Review on the addition of boron compounds to radiation shielding concrete

Kharita, M.H.; Yousef, S.; Alnassar, Mohammad Saleh N

doi:10.1016/j.pnucene.2010.09.012

Cited by 163 publications

(55 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The attenuation coefficient of gamma rays was determined by measuring the fractional radiation intensity N x passing through the thickness x as compared to the source intensity N o . The linear attenuation coefficient (l) has been obtained from the solution of the exponential BeerLambert's law [13]. The effect of replacing sand by iron slag…”

Section: Testing Methods and Proceduresmentioning

confidence: 99%

The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

Ouda

Abdel‐Gawwad

2017

HBRC Journal

View full text Add to dashboard Cite

In the present study, the effects of replacing sand by high percentages of basic-oxygen furnace slag on the compressive strength, bulk density and gamma ray radiation shielding properties of mortar have been investigated. Cement mortar of mix proportion 1:3 including various percentages of iron slag was designed. The percentages of replacement were 0%, 40%, 80% and 100% by weight of fine aggregate. Mortar mixes were prepared with water cement ratio of 0.44 and cured in potable water for 90 days. The attenuation measurements were performed using gamma spectrometer of NaI (Tl) detector. The utilized radiation sources comprised 137 Cs and 60 Co radioactive elements with photon energies of 0.662 MeV for 137 Cs and two energy levels of 1.17 and 1.33 MeV for the 60 Co. Likewise, half value layer (HVL), tenth value layer (TVL) and the mean free path (mfp) for the tested samples were measured. Results of this investigation indicated that the strength properties of mortars increased significantly upon replacing sand partially by iron slag. It was also observed that the inclusion of iron slag as partial replacement with fine aggregate enhances the bulk density of mortar. On the other hand, full sand replacement by iron slag has significant effects on shielding efficiency in thick shields, as it reduces the capture gamma rays better than normal mortar incorporating sand. ª 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of Housing and Building National Research Center. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).

show abstract

Section: Testing Methods and Proceduresmentioning

confidence: 99%

The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

Ouda

Abdel‐Gawwad

2017

HBRC Journal

View full text Add to dashboard Cite

show abstract

“…Radioactive wastes of nuclear power plants are mixed with high-concentration borate solutions (as a constituent material of neutron shields, because of its high absorption of neutrons) and then these mixtures are solidified by using cement, to be stored underground [7]. The improvements and additional features provided by boron compounds to concrete and other cementitious composites are closely related to B 2 O 3 concentrations of used boron compounds [8,9].…”

Section: Introductionmentioning

confidence: 99%

Determination of Radiation Shielding of Concrete Produced from Portland Cement with Boron Additives

et al. 2017

View full text Add to dashboard Cite

Concrete is a material which is widely used for neutron shielding in such building constructions as nuclear power stations, particle accelerators and medical hospitals. Concrete is very significant for neutron shielding, because is contains some elements which help to moderate very penetrative fast neutrons. Boron increases the neutron shielding effectiveness of concretes. Boron can be added to concrete in different ways, by addition of boron to the water, used in concrete, or by addition of boron containing natural minerals. In this study, three samples of concrete were produced using B2O3 additives material, boron-modified active belite and Portland cement. Neutron absorption coefficients of the produced three different types of concrete samples were obtained through experiments. It is concluded that the addition of boron to concrete is an alternative option to be used for the purposes of neutron shielding.

show abstract

“…Different concrete mixes will have different attenuation characteristics [2]. The flexibility and low price of concrete are the main reasons for the selection of concrete as radiation shielding material for reactor nuclear [3]. This concrete protect the surrounding outside environment from the high level radiations emitted from the reactor and supporting the reactor.…”

Section: Introductionmentioning

confidence: 99%

“…El-Khayatt [1] and Yilmaz et al [5] studied that the elemental composition, hydrogen content and the concrete density play an important role for neutrons and gamma-rays attenuation. Material with high absorption cross-section like boron and cadmium can be used to capture the slow or thermal neutron [3].…”

Section: Introductionmentioning

confidence: 99%

Preliminary study of neutron absorption by concrete with boron carbide addition

Abdullah

Ariffin

Hamid

et al. 2014

AIP Conference Proceedings

View full text Add to dashboard Cite

New shielding material development for compact accelerator-driven neutron source AIP Advances 7, 045213 (2017) . Concrete has become a conventional material in construction of nuclear reactor due to its properties like safety and low cost. Boron carbide was added as additives in the concrete construction as it has a good neutron absorption property. The sample preparation for concrete was produced with different weight percent of boron carbide powder content. The neutron absorption rate of these samples was determined by using a fast neutron source of Americium-241/Be (Am-Be 241) and detection with a portable backscattering neutron detector. Concrete with 20 wt % of boron carbide shows the lowest count of neutron transmitted and this indicates the most neutrons have been absorbed by the concrete. Higher boron carbide content may affect the concrete strength and other properties.

show abstract

Review on the addition of boron compounds to radiation shielding concrete

Cited by 163 publications

References 4 publications

The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

Determination of Radiation Shielding of Concrete Produced from Portland Cement with Boron Additives

Preliminary study of neutron absorption by concrete with boron carbide addition

Contact Info

Product

Resources

About