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Listar por autor "Velázquez Rodríguez, Sergio"

Mostrando ítems 1-5 de 5

An assessment of the pozzolanic activity of a spent catalyst from catalytic cracking using methods based on the measurement of the electrical conductivity and pH of suspensions with calcium hydroxide

Velázquez Rodríguez, Sergio; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan (MDPI, 2014-03)

[EN] The pozzolanic activity of the spent catalyst produced by fluid catalytic cracking (FCC) has been studied by various methods in recent years. However, no quick and easy method has been reported for this activity based ...
Assessment of pozzolanic activity using methods based on the measurement of electrical conductivity of suspensions of portlnad cement and pozzolan

Velázquez Rodríguez, Sergio; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan (MDPI, 2014-11)

[EN] The use of methods based on measuring electrical conductivity to assess pozzolanic activity has recently been used primarily in aqueous suspensions of pozzolan: calcium hydroxide. However, the use of similar methods ...
Evaluation of the pozzolanic activity of spent FCC catalyst/fly ash mixtures in Portland cement pastes

Velázquez Rodríguez, Sergio; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan (ELSEVIER SCIENCE BV, 2016-05)

High pozzolanic activity of the residue spent catalytic cracking catalyst (FCC) has been reported by various authors in recent years. However, no report on the lime fixation of this residue when dosed together with other ...
Pozzolanic Reaction Rate of Fluid Catalytic Cracking Residue (FC3R) in Cement Pastes

Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Velázquez Rodríguez, Sergio (Thomas Telford (ICE Publishing), 2013-02)

Fluid catalytic cracking catalyst residue (FC3R) is a waste material generated in the petroleum industry. Previous research has shown that FC3R exhibits excellent pozzolanic properties in Portland cement mixtures. The ...
Spent FCC catalyst for improving early strength Portland cement

Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan; Vunda, Christian; Velázquez Rodríguez, Sergio; Soriano Martínez, Lourdes (American Concrete Institute, 2014-02)

[EN] Spent fluid catalytic cracking (FCC) catalyst from the petrol industry has proven to be a very active pozzolanic material. This behavior leads to an additional increase in the strength of the mortar that contains this ...