Comparative Study of Models for Porosity of Cement Paste

Author(s): Shatabdi Mallick, Anoop M. B. and Balaji Rao K.
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 492-501
Total Pages: 10
Language : English

Abstract: The complex microstructure of hydrating cement paste, comprises of the solid hydration products (primarily calcium silicate hydrate, CSH), unhydrated clinkers and the pore structure of cement paste. Studies on porosity in cement paste are fundamental in understanding the microstructural development and in understanding mechanical and durability properties of concrete. In the present study, a detailed review of existing models for pore structure characterization in cement paste has been carried out. The predictions of capillary porosity and gel porosity using different models are compared with the experimental data on porosity of cement paste reported in literature, and the values of modelling error associated with the models are determined. A sensitivity analysis study is carried out to identify the parameters that have the largest influence on porosity. Finally, an attempt is made to understand the implications of the pore structure on the creep of concrete.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00