Valorization of hazardous glass wastes via geopolymer production utilized in gamma ray shielding applications: A comparative study with Portland cement

Ramadan, M.; Ramadan, Wageeh; Shwita, Fatma; El-Faramawy, Nabil

doi:10.1016/j.radphyschem.2022.110174

Cited by 34 publications

(3 citation statements)

References 53 publications

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“…Anatase phase acted as a nano-filler which precipitated on the walls of the macro-pores in a regular manner and at the same time worked as a catalyst to generate additional hydration products (CSHs, CASHs, CAHs) that also helped in narrowing the pores from 210 nm to 13.07, so the shielding power in case of D45-T5 has been elevated. Moreover, the crystallographic structure of tetragonal anatase is considered one of the most important factors that made TiO 2 NPs act as dosimetric material of super absorbent capacity against penetrable gamma rays [1,44,45].…”

Section: Radiation Shieldingmentioning

confidence: 99%

“…Radiation technology has become closely linked to progress in industry, agriculture and medicine [1]. The radioactive isotopes used in this technique are known to have unstable and high-energy nuclei that are stabilized by the emission of radiation that interacts with atoms of surrounding materials and cells of living organisms and humans, causing ecosystem disruption [2].…”

Section: Introductionmentioning

confidence: 99%

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De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

Ramadan

Kohail²,

Abadel³

et al. 2022

Case Studies in Construction Materials

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Section: Radiation Shieldingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

Ramadan

Kohail²,

Abadel³

et al. 2022

Case Studies in Construction Materials

Self Cite

View full text Add to dashboard Cite

“…A large number of studies conducted by scholars have confirmed that the addition of glass fiber can provide concrete materials with better crack resistance [14][15][16][17], impermeability [18,19], and durability [20][21][22], as well as improving compressive strength [23,24] and sustainability [15,[25][26][27]. Ramadan investigated the mechanical properties, thermal stability, and radiation mitigation capabilities of composites containing glass waste [28][29][30][31][32][33][34][35][36][37]. M. Mastali [38] conducted a large number of experiments to explore the impact of glass fiber on the mechanical properties and impact resistance of self-compacting concrete.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Mechanical Properties of Glass-Fiber-Reinforced Defective Gypsum Boards

Wu,

Jing,

Peng

et al. 2024

Sustainability

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As a waste derivative, glass fiber has drawn a lot of interest from the engineering community. The purpose of this study was to use glass fiber to improve the performance of defective gypsum boards. Single compression experiments, repeated loading experiments, and scanning electron microscopy (SEM) testing were performed on defective gypsum boards. The results showed that the addition of glass fiber can improve the compressive strength of defective gypsum boards. When the fiber concentration is 1.5%, the strength of single-hole gypsum boards increases by 77.1%. Energy evolution and residual strain evaluation after repeated loading showed the significant reinforcement of the dual-hole gypsum board samples with the addition of glass fiber, improving the stress distribution and elasticity, which was confirmed using damage factor analysis. Glass fibers reduce stress concentrations, improve integrity, and prevent brittle failure, especially at high stress levels. The microstructural analysis showed that the addition of glass fiber improves adhesion and prevents microcracking while acting as a stress transfer bridge, enhancing the behavior of the specimen under cyclic loading. Based on the experimental results and cost, 1.5% glass fiber is the optimal concentration. The research results provide new ideas for the application of glass fiber in defective and brittle materials and contribute toward the sustainable development of the construction industry.

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Production of Autoclaved Cementitious Composites Using Recycled Waste Glass

Kariem,

Frag,

El‐Sherif

et al. 2024

Environmental Quality Mgmt

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One of the major negative environmental implications of economic growth and the advancement of information technology is the large quantity of electronic waste dumped in landfills. Cathode ray tubes (CRTs) from outdated televisions and computer monitors are a significant source of electrical waste. The CRT funnel primarily consists of silica, significant alkalis (Na2O‐K2O), and heavy metals like barium‐strontium, along with a substantial lead (Pb) content that may contaminate the soil. Owing to its heavy metal content, CRT is considered hazardous waste, and regulations require its glass to be recycled or repurposed instead of landfill disposal. The low pozzolanic activity of CRT silica suggests that its high content, when paired with an optimized particle size and specific curing conditions, can enhance the mechanical properties of cement‐based products. Hydrothermal treatment has been found to speed up both the hydration of ordinary Portland cement (OPC) and the pozzolanic reactions. Since the main objective was to safely recycle large amounts of CRT, three mixes were proposed with 10%, 20%, and 30% OPC + 90%, 80%, and 70% CRT, respectively, and the effect of hydrothermal curing conditions on mechanical properties and durability of these blends was investigated. CRT‐70, a blend containing 70% CRT glass waste, showed enhanced strength due to the formation of zeolitic phases and calcium silicate hydrate (CSH). These phases also provided CRT‐70 with notable fire resistance, ensuring its structural stability under elevated temperatures. These results demonstrate the possibility of production of precast building products via high‐volume recycling of hazardous CRT waste.

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Valorization of hazardous glass wastes via geopolymer production utilized in gamma ray shielding applications: A comparative study with Portland cement

Cited by 34 publications

References 53 publications

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

A Study on the Mechanical Properties of Glass-Fiber-Reinforced Defective Gypsum Boards

Production of Autoclaved Cementitious Composites Using Recycled Waste Glass

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