Performance evaluation of polyamine anti-stripping additives

Autor:	Reza Imaninasab, Sajjad Joodaki
Rok vydání:	2019
Předmět:	Materials science Aggregate (composite) Stripping (chemistry) Moisture Rut chemistry.chemical_compound Creep chemistry Mechanics of Materials Asphalt Ultimate tensile strength General Materials Science Composite material Polyamine Civil and Structural Engineering
Zdroj:	Proceedings of the Institution of Civil Engineers - Construction Materials. 172:155-163
ISSN:	1747-6518 1747-650X
Popis:	Polyamine anti-stripping additives in asphalt mixes are chemical chains that bond chemically with an acidic siliceous aggregate at one end and an asphalt binder at the other. They help to prevent the hydro-oxide of siliceous aggregates from reacting with water molecules, which can lead to a breakdown of the asphalt mix. The effect of two proprietary polyamine-based anti-strippers, Wetfix and Tackamin-200, on moisture susceptibility, the resilient modulus and rutting performance were evaluated at percentages from 3 to 6% with increments of 0·1%. Wet and dry indirect tensile strength, the indirect tensile resilient modulus and dynamic creep tests were used to assess the moisture susceptibility, structural response and rutting resistance of treated asphalt mixes. The results indicated that 0·5% was the optimum dosage for both additives with respect to all performed tests, with Wetfix being more efficient. Overall, it was found that the impact of the anti-stripping agents on moisture susceptibility was significant.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b9f6d62922d0fa6f5b08b8eec1e171fe https://doi.org/10.1680/jcoma.15.00066 Zobrazit plný text záznamu