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Listar por palabra clave "Compressive strength"

Mostrando ítems 1-20 de 33

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Alkaline activation of ceramic waste materials

Reig Cerdá, Lucía; Mitsuuchi Tashima, Mauro; Soriano, L.; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan (Springer Verlag (Germany), 2013-01)

Ceramic materials represent around 45 % of construction and demolition waste, and originate not only from the building process, but also as rejected bricks and tiles from industry. Despite the fact that these wastes are ...
Assessment of properties of recycled concrete by means of a highly fractioned factorial design of experiment

López-Gayarre, F.; Lopez-Colina, C.; Serrano-Lopez, M.A.; García Taengua, Emilio José; Lopez Martinez, A. (Elsevier, 2011-10)

The study presented in this paper has been carried out using a highly fractional factorial experimental design. This design allows the analysis of a greater number of factors and levels with a reduced number of mixes. In ...
Assesssment of pozzolanic/hydraulic reactivity of vitreous calcium aluminosilicate (VCAS) ussing different methods

Mitsuuchi Tashima, Mauro; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria (Elsevier, 2016-04)

[EN] The aim of this paper is to assess the possibility of using vitreous calcium aluminosilicate (VCAS) as a supplementary cementitious material in the production of Portland cement mortars. The calcium hydroxide consumption ...
Characterization and Reactivity of Natural Pozzolans from Guatemala

Sierra, Oscar M.; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martinez, Lourdes; Quiñonez, Javier (MDPI AG, 2022-11)

[EN] The possibility of using pozzolanic materials as a partial substitute for Portland cement (PC) to develop mortars and concretes promotes environmental and economic benefits. The present paper includes an in-depth ...
Compressive strength and microstructure of alkali-activated blast furnace slag/sewage sludge ash (GGBS/SSA) blends cured at room temperature

Tashima, M.M.; Reig, L.; Santini, M. A., Jr.; Moraes, J.C.B; Akasaki, J. L.; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Soriano Martinez, Lourdes (Springer-Verlag, 2017-07)

[EN] In the present work, ground granulated blast furnace slag (GGBS) and sewage sludge ash (SSA) blends were assessed for the production of alkali-activated pastes and mortars. Percentages of SSA to substitute GGBS ranged ...
Compressive strength of masonry made of clay bricks and cementmortar: Estimation based on Neural Networks and Fuzzy Logic

Garzón Roca, Julio; Obrer Marco, Creu; Adam Martínez, José Miguel (Elsevier, 2013-03)

The use of mathematical tools such as Artificial Neural Networks and Fuzzy Logic has been shown to be useful for solving complex engineering problems, without the need to reproduce the phenomenon under study, when the only ...
Development of sustainable fired clay bricks by adding kindling from vine shoot: Study of thermal and mechanical properties

Velasco, Pedro M.; Ortiz, María Pilar M.; Giró, Manuel Antonio M.; Melia, Daniel M.; Rehbein, Jorge H. (Elsevier, 2015-04)

[EN] This paper studies the addition of kindling from vine shoots in the production of fired clay bricks in order to achieve a better insulation of the buildings enclosure and a new way for recycling vine shoots, a waste ...
Effect of curing time on the microstructure and mechanical strength development of alkali activated binders based on vitreous calcium aluminosilicate (VCAS)

Mitsuuchi Tashima, Mauro; Soriano Martínez, Lourdes; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan (Indian Academy of Sciences, 2013-04)

The aim of this paper is to study the influence of curing time on the microstructure and mechanical strength development of alkali activated binders based on vitreous calcium aluminosilicate (VCAS). Mechanical strength of ...
Effect of sugar cane straw ash (SCSA) as solid precursor and the alkaline activator composition on alkali-activated binders based on blast furnace slag (BFS)

Moraes, J.C.B; Mitsuuchi Tashima, Mauro; Akasaki, Jorge Luis; J.L.P.Melges; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan (Elsevier, 2017)

[EN] Alkali-activated materials (AAM) comprise one of the solutions to diminish the use of Portland cement in building construction and, consequently, a reduction in the environmental problems related to CO2 emissions and ...
Effects of concrete composition on transmission length of prestressing strands

Martí Vargas, José Rocío; Serna Ros, Pedro; Navarro Gregori, Juan; Bonet Senach, José Luís (Elsevier, 2012)

The bond behaviour of prestressing strands in precast pretensioned concrete members, and its transmission length, depends on several factors. However, no consensus exists on the main parameters to be considered in the ...
Estudio del módulo de deformación del hormigón: expresiones para su predicción y aspectos experimentales relacionados con su determinación

Sanz de la Hera, Javier (Universitat Politècnica de València, 2015-02-16)

[EN] In this dissert, the factors affecting the development of stiffness by concrete are studied. Several expresions that lead to the prediction of concrete are tested. (
Evaluation of the degradation process of cement-based materials exposed to aggressive environment by using ultrasonic techniques and physical characterisation

MAHMOUD, TAREK IBRAHIM (Universitat Politècnica de València, 2013-03-07)

El hormigón armado compuesto de cemento Portland fue inventado hace algo más de un siglo aproximadamente y se ha convertido en el material más utilizado en la construcción. La durabilidad de este hormigón es una de las ...
Evaluation of the long-term compressive strength development of the sewage sludge ash/metakaolin-based geopolymer

Istuque, D.; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan; Akasaki, J. L.; Melges, J. L. P.; Tashima, M. M. (Departmento de Publicaciones del CSIC, 2021-09)

[EN] This paper aimed to evaluate the long-term compressive strength development of the sewage sludge ash/metakaolin (SSA/MK)¿based geopolymer. SSA/MK¿based geopolymeric mortars and pastes were produced at 25ºC with different ...
Influence of calcium aluminate cement (CAC) on alkaline activation of red clay brick waste (RCBW)

Reig Cerdá, Lucía; Soriano Martínez, Lourdes; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan (Elsevier, 2016-01)

In this paper, the effect of calcium aluminate cement (CAC) additions on the alkali activation of red clay brick waste (RCBW) was studied at room temperature and at 65 C. RCBW was partially replaced with CAC (0e50 wt.%) ...
Influence of the activator concentration and calcium hydroxide addition on the properties of alkali-activated porcelain stoneware

Reig Cerdá, Lucía; Soriano Martínez, Lourdes; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan (Elsevier, 2014-07)

Objective The aim of this research was to investigate the influence of the alkali activator concentration and calcium dosage on the fresh behavior, compressive strength and microstructure of the binder produced by the ...
La necesidad de nuevos hormigones para una construcción más sostenible: los geopolímeros

Tejedor Montagud, Joan (Universitat Politècnica de València, 2019-01-21)

[ES] Actualmente, gracias al hormigón se pueden construir todo tipo de edificios, con múltiples formas, texturas y acabados diferentes. Es el material de construcción más utilizado a nivel mundial. El problema, es que ...
Macroporous poly(lactic acid) construct supporting the osteoinductive porous chitosan-based hydrogel for bone tissue engineering

Rogina, A.; Pribolsan, L.; Hanzek, A.; Gomez-Estrada, L.; Gallego Ferrer, G.; Marijanovic, I.; Ivankovic, M.; Ivankovic, H. (Elsevier, 2016)

[EN] Poor mechanical performance of porous chitosan-hydroxyapatite systems is the main limitation in bone tissue engineering. If we merge good mechanical performance of poly(lactic acid) construct with osteoinductive and ...
Mechanical and thermal characterisation of geopolymers based on silicate-activated metakaolin/slag blends

Bernal, Susan A.; Rodríguez Martínez, Erich David; Mejia De Gutierrez, Ruby; Gordillo, Marisol; Provis, John L. (Springer Verlag (Germany), 2011-08)

[EN] This article assesses the effect of mix design parameters on the compressive strength and thermal performance of alkali silicate-activated blends of metakaolin (MK) and granulated blast furnace slag (GBFS). A strong ...
Microconcrete with partial replacement of Portland cement by fly ash and hydrated lime addition

Lorca, P.; Calabuig Pastor, Rafael; Benlloch Marco, Javier; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan (Elsevier, 2014-12)

[EN] The reduction in Portland cement consumption means lower CO2 emissions. Partial replacement of Portland cement by pozzolans sucha as fly ash has its limitations due to the quantity of calcium hydroxide generated in ...
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 ...