[1]张亚婕,白领群,吕海将,等.煤矸石粉沥青混凝土路用性能试验[J].长安大学学报(自然科学版),2022,42(5):33-42.[doi:10.19721/j.cnki.1671-8879.2022.05.004]
 ZHANG Ya-jie,BAI Ling-qun,LYU Hai-jiang,et al.Experimental on road performance of coal gangue powder asphalt concrete[J].Journal of Chang’an University (Natural Science Edition),2022,42(5):33-42.[doi:10.19721/j.cnki.1671-8879.2022.05.004]
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煤矸石粉沥青混凝土路用性能试验()
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长安大学学报(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
第42卷
期数:
2022年5期
页码:
33-42
栏目:
道路工程
出版日期:
2022-09-30

文章信息/Info

Title:
Experimental on road performance of coal gangue powder asphalt concrete
文章编号:
1671-8879(2022)05-0033-10
作者:
张亚婕1白领群2吕海将3陈渊召3
(1. 河南省科学技术情报中心,河南 郑州 450003; 2. 郑州黄河工程有限公司,河南 郑州 450008; 3. 华北水利水电大学 土木与交通学院,河南 郑州 450045)
Author(s):
ZHANG Ya-jie1 BAI Ling-qun2 LYU Hai-jiang3 CHEN Yuan-zhao3
(1. Science and Technology Information Center of Henan Province, Zhengzhou 450003, Henan, China; 2. Zhengzhou Yellow River Engineering Co., Ltd., Zhengzhou 450008, Henan, China; 3. School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, Henan, China)
关键词:
道路工程 路面工程 煤矸石粉沥青混合料 破坏机理 微观分析 形貌特征 路用性能
Keywords:
road engineering pavement engineering coal gangue powder asphalt mixture damage mechanism microscopic analysis appearance characteristic road performance
分类号:
U411
DOI:
10.19721/j.cnki.1671-8879.2022.05.004
文献标志码:
A
摘要:
为探究煤矸石粉替代矿粉的可行性及最佳替代量,分别采用不同替代量的煤矸石粉代替矿粉进行沥青混合料AC-16的路用性能分析。借助车辙试验、低温小梁弯曲试验、浸水马歇尔残留稳定度试验和冻融劈裂强度试验评价不同替代量煤矸石粉AC-16沥青混合料的高温稳定性、低温抗裂性和水稳定性; 采用三轴试验分析其抗剪强度; 利用三点弯曲法分析其疲劳性能; 并借助SEM和Image-Pro Plus对煤矸石粉和矿粉的微观结构进行对比,以揭示煤矸石粉对沥青胶浆的影响机理。研究结果表明:替代量(质量分数,下同)40%煤矸石粉沥青混合料高温稳定性、低温性能和水稳定性均满足规范要求,其动稳定度可达2 472次/mm; 且抗剪强度和抗疲劳性能最优,其黏结力C和内摩擦角φ分别为0.128 MPa和38.5°; 煤矸石粉与矿粉相比,其比表面积大、强度低、针片状含量高,使得其在一定替代量下可显著改善沥青混合料的路用性能。
Abstract:
In order to explore the feasibility and optimal replacement amount of coal gangue powder instead of mineral powder, the road performance of asphalt mixture AC-16 was analyzed by using different substitution proportions of coal gangue powder instead of mineral powder. The high temperature stability, low temperature crack resistance and water stability of AC-16 asphalt mixture with different substitution proportions of coal gangue powder were evaluated by rutting test, low temperature beam bending test, immersion Marshall residual stability test, and freeze-thaw splitting strength test. The shear strength was analyzed by triaxial test, and the fatigue performance was analyzed by three-point bending method. The microstructure of coal gangue powder and mineral powder was compared by SEM and Image-Pro Plus, to reveal the influence mechanism of coal gangue powder on asphalt mortar. The results show that the high-temperature stability, low-temperature performance and water stability of substitution proportion(mass fraction, the same below)40% coal gangue powder asphalt mixture meet the specification requirements, and its dynamic stability can reach 2 472 times/mm, and the shear strength and fatigue resistance are the best, and its bonding force C and internal friction angle φ are 0.128 MPa and 38.5°, respectively. Compared with mineral powder, coal gangue powder has large specific surface area, low strength and high needle flake content, which can significantly improve the road performance of asphalt mixture under certain dosage.7 tabs, 12 figs, 21 refs.

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备注/Memo

备注/Memo:
基金项目:河南省重点研发与推广专项科技攻关项目(182102210061)
作者简介:张亚婕(1975-),女,河南信阳人,工程师,E-mail:zyjxww@163.com。 通讯作者:陈渊召(1974-),男,河南许昌人,教授,工学博士,E-mail:cyz740513@ncwu.edu.cn。
更新日期/Last Update: 2022-09-30