Creep Modeling of Self-Consolidating Concrete with High Volumes of Supplementary Cementitious Materials

Author(s): Katie Kuder, Dawn Lehman, Jie Chen, Charles Roeder, Laura Lowes
Paper category: Conference
Book Title: 8th International RILEM Symposium on Self-Compacting Concrete - SCC 2016
Editor: Kamal H. Khayat
ISBN: 978-2-35158-156-8
e-ISBN: 978-2-35158-157-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 365-374
Total Pages: 10
Language: English

Abstract: This research investigates the elastic modulus, compressive strength and creep in concrete mixes with high volumes of fly ash and slag (up to 90% replacement). The EC2 model is modified to include time dependent expressions for the compressive strength and elastic modulus based on the binder ratio CaO/(SiO2+Al2O3). Using these expressions, the EC2 model was found to overestimate creep deformations and creep coefficients of SCM concrete. It is hypothesized that this overestimation is due to the fact that some of the SCMs remain unreacted and act like inert filler providing higher resistance to creep. The EC2 model was further modified to include the C/(S+A) binder ratio and water/binder ratio. The results show good agreement between the model and experimental data for SCC mixes with up to 90% cement replacement.

Online publication: 2016
Publication Type: full_text
Public price (Euros): 0.00