scholarly journals Laboratory investigation on the use of recycled materials in bituminous mixtures for dense-graded wearing course

2021 ◽  
Vol 15 ◽  
pp. e00556
Author(s):  
Claudia Nodari ◽  
Maurizio Crispino ◽  
Emanuele Toraldo
Keyword(s):  
Laboratory Investigation ◽  
Recycled Materials ◽  
Bituminous Mixtures

scholarly journals Energy and Environmental Life Cycle Assessment of Sustainable Pavement Materials and Technologies for Urban Roads

2020 ◽  
Vol 12 (2) ◽  
pp. 704 ◽  
Author(s):  
Filippo G. Praticò ◽  
Marinella Giunta ◽  
Marina Mistretta ◽  
Teresa Maria Gulotta
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Raw Materials ◽  
Crumb Rubber ◽  
Primary Energy ◽  
Cycle Phase ◽  
Reference Case ◽  
Recycled Materials ◽  
Bituminous Mixtures

Recycled and low-temperature materials are promising solutions to reduce the environmental burden deriving from hot mix asphalts. Despite this, there is lack of studies focusing on the assessment of the life-cycle impacts of these promising technologies. Consequently, this study deals with the life cycle assessment (LCA) of different classes of pavement technologies, based on the use of bituminous mixes (hot mix asphalt and warm mix asphalt) with recycled materials (reclaimed asphalt pavements, crumb rubber, and waste plastics), in the pursuit of assessing energy and environmental impacts. Analysis is developed based on the ISO 14040 series. Different scenarios of pavement production, construction, and maintenance are assessed and compared to a reference case involving the use of common paving materials. For all the considered scenarios, the influence of each life-cycle phase on the overall impacts is assessed to the purpose of identifying the phases and processes which produce the greatest impacts. Results show that material production involves the highest contribution (about 60–70%) in all the examined impact categories. Further, the combined use of warm mix asphalts and recycled materials in bituminous mixtures entails lower energy consumption and environmental impacts due to a reduction of virgin bitumen and aggregate consumption, which involves a decrease in the consumption of primary energy and raw materials, and reduced impacts for disposal. LCA results demonstrate that this methodology is able to help set up strategies for eco-design in the pavement sector.

WISE-Tech Design

2020 ◽  
Vol 11 (1) ◽  
pp. 39-41
Author(s):  
Avtar Judge
Keyword(s):  
Recycled Materials

In this article, a student describes his development and implementation of a 'candle recycler'; that is, a device for saving melted wax and, at the same time, generating reusable candles. His invention uses recycled materials and is intended for use by people who may not have access to electric lights and/or may not have sufficient funds to purchase candles. This invention is meant as a research-informed and negotiated action to overcome harms the student perceived in relationships among fields of science & technology and societies & environments (STSE).

RILEM TC URM: Use of recycled materials in building constructions

10.1617/13962 ◽  
2003 ◽  
Vol 36 (263) ◽  
pp. 604-608
Author(s):  
Keyword(s):  
Recycled Materials
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