Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
MEASUREMENT OF FRESH CONCRETE COMPONENTS USING ELECTRICAL IMPEDANCE
Submission Author:
Marcos Roberto Fortulan , SP
Co-Authors:
Marcos Roberto Fortulan, Francisco Julio do Nascimento, Oscar Mauricio Hernandez Rodriguez
Presenter: Marcos Roberto Fortulan
doi://10.26678/ABCM.COBEM2023.COB2023-2412
Abstract
The influence of concrete components on its the strength and durability, has been a recurring theme in the scientific community, where researchers have directed efforts to determine its composition in the preparation stage (fresh concrete). This measurement could improve the control of the concrete quality, impacting on the cost (without need to overestimation) and safety. The present work aims to correlate the electrical impedance components of the concrete mixture to its component’s fractions (water to cement ratio – w/c; cement fraction – c and water fraction – w). During these experiments, 34 different traits of concrete mixtures were evaluated in order to stablish the best frequencies for the measurement and correlations aiming to predict, from electrical impedance measurement of the concrete mixture, the real fractions of the concrete components. The correlations performed as follows: 82% of the collected data within the error of ±10% for the water to concrete (w/c) ratio, 91% within the error of ±10% for the cement fraction (c) and 97% within the error of ±10% for the water fraction (w).
Keywords
multiphase instrumentation, electrical impedance, concrete resistance
