Nuclear Magnetic Resonance in Tire Waste Mortars
Source abstract
Abstract
This study aims to investigate the application of nuclear magnetic resonance (NMR) to characterize mortars containing recycled rubber waste as an eco-innovative material for sustainable construction. The primary objective was to analyze the way rubber granules influence hydration kinetics, microstructural development and pore structure. The innovative mortar formulations incorporated rubber granules, casein, natural hydraulic lime (NHL), and latex. NMR analysis revealed distinct T2 relaxation time distributions correlated with different pore sizes and water states: shorter T2 values demonstrate strongly bound water in small pores, while longer T2 values are associated with loosely bound or free water in larger pores. The formulation with 3.5% NHL and 5% rubber granules exhibited optimal microstructural characteristics. These results reveal that NMR is a valuable, non-destructive tool for monitoring cementitious material evolution and supporting the use of tire-derived waste in eco-innovative mortar designs.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Natural Fiber Reinforced Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Civil Engineering, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, Romania
Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 25 George Barițiu Street, 400027 Cluj-Napoca, Romania
National Institute for Research and Development in Construction, Urban Planning and Sustainable Spatial Development (URBAN-INCERC), Cluj-Napoca Branch, 117 Calea Floresti, 400524 Cluj-Napoca, Romania
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