[1]徐鸥明,徐仁涛,李 洋,等.水泥路面沥青薄层罩面层间抗剪强度及影响[J].郑州大学学报(工学版),2023,44(05):121-126.[doi:10.13705/j.issn.1671-6833.2023.02.004]
　XU Ouming,XU Rentao,LI Yang,et al.Shear Strength and Influence of Thin Asphalt Overlays on Cement Pavement[J].Journal of Zhengzhou University (Engineering Science),2023,44(05):121-126.[doi:10.13705/j.issn.1671-6833.2023.02.004]
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水泥路面沥青薄层罩面层间抗剪强度及影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
44
期数:
2023年05期
页码:
121-126
栏目:
出版日期:
2023-08-20

文章信息/Info

Title:
Shear Strength and Influence of Thin Asphalt Overlays on Cement Pavement
作者:
徐鸥明1;  徐仁涛2;  李 洋2;  韩 森1
1. 长安大学 特殊地区公路工程教育部重点实验室,陕西 西安 710064; 2. 长安大学 材料科学与工程学院,陕西 西 安 710061
Author(s):
XU Ouming;  XU Rentao;  LI Yang;  HAN Sen
关键词:
水泥路面;  沥青罩面;  抗剪强度;  混合料类型;  黏层油;  表面构造;  灰关联
Keywords:
cement concrete pavement;  asphalt overlay;  shear strength;  types of mixture;  tack coat oil;  surface properties;  grey correlation
分类号:
U416. 2
DOI:
10.13705/j.issn.1671-6833.2023.02.004
文献标志码:
A
摘要:
针对旧水泥混凝土路面沥青薄层罩面易发生推移等破坏问题,选取 3 种黏层油(普通乳化沥青、SBS 改性 乳化沥青、自制高性能乳化沥青) 、3 种罩面层沥青混合料( AC-10、SMA-10、DTFC-10) 以及 3 种混凝土板表面粗糙 状况(原状、凿毛、刻槽) ,通过直接剪切试验对黏层油类型及用量、罩面层沥青混合料类型、水泥路面表面构造等因 素对层间抗剪强度的影响进行了研究,并运用灰色理论分析了不同因素的影响程度。 结果表明:黏层油种类对层 间抗剪强度有显著影响,层间抗剪强度随黏层油用量增加呈先增大后减小趋势,且黏层油用量为 0. 8 L / m 2 时,层 间抗剪强度达最大值;罩面层沥青混合料类型对层间抗剪强度也有影响,加铺超薄磨耗层 DTFC-10 罩面后层间抗 剪强度明显高于其他 2 种混合料;水泥混凝土板表面粗糙状况对层间抗剪强度也有影响,凿毛表面略高于刻槽,但 明显高于原状表面。 灰关联分析表明:影响层间抗剪强度的关键因素是罩面层混合料类型和黏层油,水泥混凝土 板表面粗糙状况和黏层油用量也对其有一定影响。
Abstract:
In view of shear failure of thin asphalt overlays on old cement concrete pavement, three types of tack coat oil ( ordinary emulsified asphalt, SBS modified emulsified asphalt and self-made high-performance emulsified asphalt) , three types of overlay mixtures (AC-10, SMA-10 and DTFC-10) and three kinds of underlying surface roughness ( initial texturing, chiseling, and grooving) were selected to prepared compound pavement. The effects of various factors, such as the type and dosage of the tack coat oil, the type of the overlay mixtures and the surface roughness of the existing cement pavement, on the interlayer shear strength were evaluated by the direct shear test. In addition, the influence degrees of various factors were analyzed though gray theory. The results showed that the type of tack coat oil had a significant effect on the interlayer shear strength. Furthermore, the interlayer shear strength first increased and then decreased with the increase of the tack coat oil consumption. And the shear strength reached the maximum value when the amount of the tack coat oil was 0. 8 L / m 2 . The effects of the overlay asphalt mixtures type on the interlayer shear strength were significant, and the values of ultra-thin wear course DTFC-10 were greater than other two mixtures. The surface textural behavior of concrete pavement also had positive contribution to the interlayer shear strength. The shear strength values of underlying surface treated by chiseling method were slightly higher than that treated by grooving method. While, the values of those two textured surface were obviously greater than the initial surface. Gray correlation analysis revealed that the interlayer shear strength were notable dependent on the thin HMA overlays and the tack coat oil. Moreover, the surface texture of cement concrete pavement and the consumption of tack coat oil also had a certain influence.

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更新日期/Last Update: 2023-09-04