Mechanical performance assessment of half warm recycled asphalt mixes containing up to 100 % RAP

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Materiales de Construccion Pub Date : 2017-07-26 DOI:10.3989/MC.2017.05116

J. Lizárraga, A. J. D. Barco-Carrión, A. Ramirez, P. Díaz, F. Moreno-Navarro, M. C. Rubio

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引用次数: 8

Abstract

The use of Half Warm Mixes with high Reclaimed Asphalt content (HWMRA) has the potential to generate significant environmental advantages such as the reduction in consumption of natural resources and the emission of gases into the atmosphere. This paper therefore focuses on demonstrating the viability of using these types of mixes in wearing courses. For this purpose, an HWMRA with 70 % and 100 % Reclaimed Asphalt Pavement (RAP) and emulsion were designed in the laboratory. The performance of the mixes was then assessed and compared with that of conventional Hot Mix Asphalt. In a second stage, the mixes were manufactured in-plant, and laid and compacted in an Accelerated Pavement Test track. The cores were then extracted and tested for stiffness modulus and resistance to fatigue. The results from the tests conducted with both the laboratory specimens and the cores showed that the performance of HWMRA is comparable to that of HMA. These findings encourage greater confidence in promoting the use of these types of sustainable asphalt mixes.

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含有高达100% RAP的半温再生沥青混合料的机械性能评估

使用具有高再生沥青含量(HWMRA)的半温混合料有可能产生显着的环境优势，例如减少自然资源的消耗和向大气中排放气体。因此，本文的重点是证明在穿着课程中使用这些类型的混合物的可行性。为此，在实验室设计了含有70%和100%再生沥青路面(RAP)和乳液的HWMRA。然后对混合料的性能进行了评价，并与常规热拌沥青进行了比较。在第二阶段，混合料在工厂内制造，并在加速路面测试轨道上铺设和压实。然后提取芯并进行刚度、模量和抗疲劳性能测试。对实验室试样和岩心进行的试验结果表明，HWMRA的性能与HMA相当。这些发现鼓励人们对推广使用这些类型的可持续沥青混合料更有信心。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materiales de Construccion 工程技术-材料科学：综合

CiteScore

3.20

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： Materiales de Construcción is a quarterly, scientific Journal published in English, intended for researchers, plant technicians and other professionals engaged in the area of Construction, Materials Science and Technology. Scientific articles focus mainly on: - Physics and chemistry of the formation of cement and other binders. - Cement and concrete. Components (aggregate, admixtures, additions and similar). Behaviour and properties. - Durability and corrosion of other construction materials. - Restoration and conservation of the materials in heritage monuments. - Weathering and the deterioration of construction materials. - Use of industrial waste and by-products in construction. - Manufacture and properties of other construction materials, such as: gypsum/plaster, lime%2