当前位置: X-MOL 学术Transp. Res. Rec. J. Transp. Res. Board › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Use of Blended Binder Tests to Estimate Performance of Mixtures with High Reclaimed Asphalt Pavement/Recycled Asphalt Shingles Content
Transportation Research Record: Journal of the Transportation Research Board ( IF 1.7 ) Pub Date : 2021-02-28 , DOI: 10.1177/0361198121997423
Yuan Zhang 1 , Daniel Swiertz 1 , Hussain U. Bahia 1
Affiliation  

The purpose of this study is to assess the use of blended binder tests to estimate mixture performance properties of high reclaimed asphalt pavement (RAP)/recycled asphalt shingles (RAS) mixtures utilizing recycling agents as a means to evaluate different recycling agents and estimate their doses for a given mixture. Blended binder properties are measured by using standard performance grading (PG) and PG+ test methods and correlating the results with corresponding performance properties of mixtures. Blended binders consisting of virgin and recovered binders and recycling agents were prepared and tested for PG grading properties, multiple stress creep recovery grades, and linear amplitude sweep fatigue life after the rolling thin-film oven and pressure aging vessel aging. Mixtures were tested for rutting resistance and cracking resistance at intermediate temperature and at low temperatures after being subjected to short-term oven aging and long-term oven aging. The correlation between the blended binder properties and mixture performance properties is used to identify the binder test parameters that can be used to predict the long-term performance of high RAP/RAS mixtures and the effects of various recycling agents. Results generally indicate that use of direct testing of recovered binders with recycling agents is an effective means to estimate required initial dose for recycling agent, and testing actual blended binders can be used to predict mixture performance-related properties for the testing conditions used in this study.



中文翻译:

使用混合粘结剂测试来评估具有高再生沥青路面/再生沥青瓦含量的混合料的性能

这项研究的目的是评估使用混合粘合剂测试来评估高再生沥青路面(RAP)/再生沥青瓦(RAS)混合物的混合物性能,并利用再生剂作为评估不同再生剂并估算其用量的手段对于给定的混合物。通过使用标准性能分级(PG)和PG +测试方法,将结果与混合物的相应性能相联系,可以测量共混的粘合剂性能。制备了由原始粘合剂和回收粘合剂和回收剂组成的混合粘合剂,并测试了PG分级性能,多个应力蠕变恢复等级以及滚动薄膜烘箱和压力老化容器老化后的线性振幅扫描疲劳寿命。在经受短期烘箱老化和长期烘箱老化之后,在中间温度和低温下测试混合物的耐车辙性和抗裂性。混合的粘合剂性能和混合物性能之间的相关性用于确定粘合剂测试参数,这些参数可用于预测高RAP / RAS混合物的长期性能以及各种回收剂的影响。结果通常表明,使用回收剂直接测试回收的粘合剂是估算回收剂所需初始剂量的有效手段,并且测试实际掺合的粘合剂可用于预测本研究中使用的测试条件下与混合物性能相关的特性。 。

更新日期:2021-03-01
down
wechat
bug