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COMPUTER SIMULATION OF THE PACKING OF DIGITIZED REACTIVE MAGNESIA PARTICLES



Author(s): Mingzhi Wang, Abir Al-Tabbaa
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: 36-43
Total Pages: 8
Language: English


Abstract: Reactive magnesia cement can gain significant strength through its hydrationcarbonation processes, providing a novel and green construction material. Various factors influence the hydration and subsequent carbonation of reactive magnesia within a porous structure, including interaction between the solid, gas and liquid phases, making it more difficult to model than the traditional Portland cement system. The simulation of particle packing can generate realistic microscopic modelling of the porous structure of cement particles, which can be used in further simulation of the hydration-carbonation processes. In this paper, Cellular Automata (CA) technique was applied to construct the initial structure generating program as the first stage of further simulation of reactive magnesia cement. This digitized particle packing simulation program provides well-matched results to the previous experiment and simulation results from the science of particle packing compared with previous models using the method random sequential addition (RSA). Additionally, some special features of the packing of digitized particles were observed through different simulations, providing impetus for further study.


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


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