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Assessment of natural radioactivity in cements used as ...

2016-10-17  Cement manufacture may cause environmental contamination at all stages of the production process [ 2 ]. The cement as the building material contains various amounts of natural occurring radionuclides of uranium (238 U), thorium (232 Th) and their decay products and the radioactive isotope of potassium (40 K).

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Assessment of natural radioactivity in cements used as ...

Assessment of natural radioactivity in cements used as building materials in Turkey B. E. O¨zdis¸1 • N. F. C¸am1 • B. Canbaz O¨ztu¨rk1 Received: 18 May 2016/Published online: 17 October 2016

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Assessment of radioactivity and trace elements of cement ...

2017-4-3  To assess the external radiation hazard due to radioactivity in cement, the external hazard index (H ex) is calculated according to the equation (Beretka and Mathew 1985): H_ {\text {ex}} = \left ({C_ {\text {Ra}} /370} \right) + \left ({C_ {\text {Th}} /259} \right) + \left ({C_ {\text {K}} /4810} \right)

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Assessment of Natural Radioactivity Levels of Cements and ...

The cement samples of 8 types of cements from Slovak cement plants and five types of composites made from cement type CEM I were analyzed in the experiment. The radionuclide activities in the cements ranged from 8.58–19.1 Bqkg−1, 9.78–26.3 Bqkg−1 and 156.5–489.4 Bqkg−1 for 226Ra, 232Th and 40K, respectively.

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Natural radioactivity and human exposure by raw materials ...

2010-9-1  During the manufacturing process in the cement industry, raw materials of different levels of natural radioactivity are utilized. In this study we present the radiological impact of cements as a building material and the different raw materials used in their manufacture.

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(PDF) Radioactivity concentration and dose assessment of ...

Radioactivity concentration and dose assessment of soil samples in cement factory and environs in ogun state, nigeria August 2018 International Journal of Civil Engineering and Technology 9(9 ...

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(PDF) ASSESSMENT OF NATURAL RADIOACTIVITY LEVELS

Mimoza M. Ristova. During the manufacturing process in the cement industry, raw materials of different levels of natural radioactivity are utilized. In this study we present the radiological ...

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Natural radioactivity assessment of a phosphate fertilizer ...

2014-1-1  Natural radioactivity assessment of a phosphate fertilizer plant area. ... which currently accounts for over 90% of phosphoric acid production. The wet process is economic but generates a large amount of phosphogypsum ... Influence of Portland cement type on unconfined compressive strength and linear expansion of cement stabilized phosphogypsum.

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EVALUATION OF THE ENVIRONMENTAL RADIOACTIVITY

In the measurement of environmental radioactivity around Dangote cement, inadequate supply and lack of useful materials in the site/field can hinder the progress of this work. 1.6 DESCRIPTION OF THE STUDY AREA. The study area is located in Tse-kucha quarry of Dangote Cement Company limited Gboko in Benue state of Nigeria.

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Risk Assessment in Cement Manufacturing Process

2019-7-1  Risk Assessment in Cement Manufacturing Process Manish Kumar1, 1 ME Scholar , Dept. of Mechanical Engg., Bhilai Institute of Technology,Raipur, CG, India Manish Kumar Mishra2 2 Assistant professor, Dept. of Mechanical Engg.,

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Assessment of Natural Radioactivity Levels of Cements and ...

The cement samples of 8 types of cements from Slovak cement plants and five types of composites made from cement type CEM I were analyzed in the experiment. The radionuclide activities in the cements ranged from 8.58–19.1 Bqkg−1, 9.78–26.3 Bqkg−1 and 156.5–489.4 Bqkg−1 for 226Ra, 232Th and 40K, respectively.

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Assessment of radioactivity and trace elements of cement ...

2017-4-3  The radioactivity of naturally occurring radionuclides 226Ra, 232Th, and 40K was determined in thirteen cement samples collected from different manufactures of Dhaka city.

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Assessment of Natural Radioactivity Levels of Cements and ...

1. Introduction. The assessment of population exposures due to indoor radiation is very important and therefore knowledge of the concentrations of natural radionuclides in construction materials is required [].Construction materials are derived from both natural sources (e.g., rock and soil) and waste products (e.g., phosphogypsum, alum shale, coal fly ash, oil shale ash, some rare minerals ...

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ASSESSMENT OF NATURAL RADIOACTIVITY LEVELS AND

2021-7-5  In the construction industry, there are previous studies on the use of shell waste instead of limestone in cement production (17, 18) as it requires less energy during the grinding and crushing processes . Fly ashes (OR), through combustion of residual biomass, were obtained in the olive oil extraction process in a Spanish power plant.

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Assessment natural radioactivity of marl as raw material ...

This Research involves radiological study to assess the marl layer in the Euphrates Formation (Early Miocene) as a raw material for Portland cement industry. Nine wells are drille

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ASSESSMENT OF NATURAL RADIOACTIVITY IN THE

2020-7-21  assessment of natural radioactivity in the soils of the ohorongo cement plant and the town of otavi, namibia a mini thesis submitted in partial fulfilment of the requirements for the degree of master of science in nuclear science of the univesity of namibia by monica mwadinomo nambinga 200970941 april, 2020

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EVALUATION OF THE ENVIRONMENTAL RADIOACTIVITY

In the measurement of environmental radioactivity around Dangote cement, inadequate supply and lack of useful materials in the site/field can hinder the progress of this work. 1.6 DESCRIPTION OF THE STUDY AREA. The study area is located in Tse-kucha quarry of Dangote Cement Company limited Gboko in Benue state of

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Risk Assessment in Cement Manufacturing Process – IJERT

2019-12-4  In cement manufacturing process raising etc. quality of product, the cost should be minimize, improving delivery of product, reducing wastages. Implementation of cement industry day by day to increase the productivity beneficial for our future. New technique be developed to proper control cement manufacturing process. To proper continuous ...

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Environmental assessment of different cement

2016-9-1  To assess which manufacturing process is more sustainable at the lowest level of CO 2 emissions, the environmental impact of four different cement manufacturing scenarios was considered: business as usual BAU, Scenario 1 – energy efficient kiln process, Scenario 2–30% of thermal energy produced by alternative fuel, and Scenario 3 – energy ...

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Natural radioactivity assessment of a phosphate fertilizer ...

2020-4-9  Natural radioactivity assessment of a phosphate fertilizer plant area S.K. Sahu, P.Y. Ajmal, R.C. Bhangare, M. Tiwari, G.G. Pandit* Environmental Monitoring and Assessment Section, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India article info Article history: Received 17 October 2013 Received in revised form 1 January 2014 Accepted ...

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Natural radioactivity and human exposure by raw materials ...

2010-9-1  During the manufacturing process in the cement industry, raw materials of different levels of natural radioactivity are utilized. In this study we present the radiological impact of cements as a building material and the different raw materials used in their manufacture.

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Assessment of Natural Radioactivity Levels of Cements and ...

1. Introduction. The assessment of population exposures due to indoor radiation is very important and therefore knowledge of the concentrations of natural radionuclides in construction materials is required [].Construction materials are derived from both natural sources (e.g., rock and soil) and waste products (e.g., phosphogypsum, alum shale, coal fly ash, oil shale ash, some rare minerals ...

Get Price

ASSESSMENT OF NATURAL RADIOACTIVITY LEVELS AND

2021-7-5  In the construction industry, there are previous studies on the use of shell waste instead of limestone in cement production (17, 18) as it requires less energy during the grinding and crushing processes . Fly ashes (OR), through combustion of residual biomass, were obtained in the olive oil extraction process in a Spanish power plant.

Get Price

A study of the natural radioactivity and radon exhalation ...

2016-1-1  The presence of natural radioactivity and radon exhalation from building materials contribute to the radiation dose received by human. So, it is essential to evaluate the activity levels of the primordial radionuclides (238 U, 226 Ra, 232 Th and 40 K) present in the building materials for the assessment of natural radiation dose.Cement is one of the major component of the building materials ...

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Alpha radioactivity in Indian cement samples

Cement is a commonly used building construction material and India is the world's second largest cement producer (6% share of world cement production) after China (44%), surpassing the developed nations like US and Japan. The natural level of radioactivity in cement gives rise to internal and external indoor exposure. The external exposure is

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EVALUATION OF THE ENVIRONMENTAL RADIOACTIVITY

EVALUATION OF THE ENVIRONMENTAL RADIOACTIVITY AROUND DANGOTE CEMENT EXCAVATION SITE ABSTRACT The aim of this research work is to measure and analyse the environmental radioactivity around Dangote cement, excavation site. To obtain data that will serve as reference material for environment assessment. The method of radiation measurement employed in

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Environmental Assessment of Different Cement

2016-4-18  16 of cement manufacturing processes. For that reason in this study, in order to help cement 17 manufactures to operate in a more environmental friendly way, and to assess which 18 manufacturing process is more sustainable, the environmental impact of four different cement 19 manufacturing processes is estimated.

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Radioactivity and radiation hazard assessment of

Radioactivity and radiation hazard assessment of Cauvery River, Tamilnadu, India S. Murugesan 1*, S. Mullainathan 2, V. Ramasamy 3, V. Meenakshisundaram 4 1Department of Physics, Sathyabama Univer sity, chennai-600 119, Tamilnadu, India 2Department of Physics, A.V.C College of Engineering, Mayiladuthurai-608 002, Tamilnadu, India 3Department of Physics, Annamalai University,

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CHAPTER II LITERATURE REVIEW 2.1 Cement Industry

2012-4-11  production of clinker, the main substance of cement, is estimated at about 1.75 ± 0.1 MJ per kg clinker. The actual heat requirement is higher, and it depends on the type of process applied. Cement production processes are generally distinguished into wet process, semi-wet process, semi-dry and Lepol process, and dry process. For the

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Assessment of CO2 capture technologies in cement ...

Highlights Integration of 3 CO 2 capture technologies with a cement making process was studied. Chemical looping has lower energy consumption than amine scrubbing. Energy recovery in chemical looping is 11.5 times higher than amine scrubbing. Amine scrubbing has the highest CO 2 abatement effect. Oxy-combustion cement making is the least energy intensive concept.

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