[1]王伟,何荣森,石家乐,等.寒区路用灌缝胶低温性能与评估方法[J].长安大学学报(自然科学版),2025,45(5):41-53.[doi:10.19721/j.cnki.1671-8879.2025.05.004]
　WANG Wei,HE Rong-sen,SHI Jia-le,et al.Low-temperature performance and evaluation method of sealants in cold regions[J].Journal of Chang’an University (Natural Science Edition),2025,45(5):41-53.[doi:10.19721/j.cnki.1671-8879.2025.05.004]
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寒区路用灌缝胶低温性能与评估方法()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年5期
页码:
41-53
栏目:
道路工程
出版日期:
2025-09-30

文章信息/Info

Title:
Low-temperature performance and evaluation method of sealants in cold regions
文章编号:
1671-8879(2025)05-0041-13
作者:
王伟1; 2; 何荣森1; 石家乐1; 刘儒达1; 陈志国2; 沈若廷2
(1. 长春工程学院 土木工程学院,吉林 长春 130012; 2. 吉林省交通科学研究所,吉林 长春130012)
Author(s):
WANG Wei1; 2;  HE Rong-sen1;  SHI Jia-le1;  LIU Ru-da1;  CHEN Zhi-guo2;  SHEN Ruo-ting2
(1. School of Civil Engineering, Changchun Institute of Technology, Changchun 130012, Jilin, China; 2. Jilin Provincial Transport Scientific Research Institute, Changchun 130012, Jilin, China)
关键词:
路面工程;  寒区;  灌缝材料;  短期老化;  低温拉伸;  耗散能量法
Keywords:
Key words:pavement engineering;  cold region;  sealing material;  short-term aging;  low-temperature tensile;  dissipated energy method
分类号:
U416.217
DOI:
10.19721/j.cnki.1671-8879.2025.05.004
文献标志码:
A
摘要:
为弥补现行规范在评估寒区灌缝胶长期性能时未充分考虑高温老化、浸水和冻融循环等多因素耦合作用的不足,选取寒区道路养护工程中常用的4种-20 ℃和4种-30 ℃加热型灌缝胶样本开展系统性试验; 通过模拟实际寒区环境中的典型工况,分别测试了灌缝胶在短期高温老化、低温浸水和冻融循环作用后的黏附性能演变规律,并提出了基于改进耗散能量法的量化评价方法,以更科学地评估灌缝胶在复杂环境下的长期耐久性能。研究结果表明:高温老化作用显著削弱了灌缝胶的黏附性能,部分样本的黏附力下降幅度高达40%,表明热氧老化是导致材料性能退化的重要因素; 冻融循环作用进一步加速了黏附性能的衰减,最大降幅可达60%,造成的累积损伤不容忽视; 低温浸水后由于冰晶的临时黏附效应,灌缝胶的表观黏附力上升,在评估过程中需辨析真实黏附与临时增强效应; 提出的改进耗散能量法通过精准识别拉伸-拉断过程中的峰值承载状态,剔除峰值后无效或干扰性的耗散能量部分,显著提升了低温条件下性能评价的准确性,能有效捕捉-30 ℃和-20 ℃条件下灌缝胶在未老化、短期老化、浸水和冻融循环等不同状态下的黏附性能动态变化,清晰揭示材料性能衰退规律与长期服役潜力; 与现行规范及传统耗散能量法相比,提出的方法不仅综合考虑了寒区实际环境中的极端低温、温度波动、水分侵入及冻融损伤等多重环境因素,还可科学区分不同灌缝胶在特定环境应力下的性能差异,评价结果更具环境针对性与工程适用性。综上所述,提出的试验与评价方法可为寒区灌缝胶的材料优选与性能评估提供重要补充,并为相关规范的修订提供理论依据与数据支持。
Abstract:
To address the deficiency in current specifications that insufficiently consider the coupledeffects of multiple factors such as high-temperature aging, water immersion, and freeze-thaw cycles whenevaluating the long-term performance of sealants in cold regions, four -20 ℃ and four -30 ℃ heated type sealant samples commonly used in road maintenance projects in cold regions were selected for systematicexperimental research. By simulating typical working conditions in actual cold region environments, theevolution patterns of adhesive performance of sealants after short-term high-temperature aging, low-temperature water immersion, and freeze-thaw cycles were tested, respectively. An improved dissipatedenergy method was proposed to more scientifically evaluate the long-term durability of sealants incomplex environments. The research results show that high-temperature aging significantly weakens theadhesive performance of sealants. The adhesion of some samples decreases by up to 40%, indicating thatthe thermo-oxidative aging is an important factor causing the material performance degradation. Freeze-thaw cycles further accelerate the attenuation of adhesive performance, with the maximum decreasereaching 60%. The cumulative damage should not beignored. After low-temperature water immersion, the sealants exhibit an apparent increase in adhesion dueto the temporary adhesive effect of ice crystals, suggesting that during the evaluation, it is necessary todistinguish between true adhesion and temporary enhancement effects. The proposed improved dissipatedenergy method accurately identifies the peak load bearing state during the stretching-tensile fracturing process, removes invalid or interfering dissipated energy parts after the peak, and significantly improves theaccuracy of performance evaluation under low-temperature conditions. This method can effectivelycapture the dynamic changes in the adhesive performance of sealants under different conditions such asunaged, short-term aging, water immersion, and freeze-thaw cycles at -30 ℃ and -20 ℃. It clearly reveals the material performance degradation patterns and long-term service potential. Compared withcurrent specifications and traditional dissipated energy method, this method not only comprehensivelyconsiders multiple environmental factors in actual cold region environments such as extreme low-temperature, temperature fluctuation, water intrusion, and freeze-thaw damage, but also scientificallydistinguishes the performance differences between different sealants under specific environmental stresses.The evaluation results are more environmentally targeted and engineering applicable. In conclusion, theproposed experimental and evaluation methods can provide important supplements for material selectionand performance evaluation of sealants in cold regions and offer theoretical basis and data support for therevision of relevant specifications.4 tabs, 13 figs, 31 refs.

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备注/Memo

备注/Memo:
收稿日期:2024-03-23
基金项目:吉林省交通运输科技创新发展支撑项目(2022-1-1)
作者简介:王 伟(1982-),男,吉林长春人,教授,工学博士,E-mail:16695496@qq.com。
更新日期/Last Update: 2025-09-30