TY  - JOUR
AV  - none
TI  - Axial compressive strength models of eccentrically-loaded rectangular reinforced concrete columns confined with frp
ID  - scholars14783
KW  - Aspect ratio; Compressive strength; Concrete construction; Fiber reinforced plastics; Stress-strain curves
KW  -  Axial compressive strength; Eccentric compression; Eccentrically loaded; Fiber reinforced polymers; Frp confined concrete columns; Rectangular RC columns; Reinforced concrete column; Strain distributions
KW  -  Fiber reinforced concrete
N2  - The majority of experimental and analytical studies on fiber-reinforced polymer (FRP) confined concrete has largely concentrated on plain (unreinforced) small-scale concrete columns, on which the efficiency of strengthening is much higher compared with large-scale columns. Although reinforced concrete (RC) columns subjected to combined axial compression and flexural loads (i.e., eccentric compression) are the most common structural elements used in practice, research on eccentrically-loaded FRP-confined rectangular RC columns has been much more limited. More specifically, the limited research has generally been concerned with small-scale RC columns, and hence, the proposed eccentric-loading stress-strain models were mainly based on the existing concentric-loading models of FRP-confined concrete columns of small scale. In the light of such demand to date, this paper is aimed at developing a mathematical model to better predict the strength of FRP-confined rectangular RC columns. The strain distribution of FRP around the circumference of the rectangular sections was investigated to propose equations for the actual rupture strain of FRP wrapped in the horizontal and vertical directions. The model was accomplished using 230 results of 155 tested specimens compiled from 19 studies available in the technical literature. The test database covers an unconfined concrete strength ranging between 9.9 and 73.1 MPa, and sectionâ??s dimension ranging from 100â??300 mm and 125â??435 mm for the short and long sides, respectively. Other test parameters, such as aspect ratio, corner radius, internal hoop steel reinforcement, FRP wrapping layout, and number of FRP wraps were all considered in the model. The performance of the model shows a very good correlation with the test results. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
IS  - 13
N1  - cited By 7
PB  - MDPI AG
SN  - 19961944
Y1  - 2021///
VL  - 14
A1  - Isleem, H.F.
A1  - Abid, M.
A1  - Alaloul, W.S.
A1  - Shah, M.K.
A1  - Zeb, S.
A1  - Musarat, M.A.
A1  - Javed, M.F.
A1  - Aslam, F.
A1  - Alabduljabbar, H.
JF  - Materials
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110074496&doi=10.3390%2fma14133498&partnerID=40&md5=b75153c807eb2ef12abd8a5c6bc4a615
ER  -