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Investigation of Thermal Properties of Shielding Concrete

Investigation of Thermal Properties of Shielding Concrete

Investigation of Thermal Properties of Shielding Concrete

Sep 28, 2015  Investigation of thermal properties of shielding concrete 8 specimen in saturated state was max. s = 3.07 W/(m ∙ K) (series CS -6) and in the fully dried state

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Determination of Thermal Properties of Hardening Concrete ...

experimental investigation on thermal behavior of early age concrete are presented. Concrete mixes were prepared with low-heat blended cements and various

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Investigation of structural, thermal properties and ...

Sep 01, 2017  Investigation of structural, thermal properties and shielding parameters for multicomponent borate glasses for gamma and neutron radiation shielding applications.

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Investigation of Thermal Properties of Normal Weight ...

The main aim of this study is to investigate the thermal properties of normal weight concrete for different strength classes and the performance of normal weight

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Investigation of Radiation Attenuation Properties for ...

Jun 26, 2020  aggregate in concrete for reactor shielding was to produce the workable concrete with a maximum density and adequate structural strength and to ascertain the

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Computational investigation of the neutron shielding and ...

Sep 01, 2014  Fig. 1 summarizes simulation outlines for the investigation of the neutron shielding and activation characteristics of concretes containing boron carbide and

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Determination of Thermal Properties of Hardening Concrete ...

experimental investigation on thermal behavior of early age concrete are presented. Concrete mixes were prepared with low-heat blended cements and various mineral aggregates. Special aggregates were selected for enhancing the radiation shielding capacity of concrete, including minerals of high atomic weight and of increased content of bound water.

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SHIELDING PROPERTIES OF ORDINARY CONCRETE AS A

@article{osti_4073065, title = {SHIELDING PROPERTIES OF ORDINARY CONCRETE AS A FUNCTION OF TEMPERATURE}, author = {Peterson, E G}, abstractNote = {The effect of high temperature on neutron attenuation in concrete was determined. The fast neutron attenuation was exponential and could be adequately predicted using re moval theory. The calculated removal cross

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Determination of Thermal Properties of Hardening Concrete ...

The paper presents the results of investigation of the specific heat and the thermal conductivity of shielding concrete and the specific heat of selected crushed aggregates used to produce them.

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SHIELDING PROPERTIES OF HEAVYWEIGHT, HIGH STRENGTH CONCRETE

The shielding properties of concrete may be adapted to a wide range of uses by varying its composition and density. Thermal stresses are also generated either by external sources of heat as, for example, in the case of shields for nuclear reactors, or from heat arising from the attenuation or absorption of gamma and neutron radiation within the ...

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Investigation of Radiation Attenuation Properties for ...

Jun 26, 2020  aggregate in concrete for reactor shielding was to produce the workable concrete with a maximum density and adequate structural strength and to ascertain the physical, chemical, thermal and structural properties of the concrete. The aggregate was to be free of deleterious amounts of substances, which were known to react with the alkalis in

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Investigation of thermal properties of concrete with ...

Investigation of thermal properties of concrete with recycled aggregate and concrete with copper slag and supplementary cementing materials December 2017 In book: Energy efficient, sustainable ...

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(PDF) Investigation of Thermal, Mechanical and Transport ...

Investigation of Thermal, Mechanical and Transport Properties of Ultra-Lightweight Foamed Concrete (ULFC) Strengthened with Alkali Treated Banana Fibre August 2021 DOI: 10.37934/arfmts.86.1.123139

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Investigation of gamma ray shielding efficiency and ...

The paper presents a study on the properties of New Generation Shielding Concrete (NGS-Concrete) modified by materials containing fast neutron moderators and thermal neutron absorbers.

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Properties of Concrete at Elevated Temperatures

Deformation Properties of Concrete at Elevated Temperatures. Deformation properties that include thermal expansion, creep strain, and transient strain are highly dependent on the chemical composition, the type of aggregate, and the chemical and physical reactions that occur in concrete during heating [

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Materials Special Issue : Concrete and Cement Matrix ...

Materials, an international, peer-reviewed Open Access journal. Dear Colleagues, Concrete and cement matrix composites constitute a very wide group of construction materials; therefore, the topic of this issue is narrowed down to the microstructure, permeability and thermal properties.

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Proc. Int. Symp. „Brittle Matrix Composites 11” A.M.Brandt ...

thermal properties is usually neglected or considered only during concrete hardening as in the case of heat induced deformation of massive elements. However, the thermal properties of hardened concrete are of primary importance for the performance of concrete shielding structures surrounding nuclear reactors used in nuclear power plants [1, 2].

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High-density and radiation shielding concrete - ScienceDirect

Jan 01, 2019  Ouda (2015) tested 15 concrete mixes with coarse aggregates of barite, magnetite, and goethite, and has found that water absorption of goethite aggregate was several times higher than that of barite, magnetite, and serpentine aggregates by 13%, 10%, and 6%, respectively. Concrete made with magnetite fine aggregate showed higher physicomechanical properties than that containing barite

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Computational investigation of the neutron shielding and ...

Sep 01, 2014  Fig. 1 summarizes simulation outlines for the investigation of the neutron shielding and activation characteristics of concretes containing boron carbide and polyethylene. Ingredients of the shielding concrete are cement, water, sand, gravel, boron carbide, and polyethylene. The Eu, Co, and Cs elements, which emit long-lived radioactive rays in the concrete, were then quantified via the ...

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The investigations of mechanical, thermal and rheological ...

May 01, 2020  Flexible X/Gamma ray shielding composite material of EPDM rubber with bismuth trioxide: mechanical, thermal investigations and attenuation tests Prog. Nucl. Energy , 106 ( 2018 ) , pp. 262 - 269 , 10.1016/j.pnucene.2018.03.021

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Investigation of One Concept of a Thermal Shield for the ...

bulk temperature of the concrete lamination. exceeds the maximum allowable temperature of 212'F. u b w Analysis of the proposed configuration for the wall of the reactor room was based on an investigation of the heat transfer and shielding properties of t osite wall sho n Fig. 1. Equations were devel-

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SHIELDING PROPERTIES OF DIFFERENT TYPES OF CONCRETE ...

An investigation was conducted to determine the shielding properties of ferrophosphorus concrete at temperatures up to 320 deg C for neutrons and gamma radiations. Ferrophosphorus concrete was selected because of its high density and possible use in biological-shield construction.

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SHIELDING PROPERTIES OF ORDINARY CONCRETE AS A

@article{osti_4073065, title = {SHIELDING PROPERTIES OF ORDINARY CONCRETE AS A FUNCTION OF TEMPERATURE}, author = {Peterson, E G}, abstractNote = {The effect of high temperature on neutron attenuation in concrete was determined. The fast neutron attenuation was exponential and could be adequately predicted using re moval theory. The calculated removal cross

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Properties of Concrete Subjected to Extreme Thermal ...

Mar 18, 2014  Durability, high-temperature resistance, impact and blast resilience, radiation-shielding properties, irradiation endurance and - of course - good mechanical properties are required of the cementitious composites to be used in a variety of high-performance structures. Among these, tall buildings, road and railway tunnels, off-shore platforms, gasification plants, wind and solar mills for the ...

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Investigation of structural, thermal properties and ...

Multicomponent borate glasses with the chemical composition (60 − x) B2O3–10 Bi2O3–10 Al2O3–10 ZnO–10 Li2O–(x) Dy2O3 or Tb4O7 (x = 0.5 mol%), and (60 − x − y) B2O3

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Concrete for Biological Shielding Structures

Sep 03, 2020  curing. The influence of heavyweight concrete mix design on the resistance to thermal shock exposure was revealed in [10] and allowed to verify the integrity of the shielding concrete over the di erent temperature ranges. The investigations conducted by Sakr and El-Hakim, Sakr, K., et al. [11] concerned the e ect of

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(PDF) Investigation of properties of low-strength ...

Conclusions 1180 y=1541.1x+693.32 R2=0.8233 25 Specific porosity (%) Unit Weight (kg/m3) UW 1160 The following conclusions can be drawn from this SP 30 1140 investigation which is an investigation of physical and y=-68.026x+61.72 1120 R2=0.4402 35 mechanical properties of lightweight concrete produced 1100 with diatomite as a lightweight ...

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Ceramic Radiation Shields - Stanford University

To find ideal material candidates for radiation shielding, one must consider a number of properties: heat resistance, heat diffusivity, how well the material maintains it's structure after long periods of irradiation, ability to capture high speed and thermal neutrons, gamma ray attenuation coefficients, cost, ability to mold, adhere, etc..

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Properties of Concrete at Elevated Temperatures

Deformation Properties of Concrete at Elevated Temperatures. Deformation properties that include thermal expansion, creep strain, and transient strain are highly dependent on the chemical composition, the type of aggregate, and the chemical and physical reactions that occur in concrete during heating [

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Investigation of mechanical and thermal properties of nano ...

Nov 24, 2019  Investigation of mechanical and thermal properties of nano SiO 2 /hydrophobic silica aerogel co‐doped concrete with thermal insulation properties I. Kadum Al Zaidi. Faculty of Engineering, Department of Materials Science and Engineering, Erciyes University, Kayseri, Turkey.

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Investigation of the structure and radiation shielding ...

May 21, 2021  Despite these remarkable properties, there are limited reports on the radiation shielding properties of yttrium doped glasses materials, although its atomic mass promises a higher density. Therefore, in this work Y 2 O 3 doped zinc sodium borate glasses have been prepared and the effects of Y 2 O 3 contents on the density, structural, and ...

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Some Peculiarities and Results of Investigations of ...

The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...

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Experimental Study of Selected Properties of Heavyweight ...

Heavyweight concrete is mostly used for its shielding properties in the nuclear power plants. These properties can already be influenced by the selection of the input materials. In the present study, concrete samples comprised of four-component binders based on CEM I 42.5 R, blast furnace slag, metakaolin and limestone and a mixture of barite and magnetite aggregate, were investigated.

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Preliminary Study on Design of Biological Shielding ...

The preliminary study is targeted at the design of different mixtures of biological shielding concrete for later investigation of the effects of nuclear radiation and heat on its durability. The article deals with the investigation of the properties of cement pastes prepared from two different cement types and the selection of the proper binder for biological shielding concrete.

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