Abstract
abstract: Shear design models in reinforced concrete structures depend on stress transfer through cracks. Such mechanism is influenced by the displacement and roughness of the opposite faces generated during cracking. Shear is reduced when an aggregate particle is fractured leading to a smoother crack as found in lightweight and high strength concrete. This study evaluated the ultimate shear strength of sand-lightweight and conventional high strength concrete as well as the differences in their behavior. Results from Pereira and Soares with 29 push-off test specimens were used. Transverse clamping stress ranged from 4.79 to 12.71 MPa while fcm was 30 and 50 MPa. The experimental results showed significant differences in the concrete studied. A tri-linear model was proposed to calculate the ultimate shear strength. An overall mean value of τu, exp/τu, cal was 0.96.
Highlights
Proposed by Birkeland and Birkeland [1] in 1966, the shear-friction theory is an approach that aims to evaluate the transfer of shear forces in concrete-concrete interfaces submitted at the same time by compression and shear stresses
Direct shear tests were performed on push-off specimens for this purpose
After evaluating the ultimate shear strength results obtained experimentally, comparisons were made with analytical models proposed by previous researchers and the code ACI 318 [14]
Summary
Proposed by Birkeland and Birkeland [1] in 1966, the shear-friction theory is an approach that aims to evaluate the transfer of shear forces in concrete-concrete interfaces submitted at the same time by compression and shear stresses.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
