Open AccessBehavior of Confined Concrete using Prestressing Skew Bars
Author(s) -
Awad Mohamed ElHashimy,
AUTHOR_ID,
Ali A. Abbas,
AUTHOR_ID
Publication year - 2022
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.c3354.0211322
Subject(s) - compressive strength , prism , materials science , bar (unit) , skew , young's modulus , structural engineering , elasticity (physics) , composite material , compression (physics) , ductility (earth science) , modulus , elastic modulus , optics , geology , engineering , physics , telecommunications , oceanography , creep
This paper presents the results of an experimental study on the biaxial compression behavior of concrete prism confined using pre-stressed bars. The pre-stressed bars could provide passive confinement stress, that preventing the lateral strain of the prism from increasing leading to an increase in both the initial modulus of elasticity and prism compressive strength. The confined concrete had a higher compressive strength that was directly proportional to the confinement bar pressing force and lower ductility than the plain prisms. The concrete initial modulus of elasticity is directly proportioned to the confinement lateral pressure of the prestressing bar and inversely proportion with the spacing between prestressing bars. It was simple to find out that the best pre-stressing stress was 10 N/mm2, also the compressive strength of the confined concrete with pre-stressed skew bars was greater than the compressive strength of the unconfined concrete by more 3.3 times.