Shear characteristics and design for high strength self consolidating concrete Cams web jungen
Because the coarse aggregate content directly affects...
more To achieve adequate flow and stability characteristics, self-consolidating concrete (SCC) typically has higher paste and lower coarse aggregate volumes than conventional concrete (CC).
These high paste volumes may lead to increased creep, which can increase the concrete compressive strain in prestressed concrete members.
Self-consolidating concrete (SCC) typically has high cement paste volumes to achieve the desired fresh characteristics.The aggregate type, aggregate volume, and concrete strength were found to have significant effects on the aggregate interlock.Test results were used to propose new aggregate interlock models based on the modified compression field theory adopted in the AASHTO Load and Resistance Factor Design Specifications.This research performed 48 push-off tests to investigate the influence of SCC aggregate and paste volumes on the shear capacity and these results were compared with those obtained from similar CC samples.The variables included coarse aggregate type (river gravel and limestone), three coarse aggregate volumes for the SCC mixtures, and two target 16-h release strengths [34 and 48 MPa (5 and 7 ksi)].