当前位置: X-MOL 学术Int. J. Pavement Eng. › 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.)
Investigating the performance-related properties of crumb rubber modified bitumen using rheology-based tests
International Journal of Pavement Engineering ( IF 3.8 ) Pub Date : 2020-06-13 , DOI: 10.1080/10298436.2020.1776868
Mrinali Rochlani 1 , Sabine Leischner 1 , David Wareham 2 , Silvia Caro 3 , Gustavo Canon Falla 1 , Frohmut Wellner 1
Affiliation  

ABSTRACT

In recent years, crumb rubber (CR) has become an attractive option to modify bitumen. In this research, a set of Dynamic Shear Rheometer (DSR) tests were used were used to gauge the effect of two types of CR on different rheological and mechanical properties of CR bitumen (CRB). To achieve this goal, temperature and frequency sweep tests were conducted on three CRB and one penetration 50/70 reference bitumen, and Single Stress Creep Recovery (SSCR) tests were used to quantify the susceptibility of the bitumen to permanent deformation. Moreover, a new specialised cryogenic test and a recently developed fatigue test conducted on prismatic and cylindrical column bitumen samples, respectively, were implemented using the rheometer, and used to assess the low-temperature cracking and fatigue behaviour of the materials. The results indicate that the improvement in all performance-related properties by adding CR into bitumen can be evaluated by using one single device. A performance diagram developed by the authors was used to visualise and compare the effects of adding CR to the bitumen in regards to their rheological, low temperature, permanent deformation and fatigue performance properties.



中文翻译:

使用基于流变学的测试研究橡胶屑改性沥青的性能相关特性

摘要

近年来,橡胶屑 (CR) 已成为改性沥青的一种有吸引力的选择。在这项研究中,使用一组动态剪切流变仪 (DSR) 测试来衡量两种类型的 CR 对 CR 沥青 (CRB) 不同流变和机械性能的影响。为了实现这一目标,对三个 CRB 和一个渗透 50/70 参考沥青进行了温度和频率扫描测试,并使用单应力蠕变恢复 (SSCR) 测试来量化沥青对永久变形的敏感性。此外,使用流变仪分别对棱柱形和圆柱形沥青样品进行了新的专门低温试验和最近开发的疲劳试验,用于评估材料的低温开裂和疲劳行为。结果表明,通过将 CR 添加到沥青中,所有性能相关性能的改进都可以通过使用单个设备进行评估。作者开发的性能图用于可视化和比较在沥青中添加 CR 在流变、低温、永久变形和疲劳性能方面的影响。

更新日期:2020-06-13
down
wechat
bug