Characterizing the chemical and rheological properties of severely aged reclaimed asphalt pavement materials with high recycling rate

2016 ◽  
Vol 111 ◽  
pp. 139-146 ◽  
Author(s):  
Shih-Hsien Yang ◽  
Li-Chun Lee
2021 ◽  
Vol 278 ◽  
pp. 122389
Author(s):  
Jie Gao ◽  
Jiangang Yang ◽  
Di Yu ◽  
Yu Jiang ◽  
Kaiguo Ruan ◽  
...  

2012 ◽  
Vol 549 ◽  
pp. 715-719
Author(s):  
Shao Wen Du ◽  
Chao Fei Liu

In this paper, cement is used to stabilize reclaimed asphalt pavement materials (RAP) and original aggregate with the same gradation. Compressive strength, freezing-thawing resistance and fatigue life of cement recycled RAP mixture (CRAPM) and cement stabilize original aggregate mixture (CSAM) are evaluated. Test results indicate the compressive adhesive strength of cement-RAP is lower than cement-original aggregate. At the same gradation, RAP has negative effect on the freezing-thawing resistance of CRAPM, and can increase the fatigue life sensitive to stress level. Therefore, for using 100% RAP, it is necessary to increase the cement content to properly improve the strength and durability of RAPM in order to satisfy the specification of cement stabilized base materials in china.


2021 ◽  
Vol 2089 (1) ◽  
pp. 012060
Author(s):  
Ajaykumar Sejvani ◽  
A.A. Amin ◽  
L.B. Zala

Abstract Reclaimed asphalt pavement (RAP) is one of the innovative and effective technologies in many places in the world. The utilization of RAP is rapidly increasing popularity and becoming an emerging technique in India. As per IRC-120:2015, removing or reprocessing pavement materials containing aggregates that are bitumen coated is termed as RAP. These materials are gained through a process in which the existing surface pavement is reclaimed and reused after processing for reconstruction, resurfacing, or repaving. Well graded and high-quality aggregate are achieved from this process. Proper utilization of RAP with specified properties and specified percentages, not only serve as an alternative useful pavement material but also helps in reducing the usage of natural construction material, that will directly reduce the overall cost of projects. By conducting tests as per MoRTH specifications (5th Revision), the various characteristics of RAP material and fresh aggregates are observed. The main objective of the study is to carry out the performance tests: Modified Proctor test on fresh material as well as on material mixed with reclaimed asphalt pavement i.e. 10%, 20%, and 30% of total mix and to achieve optimum moisture content and maximum dry density by using Modified Proctor Test. Attempts are carried out to design a new pavement using Indian Road Congress (I.R.C-37:2018) guidelines and utilization of RAP material. Economic benefits are calculated in terms of fresh and RAP (10%, 20%, and 30%) mix material pavement.


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