离析对湿热地区沥青混合料长期水稳定性的影响

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (3): 1094-1101.

离析对湿热地区沥青混合料长期水稳定性的影响

杨智敏¹, 曾国鹏², 郭寅川², 肖葳¹, 毛松纯², 牟戈²

1.嘉兴市交通工程质量安全服务中心,嘉兴 314000;
2.长安大学特殊地区公路工程教育部重点实验室,西安 710064

收稿日期:2021-09-22 修回日期:2021-12-23 出版日期:2022-03-15 发布日期:2022-04-08
通讯作者: 曾国鹏,硕士研究生。E-mail:guopengzeng@163.com
作者简介:杨智敏(1966—),男,高工。主要从事交通工程研究。E-mail:1412271567@qq.com
基金资助:
浙江省交通工程管理中心科技项目(ZJ201907)

Effect of Segregation on Long-Term Water Stability of Asphalt Mixture in Hot and Humid Area

YANG Zhimin¹, ZENG Guopeng², GUO Yinchuan², XIAO Wei¹, MAO Songchun², MOU Ge²

1. Jiaxing Traffic Engineering Quality and Safety Service Center, Jiaxing 314000, China;
2. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China

Received:2021-09-22 Revised:2021-12-23 Online:2022-03-15 Published:2022-04-08

摘要/Abstract

摘要： 为探究离析对湿热地区沥青混合料长期水稳定性的影响,分别设计了级配离析、温度离析两种模拟方案。通过排水法测试沥青混合料的空隙率,采用浸水马歇尔试验测试沥青混合料的残留稳定度,基于非线性拟合法分析了不同干湿循环周期的沥青混合料残留稳定度数据,得到了各离析状态下沥青混合料水稳定性的衰减曲线及规律。结果表明:随着干湿循环的进行,不同离析类型的沥青混合料的空隙率均会增加,但增幅有限;细集料离析在干湿循环状态下不易出现强度损耗,第10次干湿循环后,残留稳定度为87.8%;而重度离析条件下,第1次干湿循环后残留稳定度仅为79.8%,第10次干湿循环后,残留稳定度下降到67.4%;无论是否有离析,干湿循环的作用效果都存在转折点,即干湿循环前期的作用显著,到达转折点后,作用效果明显放缓;随着离析程度的加重,残留稳定度下降的转折点将逐渐前移,表明其长期水稳定性也越差。

关键词: 沥青混合料, 湿热地区, 长期水稳定性, 道路工程, 离析, 干湿循环

Abstract: In order to explore the effect of segregation on the long-term water stability of asphalt mixture in hot and humid area, two simulation schemes of gradation segregation and temperature segregation were designed respectively. The void ratio of the asphalt mixture was tested by the drainage method, and the residual stability of the asphalt mixture was tested by the immersion Marshall test. Based on the nonlinear fitting method, the datas of residual stability of the asphalt mixture with different dry-wet cycles were analyzed, and the decay curves and the law of water stability of asphalt mixture were obtained under different states of segregation. The research results show that with the dry-wet cycles progress, the void ratio of asphalt mixtures with different types of segregation increases, but the increase is limited. After ten times of dry-wet cycles, the residual stability is 81.8%, indicating that the fine aggregate segregation is not easy to cause strength loss under the dry-wet cycles. Under the condition of severe segregation, the residual stability decreases to 79.8% after the first dry-wet cycle, and then decreases to 67.4% after the 10th dry-wet cycles. Whether there is segregation or not, the effect of dry-wet cycles has a turning point, that is, the effect of dry-wet cycles in the early stage is obvious, and the effect significantly slows down after reaching the turning point. As the degree of segregation increases, the turning point of the residual stability gradually moves forward, indicating its long-term water stability becomes worse.

Key words: asphalt mixture, hot and humid area, long-term water stability, road engineering, segregation, dry-wet cycle

中图分类号:

U414

杨智敏, 曾国鹏, 郭寅川, 肖葳, 毛松纯, 牟戈. 离析对湿热地区沥青混合料长期水稳定性的影响[J]. 硅酸盐通报, 2022, 41(3): 1094-1101.

YANG Zhimin, ZENG Guopeng, GUO Yinchuan, XIAO Wei, MAO Songchun, MOU Ge. Effect of Segregation on Long-Term Water Stability of Asphalt Mixture in Hot and Humid Area[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 1094-1101.

参考文献

[1] 要艳君.高速公路沥青路面使用性能评价与病害处治对策研究[D].西安:长安大学,2019.
YAO Y J. Study on evaluation and disease treatment countermeasures of expressway asphalt pavement performance[D]. Xi'an: Chang'an University, 2019 (in Chinese).
[2] 彭余华.沥青混合料离析特征判别与控制方法的研究[D].西安:长安大学,2006.
PENG Y H. Research on characteristics distinguishing and controlling means of the segregation in asphalt mixture[D]. Xi'an: Chang'an University, 2006 (in Chinese).
[3] CHUN S, KIM K, PARK B, et al. Evaluation of the effect of segregation on coarse aggregate structure and rutting potential of asphalt mixtures using dominant aggregate size range (DASR) approach[J]. KSCE Journal of Civil Engineering, 2018, 22(1): 125-134.
[4] 周志刚,熊奎元,罗根传,等.Sasobit温拌沥青混凝土碾压温度离析研究[J].公路交通科技,2016,33(1):14-21.
ZHOU Z G, XIONG K Y, LUO G C, et al. Research of rolling temperature segregation of sasobit warm mixed asphalt concrete[J]. Journal of Highway and Transportation Research and Development, 2016, 33(1): 14-21 (in Chinese).
[5] WU W L, TU Z X, ZHU Z H, et al. Effect of gradation segregation on mechanical properties of an asphalt mixture[J]. Applied Sciences, 2019, 9(2): 308.
[6] YU H N, YANG M, QIAN G P, et al. Gradation segregation characteristic and its impact on performance of asphalt mixture[J]. Journal of Materials in Civil Engineering, 2021, 33(3): 04020478.
[7] 符煌.沥青混凝土路面病害的成因分析和防治措施[J].公路交通科技(应用技术版),2011,7(11):90-91.
FU H. Analysis of causes and preventive measures of asphalt concrete pavement diseases[J]. Transportation Research and Development(Applied Technology Edition), 2011, 7(11): 90-91 (in Chinese).
[8] 谭忆秋,姚李,王海朋,等.沥青路面结构早期损坏层位分析及对策研究[J].公路交通科技,2012,29(5):13-18+29.
TAN Y Q, YAO L, WANG H P, et al. Analysis of asphalt pavement structural premature damage position and countermeasure[J]. Journal of Highway and Transportation Research and Development, 2012, 29(5): 13-18+29 (in Chinese).
[9] 申爱琴,张争奇,王娜.SMA混合料水稳定性及影响因素研究[J].公路,2004,49(8):149-157.
SHEN A Q, ZHANG Z Q, WANG N. Research on water stability and influencing factors of SMA mixture[J]. Highway, 2004, 49(8): 149-157 (in Chinese).
[10] 杨美荣.浅析沥青混凝土路面产生水损害的原因[J].公路,2011,56(4):114-117.
YANG M R. Analysis of asphalt concrete pavement water damage and its reasons[J]. Highway, 2011, 56(4): 114-117 (in Chinese).
[11] 姜旺恒,李智,张肖宁.级配离析对沥青混合料抗水损坏能力的影响研究[J].公路交通科技,2010,27(2):10-15.
JIANG W H, LI Z, ZHANG X N. Effect of gradation segregation on resistance of moisture-induced damage of asphalt mixture[J]. Journal of Highway and Transportation Research and Development, 2010, 27(2): 10-15 (in Chinese).
[12] 韩冷.沥青混合料离析成因分析及对其路用性能影响研究[D].重庆:重庆交通大学,2019.
HAN L. Analysis of the cause of segregation of asphalt mixture and its influence on road performance[D]. Chongqing: Chongqing Jiaotong University, 2019 (in Chinese).
[13] 张争奇,郭大同,胡红松,等.沥青混合料级配离析模拟及判定标准研究[J].武汉大学学报(工学版),2018,51(3):245-251.
ZHANG Z Q, GUO D T, HU H S, et al. Study of asphalt mixture gradation segregation simulation and decision criteria[J]. Engineering Journal of Wuhan University, 2018, 51(3): 245-251 (in Chinese).
[14] 李美华.季冻区沥青混合料离析测评、预防与控制关键技术研究[D].西安:长安大学,2009.
LI M H. Study on detecting and evaluating, precauting and controlling key technology of asphalt mixture segregation in the seasonal frozen region[D]. Xi'an: Chang'an University, 2009 (in Chinese).
[15] 钟昆志,罗蓉,樊向阳,等.空隙率对砾石沥青混合料浸水抗车辙性能的影响[J].武汉理工大学学报(交通科学与工程版),2016,40(6):1083-1087.
ZHONG K Z, LUO R, FAN X Y, et al. Effect of air voids on the anti-rutting performance of water-immersed gravel asphalt mixture[J]. Journal of Wuhan University of Technology (Transportation Science & Engineering), 2016, 40(6): 1083-1087 (in Chinese).
[16] 姜继斌.动水冲刷与冻融循环共同作用下沥青混合料的水稳定研究[D].兰州:兰州理工大学,2019.
JIANG J B. Water stability of asphalt mixture with combined dynamic water scouring and freeze-thaw cycles[D]. Lanzhou: Lanzhou University of Technology, 2019 (in Chinese).
[17] 欧金秋.沥青路面水损坏的动水压力驱动机理研究[D].济南:山东大学,2012.
OU J Q. Dynamic pore water pressure driving mechanism research of asphalt pavement moisture damage[D]. Jinan: Shandong University, 2012 (in Chinese).