丁龙亭, 张凯星, 张梦媛,等. 基于GB5理论的超薄罩面混合料级配组成设计研究[J].河南理工大学学报(自然科学版)，doi:10.16186/j.cnki.1673-9787.（ 2024030008）..

DING L T, ZHANG K X, ZHANG M Y, et al． Study on mix proportion design of ultra-thin overlay mixture based on GB5 theory［J］. Journal of Henan Polytechnic University( Natural Science)， doi: 10.16186/j.cnki.1673-9787.（ 2024030008）..

基于GB5理论的超薄罩面混合料级配组成设计研究(网络首发)

丁龙亭1，张凯星2，张梦媛1，申全军1，王选仓3，周博3

1.山东高速集团有限公司创新研究院，山东 济南 250001; 2.中公高科养护科技股份有限公司，北京 100095; 3.长安大学公路学院，陕西 西安 710064

摘要:目的 薄层罩面作为路面预防性养护方案的一种，只有具备良好的耐久性才能为车辆安全顺畅行驶提供良好的条件。为了解决超薄罩面难压实、耐久性差的问题，本文提出一种新的级配组成设计方法对超薄罩面混合料进行级配组成设计。方法 基于集料的嵌挤理论，通过三直线方程理论提出GB5超薄罩面级配设计方法，得到混合料级配设计过程流程图，并利用贝雷法验证级配的合理性，与传统配合比设计的混合料进行易密实性能、路用性能及表面功能耐久性能对比验证。结果 结果表明：相比传统级配的沥青混合料，GB5设计级配下沥青混合料的压实能量指数CEI降低41.6%，压实速率K略大，综合CEI和K两个指标，得出GB5设计级配下沥青混合料更易于压实；GB5设计方法下沥青混合料的高温性能、低温性能得到很大的提升，高温稳定性提高了10.6%，低温破坏应变提高了19.6%，劲度模量降低了23.7%，残留稳定度和冻融劈裂强度分别提高了3.9%、3.7%，混合料水稳定性能略有提升；对混合料的表面功能耐久性能来说，磨耗30 000次后，传统级配的沥青混合料比GB5设计级配混合料的质量损失率约高出4.4%，且不同磨耗次数下构造深度均低于GB5设计级配的沥青混合料，试验证明GB5设计级配的沥青混合料具有更好的表面功能耐久性。结论 研究成果为超薄罩面级配设计提供了新思路，对超薄罩面的研究具有重要指导意义。

关键词: 道路工程；超薄罩面；GB5理论；级配设计；路用性能；表面功能

doi: 10.16186/j.cnki.1673-9787.（ 2024030008）..

基金项目: 国家自然科学基金资助项目（52308433）；重庆沪渝高速公路有限公司路面预防性养护技术研究（HYGS2019-040）；内蒙古自治区交通运输厅科技项目（NJ-2018-23）

收稿日期：2024-03-04

修回日期：2024-08-07

网络首发日期：2026-06-04

Study on mix proportion design of ultra-thin overlay mixture based on GB5 theory (Online)

DING Longting1, ZHANG Kaixing2, ZHANG Mengyuan1, SHEN Quanjun1, WANG Xuancang3, ZHOU Bo3

1. Innovation Research Institute, Shandong Hi-speed Group Co., Ltd, Jinan 250001, Shandong, China; 2. Zhong Gong Gao Ke Maintenance Technology Co., Ltd, Beijing 100095, China; 3. School of Highway, Chang'an University, Xi 'an 710064, Shaanxi, China

Abstract: Objective As one of the most popular preventive maintenance of road surface, the ultra-thin overlay with good durability and surface function could provide better conditions for the safe and smooth running of vehicles. In order to solve the problems of compaction and poor durability of ultra-thin surface, a new gradation design method was proposed for the gradation design of ultra-thin coating mixture. Methods Based on the aggregate extrusion theory, the design method of GB5 ultra-thin surface gradation was proposed through the three-line equation theory , and the design process flow chart of the mixture grading was obtained. The rationality of gradation was verified by the Bayley method, and the compactness, road performance and surface functional durability of the mixture were compared and verified with the traditional mix ratio design mixture. Results The results show that, compared with the traditional graded asphalt mixture, the compaction energy index (CEI) of asphalt mixture with GB5 design grading is reduced by 41.6%, and the compaction rate (K) is slightly larger. By combining CEI and K, it can be concluded that the asphalt mixture with GB5 design grade is easier to be compactified. Under the GB5 design method, the high and low temperature performance of the mixture is greatly improved, the high temperature stability is increased by 10.6%, the low temperature failure strain is increased by 19.6%, the stiffness modulus is reduced by 23.7%, the residual stability and the freeze-thaw splitting strength are increased by 3.9% and 3.7% respectively, and the water stability is slightly improved. For the surface functional durability of the mixture, after 30 000 wear times, the mass loss rate of the traditional grade GB5 design grade mixture is about 4.4% higher, and the structure depth of different wear times is lower than that of the GB5 design grade mixture, and the GB5 design grade asphalt mixture has better surface functional durability. Conclusions The research results provide a new idea for the gradation design of ultra-thin finish and have important guiding significance for the research of ultra-thin finish.

Key words: road engineering；ultra-thin surface；GB5 theory；gradation design； road performance；surface function