相变储能混凝土的性能研究及机理分析
Performance study and mechanism analysis of phase change energy storage concrete
关键词：
相变储能混凝土；相变材料；力学性能；微观结构；低温储热性能
Key words：
Phase change energy storage concrete; Phase change material; Mechanical property; Microstructure; Low temperature heat storage performance
刊期：
2025年第12期
DOI：
10.19761/j.1000-4637.2025.12.056.05
文章编号：
基金项目：
中国科学院重点部署项目（ZDRW-ZS-2020-1）；中国铁路总公司科技研究开发计划项目（P2018G004）。
作者：
艾 杰1，陈延飞1，车 俊1，段晓伟1，于本田2
单位：
1.甘肃交通规划勘察设计院股份有限公司，甘肃 兰州 730000；2.兰州交通大学 土木工程学院， 甘肃 兰州 730070
摘要
摘 要：研究了不同复合相变材料C14/EG掺量（0、1%、2%、3%、4%）对相变储能混凝土力学性能、热学性能和微观结构的影响，分析了影响机理。结果表明：随着C14/EG掺量的增加，混凝土的抗压强度、导热系数、干密度均降低，保温性能提高；C14/EG可以显著减缓混凝土内部温度变化进程，水泥的水化程度降低，混凝土内部水化产物减少，整体结构相对疏松，无害孔占比减少，多害孔和有害孔占比增加，混凝土内部的小孔逐渐向大孔转变；整体来看，当C14/EG掺量为2%时，混凝土具有良好的低温储热性能，且抗压强度相对较好。
Abstract: The effects of different contents of composite phase change materials C14/EG(0, 1%, 2%, 3%, 4%) on the mechanical properties, thermal properties, and microstructure of phase change energy storage concrete were studied, and the influencing mechanism was analyzed. The results show that with the increase of C14/EG content, the compressive strength, thermal conductivity, and dry density of concrete decrease, and the insulation performance improves. C14/EG can significantly slow down the temperature change process inside the concrete, reduce the hydration degree of cement, decrease the hydration products inside the concrete, make the overall structure relatively loose, reduce the proportion of harmless pores, increase the proportion of multiple harmful pores and harmful pores, and gradually transform the small pores inside the concrete into large pores. Overall, when the C14/EG content is 2%, the concrete has good low temperature heat storage performance and relatively good compressive strength.
结论
（1）随着C14/EG掺量的增加，混凝土的抗压强度、导热系数、干密度均降低，保温性能提高，C14/EG可以显著减缓混凝土内部温度变化进程。
（2）随着C14/EG掺量的增加，水泥的水化程度降低，混凝土内部水化产物减少，整体结构相对疏松，无害孔占比减少，多害孔和有害孔占比增加，混凝土内部的小孔逐渐向大孔转变。
（3）整体来看，本文研究中，当C14/EG掺量为2%时，混凝土的抗压强度相对较好，同时具有良好的储热性能，可于建筑节能、交通能源、偏远地区供电及低空经济等领域，具体包括智能调温建筑、路面无线充电、无人基站供电等场景。此外，建议通过提高混凝土配制强度或掺入钢纤维、纳米材料等方法提高相变储能混凝土的强度，以便将其应用于更多的实际工程中。
参考文献
[1] KUMAR S,PRAKASH S A,PANDIYARAJAN V,et al.Effect of phase change material integration in clay hollow brick composite in building envelope for thermal management of energy efficient buildings[J].Journal of Building Physics,2020,43(4):351-364.
[2] 陈昕,李文婷,蒋正武.相变材料在改善水泥基材料抗冻性方面的研究进展[J].硅酸盐通报,2017,36(10):3330-3335.
[3] SOMANI P,GAUR A.Evaluation and reduction of temperature stresses in concrete pavement by using phase changing material[J].Materials Today:Proceeding,2020,32:856-864.
[4] BELEN Z,JOSE M M,LUISA F C,et al.Review on thermal energy storage with phase change: materials, heat transfer analysis and applications[J].Applied Thermal Engineering,2003,23(3):251-283.
[5] NESSRINE E,AMARA L,JAMEL N.Compressive strength and hygric properties of concretes incorporating microencapsulated phase change material[J].Construction and Building Materials,2019,222:254-262.
[6] 郑海,杨红霞.热储能相变PW/GO/水泥复合材料的力学和热性能研究[J].功能材料,2021,52(6):6152-6156.
[7] CUI H Z,LIAO W Y,MI X M,et al.Study on functional and mechanical properties of cement mortar with graphite-modified microencapsulated phase-change materials[J].Applied Energy, 2015,105:273-284.
[8] ROMERO R C,FILHO D M,FRANCA F,et al.Fundamental investigation on the frost resistance of mortar with microencapsulated phase change materials[J].Cement and Concrete Composites,2020,113:9458-9465.
[9] YUAN X,WANG B,CHEN P,et al.Study on the frost resistance of concrete modified with steel balls containing phase change material (PCM)[J].Materials,2021,14:4497.
[10] 于本田,陈延飞,李双洋,等.正十四烷/石墨低温相变水泥基材料的制备及冻融损伤演化[J].复合材料学报,2022,39(6): 2864-2874.
[11] 中华人民共和国住房和城乡建设部,国家市场监督管理总局.混凝土物理力学性能试验方法标准:GB/T 50081—2019[S].北京:中国建筑工业出版社,2019.
[12] 刘鹏,顾晓滨,赵媛媛,等.粉煤灰-硅藻土复合相变储能材料制备及导热强化[J].材料工程,2021,49(3):141-150.
[13] WEI Z H,FALZONE G,WANG B,et al.The durability of cementitious composites containing microencapsulated phase change materials[J].Cement and Concrete Composites,2017,81:66-76.
[14] 吴中伟,廉慧珍.高性能混凝土[M].北京:中国铁道出版社, 1999:42-43.
引用本文
艾杰,陈延飞,车俊,等.相变储能混凝土的性能研究及机理分析[J].混凝土与水泥制品,2025(12):56-59,82.
AI J,CHEN Y F,CHE J,et al.Performance study and mechanism analysis of phase change energy storage concrete[J].China Concrete and Cement Products,2025(12):56-59,82.
上一个： 典型工业固废制备功能化导电砂浆的研究进展
下一个： 石蜡装载工艺与封装技术对相变泡沫混凝土性能的影响研究
相关文件