Ionizing radiation shielding effectiveness of decorative building materials (porcelain and ceramic tiles) used in Bangladeshi dwellings

The construction of radiation shielding buildings still developed. Application of ionizing radiations became necessary for different reasons, like electricity generation, industry, medical (therapy treatment), agriculture, and scientific research. Different countries all over the world moving toward energy saving, besides growing the demand for using radiation in several aspects. Nuclear power plants, healthcare buildings, industrial buildings, and aerospace are the main neutrons and gamma shielding buildings. Special design and building materials are required to enhance safety and reduce the risk of radiation emission. Radiation shielding, strength, fire resistance, and durability are the most important properties, cost-effective and environmentally friendly are coming next. Heavy-weight concrete (HWC) is used widely in neutron shielding materials due to its cost-effectiveness and worthy physical and mechanical properties. This paper aims to give an overview of nuclear buildings, their application, and behaviour under different radiations. Also to review the heavy-weight concrete and heavy aggregate and their important role in developing the neutrons shielding materials. Conclusions showed there are still some gaps in improving the heavy-weight concrete (HWC) properties.

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Effect of Flyash- Rice Husk Ash Blend in the Energy Efficient Geopolymer Tiles Using Industrial Wastes

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1048.403 ◽

2022 ◽

Vol 1048 ◽

pp. 403-411

Author(s):

A. Chithambar Ganesh ◽

K. Mukilan ◽

B.P.V. Srikar ◽

L.V.S. Teja ◽

K.S.V. Prasad ◽

...

Keyword(s):

Rice Husk ◽

Energy Efficient ◽

Building Materials ◽

Rice Husk Ash ◽

Research Work ◽

Industrial Wastes ◽

Modulus Of Rupture ◽

Ceramic Tiles ◽

Heat Curing ◽

Intensive Approach

Infrastructural developments are inevitable for the developing countries and hence the production of sustainable building materials is promoted worldwide. Sustainable development in the vicinity of tiles is bewildered for more than a decade. Production of conventional tiles such as cement concrete tiles, clay tiles and ceramic tiles is energy intensive approach and levies lot of strain over the adjunct ecosystem. On the other hand there are serious problems related to the disposal of flyash, Rice Husk Ash throughout the world. An approach has been taken to synthesis tiles based on these industrial byproducts as the base materials through Geopolymer technology. In this work, Geopolymer mortar after heat curing is applied as tiles. In this work, Flyash is replaced by Rice Husk Ash in various proportions such as 20, 40, 60, 80 and 100 percent. Tests such as workability, flatness, straightness, perpendicularity, water absorption, modulus of rupture and abrasion are conducted and fair results are obtained. This research also portrays the effect of Rise Husk Ash addition over the flyash based Geopolymer binder in the utility as tiles. The findings of this research work encourages the development of energy efficient tiles using industrial wastes. Keywords: Geopolymer, Rice Husk Ash, Tiles

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Sulphur Dioxide Emissions during the Firing of Ceramic Bodies Based on Class C Fly Ash

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.296.149 ◽

2019 ◽

Vol 296 ◽

pp. 149-154

Author(s):

Radomír Sokolář ◽

Martin Nguyen

Keyword(s):

Fly Ash ◽

Sulphur Dioxide ◽

Power Plants ◽

Building Materials ◽

Porous Ceramic ◽

Mineralogical Composition ◽

High Volume ◽

Ceramic Tiles ◽

Sulphur Dioxide Emissions ◽

Class C

Fluid fuel combustion technology in coal-fired power plants is very popular in the Czech Republic, resulting in a relatively high production of a specific by-product - fluidized fly ash (class C according to ASTM definition), which differs from the classical high-temperature fly ash in mineralogical composition with a high sulphur content of anhydrite CaSO4. Fluidized ash is not yet used in the production of fired building materials, where it could be used as a source of calcium oxide (for example, the production of porous ceramic tiles). However, high volume of sulphur dioxide emissions during the re-firing of fluidized fly ash in ceramic raw materials mixtures has been solved. The aim of the paper is definition of temperature ranges of anhydrite decomposition (formation of SO2 emission) from pure class C (fluidized) fly ashes from different sources (power plants) depending on granulometry of fly ash especially.

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“Cement-Free Product” for Settlement of Ceramic Tiles: An Approach for Greener Construction

Materials Science Forum ◽

10.4028/www.scientific.net/msf.805.403 ◽

2014 ◽

Vol 805 ◽

pp. 403-408

Author(s):

Otávio Luiz do Nascimento ◽

Alexandra Ancelmo Piscitelli Mansur ◽

Herman Sander Mansur

Keyword(s):

Carbon Dioxide ◽

Construction Industry ◽

Free Product ◽

Ceramic Tile ◽

Carbon Dioxide Emissions ◽

Building Materials ◽

Global Climate ◽

Public Awareness ◽

Ceramic Tiles ◽

The Impact

Increased public awareness of the threats posed by global warming has led to greater concern over the impact of anthropogenic carbon emissions on the global climate associated with the level of carbon dioxide (CO2) in the atmosphere. Hence, without radical market, technological, and cultural changes, the CO2 concentrations are expected to rise to unbearable levels within just few decades ahead. The production of cement is estimated to be responsible for approximately 5% of the global carbon dioxide emissions. Consequently, aiming for creating a more sustainable world, engineers and scientists must develop and put into use greener building materials that may revolutionize the entire construction industry. This study presents an innovative product for settlement of ceramic tiles as a potential alternative for replacing the conventional cement based mortar in some specific building applications. Essentially, the novel system is based on a double face polymer-adhesive sheet (“cement-free product”). Thus, the main goal was to evaluate the performance and estimate the durability of the developed system. Pull-off tests were conducted in order to compare this new system to the traditional one, with polymer modified mortar, under different procedures and conditions of cure. In addition, both systems were modeled using Finite Element Method (FEM) to obtain the stresses at the interface between ceramic-tile and adhesive. Based on the results, the recommended limits of bond strength for the innovative “cement-free product” of ceramic tile installation could be lower than those specifications used for the equivalent mortar systems. Therefore, these results give some preliminary evidence that by using the new “cement-free” product for ceramic-tile installation may lead to some increase in the productivity and, more important, in the sustainability of a relevant sector of the construction industry.

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Novel Processing of Structural Epoxy for Shielding and Structural Applications

Volume 13: Processing and Engineering Applications of Novel Materials ◽

10.1115/imece2007-42867 ◽

2007 ◽

Author(s):

M. S. Al-Haik ◽

S. Trinkle ◽

O. Momotyuk ◽

B. T. Roeder ◽

K. Kemper ◽

...

Keyword(s):

Magnetic Field ◽

High Energy ◽

Radiation Shielding ◽

Shielding Effectiveness ◽

Optimal Processing ◽

Future Space ◽

Structural Applications ◽

Material Texture ◽

Novel Processing ◽

Micro Structures

In this study we investigate the shielding effectiveness of a structural epoxy against high energy protons. To study the influence of material texture on its radiation shielding effectiveness we induced orientations in the epoxy using a high magnetic field of 15 T, and exposed it to proton beams of energy 6 MeV-15 MeV. The micro structures of the samples were characterized using ESEM microscopy. The effect of the radiation on the mechanical properties of the samples was measured using nanoindentation tests. The findings of this study can lead to an optimal processing path for multifunctional epoxy that can be utilized as structural and shielding component in future space missions.

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