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Browsing by Subject "Alkali-activated cement"

Now showing items 1-8 of 8

Biomass ashes to produce an alternative alkaline activator for alkali-activated cements

Soriano Martinez, Lourdes; Font, A.; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Paya Bernabeu, Jorge Juan; Tashima, M. M. (Elsevier, 2022-02-01)

[EN] In the last decade, herbaceous and agricultural biomass have been used as an alternative energy source. As consequence, large amounts of residual ashes containing potassium (potassium-rich ashes) have been generated. ...
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 ...
Design and properties of 100% waste-based ternary alkali-activated mortars: blastfurnace slag, olive-stone biomass ash and rice husk ash

Font-Pérez, Alba; Soriano Martinez, Lourdes; Pinheiro, Sayonara Maria de Moraes; Tashima, Mauro M.; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan (Elsevier, 2020-01-10)

[EN] Alkali-activated cements (AACs) technology is being widely investigated as a replacement for ordinary Portland cement (OPC) for environmental benefits. Blast furnace slag (BFS) is one of the most well known precursors ...
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 ...
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 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 ...
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 ...
Stabilization of soil by means alternative alkali-activated cement prepared with spent FCC catalyst

Cosa-Martínez, Juan; Soriano Martinez, Lourdes; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª (Blackwell Publishing, 2020-02)

[EN] Alkali-activated cements are widely studied as alternative and sustainable binder in soil stabilization. In this research work, a mold was designed and constructed, which allowed small cubic specimens to be made (40 ...