Modeling of hydration of Portland Cements incorporating supplementary cementing materials

Title: Modeling of hydration of Portland Cements incorporating supplementary cementing materials
Author(s): K. Park, H. Lee, X. Wang
Paper category : conference
Book title: International RILEM Symposium on Concrete Modelling - ConMod '08
Editor(s): E. Schlangen and G. De Schutter
Print-ISBN: 978-2-35158-060-8
e-ISBN: 978-2-35158-076-9
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 419 - 427
Total Pages: 9
Nb references: 16
Language: English

Abstract: Supplementary cementing materials (SCM), such as silica fume (SF) and low-calcium fly ash (FL), have been widely used as mineral admixtures in high strength and high performance concrete. Due to the pozzolanic reaction between calcium hydroxide and SCM, compared with ordinary Portland cement, hydration process of cement incorporating SCM is much more complex. This paper presents a numerical hydration model which is based on multicomponent concept and can simulate hydration of cement incorporating SCM. The proposed model starts with mixture proportion of concrete and considers both Portland cement hydration reaction and pozzolanic activity. Using this proposed model, this paper predicts the following properties of hydrating cement-SCM blends as function of hydration time: reaction ratio of SCM, calcium hydroxide content, heat evolution, porosity, chemically bound water and the development of the compressive strength of concrete. The prediction results agree well with experiment results.

Online publication: 2009-06-15
Publication type : full_text
Public price (Euros): 0.00