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Listar por palabra clave "Compressive strength"

Mostrando ítems 1-20 de 39

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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 ...
Auto-Combustion of Corn Straw: Production and Characterization of Corn Straw Ash (CSA) for Its Use in Portland Cement Mortars

Paya Bernabeu, Jorge Juan; Escalera, Alejandro; Borrachero Rosado, María Victoria; Rosello Caselles, Josefa; Monzó Balbuena, José Mª; Soriano Martinez, Lourdes (MDPI AG, 2024-09)

[EN] Agricultural waste availability implies the possibility of recovering energy as biomass. The collateral effect is the production of ashes that, in some cases, have the potential to be reused in the manufacture of ...
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 Aggregates Packing with the Maximum Density Methodology in Pervious Concrete

Arcolezi, Karina H.; da Silva, Rodrigo G.; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan; Mitsuuchi Tashima, Mauro; Akasaki, Jorge Luis (MDPI AG, 2023-03)

[EN] The granulometric distribution of the aggregates used in pervious concrete can significantly impact its mechanical and hydraulic properties by modifying granular skeleton and pore distribution. The unit weight increases ...
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. (
Evaluating the impact of industrial wastes on the compressive strength of concrete using closed-form machine learning algorithms

López Paredes, Carlos Roberto; García, Cesar; Onyelowe, Kennedy C.; Zúñiga Rodríguez, María Gabriela; Gnananandarao, Tammineni; Andrade-Valle, Alexis Iván; Velasco, Nancy; Herrera Morales, Greys Carolina (Frontiers Media, 2024-10-03)

[EN] Industrial wastes have found great use in the built environment due to the role they play in the sustainable infrastructure development especially in green concrete production. In this research investigation, the ...
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 sugar cane straw ash in metakaolin-based geopolymers

Moraes, J.C.B; Moraes, M.J.B.; Batista, J.P.B.; Akasaki, J.L.; Font, A.; Tashima, M.M.; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Payá, J. (Elsevier, 2024-09-20)

[EN] The present investigation studied the use of agro-industrial waste, sugar cane straw ash (SCSA), to partially replace commercial metakaolin (MK) in geopolymers (0 %, 15 %, 30 %, and 45 % percentages of substitution ...
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 ...