Improving the accuracy of mineral aggregate surface energy estimation based on goniometry

Goniometry is a low time-consuming technique used to determine contact angle of a variety of surfaces, which can be related to surface energy of materials and, therefore, to moisture susceptibility of asphalt mixtures. Given the importance of the technique, due to simplicity and wide range of applic...

Full description

Saved in:
Bibliographic Details
Published in:Road materials and pavement design 2023-03, Vol.24 (3), p.744-760
Main Authors: Tencio, Daybis, Baldi, Alejandra, Aguiar-Moya, José P., Elizondo-Salas, Ana-Luisa
Format: Article
Language:English
Subjects:
accuracy
Aggregates
Asphalt mixes
Contact angle
Factorial analysis
goniometry
Mineral aggregates
Moisture effects
quasi-equilibrium
roughness
Surface energy
Surface preparation
Surface roughness
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Goniometry is a low time-consuming technique used to determine contact angle of a variety of surfaces, which can be related to surface energy of materials and, therefore, to moisture susceptibility of asphalt mixtures. Given the importance of the technique, due to simplicity and wide range of applicability, it is essential to obtain reliable data, mainly for heterogeneous, rough surfaces, such as mineral aggregates. For this reason, this study focuses on reducing variability of contact angle data for surface energy determination of mineral aggregates, by controlling surface preparation, performing corrections due to surface roughness, reaching and measuring quasi-equilibrium for each drop. Based on factorial analysis, it was found that the factors that have a greater effect on contact angle values are the type of mineral aggregate and variables affecting the surface preparation of the samples. This study helps to ensure a more accurate determination of surface energy in mineral aggregates by means of goniometry.
ISSN:1468-0629
2164-7402
DOI:10.1080/14680629.2022.2043931