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Browsing by Author "Akasaki, Jorge Luis"

Now showing items 1-20 of 33

Alkali activated materials based on fluid catalytic cracking catalyst residue (FCC): Influence ofSiO2/Na2O and H2O/FCC ratio on mechanical strength and microstructure

Mitsuuchi Tashima, Mauro; Akasaki, Jorge Luis; Melges, J.L.P.; Soriano Martínez, Lourdes; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria (Elsevier, 2013)

Reuse of industrial and agricultural wastes as supplementary cementitious materials (SCMs) in concrete and mortar productions contribute to sustainable development. In this context, fluid catalytic cracking catalyst residue ...
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 ...
Avaliação de matriz de gesso com incorporação de borracha de pneus para utilização na construção civil

Pinto, N.A.; Fioriti, C.F.; Paya Bernabeu, Jorge Juan; Akasaki, Jorge Luis (Universidade Estadual de Maringá, 2016)

[EN] The use of gypsum in the Brazilian construction industry has been growing steadily in recent years, when the drywall system started to be used in the internal seals of all types of buildings. The new use this should ...
Behavior of metakaolin-based geopolymers incorporating sewage sludge ash (SSA)

Istuque, D.B.; Reig Cerdá, Lucía; Moraes, J.C.B; Akasaki, Jorge Luis; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan; Malmonge, J.A.; Mitsuuchi Tashima, Mauro (Elsevier, 2016-10)

[EN] In recent years, geopolymers have become a widely researched binding material. There are technological and environmental advantages tousing this type of binder instead of Portland cement. In this study, binary systems ...
Characterization of ash sludge from wastewater treatment plants: Assessment for construction purposes

Silveira Thiago Rosa, C.M. da; Melges, J.L.M.; Paya Bernabeu, Jorge Juan; Akasaki, Jorge Luis; Marinho, J.R.D.; Oliveira, D.S. (Trans Tech Publications, 2014)

Considering that the human being is in a universe where the population demand for consumer goods is rapidly growing, the United Nations (UN) concluded that the effective implementation of the use of renewable resources has ...
Cinza de casca de arroz (CCA) altamente reativa: método de produção e atividade pozolânica

Mitsuuchi Tashima, Mauro; Fioriti, César Fabiano; Akasaki, Jorge Luis; Paya Bernabeu, Jorge Juan; CIRQUEIRA SOUSA, LEANDRO; Pinheiro Melges, Jose Luiz (2012)

This paper presents a production method for high reactive rice husk ash (RHA) by means of an uncontrolled combustion process. The production process and pozzolanic activity of RHA are described. The pozzolanic reactivity ...
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 ...
Effect of sewage sludge ash on mechanical and microstructural properties of geopolymers based on metakaolin

Istuque, D.B.; Soriano Martinez, Lourdes; Akasaki, J.L.; Melges, J.L.P.; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan; Tashima, M.M. (Elsevier, 2019-04-10)

[EN] This paper explored the effect of sewage sludge ash (SSA) on the mechanical and microstructural properties of geopolymers based on metakaolin (MK) involving two different SiO2/Na2O molar ratios (0.8 and 1.6), two ...
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 ...
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 ...
Evaluation of the Pozzolanic Activity of Uncontrolled-Combusted Sewage Sludge Ash

Istuque, Danilo Bordan; Reig, Lucia; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Pinheiro Melges, Jose Luiz; Akasaki, Jorge Luis; Paya Bernabeu, Jorge Juan; Tashima, Mauro Mitsuuchi (American Society of Civil Engineers, 2021-06-01)

[EN] Waste management is a crucial issue facing modern society. The generation of sewage sludge is increasing annually due to the urbanization and improvement of sanitation systems of cities. The construction sector has ...
Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures

Moraes, J.C.B.; Cordeiro, G.C.; Akasaki, J.L.; Vieira, A.P.; Paya Bernabeu, Jorge Juan (Elsevier, 2021-02-08)

[EN] Studies on reactivity of sugarcane bagasse ash (SCBA), obtained by an autogenous combustion process, with low loss on ignition and three different particle sizes were carried out (SCBA-1, SCBA-2 and SCBA-3). The ashes ...
Increasing the sustainability of alkali-activated binders: The use of sugar cane straw ash (SCSA)

Moraes, J.C.B; Mitsuuchi Tashima, Mauro; Akasaki, Jorge Luis; Pinheiro Melges, Jose Luis; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan (Elsevier, 2016-09)

Alkali-activated binders are the new trend in building construction studies due their good mechanical properties and environmental advantages. These type of binders are obtained by a mixing of a solid precursor with an ...
Mechanical and durability properties of alkali-activated mortar based on sugarcane bagasse ash and blast furnace slag

Pereira, Adriana; Akasaki, Jorge Luis; Melges, José L.P.; Mitsuuchi Tashima, Mauro; Soriano Martínez, Lourdes; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan (Elsevier, 2015-12)

Sugarcane bagasse is an agricultural waste which can be transformed, for cementing purposes, into an interesting material by combustion. Specifically, the ash (SBA) obtained by auto-combustion was used for preparing ...
Microscopy Characterization of Silica-Rich Agrowastes to be used in Cement Binders: Bamboo and Sugarcane Leaves

Rosello Caselles, Josefa; Soriano Martínez, Lourdes; Santamarina Siurana, Mª Pilar; Akasaki, Jorge Luis; Melges, J. L. P.; Paya Bernabeu, Jorge Juan (Cambridge University Press (CUP): STM Journals - No Cambridge Open, 2015-10)

Agrowastes are produced worldwide in huge quantities and they contain interesting elements for producing inorganic cementing binders, especially silicon. Conversion of agrowastes into ash is an interesting way of yielding ...
New geopolymeric binder based on fluid catalytic cracking catalyst residue (FCC)

Mitsuuchi Tashima, Mauro; Akasaki, Jorge Luis; Castaldelli, V.N.; Soriano Martínez, Lourdes; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria (Elsevier, 2012-08)

This paper provides information about the synthesis and mechanical properties of geopolymers based on fluid catalytic cracking catalyst residue (FCC). FCC was alkali activated with solutions containing different SiO 2/Na ...
New method to assess teh pozzolanic reactivity of mineral admixtures by measn of pH and electrical conductivity measurements in lime: pozzolan suspensions

Mitsuuchi Tashima, Mauro; Soriano Martínez, Lourdes; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Akasaki, Jorge Luis; Paya Bernabeu, Jorge Juan (Consejo Superior de Investigaciones Científicas (CSIC), 2014-09)

A very simple method based on electrical conductivity and pH measurements was proposed for assessing reactivity of pozzolans. Calcium hydroxide:pozzolan water suspensions were monitored by means of measurements of electrical ...
New use of sugar cane straw ash in alkali-activated materials: a silica source for the prparation of alkaline activator

Moraes, J.C.B; Font-Pérez, Alba; Soriano Martinez, Lourdes; Akasaki, J.L.; Tashima, M.M.; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan (Elsevier, 2018-05-20)

[EN] Alkali silicates, expensive and highly pollutant chemical reagents, are required to produce the alkaline activator for high-performance alkali-activated materials. This study presents a new silica source for producing ...
Optimum use of sugar cane straw ash (SCSA) in alkali-activated binders based on blast furnace slag (BFS)

Moraes, J.C.B; Tashima, M.M.; Melges, J.L.P.; Akasaki, J.L.; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martinez, Lourdes; Paya Bernabeu, Jorge Juan (American Society of Civil Engineers, 2018-06)

[EN] Alkali-activated binders (AABs) are a material obtained from the combination of a solid precursor and an alkaline activating solution. In this study, one solid precursor used was blast-furnace slag (BFS) and the other ...
Performance of mortars produced with the incorporation of sugar cane bagasse ash

Macedo, P.C.; Pereira, A.M.; Akasaki, Jorge Luis; Fioriti, César Fabiano; Paya Bernabeu, Jorge Juan; Pinheiro Melges, Jose Luis (2014)

[ES] Este trabajo presenta la factibilidad técnica de utilización de cenizas resultantes del proceso de la quema de bagazo de caña de azúcar, para la generación de energía como adición mineral en morteros. Se realizaron ...