气候变化领域集成服务门户(CCPortal): Numerical investigation on the thermal control performance and freeze-thaw resistance of a composite concrete pier with microencapsulated phase change materials

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DOI	10.1016/j.solener.2021.12.042
	Numerical investigation on the thermal control performance and freeze-thaw resistance of a composite concrete pier with microencapsulated phase change materials
	Tian, Yan; Lai, Yuanming; Qin, Zipeng; Pei, Wansheng
通讯作者	Pei, WS (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	0038-092X
EISSN	1471-1257
起始页码	970
结束页码	984
卷号	231
英文摘要	Concrete structures in cold regions are often damaged by freeze-thaw action, which can seriously reduce their service life. How to actively reduce the freeze-thaw cycles suffered by the structures is key to enhance their freeze-thaw durability. In this paper, a composite pier protective technique with microencapsulated phase change material concrete (MPCMC) was proposed, including the MPCMC layer, the pure microencapsulated phase change material (MPCM) layer, the insulation layer, and the structure concrete (SC). To analyze the thermal control performance of the composite MPCMC pier, a 3-D heat transfer model with phase change were established. Combing the laboratory and field tests, a series of numerical simulations were conducted. The results indicated that the key parameters, including the thickness, phase change range, and thermal conductivity of the MPCMC layer and MPCM layer, and the thickness and thermal conductivity of the insulation layer, can determine the thermal control performance of the composite pier. An optimal composite structure was obtained considering the engineering cost. The optimal structure can effectively reduce the freeze-thaw cycles and extend its service life. Compared to the ordinary concrete pier, the maximum degree of reduction for freeze-thaw cycles can reach 94% and the maximum extension for service life can be 1470% at the freezing point of 0 degrees C. The study can provide some theoretical basis for the design of the freeze-thaw resistance of the concrete structure in cold regions and related researches.
关键词	MATERIAL-WATER SYSTEM CHANGE MATERIALS PCMS ENERGY-STORAGE INSULATION LAYER DAMAGE MODEL HEAT DURABILITY CARBONATION CRACKING MORTAR
英文关键词	Low-transition temperature PCM; Freeze-thaw action; Service life; Thermal control performance; Numerical simulation
语种	英语
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:000754395200005
来源期刊	SOLAR ENERGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254145
作者单位	[Tian, Yan; Lai, Yuanming] Lanzhou Univ, Coll Civil Engn & Mech, Lanzhou 730000, Peoples R China; [Lai, Yuanming; Pei, Wansheng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Qin, Zipeng] Zhejiang Univ Water Resources & Elect Power, Coll Water Conservancy & Environm Engn, Hangzhou 310000, Peoples R China; [Lai, Yuanming; Pei, Wansheng] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tian, Yan,Lai, Yuanming,Qin, Zipeng,et al. Numerical investigation on the thermal control performance and freeze-thaw resistance of a composite concrete pier with microencapsulated phase change materials[J]. 中国科学院西北生态环境资源研究院,2022,231.
APA	Tian, Yan,Lai, Yuanming,Qin, Zipeng,&Pei, Wansheng.(2022).Numerical investigation on the thermal control performance and freeze-thaw resistance of a composite concrete pier with microencapsulated phase change materials.SOLAR ENERGY,231.
MLA	Tian, Yan,et al."Numerical investigation on the thermal control performance and freeze-thaw resistance of a composite concrete pier with microencapsulated phase change materials".SOLAR ENERGY 231(2022).