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Abstract

To compare the light reflection and exhaust degradation effect of common road coating fillers, this paper prepared three kinds of road surface coatings with Nano-TiO2, Nano-ZnO, and Micro-TiO2 as fillers respectively. Meanwhile, the reflectivity tests of the coatings with different mixing contents of fillers were conducted by adopting a self-developed light reflectivity tester to determine the optimal mixing content of fillers. Under the optimal mixing content of fillers, the reflectivity of three kinds of coating asphalt mixtures was tested to compare the light reflectivity effect of Nano-TiO2, Nano-ZnO and Micro-TiO2. Additionally, a self-developed exhaust concentration analyzer was utilized to test the degradation rate of three kinds of coatings on CO, HC, and NOx gases in photocatalytic conditions, with the degradation effects of the three kinds of fillers compared. The results show that the reflectivity of asphalt mixtures is 5.46%‒6.11% and the optimal mixing content of fillers in reflective coatings is 30%. After coating, the reflectivity of the mixtures decreases greatly, and the order of reflectivity of the three kinds of fillers under the same dosage of coatings is Micro-TiO2>Nano-ZnO>Nano-TiO2. Meanwhile, the reflectivity of the Micro-TiO2 coating reaches 59% under the dosage of 0.9 kg/m2. The exhaust degradation effect exerted by fillers is in the order of Nano-TiO2>Nano-ZnO>Micro-TiO2. Specifically, the coatings have the most prominent effect on the NOx degradation in the three kinds of exhaust.

Publication Date

9-14-2023

DOI

10.14048/j.issn.1671-2579.2023.04.045

First Page

279

Last Page

283

Submission Date

March 2025

Reference

[1] 彭义东. 城市热岛与地表参数的关系及其尺度效应研究[D]. 重庆: 重庆邮电大学, 2017. PENG Yidong.Study on the relationship between urban heat island and surface parameters and its scale effect. Chongqing: Chongqing University of Posts and Telecommunications, 2017. [2] LI H, HARVEY J T, HOLLAND T J, et al. The use of reflective and permeable pavements as a potential practice for heat island mitigation and stormwater management[J]. Environmental Research Letters, 2013, 8(1): 015023. [3] 冯锡荣. 沥青路面降温涂层材料优化设计及其性能研究[J]. 中外公路, 2020, 40(3): 253-258. FENG Xirong. Optimal design and performance of cooling coating material on asphalt pavement[J]. Journal of China & Foreign Highway, 2020, 40(3): 253-258. [4] GHASAN S,MAJEED A,RATNASAMY M.The effect of binder type and temperature differential on the rutting performance of hot mix asphalt[J].International Journal of Applied Engineering Research,2017,12(17):6841‑6852. [5] DEL CARPIO JAV,MARINOSKI D L,TRICHÊS G,et al.Urban pavements used in brazil: Characterization of solar albedo and temperature verification in the field[J].Solar Energy,2016,134:72‑81. [6] 郑木莲, 何利涛, 高璇, 等. 基于降温功能的沥青路面热反射涂层性能分析[J]. 交通运输工程学报, 2013, 13(5): 10-16. ZHENG Mulian, HE Litao, GAO Xuan, et al. Analysis of heat-reflective coating property for asphalt pavement based on cooling function[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 10-16. [7] 曹雪娟, 唐伯明, 朱洪洲. 降低沥青路面温度的热反射涂层性能研究[J]. 重庆交通大学学报(自然科学版), 2010, 29(3): 391-393+420. CAO Xuejuan, TANG (BaiBo)(Ming), ZHU Hongzhou. Study on performance of heat-reflective coat of lowering asphalt pavement temperature[J]. Journal of Chongqing Jiaotong University (Natural Science), 2010, 29(3): 391-393+420. [8] 王赫.沥青路面热反射涂层性能及应用研究[D].哈尔滨:哈尔滨工业大学,2013. WANG H. Research on the performance and application of heat-reflective coating on asphalt pavement[D]. Harbin:Harbin Institute of Technology,2013. [9] 谭忆秋, 李洛克, 魏鹏, 等. 可降解汽车尾气材料在沥青路面中的应用性能评价[J]. 中国公路学报, 2010, 23(6): 21-27. TAN Yiqiu, LI Luoke, WEI Peng, et al. Application performance evaluation on material of automobile exhaust degradation in asphalt pavement[J]. China Journal of Highway and Transport, 2010, 23(6): 21-27. [10] 钱国平, 王娜, 周大垚. 纳米TiO2基路面功能涂层降解NO试验研究[J]. 交通科学与工程, 2016, 32(1): 29-32+38. QIAN Guoping, WANG Na, ZHOU Dayao. Experimental investigation of the degradation of NOx by Nano-TiO2 pavement functional coating on purification NO[J]. Journal of Transport Science and Engineering, 2016, 32(1): 29-32+38. [11] 郭重霄, 郝培文. 二氧化钛光催化剂在沥青路面中的应用[J]. 中外公路, 2013, 33(5): 271-275. GUO Chongxiao, HAO Peiwen. Application of titanium dioxide photocatalyst in asphalt pavement[J]. Journal of China & Foreign Highway, 2013, 33(5): 271-275. [12] 周大垚. 纳米TiO2涂覆式沥青路面NOx降解性能研究[D]. 长沙: 长沙理工大学, 2014. ZHOU Dayao. Study on NOx degradation performance of nano TiO2 coated asphalt pavement. Changsha: Changsha University of Science & Technology, 2014. [13] 陈俊, 周政, 孙志林, 等. 彩色路面反射率和内部温度的室内测试分析[J]. 哈尔滨工业大学学报, 2020, 52(9): 159-166. CHEN Jun, ZHOU Zheng, SUN Zhilin, et al. Laboratory measurement for albedo and internal temperature of colored pavement[J]. Journal of Harbin Institute of Technology, 2020, 52(9): 159-166.

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