[1]李彩霞,杨建华,张苛.热阻式沥青混合料的隔热降温特性与路用性能评价[J].西安建筑科技大学学报(自然科学版),2019,51(03):375-382,395.[doi:10.15986/j.1006-7930.2019.03.011]
　LI Caixia,YANG Jianhua,ZHANG Ke.Heat insulation and cooling characteristics of thermal resistance asphalt mixture and evaluation of its pavement performance[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(03):375-382,395.[doi:10.15986/j.1006-7930.2019.03.011]
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热阻式沥青混合料的隔热降温特性与路用性能评价()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年03期
页码:
375-382,395
栏目:
出版日期:
2019-06-30

文章信息/Info

Title:
Heat insulation and cooling characteristics of thermal resistance asphalt mixture and evaluation of its pavement performance
文章编号:
1006-7930(2019)03-0375-08
作者:
李彩霞1; 杨建华2; 张苛3
（1.陕西交通职业技术学院 公路与铁道工程学院，陕西 西安 710018；2.长安大学 公路学院，陕西 西安 710064；3.阜阳师范学院 信息工程学院，安徽 阜阳 236041）
Author(s):
LI Caixia1; YANG Jianhua2; ZHANG Ke3
(1.Department of Highway and Railway Engineering, Shaanxi College of Communication Technology, Xi′an 710018, China; 2.School of Highway Engineering, Chang′an University, Xi′an 710064, China; 3.College of Information Engineering, Fuyang Normal University, Anhui Fuyang 236041, China)
关键词:
道路工程; 煅烧铝矾石; 沥青混合料; 升温过程; 隔热降温; 路用性能
Keywords:
road engineering;  calcined bauxite;  asphalt mixture;  heating process;  heat insulation and cooling;  pavementperformance
分类号:
U416.3
DOI:
10.15986/j.1006-7930.2019.03.011
文献标志码:
A
摘要:
为减轻沥青路面高温车辙病害及路面高温对城市“热岛效应”的影响，提出采用煅烧铝矾石等质量替换混合料中部分粗集料的方法，以达到隔热降温的目的.通过自制室内模拟太阳辐射试验设备，探究了煅烧铝矾石在不同掺量下AC-13混合料车辙板试件的升温过程和降温行为，对比分析了AC-13和SMA-13混合料的隔热降温性能，并确定了煅烧铝矾石的最佳掺量；在此基础上，评价了两种热阻式沥青混合料的路用性能.结果表明：AC-13混合料试件不同厚度处的升温过程和降温行为具有差异性，试件不同厚度处的降温幅度大小关系为：下表面>中位置>上表面；依据降温幅度和经济性，推荐煅烧铝矾石在AC-13和SMA-13混合料中的最佳掺量分别为60%和80%；最佳掺量条件下的AC-13和SMA-13混合料具有优异的高温性能、良好的低温性能和抵抗水热耦合作用的能力，但其水稳性能相对不足.因此，依据沥青路面气候分区原则，建议将其用于年降雨量小于1 000 mm的湿润区、半干旱区和干旱区，或采取添加抗剥落剂等措施，以改善其水稳性能.
Abstract:
In order to alleviate the high temperature rutting disease of asphalt pavement and to reduce the influence of its high temperature on urban heat island effect, the measure that some coarse aggregates in asphalt mixture are replaced equally in quality by calcined bauxite is taken to achieve the purpose of heat insulation and cooling. Through making test equipment used to simulate solar radiation indoors, the heating process and heat insulation and cooling behavior of rut sample of AC-13 mixture with different dosage of calcined bauxite were investigated in this paper. Also, the heat insulation and cooling properties of AC-13 and SMA-13 mixture were compared and analyzed, and the optimum dosage of calcined bauxite in AC-13 and SMA-13 mixture was determined respectively. On this basis, the pavement performance of two kinds of asphalt mixtures under the optimum dosage was evaluated respectively. The results show that the heating process and cooling behavior of AC-13 mixture samples at different thickness are different, and the magnitude of cooling at different depth is classified as lower surface>middle position>upper surface. Also, the optimum dosage of calcined bauxite in AC-13 and SMA-13 mixture is recommended as 60% and 80% respectively according to the cooling magnitude and economy. Moreover, compared with asphalt mixture that calcined bauxite is not added, the mixture of AC-13 and SMA-13 has excellent high-temperature performance, good low-temperature performance and the ability to resist the combined action of water and heat. But, its water stability is relatively insufficient. Therefore, it is suggested that it should be used in humid, semi-arid and arid areas where annual rainfall is less than 1 000 mm, or take measures to improve its resistance to water stability, such as adding anti-stripping agents.

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备注/Memo

备注/Memo:
收稿日期:2018-09-21修改稿日期:2019-05-05
基金项目:陕西省教育厅专项科研计划基金项目(17JK0070); 安徽高校自然科学研究基金项目(KJ2018A0668)
第一作者:李彩霞(1981-)，女，博士，副教授.主要从事道路与桥梁工程研究.E-mail：13309268689@163.com
更新日期/Last Update: 2019-07-22