Unlabelled: Geopolymers are a new environmentally friendly cementitious material, and the application of geopolymers can reduce the carbon dioxide emissions caused by the development of the cement industry.
Purpose: This study investigates the radiation shielding capacity of fly ash geopolymers (FAGP) as a viable alternative to conventionally used ordinary Portland cement (OPC) due to the high demand for an environmentally friendly, cost-effective and non-toxic shield material.
Methods: The FAGP material was fabricated and combined with Barium sulphate (BaSO) at different ratios (0, 5, 10 and 15%). Different thicknesses (3, 6 and 9 cm) of the samples were also prepared. An energy-dispersive X-ray (EDX) was used to determine the elemental percentages of the materials, which were then used to calculate their effective atomic number (Z). An ion chamber was used to detect the dose of radiation transmitted through the samples.
Results: The lowest radiation dosage (34.68 µGy) and highest Z were achieved with FAGP combined with 15% BaSO at 9 cm thickness. The decrease in radiation dosage can be attributed to the increase in Z with the addition of BaSO to FAGP, which in turn increases the density of FAGP.
Conclusions: Thus, the radiation dose can be significantly reduced with a higher ratio of BaSO to FAGP. This study shows that FAGP combined with BaSO is a promising radiation shielding material, as well as a viable alternative to OPC.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9029207 | PMC |
| http://dx.doi.org/10.3390/gels8040227 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Experimental study of different oxides in BO-ZnO-BaO glass system for gamma-ray shielding.
Sci Rep
January 2025
Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia.
Glass system of 45BO-20ZnO-30BaO-5X, (where X represents CaO, MgO, AlO, TiO, CuO and FeO) in mole percentage was investigated for gamma ray radiation shielding experimentally. Six glass composites were fabricated and the density was measured experimentally and the BZBCa glass sample has the least density with a value of 3.932 g cm and this is due to the presence of CaO in it, and the sample BZBFe has the highest density with a value of 4.
View Article and Find Full Text PDFLow-vibration cryogenic test facility for next generation of ground-based gravitational-wave observatories.
Rev Sci Instrum
January 2025
OzGrav-ANU, ARC Centre for Gravitational Astrophysics, College of Science, The Australian National University, Canberra ACT2601, Australia.
We present the design and commissioning of a cryogenic low-vibration test facility that measures displacement noise from a gram-scale silicon cantilever at the level of 10-16m/Hz at 1 kHz. This sensitivity is necessary for future tests of thermal noise models on cross sections of silicon suspension samples proposed for future gravitational-wave detectors. A volume of ∼36 l is enclosed by radiation shields cooling an optical test cavity that is suspended from a multi-stage pendulum chain providing isolation from acoustic and environmental noise.
View Article and Find Full Text PDFPb-free metal oxide-based epoxy resin nanocomposites for radiation protection: Physical evaluation analysis approach.
Heliyon
January 2025
Department of Physics, College of Science, De La Salle University, Philippines.
Exposure to mid-energy radiation poses significant health risks, necessitating the development of effective shielding materials. Traditional lead-based shields, while effective, have significant drawbacks including toxicity and environmental concerns. This study investigates the potential of lead-free epoxy resin nanocomposites, incorporating bismuth oxide, nickel oxide, and cerium oxide, for mid-energy radiation protection.
View Article and Find Full Text PDFInvestigation of the effect of thyroid collar, radiation safety glasses and lead apron on radiation dose in cone beam computed tomography.
Dentomaxillofac Radiol
January 2025
Assist. Prof. Dr, Selcuk University Faculty of Medicine, Department of Radiation Oncology, Konya, 42130, Turkiye.
Objectives: Due to the increasing use of cone-beam computed tomography (CBCT) in dentistry and considering the effects of radiation on radiosensitive organs, the aim of this study was to investigate the effect of shielding on absorbed dose of eyes, thyroid and breasts in scans conducted with different parameters using two different fields of view (FOV).
Methods: Dose measurements were calculated on a tissue-equivalent female phantom by repeating each scanning parameter three times and placing at least two thermoluminescent dosimeters (TLD) on each organ, with the averages then taken. The same CBCT scans were performed in two different FOV with shielding including thyroid collar, radiation safety glasses and lead apron and without shielding.
X-ray Responsive Antioxidant Drug-Free Hydrogel for Treatment of Radiation Skin Injury.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, P. R. China.
Radiotherapy (RT) is widely applied in tumor therapy, but inevitable side effects, especially for skin radiation injury, are still a fatal problem and life-threatening challenge for tumor patients. The main components of topical radiation protection preparations currently available on the market are antioxidants, such as SOD, which are limited by their unstable activity and short duration of action, making it difficult to achieve the effects of radiation protection and skin radiation damage treatment. Therefore, we designed a drug-free antioxidant hydrogel patch with encapsulated bioactive epidermal growth factor (EGF) for the treatment of radiation skin injury.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!