水稳基层层间力学性能及影响因素分析

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (3): 1182-1190.

• 道路材料 • 上一篇

水稳基层层间力学性能及影响因素分析

豆莹莹^1,2, 许新权^1,2, 李善强^1,2, 陈楚鹏^1,2

1.广东华路交通科技有限公司,广州 510420;
2.广东交科技术研发有限公司,广州 510550

收稿日期:2024-07-30 修订日期:2024-10-06 出版日期:2025-03-15 发布日期:2025-04-01
作者简介:豆莹莹(1991—),女,工程师。主要从事道路材料及沥青路面养护的研究。E-mail:1435088625@qq.com
基金资助:
广东省交通厅清单项目(2023-QD1-01);广东省交通集团科技项目(JT2022YB37)

Interlayer Mechanical Performance of Cement Stabilized Base and Analysis of Influencing Factors

DOU Yingying^1,2, XU Xinquan^1,2, LI Shanqiang^1,2, CHEN Chupeng^1,2

1. Guangdong Hualu Transport Technology Co., Ltd., Guangzhou 510420, China;
2. Guangdong Jiaoke Technology R & D Co., Ltd., Guangzhou 510550, China

Received:2024-07-30 Revised:2024-10-06 Published:2025-03-15 Online:2025-04-01

摘要/Abstract

摘要： 为研究水稳基层层间结合状态及双层连续铺筑层间性能的影响因素,应用BISAR 3.0软件计算了基层层间接触为完全连续、部分连续和接近光滑状态下的路面结构力学响应,通过直接剪切和直接拉拔试验,探究了水稳混合料级配、层间水泥浆用量、水灰比及下层压实度对双层连续铺筑基层力学性能的影响。结果表明:提高上下基层层间结合程度,可显著提高上基层的疲劳寿命,改善路面整体结构受力状况,提升路面耐久性和使用寿命;粗级配的层间抗剪强度最大,但抗拉强度略有减小,适当提高粗集料含量可增强上下基层层间强度;当层间水泥浆用量为55 g(0.311 g/cm²)且水灰比为1.0∶1.5时,双层水稳基层层间结合强度最大;层间抗剪和抗拉强度均随下基层压实度的增加呈先增大后减小的变化趋势,建议下基层压实度控制在93%~95%,即可进行上基层的摊铺及碾压。

关键词: 水稳基层, 双层连续铺筑, 力学分析, 层间结合状态, 层间性能

Abstract: In order to study interlayer bonding state of cement stabilized base and the influencing factors of the performance of double-layer continuous paving interlayer, BISAR 3.0 software was used to calculate the mechanical response of pavement structure under the condition that the contact between the interlayer of base was completely continuous, partially continuous and close to smooth. Through direct shear and direct pull-out tests, the effects of water-stabilized mixture gradation, interlayer cement slurry dosage, water-cement ratio and lower base compaction on the mechanical properties of double-layer continuous paving base were explored. The results show that improving the bonding degree between upper and lower base interlayer can significantly improve the fatigue life of upper base, improve the stress state of overall pavement structure, and improve durability and service life of pavement. The interlayer shear strength of coarse gradation is the largest, but the tensile strength decreases slightly. The interlayer strength of upper and lower base can be enhanced by increasing coarse aggregate dosage. When the interlayer cement slurry dosage is 55 g (0.311 g/cm²) and the water-cement ratio is 1.0∶1.5, the interlayer bonding strength of double-layer cement stabilized base is the largest. The shear strength and tensile strength of interlayer increase first and then decrease with the increase of compaction degree of lower base. It is suggested that the compaction degree of lower base should be controlled at 93%~95%, then the paving and rolling of upper base can be carried out.

Key words: cement stabilized base, double-layer continuous paving, mechanical analysis, interlayer bonding state, interlayer performance

中图分类号:

U414

豆莹莹, 许新权, 李善强, 陈楚鹏. 水稳基层层间力学性能及影响因素分析[J]. 硅酸盐通报, 2025, 44(3): 1182-1190.

DOU Yingying, XU Xinquan, LI Shanqiang, CHEN Chupeng. Interlayer Mechanical Performance of Cement Stabilized Base and Analysis of Influencing Factors[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(3): 1182-1190.

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水稳基层层间力学性能及影响因素分析

Interlayer Mechanical Performance of Cement Stabilized Base and Analysis of Influencing Factors

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