Full-scale monitoring of cold mix asphalt during curing

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-02-28 DOI:10.1016/j.conbuildmat.2025.140529

Amélie Thiriet , Juliette Blanc , Mai-Lan Nguyen , Stéphane Trichet , Jean-Luc Geffard , Patrice Diez , Frédéric Delfosse , Vincent Gaudefroy

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引用次数: 0

Abstract

Cold mix asphalts (CMA) could be an answer to the need to use road materials with a lower carbon footprint. They are implemented at room temperature without drying aggregates, allowing significant energy savings for the pavement industry. However, their behavior in road pavements is still little known. This paper investigates the structural evolution and damaging of monitored test sections containing CMAs and their link to mix and binder variations with time. The behavior of the pavement was assessed in regards to the mix composition, surface layer, number of loading cycles using accelerated pavement testing and weather conditions. Full-scale experimentations showed that structures containing CMAs as base course have a very distinctive behavior in response to loading. Firstly, they undergo high strain amplitudes, compared to structures containing hot mix asphalts (HMAs), and these amplitudes increase with the number of loading cycles without apparent structural damage. It was also demonstrated that a HMA surface layer shields the CMA course. Full-scale and in-lab tests demonstrated that CMA curing (after 36 months) is not influenced by a surface layer and that the performances of CMAs can be reduced by a lower binder content. Moreover an overloaded section displayed only transverse cracking. Permanent deformation was visible on this sacrificial section, from the CMA surface to the unbound granular material course. Generally, this work also gives more insight on structural behavior of pavements containing CMAs under loading. The testing procedures and equipment suitable for structures with HMAs are not always adapted to structures with CMAs.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.