Degree of blending on hot and warm asphalt recycling

• Grant number: 19/08415-1
• Support Opportunities: Scholarships in Brazil - Master
• Start date: June 01, 2019
• End date: April 30, 2021
• Field of knowledge: Engineering - Civil Engineering - Transportation Infrastructure
• Principal Investigator: Kamilla Vasconcelos Savasini
• Grantee: Gustavo dos Santos Pinheiro
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 17/25708-7 - Rheology and chemistry of asphalt binders and biobinders: tools to the comprehension of mechanical behavior, aging and deterioration of pavements, AP.JP

Abstract

The insertion of recycled materials for paving is, in fact, a fundamental practice when aiming a more sustainable and economic development in the road sector. The use of RAP (Reclaimed Asphalt Pavement) is still uncommon in Brazil, especially in asphalt overlay, when compared to European countries and the United States, which have applied increasing proportions of this material to their asphalt mixtures. Nonetheless, not enough is known about the actual interaction between the aged asphalt binder presented in the RAP and the new binder applied into the recycled asphalt mixtures. The aim of this research is to understand the mechanism of this interaction in order to establish a laboratory method of extraction and recovery of the binder present in recycled mixtures and verify, with rheological and chemical tests, the amount of oxidized binder present in RAP which is activated during the production of the mixture and interacts with the new binder added. This is one of the main uncertainties regarding the use of RAP, and may cause variability in the performance of recycled asphalt mixtures. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PINHEIRO, GUSTAVO; VASCONCELOS, KAMILLA; BERNUCCI, LIEDI. Reclaimed Asphalt Pavement Binder Extraction and Recovery Evaluation and Their Effects on the Recycling Agent Assessment. TRANSPORTATION RESEARCH RECORD, v. N/A, p. 15-pg., 2022-06-05. (17/25708-7, 19/08415-1)

ESPINOSA, LEIDY V.; RODRIGUES, JULIA A.; VASCONCELOS, KAMILLA; BERNUCCI, LIEDI; POUGET, SIMON. Dose Methodology and Rejuvenating Effect of a Plant-Based Biobinder in Aged Asphalt Binders. TRANSPORTATION RESEARCH RECORD, v. N/A, p. 11-pg., 2023-04-21. (19/11354-4, 17/25708-7, 19/08415-1)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

PINHEIRO, Gustavo dos Santos. Evaluation of the asphalt binder extraction and recovery procedures in the recycled hot mix asphalt dosage.. 2021. Master's Dissertation - Universidade de São Paulo (USP). Escola Politécnica (EP/BC) São Paulo.