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11. The effect of coating thickness on aggregate on the property of SCC by Fuller’s ideal curve and error function



Title: 11. The effect of coating thickness on aggregate on the property of SCC by Fuller’s ideal curve and error function
Author(s): C.L. Hwang, S.L. Hsieh, Y.Y. Chen
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 83 - 88
Total Pages: 6
Nb references: 20
Language: English


Abstract: The main theme of this study is to design the SCC mixture via Fuller’s gradation curve as well as minimum coating thickness. Such theoretical method is more practical than previous finding of Densified Mixture Design Algorithm (DMDA) for HPC with the least cement and water content. The Fuller’s gradation curve and error function are applied to find the theoretical blended ratio of all solid materials down to nano-size particles. The surface area of aggregate is calculated by assuming spherical aggregate particles to simplify the calculation. Then, the void of paste (Vv) and the paste content with specific quality can be estimated. At the end the physical properties including fresh and hardened stages are used as a basis to select the optimal and proper thicknesses of paste for SCC to avoid bleeding and segregation problems. The result indicates that the thinner the coating thickness on aggregate the better the long-term property.


Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00