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Addressing the Healing Compensation on Fatigue Damage of Asphalt Binder Using TSH and LASH Tests
International Journal of Fatigue ( IF 6 ) Pub Date : 2022-09-24 , DOI: 10.1016/j.ijfatigue.2022.107292
Chao Wang , Guanyu Gong , Zhengyang Ren

This paper investigated the damage healing, local life compensation and intrinsic healing characteristics of asphalt binder. The damage healing (ΔS) is independent of damage level and the percent local life compensation (%ΔN) increases with a higher strain amplitude in TSH test. The integrated ΔSN analysis is recommended for the healing compensation characterization. The totally stored pseudo strain energy (PSE) to counteract healing recovery is linearly linked to the ΔS regardless of the loading modes, strain amplitudes and rest periods. A new parameter of average stored PSE (QH) is proposed to reveal the intrinsic healing potential and characteristics.



中文翻译:

使用 TSH 和 LASH 测试解决沥青粘合剂疲劳损伤的愈合补偿

本文研究了沥青结合料的损伤愈合、局部寿命补偿和内在愈合特性。损伤愈合 (Δ S ) 与损伤水平无关,并且局部寿命补偿百分比 (%Δ N ) 在 TSH 测试中随着应变幅度的增加而增加。对于愈合补偿特性,建议使用集成的ΔS -ΔN分析。无论加载模式、应变幅度和休息期如何,用于抵消愈合恢复的完全存储的伪应变能 (PSE) 与ΔS线性相关。提出了一个新的平均存储 PSE ( Q H ) 参数来揭示内在愈合潜力和特征。

更新日期:2022-09-25
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