Influence of natural additions on the physicochemical characteristics of cemented radioactive resins

Faiz, Z.; Fakhi, S.; Bouih, A.; Hadi, Hassan El

doi:10.1007/s13762-019-02213-w

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…Characterized by its siliceous morphology, the sand is chemically inert towards the components of the mixture. Based on the previous results [10] which demonstrated, that the use of 0.2 mmsand improves the mechanical resistance of the cementitious matrix. The sand used for the preparation of all formulations has a particle size ranging from 0.08 to1.6 mm (Table 3).…”

Section: Matérials and Methodsmentioning

confidence: 93%

The effect of the addition of Alumina powder on the confinement properties of a cement mortar

et al. 2018

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Organic radioactive waste can occur in solid, liquid or rarely gaseous form. In general, organic components of radioactive waste Generally, the organic components of the radioactive waste have a contaminant effect stronger than most of the inorganic components, because of their low melting point, of their answer to the radiolyse or of their volatilitydu to their low melting point, to their answer to the radiolyse or to their volatility. This property can significantly affect the strategy adopted for their management. Organic radioactive waste results from the use of radioisotopes in the National Center for Energy, Nuclear Science and Technology (CNESTEN) and from medical applications. Organic radioactive waste requires management steps that take into account not only their radioactivity but also their chemical content. The aim of this study is the optimization of the stabilization of radioactive organic effluents in cementitious matrices. Thus, we study the effects of the addition of the alumina powder on the physicochemical and mechanical properties of the cement paste. The mortar was made by mixing Portland cement, sand, water and alumina powder (88 μm). The study showed that the addition of 12% alumina powder improves the compressive strength.

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Section: Matérials and Methodsmentioning

confidence: 93%

The effect of the addition of Alumina powder on the confinement properties of a cement mortar

et al. 2018

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“…The ion exchange resins [9,10] MDP-15 type, in of clear spherical beads form used in the purification of the reactor water circuits as well as the spent fuel storage pools of the TRIGA MARK II reactor, PUROLITE NRW 37 type, these cations exchange resins are strongly acid, and gel type. The ion exchange is a process by which the ions contained in a solution are removed to be replaced by an equivalent number of other ions of the same electrical charge.…”

Section: Ion Exchange Resinsmentioning

confidence: 99%

Study of the effect of Kaolin in the mortar of cement matrices by confinement of ion exchange resins

et al. 2018

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Radioactive waste arising as a result of nuclear activities should be safely managed from its generation to final disposal in an appropriate conditioned form to reduce the risk of radiation exposure of technical personnel and of the public and to limit contamination of the environment. The immobilization of low and intermediate level radioactive wastes in cementitious matrices is the most commonly used technique to produce inexpensive waste matrix that complies with regulatory requirements in order to protect humans and the environment against nuisance caused by ionizing radiation. Cement based materials are used in radioactive waste management to produce stable waste forms. This matrix constitutes the first build engineering barrier in disposal facilities. In this work, the kaolin is used to enhance the mechanical performance of the matrix of confinement of ion exchange resins by gradually replacing the sand in mortar with kaolin clay. The Kaolin clay sample was a special pure product, sourced from a foreign country. The maximum quantity of resins that can be incorporated into the mortar formulation without the packages losing their strength is 13.915% which results in a better mechanical strength at 6.7686 MPA compression with kaolin.

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Study of the spent resins confinement, as radioactive waste, by cementation in the presence of Moroccan natural red clay

Sadiq

Ghailassi

Faiz

et al. 2021

Progress in Nuclear Energy

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Influence of natural additions on the physicochemical characteristics of cemented radioactive resins

Cited by 5 publications

References 35 publications

The effect of the addition of Alumina powder on the confinement properties of a cement mortar

The effect of the addition of Alumina powder on the confinement properties of a cement mortar

Study of the effect of Kaolin in the mortar of cement matrices by confinement of ion exchange resins

Study of the spent resins confinement, as radioactive waste, by cementation in the presence of Moroccan natural red clay

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