Nuevo procedimiento de ensayo para determinar el coeficiente de pulimento acelerado de mezclas bituminosas

Rodríguez, Antonio Ramírez

doi:10.20868/upm.thesis.44891

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Leaching tests were carried out the protocol MCC1P [5] using monolithic samples, the characterization of mechanical behavior was made using the Brazilian test or diametral compression tests [6][7], respect to hardness test were made indentations in a Mitutoyo microhardness tester, the diamond indenter load was 50g.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Vitrocerus: An alternative for processing MTR spent fuel from research reactors

2012

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Research reactors spent fuels disposal is a problematic area that conduces to the quest of feasible solutions for ensure safe destination of the spent fuels. In this work, a new method for processing spent fuel from MTR reactors is presenting. The main objective of this process, is the immobilization of principal radioactive elements that are present in the spent fuel, in order to achieve a suitable material which could be temporally stored safely. The Vitrocerus method involves ordinary physical procedures performed in a hot cell. It differs from conventional vitrification because there is a reduction in volume of glass material added.The process propose the ceramization of a mixture of spent fuel plates (wich were milled and calcined previously) with natural uranium oxide (U 3 O 8 ) to obtain the desired isotopic dilution (to low the U 235 enrichment). At the same time, a small fraction of VG98/12 glass [1] was added to enhance low temperature sintering. The treatment and conditioning tasks proposed in Vitrocerus were tested on MTR fuel miniplates that simulate a real U 3 Si 2 dispersed in Al fuel, which were successfully transformed into ceramic sintered pellets [2,3] with low enrichment, structural integrity, outstanding mechanical properties and water corrosion resistance. Eventually these pellets could be stored safely in an interim dry storage facility.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Vitrocerus: An alternative for processing MTR spent fuel from research reactors

2012

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Characterization of Hot-Mix Asphalt Made with Recycled Concrete Aggregates that Have Been Cured for 4 Hours in the Oven

Pasandín

Pérez

Gómez-Meijide

2013

AMR

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Abstract. In this research a laboratory characterization of hot-mix asphalt (HMA) made with recycled concrete aggregates (RCA) from construction and demolition waste (CDW) as base layer in road construction has been conducted. HMA containing 5%, 10%, 20% and 30% of RCA in place of virgin aggregate were evaluated. To improve water resistance of the mixtures, they were left in an oven for 4 hours at mixing temperature before compaction to allow the bitumen absorption and, in addition, obstructing the mortar pores, strengthening the attached mortar onto the RCA surface and thus, preventing water pathways. The tested mixtures complied with Spanish water resistance requirement and also showed a water resistance performance much higher than that of the mixtures that were not cured in the oven. Stiffness and resistance to permanent deformation were also studied showing satisfactory results.

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Nuevo procedimiento de ensayo para determinar el coeficiente de pulimento acelerado de mezclas bituminosas

Cited by 2 publications

References 11 publications

Vitrocerus: An alternative for processing MTR spent fuel from research reactors

Vitrocerus: An alternative for processing MTR spent fuel from research reactors

Characterization of Hot-Mix Asphalt Made with Recycled Concrete Aggregates that Have Been Cured for 4 Hours in the Oven

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