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DOI: 10.1016/J.CONBUILDMAT.2021.123644 Corpus ID: 236305983; Effect of gamma irradiation on Portland cement: Hydrogen evolution and radiation resistance @article{Bykov2021EffectOG, title={Effect of gamma irradiation on Portland cement: Hydrogen evolution and radiation resistance}, author={G. L. Bykov and Evgeny V. Abkhalimov and Vadim Ershov and Boris G. Ershov}, journal={Construction and.
Cement
In this study, γ -dicalcium silicate ( γ -C 2 S) was incorporated into ordinary Portland cement (OPC) to sequester CO 2 to enhance the carbonation resistance of cement-based composite materials. γ -C 2 S can react with CO 2 rapidly to form vaterite and high dense SiO 2 gel which could block the pores off and then inhibit further diffusion of CO2 into the system.
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Portland cement, the most widely used construction material in the world, is a synthetic material made by burning a mixture of ground limestone and clay, or materials of similar composition, in a rotary kiln at a sintering temperature of 1450 °C.
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Cubic Portland cement specimens were casted and exposed to the gamma radiation of a 60Co multipurpose irradiator, at IPEN-CNEN/SP. The effects of doses between 1000 kGy and 4000 kGy are evaluated by X-Ray Diffraction, Scanning Electron Microscopy, X-ray micro tomography, neutrongraphy and neutron scattering.
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In this study, samples of commercial Portland cement mixed with 30% weight of crushed waste silicate glass were prepared in the shape of well-dried cylinders. Then, their physical and mechanical properties were investigated for two types of samples: samples without exposure and samples with exposure to gamma-ray and neutron irradiation.
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Portland Cement Provided with W aste Silicate Glass Mohanad S. Eid 1 , Ibrahim I. Bondouk 1 , Hosam M. Saleh 2, * , Khaled M. Omar 1 and Hassan M. Diab 3 1 Physics Department, Faculty of Science.
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Portland cement mixed with different percentages of granulated lead is studied as shields for gamma radiation. The samples are cured at 100% relative humidity for various time intervals. It is found that cement containing 5% lead has the higher attenuation coefficient value.
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Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin, and is usually made from limestone.
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E.V. Abkhalimov , V.A. Ershov , B.G. Ershov Add to Mendeley https://doi.org/10.1016/j.radphyschem.2021.109822 Get rights and content Abstract: The radiation stability of Portland cement and magnesium phosphate cement on γ-irradiation was studied up the absorbed dose of 100 MGy.
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Portland cement is a complex product obtained from unprocessed common natural materials: limestone and clay. Consequently, the characteristics of Portland cement clinker may vary from one cement plant to another.
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The results showed that Portland cement with a high concentration of BaSO 4 /Bi 2 O 3 had the ability to absorb radiation from X-rays in the range of 95.54-99.87% and gamma energy in the range of 93.37-98.88%. Moreover, the composite of BaSO 4 /Bi 2 O 3 induced a homogenous structure of Portland cement possibly affecting the strength of the.
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Portland cement is recommended by the authors [22] in protection from gamma radiation. The aim of the present work is firstly to prevent the free movement of contaminants in solid glass waste by immobilization of this glass waste in cement as a simple and low-cost technique of containment of the wastes inside a stable solid form in order to be.
Properties of Ordinary Portland Cement
The gamma radiation shielding features of the Portland cement pastes doped with brass and copper were studied. • The mm, Z eff and HVL values of the samples were estimated theoretically and experimentally. • MFP, TVL, Nel and EBF parameters were calculated for determining the gamma radiation shielding capability of the samples. •
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Introduction Safe disposal of liquid radioactive waste (LRW) is a pressing problem that should be solved to ensure successful progress of nuclear power engineering. Cement materials, primarily Portland cement, are widely used in nuclear power engineering and for disposal of solid and liquid radioactive waste (RW).
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According to the Review Manual for Aging Management Technical Evaluation [ 2 ], "the mechanism of the decrease in concrete strength due to neutron irradiation and gamma-ray irradiation is not sufficiently clarified, but it is known that substances subjected to neutron irradiation and gamma-ray irradiation generate heat, and it is highly possible.
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Miguel Ángel Sanjuán, José A. Suarez-Navarro, Cristina Argiz & Pedro Mora 201 Accesses 14 Citations Explore all metrics Abstract Activity concentration of 232 Th, 226 Ra and 40 K was determined in 11 white and 63 grey Portland cements by using gamma spectrometry.