Quantitative Comparison of Binary Mix of Agro-Industrial Pozzolanic Additions for Elaborating Ternary Cements: Kinetic Parameters

Author(s)

Villar-Cocina, Ernesto ^[1] ; Frias, Moises ^[2] ; Savastano, Holmer ^[3] ; Rodier, Loic ^[3] ; Sanchez de Rojas, Maria Isabel ^[2] ; Saez del Bosque, Isabel Fuencisla ^[4] ; Medina, Cesar ^[4]

Affiliation

^[1] Cent Univ Las Villas, Dept Phys, Santa Clara 54830 - Cuba

^[2] CSIC, Mat Recycling Dept, Eduardo Torroja Inst, C Serrano Galvache 4, Madrid 28033 - Spain

^[3] Univ Sao Paulo, Res Nucleus Mat Biosyst, POB 23, BR-13635900 Pirassununga, SP - Brazil

^[4] Univ Extremadura, Inst Sustainable Reg Dev INTERRA, Dept Construct, Avda Univ S-N, Caceres 10003 - Spain

• Document type: Journal article
• Source: MATERIALS; v. 14, n. 11 JUN 2021.
• Web of Science Citations: 0

Abstract

In this research work, the quantitative characterization of a binary blend comprised of two pozzolans (sugar cane straw (SCSA)-sugar cane bagasse ashes (SCBA), bamboo leaf ash (BLAsh)-SCBA and paper sludge (PS)-fly ash (FA)) taking into account the calculated values of the kinetic parameters of the reaction in the pozzolan/calcium hydroxide system is shown. The paper shows the most significant and important results obtained by the authors in the quantitative assessment (calculation of kinetic parameters) of the pozzolanic reaction of different mixtures of pozzolanic materials that are residues from agriculture or industrial processes. This allows a direct and rigorous comparison of the pozzolanic activity of the binary combinations of materials. The values of the kinetic parameters (reaction rate constant or activation free energy) constitute a very precise quantitative index of the pozzolanic activity of the binary combinations of materials, which is very useful for its employment in the elaboration of ternary cements. This paper shows that the binary blends 1SCBA60Blash40, 1SCBA50Blash50, 1SCBA70Blash30 have a very high pozzolanic reactivity followed by PSLSFA, 2SCBA50SCSA50, PSISFA and SCWI. (AU)

• FAPESP's process: 11/16842-5 - Waste ashes from the burning of the elephant grass (Pennisetum purpureum) as pozzolanic material for the partial substitution of the ordinary Portland cement
• Grantee: Erika Yukari Nakanishi
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 13/50790-8 - Non conventional cement-based materials developed with industrial wastes as a contribution for a more sustainable industry
• Grantee: Holmer Savastano Junior
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/12691-2 - Collaboration and advising in activities related with research projects in progress: topic: characterization and evaluation of agricultural wastes as pozzolanic materials for its efficient use in the production of sustainable construction materials
• Grantee: Holmer Savastano Junior
• Support Opportunities: Research Grants - Visiting Researcher Grant - International