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Listar por palabra clave "Portland cement"

Mostrando ítems 1-20 de 22

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A new geopolymeric binder from hydrated-carbonated cement

Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Soriano Martínez, Lourdes; Mitsuuchi Tashima, Mauro (Elsevier, 2012-05)

This paper evaluates the use of hydrated Portland cement as the raw material in the production of geopolymers. The silicon and aluminium oxides needed for the geopolymerization process were produced by the carbonation of ...
Aplicação das cinzas da indústria sucroalcooleira como biopozolanas e Kfertilizante: cana-de-açúcar e cana-energia

Pitolli Lyra, Gabriela (Universitat Politècnica de València, 2023-06-05)

[ES] Una alternativa para reducir el consumo de materias primas y los impactos ambientales derivados del cemento Portland es la sustitución parcial del clínker por adiciones minerales de subproductos agroindustriales. El ...
Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended portland cement: Microstructural characterization of pastes and mechanical strength of mortars

Moraes, J. C. B; Akasaki, Jorge Luis; Melges, J. L. P.; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan; Tashima, Mauro Mitsuuchi (Elsevier, 2015-09)

The aim of this paper is to assess the pozzolanic reactivity of sugar cane straw ash (SCSA) obtained through an auto-combustion process and the mechanical properties of SCSA-containing systems. Characterization of SCSA ...
Comparativas de resistencias mecánicas entre morteros tradicionales y morteros de distintas mezclas con cal y subproductos industriales

Rodríguez Cózar, Javier (Universitat Politècnica de València, 2014-11-17)

[ES] En el presente trabajo se ha realizado un estudio comparativo de resistencia mecánica a compresión entre morteros con diferentes adiciones: ceniza de cascara de arroz, ceniza volante y escoria siderúrgica de alto ...
Determination of the optimum parameters in the high resolution thermogravimetric analysis (HRTG) for cementitious materials

Ivan Tobón, Jorge; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Restrepo Baena, Oscar Jaime (Akadémiai Kiadó, 2012)

In this article, the methodology to implementation of high resolution thermogravimetric analysis (HRTG) for construction materials like Portland cement pastes is presented. The aim of this technique is to make easier the ...
Efecto de las cenizas volcánicas y nanoaditivos acelerantes en la fabricación de sistemas cementantes

Villarreal Centurión, Lady Elizabeth (Universitat Politècnica de València, 2023-07-20)

[ES] Esta investigación se centra en la fabricación de un sistema cementante utilizando cenizas volcánicas como sustituto del cemento Portland. Las cenizas pertenecen a los volcanes Cumbre Vieja y La Yezosa y, para su ...
Efecto del ácido cítrico en el sistema cemento/yeso/ceniza volante

Arilla Agorriz, Elías (Universitat Politècnica de València, 2014-05-22)

[ES] Los sistemas ternarios de cemento portland (CP), yeso y ceniza volante (CV), con bajo contenido en CP pueden resultar de interés en diversas aplicaciones en construcción permitiendo obtener materiales de bajo coste. ...
Estudios preliminares del cemento hidratado para su reutilización en geopolímeros

Segura Sierpe, Yasna Pamela (Universitat Politècnica de València, 2014-11-18)

[EN] The industry of construction is a huge waste producer. This work, developed from both materials and sustainability fields, pretends to evaluate the hydrated cement waste. The principal scope is to produce a new ...
Evaluación por medio de técnicas no destructivas del daño producido por ataque externo de sulfatos en mortero de cemento Portland

Martínez Mercado, Álvaro Alejandro (Universitat Politècnica de València, 2017-04-25)

Materials based on portland cement can be attacked by external environments rich in sulphates (selenite waters, marine waters), generating a process of expansion by formation of etringición and gypsum. Expansion determination ...
From Natural to Artificial: Vernacular housing in the Spanish Caribbean

del Cueto, Beatriz (Editorial Universitat Politècnica de València, 2022-09-13)

[EN] The Spanish American War of 1898 and the colonization of the Spanish Caribbean (Cuba, Puerto Rico, and the Dominican Republic) by the Government of the United States (U.S.), brought about changes to local vernacular ...
Huella de carbono de sistemas conglomerantes: Cemento Portland / Ceniza volante / Cal hidratada

Lozano Prado, Rafael (Universitat Politècnica de València, 2022-01-14)

[ES] La sustitución de Cemento Portland por Cenizas Volantes es una práctica bien conocida que resulta beneficiosa por varios motivos: 1. Se reduce la cantidad de Cemento Portland, lo que supone un ahorro económico y ...
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 ...
Possibilities of reusing sugar cane straw ash in the production of alternative binders

Bassan De Moraes, Joao Claudio; Queiroz, Daniela Cintra de Araújo; Akasaki, Jorge Luis; Pinheiro Melges, Jose Luiz; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan; Mitsuuchi Tashima, Mauro (Trans Tech Publications, 2016)

[EN] Sugar cane production is increasing in Brazil due the demand in manufacturing sugar and alcohol. During production process, several wastes are generated, such as sugar cane straw. After a burning process of this waste ...
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 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 ...
Redució d'emprenta de CO2 en formigons estructurals

Aspas García, Marina (Universitat Politècnica de València, 2014-11-10)

[ES] La producción de cemento Portland supone alrededor de un 6% del total de las emisiones de CO2 a la atmósfera. La finalidad del trabajo es observar cada una de las distintas opciones que permitiesen una reducción de ...
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 ...
Structure of Portland Cement Pastes Blended with Sonicated Silica Fume

Rodriguez Martinez, Erich David; Bernal, Susan A.; Provis, John L.; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria (American Society of Civil Engineers, 2012)

[EN] Application of power ultrasound to enhance dispersion of commercial densified silica fume leads to increased compressive strengths and refinement of the pore structure in mortars, compared with those that are ...
Study of durability of Portland cement mortars blended with silica nanoparticles

Tobon, Jorge I; Paya Bernabeu, Jorge Juan; Restrepo, Oscar J. (Elsevier, 2015-04)

In this paper the effects of nanosilica (NS) on porosity, capillary suction (UNE 8398:2008), compressive strength (ASTM C 349), and sulfate resistance (ASTM C 1012) were evaluated for mortars made with Portland cement ...
Use of high-resolution thermogravimetric analysis (HRTG) technique in spent FCC catalyst/Portland cement pastes

Soriano Martínez, Lourdes; Mitsuuchi Tashima, Mauro; Bonilla Salvador, María Mercedes; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria (SPRINGER, 2015-06)

Thermogravimetric analysis is one of the most common instrumental techniques used for the characterization of pastes, mortars and concretes based on both calcium hydroxide and Portland cement. Important information about ...