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Listar por palabra clave "Pozzolanic activity"

Mostrando ítems 1-11 de 11

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 ...
Cement equivalence factor evaluations for fluid catalytic cracking catalyst residue

Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Velazquez Rodriguez, Sergio (Elsevier, 2013-05)

Fluid catalytic cracking catalyst residue (FC3R) is a waste material that can be used as a Portland cement replacement in pastes, mortars, and concrete. The flow table results show that FC3R is a water demanding addition; ...
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 ...
Mineralogical evolution of Portland cement blended with silica nanoparticles and its effect on mechanical strength

Tobón, J. I.; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Restrepo Baena, Oscar Jaime (Elsevier, 2012-11)

Mineralogical analysis on pastes of Spanish Portland cement Type I, blended with nanosilica was carried out by conventional and high-resolution thermogravimetric analysis (TG-HRTG) and X-ray diffraction (XRD) in order to ...
Potential use of ceramic sanitary ware waste as pozzolanic material

Reig Cerdá, Lucía; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan (Elsevier, 2022-11-30)

[EN] This paper evaluated the pozzolanic activity of ceramic sanitary ware (CSW) waste when blended with Portland cement (PC). CSW waste units were broken, crushed and milled to reduce their particle size. These particles ...
Pozzolanic activity of a spent fluid catalytic cracking catalyst residue

Garcés, Pedro; Glasser, Fred P.; Brew, Daniel R.M.; Zornoza Gómez, Emilio Manuel; Paya Bernabeu, Jorge Juan (Thomas Telford (ICE Publishing), 2011)

The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and ...
Pozzolanic activity of tiles, bricks and ceramic sanitary-ware in eco-friendly Portland blended cements

Pitarch, A. M.; Reig Cerdá, Lucía; Tomas, A. E.; Forcada, G.; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª (Elsevier, 2021-01-10)

[EN] Reusing ceramic waste as a pozzolanic admixture may offer environmental benefits as it allows the reduction in the consumption of natural resources and energy, and the reduction of CO2 emissions associated with Portland ...
Reutilisation of hazardous spent fluorescent lamps glass waste as supplementary cementitious material

Pitarch, A.M.; Reig, L.; Gallardo, A.; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Rochina, S. (Elsevier, 2021-07-19)

[EN] Spent fluorescent lamps glass (SFLG) waste, manually and mechanically processed in a lamps waste treatment plant, was used to partially replace up to 50 wt% Portland cement (PC). Both waste types exhibited similar ...
Use of ancient copper slags in portalnd cement and alkali activated cement matrices

Nazer, Amin; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª (Elsevier, 2016-02)

Some Chilean copper slag dumps from the nineteenth century still remain, without a proposed use that encourages recycling and reduces environmental impact. In this paper, the copper slag abandoned in landfills is proposed ...
Vegetable ashes as Supplementary Cementitious Materials

Martirena, F.; Monzó Balbuena, José Mª (Elsevier, 2018-12)

[EN] Approximately 140 billion metric tons of biomass are produced every year in the world from agriculture. The ashes resulting from firing agricultural wastes such as rice husk, sugar cane and others can be used as ...