<P><B>Abstract</B></P> <P>The introduction of confining pressure is an effective method to improve both ductility and strength of concrete. To confine concrete, recently, fiber reinforced polymer (FRP) wire has been empl...
http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
https://www.riss.kr/link?id=A107697024
2018
-
SCOPUS,SCIE
학술저널
728-739(12쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>The introduction of confining pressure is an effective method to improve both ductility and strength of concrete. To confine concrete, recently, fiber reinforced polymer (FRP) wire has been empl...
<P><B>Abstract</B></P> <P>The introduction of confining pressure is an effective method to improve both ductility and strength of concrete. To confine concrete, recently, fiber reinforced polymer (FRP) wire has been employed because of several advantages, such as corrosion resistance, cost-effectiveness, and the ability to control the tightness of jackets during the installation process. In addition to experimental researches, confinement models need to be studied; in which, a factor affects directly to the accuracy of the models is dilation. This study aimed to investigate dilation behaviors and the effects of FRP wire jackets confinement on concrete. For this purpose, the uniaxial compression tests were conducted on twelve specimens by changing the number of FRP wire layers and the compressive strength of concrete. Experimental results illustrated that the FRP wire jackets provided higher confinement effects on concrete than FRP sheets. The dilation developed through three stages of compressive behaviors of confined concrete, i.e., the elastic, hardening, and damaged stages. Moreover, the test results indicated that the effects of the stiffness ratio for FRP wire jackets were different from these for FRP sheets. Additionally, to estimate the lateral-axial strain relation of concrete confined by FRP wire jackets, a dilation model was developed on the basis of a secant dilation ratio, which is the percentage of the lateral strain to axial strain. The experimental results and the model estimation demonstrated in a good agreement.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The dilation ratio of concrete confined by FRP wire jackets is investigated. </LI> <LI> The FRP wire confinement is more effective than the FRP sheet confinement. </LI> <LI> The stiffness ratio of the FRP jackets affects behaviors of confined concrete. </LI> <LI> The proposed dilation model describes three stages of dilation behavior. </LI> <LI> The proposed model well captures behaviors of concrete confined by FRP wire jackets. </LI> </UL> </P>