混凝土与废玻璃填充剂的马射线相互作用研究
Ashwitha Chikkegowda1, Lingaraj Adarsh Raj1, Sankarshan Belur Mohan2
1Department of Studies in Physics, University of Mysore, Manasagangothri, Mysuru 570006, India.
Radiation protection dosimetry
|July 17, 2024
概括
这项研究表明,将废玻璃作为混凝土中的填充物增加了混凝土的马射线屏蔽能力. 较高的玻璃度显著改善了材料的质量.
科学领域:
- 材料科学 材料科学 材料科学
- 核工程 核工程是指核工程.
- 环境科学 环境科学
背景情况:
- 混凝土是一种广泛使用的建筑材料.
- 在核设施和医疗应用中,有效的马射线屏蔽至关重要.
- 开发可持续且具有成本效益的屏蔽材料是一个持续的挑战.
研究的目的:
- 研究废玻璃作为混凝土中的填充材料的有效性,用于马射线屏蔽.
- 量化玻璃混凝土复合材料在各种马射线能量下的屏蔽性能.
- 将实验结果与理论计算进行比较.
主要方法:
- 用废玻璃填充剂度为0%,15%,30%,45%,60%的混凝土混合物进行了制备.
- 马射线衰减测量使用马光谱仪与NaI(Tl) 探测器在511,662,1173和1332 keV进行了测量.
- 确定每个样本的质量衰减系数 (μ/ρ),并与来自EDAX数据的理论值进行比较.
主要成果:
- 玻璃混凝土复合材料的质量衰减系数 (μ/ρ) 随着废玻璃填充剂度的增加而增加.
- 实验确定的 (μ/ρ) 值与理论计算有很好的一致性.
- 在测试的马射线能量中,屏蔽性能各不相同,在较低的能量下观察到更高的衰减.
结论:
- 废玻璃可以有效地用作填充材料,以增强混凝土的马射线屏蔽性能.
- 开发的玻璃混凝土复合材料为减少玛辐射强度提供了一个有希望的可持续解决方案.
- 这项研究有助于开发环保和高效的辐射屏蔽材料.
相关概念视频
01:29Additives and Fillers in Concrete
93
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
93
01:22Fiber Reinforced Concrete
73
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
73
01:23Abrasion Resistance of Concrete
125
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
125
01:22Effect of Sea Water on Concrete
210
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
210
01:27Shrinkage in Concrete
90
Shrinkage in concrete is primarily due to water loss from evaporation, hydration of cement, or carbonation, leading to a reduction in volume. The volumetric contraction results in volumetric strain in concrete. However, in practice, shrinkage is measured as linear strain, which is one-third of the volumetric strain.
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
90
01:28Effects of Air-entrainment in Concrete
82
Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
82