Epoxy Resin Used for Asphalt Mixtures

Determination of Specific Heat Capacity on Composite Shape-Stabilized Phase Change Materials and Asphalt Mixtures by Heat Exchange System

Experimental phase diagram of the dodecane–tridecane system as phase change material in cold storage

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