Investigating the effects of granite, marble, granodiorite, and ceramic waste powders on the physical, mechanical, and radiation shielding performance of sustainable concrete

Annals of Nuclear Energy, Journal Year: 2025, Volume and Issue: 216, P. 111274 - 111274

Published: Feb. 21, 2025

Language: Английский

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Nuclear radiation attenuation properties of PbO-doped polymeric composites

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(8)

Published: March 1, 2025

Abstract The current study is subjected to examine six synthesized polymeric samples (SPS); XPbO:(45-X)B 2 O 3 –05ZnO–50C H Cl ; (where x = 10–35 wt.%, step size of 5%) towards radiation attenuation as a comparative study. investigated were characterized using XRD, FTIR, and SEM. performance was assessed the Monte Carlo simulation code (MC) validated PhyX software. amount PbO in SPS addressed through shielding by various parameters (e.g., linear coefficients ( µ ), etc.) photon energy from 0.015 15 MeV. In addition, Fast Neutrons Removal Cross Sections (FNRCS) determined. values varied (29.8451 0.0372), (39.0225 0.0422), (50.8618 0.0477), (67.3618 0.0583), (72.3134 0.0581), (85.6818 0.0647) cm −1 for [10PbO:35B ], [15PbO:30B [20PbO:25B [25PbO:20B [30PbO:15B [35PbO:10B respectively at photon-energy up sample ] has highest because content (35%) high density. FNRCS ranged 00.77 00.88 . value FNRCS. findings indicated significant γ -rays neutrons potential materials doped with showed that they should be used radiological protection.

Language: Английский

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A Review on the Behavior of Ultra-High-Performance Concrete (UHPC) Under Long-Term Loads

Buildings, Journal Year: 2025, Volume and Issue: 15(4), P. 571 - 571

Published: Feb. 13, 2025

This paper provides a research review regarding the creep of ultra-high-performance concrete with or without addition fibers. Unlike other similar studies that mainly considered influential factors and their effects on behavior, this focuses more attention analysis UHPC models. For strain assessments these concretes, models given in latest standards cannot be used, but it is necessary to modify them give reliable results, rather complex composition UHPC. Several proposed for are presented comparative analysis. The observation by varying key parameters such as compressive strength, relative humidity, cross-sectional dimensions, temperature, there may major discrepancies between models, so additional experimental investigations perform calibration. In paper, α1, α2, γ FIB Model Code 2010 have been modified order obtain match terms final value coefficient curve. decreases when steel fiber content increases, important consider excessive because very often causes an increase strain. application thermal treatment at temperature 90 °C 48 h significantly improves time-dependent properties An impact content, type, treatment, age under load strains specimens beams long-term loads performed.

Language: Английский

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Elevated temperature effects on the compressive strength and radiation shielding capability of waste granite and marble concrete

The European Physical Journal Plus, Journal Year: 2025, Volume and Issue: 140(4)

Published: April 14, 2025

Language: Английский

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Valorization of nano additives effects on the physical, mechanical and radiation shielding properties of high strength concrete

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 25, 2025

This study evaluated the impact of nano silica (NS) and metakaolin (NMK) on high-strength concrete (HSC). Portland cement was partially replaced with varying amounts NS NMK, both individually in combination. percentages (1, 2, 3, 4 wt%) (2, 6 NMK individual mixes. Four mixtures were formulated using a combination NMK. The physical properties (slump, consistency, setting times), mechanical (compressive tensile strengths at 28 days), microstructural analysis (X-ray diffraction (XRD) energy-dispersive X-ray (EDX)) conducted combined mixtures, along control mix. Radiation shielding conducted. Monte Carlo simulation code Phy-X program used to examine efficacy these combinations against ionizing radiation, e.g., gamma rays fast neutrons. results showed reduced slump HSC, primarily due increased water demand denser structure. Combined use led more significant reduction than individual. Increased content higher but shorter times. improved compressive strengths, reaching maximum 10.5% 5.6%, respectively, replacement 3% NS. 11.7% 6.3%, respectively 4% mixture 1% + mixture, demonstrated enhancement by 14.2% 7.7%, compared XRD EDX analyses confirmed that enhanced formation calcium silicate hydrate aluminate through pozzolanic reactions. linear attenuation samples NMK4 < CM2 NS3 C0. sample containing best value for coefficient rise FCS, indicating it is an excellent barrier These findings demonstrate significantly enhance HSC strength radiation shielding, offering safer durable nuclear medical facilities.

Language: Английский

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Influence of nano-silica on the behaviour of high-performance concrete – multiscale investigation on its mechanical, durability and microstructural properties

Multiscale and Multidisciplinary Modeling Experiments and Design, Journal Year: 2025, Volume and Issue: 8(6)

Published: April 27, 2025

Language: Английский

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