title: Concrete drill core characterization finalized to optimal dismantling and aggregates recovery.
abstract: An innovative strategy, based on micro X-ray fluorescence and HyperSpectralImaging in the short wave infrared range (1000-2500nm), was developed in order to characterize drill core samples collected from End-of-Life concrete. Micro X-ray fluorescence maps were realized to check the drill cores chemical composition, to develop the best approach for HSI analyses and to verify the correctness of the obtained HSI results. HSI analysis was carried out in order to recognize and classify aggregates and mortar paste in concrete. A morphological and morphometrical analysis of aggregates was also carried out on the prediction maps. Results showed as the proposed approach can be profitably applied to analyze and characterize demolition waste materials before dismantling. Starting from an efficient in-situ characterization of the objects to dismantle, demolition actions can be optimized in order to maximize the EOL concrete derived materials, minimizing the final waste.
authors.affiliation: Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Bonifazi
authors.affiliation: Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy.
authors.forename: Roberta
authors.initials: R
authors.lastname: Palmieri
authors.affiliation: Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy. Electronic address: silvia.serranti@uniroma1.it.
authors.forename: Silvia
authors.initials: S
authors.lastname: Serranti
mesh_terms: D003252:Construction Materials / Q000032:analysis*; D007220:Industrial Waste / Q000032:analysis*; D059027:Recycling / Q000379:methods*; D013052:Spectrometry, X-Ray Emission; D018505:Waste Management / Q000379:methods*
chemical_list: D007220:Industrial Waste
keywords: Demolition waste; End-of-life concrete; Hyperspectral imaging; Micro X-ray fluorescence; Recycling