Analysis of the Portland cement hydration processes containing ash from agro-industrial residues: impedance spectroscopy (EIS) combined with electron microscopy in liquids (WetSEM)

• Grant number: 20/16325-0
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2022
• End date: February 29, 2024
• Field of knowledge: Engineering - Civil Engineering - Construction Industry
• Principal Investigator: Jorge Luís Akasaki
• Grantee: Jorge Luís Akasaki
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
• Associated researchers: Alex Otávio Sanches ; Mauro Mitsuuchi Tashima

Abstract

This project proposes the use of the EIS technique combined with WetSEM for studyng Portland cement kinetics hydration containing ashes from agro-industrial residues. The project aims to study and categorize the mechanisms that govern the physico-chemical kinetics of hydration, phases formation/transformation and porous constitution of the Portland cement and Portland cement with sugarcane bagasse, rice and bamboo ashes correlating them by means of electrical measurements (EIS) and imaging (WetSEM). The joint use of the techniques aims, in an innovative way, to individualize the electrical behavior of both the cement phases, as well as the influence of the ash in its constitution in impedance curves, a fact that has not yet been developed. In addition to the innovative aspects mentioned, this also has an important factor in addressing a problem on a global scale, through the use of agro-industrial waste, aiming at an appropriate disposal for these, in addition to adding an important technological characteristic to Portland cement. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BORDAN ISTUQUE, DANILO; SANCHES, ALEX OTAVIO; BORTOLETTO, MARCELO; MALMONGE, JOSE ANTONIO; SORIANO, LOURDES; VICTORIA BORRACHERO, MARIA; PAYA, JORDI; TASHIMA, MAURO M.; LUIS AKASAKI, JORGE. Impedance Spectroscopy as a Methodology to Evaluate the Reactivity of Metakaolin Based Geopolymers. MATERIALS, v. 15, n. 23, p. 19-pg., 2022-12-01. (20/16325-0, 13/07296-2)