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Pro091

STUDY ON THE EFFECT PARTICLE SIZE DISTRIBUTION AND BLAINE FINENESS ON THE HYDRATION OF CEMENT



Author(s): Shiju Joseph, Shashank Bishnoi
Book Title: RILEM International Symposium on Concrete Modelling - CONMOD 2014
Editor: Kefei Li, Peiyu Yan and Rongwei Yang
ISBN: 978-2-35158-139-1
e-ISBN: 978-2-35158-140-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 61-68
Total Pages: 8
Language: English


Abstract: While Blaine’s fineness has been traditionally used to measure the fineness of cements, laser diffractometry is being increasingly used to measure its particle size distribution. These measurements are often used to understand and model the hydration of cement, strength development, etc. Although laser diffractometry results are usually directly used in these studies, the particle sizes are often truncated to control computational costs. Results from Blaine’s fineness are often converted to discrete particle size distributions using various equations involving the mode diameter and range of particle sizes. Both techniques, thus, require assumptions that may affect the final results and inferences from models. Numerical simulations are used in this article to study the effect of various assumptions made while using fineness and particle size distribution on hydration kinetics and development of microstructure. The results from this study shows that significant reduction in computational effort is possible without compromising the accuracy on truncation of the particle size distribution used in modelling.


Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00