MICROSTRUCTURE-BASED PREDICTION OF THERMAL PROPERTIES OF CEMENT PASTE AT EARLY AGES

Author(s): Hadi Mazaheripour (1), Amin Abrishambaf (1) , Rui Faria (1), Miguel Azenha (2), Guang Ye (3)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 743-48
Total Pages: 6
Language : English

Abstract: The time-dependent process of cement hydration affects many physical and mechanical properties of the cement-based materials, particularly at early ages. To estimate the thermomechanical response of cementitious composites, such as concrete, determination of thermal properties, including heat capacity, thermal conductivity and coefficient of thermal
expansion, are necessary. An effort is made in the present study to predict the thermal behaviour of cement pastes by simulating the development of the microstructure during the hydration progress. The model deals with the thermal properties of main cement hydration products, Calcium-Silicate-Hydrate (C-S-H) and Calcium Hydroxide CH, and the change in their volume fraction in the microstructure. The paper discusses the results of thermal conductivity and the specific heat capacity from the model, and they are compared to some recent experimental data from the literature.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00