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Study on the Workability and Mechanical Properties of Pavement Concrete Modified with Graphite-tetradecane Phase Change Material

Author(s)

Yanzhao Feng1, Chen Wang1, Jianbin Sun2,*

Affiliation(s)

1Shandong hi-speed Engineering Construction Group Co., LTD, Jinan, Shandong Province, China, 2Shandong Transportation Institute., Jinan, Shandong Province, China *Corresponding Author.

Abstract

In this paper, the effect of graphite-tetradecane phase change material (G-t PCM) on pavement concrete's mechanical properties and frost resistance was investigated. Different dosages of G-t PCM (0%, 4%, 8%, and 12%) were used to prepare modified concrete, and the effects of G-t PCM on the properties of concrete were systematically evaluated by compressive strength, flexural strength, and rapid freeze-thaw tests. The findings demonstrated that as the dosage of G-t PCM increased, concrete's compressive and flexural strengths tended to drop; the most significant loss was seen at a dosage of 12%. However, the introduction of G-t PCM significantly improved the frost resistance of concrete, especially the composite phase change material with 8% dosage (phase change temperatures of 5°C and -5°C, respectively), which showed the best frost resistance. The study showed that precise regulation of the dose of G-t PCM may significantly improve the frost resistance of concrete without considerably compromising its mechanical qualities, offering a novel approach to increase the longevity of pavement concrete.

Keywords

Phase Change Materials; G-t PCM Modified Concrete; Frost Resistance; Compressive Strength; Flexural Strength

References

[1] Yin Changyan. A research paper titled “Investigation of the workability and mechanical properties of cement concrete pavement incorporating waste rubber particles” was conducted and published in a journal. Highway, 2019, 68(05):326-329. [2] Liu Dachao, Fu Zhiming, Liu Xiang, et al. Study on RCC performance of Rural Highway pavement. Concrete, 2014(02):146-149. [3] Zhu K. Study on the influence of large fly ash content on the performance of heavy traffic pavement concrete. Concrete, 2011(04):124-126+129. [4] Zhou Jianting, Nie Zhixin, Guo Zengwei, et al. Analysis of the preparation and characteristics of phase change concrete. Journal of Jiangsu University (Natural Science Edition), 2019, 41(05):588-595. (in Chinese) [5] Hu Zhide, Zhao Sixie, Wang Hongtao. Composite phase change materials in concrete application research progress. Journal of Silicate Bulletin, 2018, 5 (9): 2825-2829. The DOI:10.16552/j.carol carroll nki issn1001-1625.2018.09.024. [6] Feng Zhe, Hu Dongxia, Zhao Long, et al. Research status of phase change materials in road engineering. Materials Review, 2015, 29(S1):144-147. [7] Yu Honda, Chen Yanfei, LI Shuangyang, et al. Study on the preparation and progression of freeze-thaw damage in N-tetradecane/graphite low-temperature phase change cement-based materials. Journal of composite materials, 2022, 33 (6) 6:2864-2874. The DOI:10.13801/j.carol carroll nki FHCLXB. 20211110.002. [8] Li Haijian, Ji Zhijiang, Wang Jing, et al. Research status of composite phase change materials. Materials Review, 2008, 22(S2):248-251. (in Chinese) [9] Fang Guo-Hao, Chen Jin-Mei, Wang Yan-Shuai, et al. Research progress of microcapsule self-healing concrete. Journal of silicate, ploidy of 2023 (9): 2423-2432. The DOI:10.14062/j.i SSN.0454-5648.20230161. [10] Zhao Shangchuan, Li Xiaopeng, Wang Shaopeng. Investigate the current state and advancements in the development of wall materials made from concrete that include self-healing microcapsules.. Materials Review, 2019, 34(S2):1201-1205. (in Chinese) [11] Lv Leyang, Zhang Xiangyu, Dong Biqin, et al. Self-healing concrete design method of triggering review. Materials review:1-28 [2024-07-30]. HTTP://http://kns.cnki.net/kcms/detail/50.1078.TB.20240124.1428.004.html. [12] Zhang Peng, Guo DeYang, Bao Jiowen, et al. Based on the microbial mineralization self-healing performance of concrete research progress. Journal of Silicate, 2022, 50 (02):544-554. The DOI:10.14062/j.i SSN.0454-5648.20210192.