Performance evaluation of hot asphalt concrete with incorporation of RAP

Materia

Klamt, Rodrigo André¹  Cunha, Cristiane Bolina da²  Budny, Jaelson³ 

[1] Universidade Federal de Santa Maria, Santa Maria, Brasil;Universidade Federal do Pampa, Alegrete, Brasil;Universidade Regional Integrada do Alto Uruguai e das Missões, Frederico Westphalen, Brasil

关键词: RAP;    recycling;    dosing;    paving.;   

DOI  :  10.1590/s1517-707620180003.0520

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

The scarcity of natural resources and the demand for alternative reuse of materials has made recycling a slogan in the current scenario of global road construction. A floor milling (Recycled Asphalt Pavement РRAP) yields a material with high economic value and excellent physical and mechanical properties that may be introduced in the composition of new asphalt mixtures, from 2.5% to 4.5%. This study evaluated the mechanical mixtures machined hot with addition of different amounts of new binder behavior. The study material comes from the Brazilian Highway 290 (BR-290), passage located between the municipalities of Rosario do Sul and Ṣo Gabriel, in the state of Rio Grande do Sul (RS). For characterization of the milled material was performed assays grading, bitumen extraction, Marshall stability and creep and tensile strength by diametral-compression proof bodies of cylindrical specimens molded in accordance with the proposals mixtures. According to the results, we obtained values of stability, creep and tensile strength by diametral compression, suitable for the application of milled material (50% and 100% addition) in asphalt mixtures for layers bearing. Therefore, the reuse of this material, in the proportions evaluated, from the pavement itself, in addition to meeting the technical specifications, also appears as a solution for the avoid inadequate deposition of the same, reducing environmental passive.

【 授权许可】

CC BY