Nuclear Magnetic Resonance in Tire Waste Mortars
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, microstru...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/12/6895 |
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| author | Marta Ioana Moldoveanu Daniela Lucia Manea Elena Jumate Raluca Iștoan Radu Fechete Tudor Panfil Toader |
| author_facet | Marta Ioana Moldoveanu Daniela Lucia Manea Elena Jumate Raluca Iștoan Radu Fechete Tudor Panfil Toader |
| author_sort | Marta Ioana Moldoveanu |
| collection | DOAJ |
| description | 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 T<sub>2</sub> relaxation time distributions correlated with different pore sizes and water states: shorter T<sub>2</sub> values demonstrate strongly bound water in small pores, while longer T<sub>2</sub> 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. |
| format | Article |
| id | doaj-art-abb1c6ec08b84e708c3bb7fe8996f1a2 |
| institution | Matheson Library |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-abb1c6ec08b84e708c3bb7fe8996f1a22025-06-25T13:26:48ZengMDPI AGApplied Sciences2076-34172025-06-011512689510.3390/app15126895Nuclear Magnetic Resonance in Tire Waste MortarsMarta Ioana Moldoveanu0Daniela Lucia Manea1Elena Jumate2Raluca Iștoan3Radu Fechete4Tudor Panfil Toader5Faculty of Civil Engineering, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaFaculty of Civil Engineering, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaFaculty of Civil Engineering, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaFaculty of Civil Engineering, Technical University of Cluj-Napoca, 28 Memorandumului Street, 400114 Cluj-Napoca, RomaniaFaculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 25 George Barițiu Street, 400027 Cluj-Napoca, RomaniaNational Institute for Research and Development in Construction, Urban Planning and Sustainable Spatial Development (URBAN-INCERC), Cluj-Napoca Branch, 117 Calea Floresti, 400524 Cluj-Napoca, RomaniaThis 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 T<sub>2</sub> relaxation time distributions correlated with different pore sizes and water states: shorter T<sub>2</sub> values demonstrate strongly bound water in small pores, while longer T<sub>2</sub> 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.https://www.mdpi.com/2076-3417/15/12/6895nuclear magnetic resonancetire wastehydrationrubber granulesfree watermortar structure |
| spellingShingle | Marta Ioana Moldoveanu Daniela Lucia Manea Elena Jumate Raluca Iștoan Radu Fechete Tudor Panfil Toader Nuclear Magnetic Resonance in Tire Waste Mortars Applied Sciences nuclear magnetic resonance tire waste hydration rubber granules free water mortar structure |
| title | Nuclear Magnetic Resonance in Tire Waste Mortars |
| title_full | Nuclear Magnetic Resonance in Tire Waste Mortars |
| title_fullStr | Nuclear Magnetic Resonance in Tire Waste Mortars |
| title_full_unstemmed | Nuclear Magnetic Resonance in Tire Waste Mortars |
| title_short | Nuclear Magnetic Resonance in Tire Waste Mortars |
| title_sort | nuclear magnetic resonance in tire waste mortars |
| topic | nuclear magnetic resonance tire waste hydration rubber granules free water mortar structure |
| url | https://www.mdpi.com/2076-3417/15/12/6895 |
| work_keys_str_mv | AT martaioanamoldoveanu nuclearmagneticresonanceintirewastemortars AT danielaluciamanea nuclearmagneticresonanceintirewastemortars AT elenajumate nuclearmagneticresonanceintirewastemortars AT ralucaistoan nuclearmagneticresonanceintirewastemortars AT radufechete nuclearmagneticresonanceintirewastemortars AT tudorpanfiltoader nuclearmagneticresonanceintirewastemortars |