DataVXRoad Materials and Pavement DesignPaper
journal article·2018-10-03

Effect of active fillers on cracking performance of bitumen-stabilised materials

Elena Romeo, Giacomo Betti, Alessandro Marradi, Gabriele Tebaldi

Road Materials and Pavement Design· Volume 19· Issue 7
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Source abstract

Abstract

A laboratory investigation was conducted to evaluate the effect of active fillers on the cracking resistance of bitumen-stabilised mixtures. Nine types of stabilised mixtures composed by 100% recycled aggregates, different blends of fillers (cement, lime and common filler) and bitumen emulsion or foamed bitumen as stabilising agents were used to build three consecutive experimental sections on a constructing road. Cores of the trial sections were tested in a laboratory according to a Superpave Indirect Tensile Test (IDT) procedure developed for quasi-brittle materials. An in-house-developed Digital Image Correlation (DIC) software code was applied. The results show the benefit of the active filler to the mixture’s cracking resistance in terms of increased tensile limits to failure. Significant damage has shown to be strongly more localised in mixtures containing active fillers. Among all the blends, the more promising blend combination consists in 1% of cement, 2% of lime and 1.5% of traditional filler.
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Research context

OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Geotechnical Engineering and Underground Structures

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Civil and Environmental Engineering and Architecture, University of Parma, Parma, Italy

Department of Civil and Industrial Engineering, University of Pisa, Pisa, Italy

Department of Civil & Coastal Engineering, E.S.S.I.E., University of Florida, Gainesville, USA

Funding

National Engineering Laboratory for Advanced Materials and Scientific Research Foundation of Graduate School of Southeast University · Wyoming Department of Transportation and Federal Highway Administration · NCHRP · Österreichische Forschungsförderungsgesellschaft · Bundesministerium für Verkehr und Digitale Infrastruktur · Mississippi Department of Transportation · US National Science Foundation · National Natural Science Foundation of China · Key Laboratory of Highway Construction & Maintenance Technology in Loess Region · Natural Science Basic Research Plan in Shaanxi Province of China · Fundamental Research Funds for the Central Universities

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