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A New Performance-Based Test for Assessing Chloride-Induced Reinforcement Corrosion Resistance of Geopolymer Mortars.
Materials (Basel)
October 2024
School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Sydney 2007, Australia.
Article Synopsis
- Geopolymer concretes are being adopted slowly in the industry due to concerns about their long-term durability, particularly regarding the corrosion of reinforcement from chloride exposure.
- The corrosion process in concrete has two stages: the initiation phase (time for chlorides to reach reinforcement) and the propagation phase (active corrosion), but current tests mostly focus only on the initiation phase.
- A new performance-based test is proposed that evaluates both phases of corrosion in alkali-activated concretes without using electrical potential and can be completed fairly quickly.*
Unlocking the potential of environmentally friendly adsorbent derived from industrial wastes: A review.
Chemosphere
November 2024
Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103, Tamil Nadu, India. Electronic address:
With increasing urbanization and industrialization, growing amounts of industrial waste, such as red mud (RM), fly ash (FA), blast furnace slag (BFS), steel slag (SS), and sludge, are being produced, exposing substantial threats to the environment and human health. Given that numerous researchers associate with conventional adsorbents, developing and utilizing industrial wastes derived from adsorption technology still has received limited attention. Utilizing this waste contributes to developing alternative materials with superior performance and significantly reduces the volume of solid waste.
View Article and Find Full Text PDFSustainable quaternary binders made from metallurgical wastes of northeast Mexico: strength, hydration products, and durability.
Environ Sci Pollut Res Int
October 2024
Facultad de Ingeniería, Universidad Autónoma de Coahuila - UAdeC, Blvd. Fundadores km 13, Ciudad Universitaria, Arteaga, 25350, México.
In this research, four industrial wastes were used for up to 80% as supplementary cementitious materials (SCMs) in cement mortar systems: ground granulated blast furnace slag, electric arc furnace slag, basic oxygen furnace slag, and waste limestone powder. Quaternary cementitious blends were prepared and studied for up to 120 days. Workability, compressive strength, durability, microstructures, and sustainability studies were performed and compared with Portland cement references.
View Article and Find Full Text PDFRegeneration of Antifog Performance of Laser-Induced Copper-Based Micro-Nano Structured Surfaces by Rapid Thermal Treatment.
Nanomaterials (Basel)
August 2024
School of Mechanical Engineering, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China.
In this investigation, the laser marker ablation technique was employed on Cu-coated glass to fabricate micro-nanostructured antifog glass. The resulting surfaces exhibited a quasi-periodic micron hillock-hollow structure with dispersed nanoparticles distributed throughout, which played a role in the antifog property and superhydrophilicity. However, airborne organic pollutant deposition degraded the superhydrophilicity of ablated glass surfaces and, therefore, their antifog performance, which cannot be circumvented.
View Article and Find Full Text PDFA reliable method to prepare milligram size environmental samples to quantify metal(loid)s by high-resolution graphite furnace atomic absorption spectrometry.
MethodsX
December 2024
Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Avenida Itália km 8, Campus Carreiros, 96.203-900, Rio Grande, RS, Brazil.
We searched for an extraction method that would allow a precise quantification of metal(loid)s in milligram-size samples using high-resolution graphite furnace atomic absorption spectrometry (HR-GFAAS). We digested biological (DORM-4, DOLT-5 and TORT-3) and sediment (MESS-4) certified reference materials (CRMs) using nitric acid in a drying oven, aqua regia in a drying oven, or nitric acid in a microwave. In addition, we digested MESS-4 using a mixture of nitric and hydrofluoric acids in a drying oven.
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