路面材料和结构对双层青表面一次性铺路的低温裂纹阻力的影响
Bingyang Wu1, Zhanchuang Han2,3, Yunbo Mao3
1School of Transportation, Inner Mongolia University, Hohhot 010031, China.
Materials (Basel, Switzerland)
|March 13, 2025
概括
双层一次性铺路可显著增强青路面.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
背景情况:
- 传统的青铺路方法往往导致低于最佳的层间粘附和稳定性.
- 低温裂纹是青路面在寒冷气候中的耐用性的一个重大挑战.
研究的目的:
- 为了研究双层一次性铺路技术对青路面在-10°C的低温裂纹耐受性的影响.
- 评估不同铺路技术,青混合物组合和结构层厚度对路面性能的影响.
主要方法:
- 双层一次性铺路与传统的层层地铺路方法的比较.
- 对各种青混凝土 (AC) 混合物组合的分析 (例如,AC-13,AC-16,AC-20,AC-25).
- 评估不同的结构层厚度组合 (例如,5厘米+5厘米,4厘米+6厘米,3厘米+7厘米).
主要成果:
- 与传统方法相比,双层一次性铺路至少增加了14%的最大拉伸力和至少20%的曲力能量密度.
- 特定的混合物组合,如AC-16 + AC-20,在抗裂度指标上显著改善.
- 较薄的上层与较厚的下层相结合 (例如3厘米+7厘米) 显示出更好的性能.
结论:
- 双层一次性铺路技术为青路面提供了优越的低温裂纹耐受性.
- 在-10°C的最佳性能是通过3厘米的AC-16上层和7厘米的AC-20下层实现的.
- 这项技术为在寒冷地区建造更耐用的青路面提供了宝贵的见解.
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