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The transition to a circular economy requires new materials and products with new production designs, technologies, and processes. In order to create new materials with physico-chemical qualities suitable for application in the building materials engineering sector, stone dust and polymer waste-two environmentally hazardous industrial wastes-were combined in this study. The materials obtained were evaluated based on an analysis performed using the Micro-Deval test. The results obtained showed a Micro-Deval coefficient value of 7.7%, indicating that these artificial aggregates can replace the natural aggregates used in road construction. Additionally, it was shown that the stone dust used could be applied as a sorbent for dyes without later leaching this dye from the final synthetic stones. Another category of materials that meets the principles of the circular economy and was developed in this study is bituminous mastic, which is currently used for the hot sealing of joints in road infrastructure. For this purpose, a composite material was developed using stone dust and cooking oil to replace the filler, a non-regenerable source used for obtaining bituminous mixtures. Specific standard methods were used to assess the degree to which the new materials approach the behavior of commercially available products.
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http://dx.doi.org/10.3390/ma17236002 | DOI Listing |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11643777 | PMC |
Materials (Basel)
December 2024
National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Str., 400293 Cluj-Napoca, Romania.
The transition to a circular economy requires new materials and products with new production designs, technologies, and processes. In order to create new materials with physico-chemical qualities suitable for application in the building materials engineering sector, stone dust and polymer waste-two environmentally hazardous industrial wastes-were combined in this study. The materials obtained were evaluated based on an analysis performed using the Micro-Deval test.
View Article and Find Full Text PDFLasers Med Sci
December 2024
Groupe de Recherche Clinique sur la Lithiase Urinaire, GRC n°20, Hôpital Tenon, Sorbonne Université, Paris, 75020, France.
To compare the pulsed-Thulium: YAG(p-Tm: YAG) and Thulium Fiber(TFL) lasers in terms of efficiency and safety profiles during flexible ureteroscopy(fURS) and endocorporeal laser lithotripsy(ELL). A prospective single-center open-label comparative study included consecutive patients with ureteral and renal stones who underwent fURS using Thulio(p-Tm: YAG, Dornier©,Germany) or TFL Drive(TFL, Coloplast©,Danemark), with 270 μm and 150/200μm laser fibers(LF), respectively. fURS were performed by a single operator in each group.
View Article and Find Full Text PDFHeliyon
November 2024
Department of Respiratory and Critical Care Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, No.301, Nancheng Avenue, Nanan District, Chongqing, 400060, PR China.
Pulmonary alveolar proteinosis (PAP) is characterized by the accumulation of surfactant material in alveoli. Few aPAP cases with a history of dust inhalation show both paves stone-like changes and micronodules in the chest CT scan. We present a 52-year-old male patient withsilicosis complicated with aPAP due to long-term dust inhalation during the construction of bridge piers columns.
View Article and Find Full Text PDFAnn Work Expo Health
November 2024
School of Public Health and Preventive Medicine, Monash University, 553 St Kilda Road, Melbourne, Victoria, 3004, Australia.
Objectives: Workers in the stone benchtop industry in Australia are at high risk of silicosis due to exposure to respirable crystalline silica (RCS) from the dry processing of artificial stone. In Victoria, Australia, a multifaceted response including education, regulatory changes, inspection site visits, and occupational health screening programme began in 2019. We aimed to review the success of this approach to safety practices in the industry.
View Article and Find Full Text PDFJ Occup Environ Hyg
November 2024
Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, Chicago, Illinois.
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