Estado del conocimiento sobre mezclas asfálticas tibias. Caso de estudio periodo 2014-2023

Abstract

The current concern about the state of the environment and the increase in greenhouse gas emissions in winter has led humans to seek solutions to these problems. In the late 1990s, a new alternative to asphalt concrete mixes emerged in Germany, which seeks to combine the technical advantages offered by hot mix asphalt and the environmental characteristics of cold mix asphalt. This technology is known internationally as warm mix asphalt (WMA) (widely known worldwide by its acronym in English as WMA - Warm Mix Asphalt). The main objective of WMA is to reduce the manufacturing and compaction temperatures of a hot mix asphalt without compromising the quality, performance and durability of the resulting asphalt product. The TOPOVIAL and GIIAUD groups, Center for Studies in Sustainable Pavements and Materials of the Francisco José de Caldas District University, carried out a research project called development of a Warm Asphalt Mix under Technical and Environmental Criteria" (Call CIDC 014 of 2013), from which a state of knowledge on MAT was obtained up to 2013 (Rondón et al. 2013). Currently, the TOPOVIAL and Center for Studies in Sustainable Pavements and Materials research groups (attached to the Topographic Engineering Curricular Project) are carrying out a similar project in which natural stone aggregate will be replaced by recycled concrete aggregate (ACR) to develop a more environmentally friendly MAT. This research project is entitled “Development of a Warm Asphalt Mix (MAT) with Recycled Concrete Aggregate (ACR)” and is funded by the Universidad Distrital through the public call CIDC 01 of 2023. Within the training activities of the aforementioned call, graduate students will be linked as research assistants to support the development of the project, specifically on topics associated with the bibliographic review on MAT. The main objective of this study is to update the state of knowledge regarding MAT from 2014 to 2023. The information that will be reviewed and analyzed will come from the most important academic and scientific websites worldwide (ScienceDirect, PubMed, ASCE, IEEE Xplore, among others). With the aforementioned documents, a database will be built, which will be used to create the updated state of knowledge at the end of the ongoing research project. The results obtained from this research work will be a source of reference for academics, students and researchers in the area of ​​pavements.