Prediction of Mechanical Properties of Self-Consolidating Concrete for Cast-in-Place Bridge Construction

Author(s): Micheal Asaad, George Morcous, Xuhao Wang, Peter Taylor, Kejin Wang
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: 341-351
Total Pages: 11
Language: English

Abstract: This paper presents the results of testing the mechanical properties of self-consolidating concrete (SCC) and developing prediction models for these properties. A laboratory investigation of 40 different SCC mixtures proportioned for cast-in-place (CIP) bridge applications with 28-day compressive strength ranging from 27.5 - 55.0 MPa (4.0-8.0 ksi) was conducted. Workability tests were conducted for all mixtures to evaluate their filling ability, passing ability and stability. Compressive strength at 7, 14, 28, and 56 days, tensile splitting strength, modulus of rupture, modulus of elasticity, and interface shear strength at 28 days were measured. Testing results were compared against the ACI 209 compressive strength development prediction model and AASHTO LRFD prediction models of conventionally vibrated concrete (CVC). Comparison indicated that ACI 209 model presents an accurate prediction of SCC compressive strength development. The AASHTO LRFD provisions also provide an adequate prediction for SCC modulus of rupture. However, the AASHTO LRFD models overestimate modulus of elasticity, splitting tensile strength, and interface shear strength of SCC. New coefficients were proposed to accurately predict these properties.

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