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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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Soort cement:Portland cement. Verwerkingstijd:20 min. Enci portland cement 25kg is een grijs cement dat gebruikt kan worden als basis voor diverse mortels. Zo is het cement geschikt voor onder meer het maken van betonnen vloeren, funderingen, cementgebonden dekvloeren en voegwerk. Het cement is universeel en bijzonder sterk.
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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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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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@article{osti_22806492, title = {Impact of gamma-ray irradiation on hardened white Portland cement pastes exposed to atmosphere}, author = {Maruyama, Ippei and Ishikawa, Shunsuke and Nuclear Power Department, Kajima Corporation and Yasukouchi, Junichi and Sawada, Shohei and Kurihara, Ryo and Takizawa, Masayuki and Kontani, Osamu}, abstractNote = {Samples of matured hardened cement paste were.
Why Portland Cement Is Called Portland? Engineering Discoveries
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.
Low Heat Portland Cement, Properties, Uses And Disadvantages Engineering Discoveries
In this sense, CaCO 3 generated by Portland cement carbonation has been shown, in several laboratory tests and mathematical models,. Afterwards, gamma spectrometry measurements were carried out on the fully carbonated mortars. Two types of samples were used in this study: (i) quadrangular prisms resulting from the strength tests (4 cm on.
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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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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.
Portland Cement Uses How to Use Portland Cement What Is Portland Cement Used for How Is
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.
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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γ-C 2 S has high potential for use as a construction material with the additional benefit of CO 2 absorption due to its high carbonation reactivity. This study quantitatively investigates the evolution and influencing factors of the microstructure of the γ-C 2 S compact molded by cold isostatic pressing, including microhardness, porosity, pore structure, and carbonation degree at different.
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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.
The Definitive Guide to Understanding Portland Cement & Its Uses
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 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.
Cement
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.
