نتایج جستجو برای: crimped steel fiber

تعداد نتایج: 209185  

Journal: :Circulation 1999
P Urban M Bednarkiewicz I Bruschweiler A Frangos

A48-year-old male saxophone player underwent successful PTCA to the left circumflex coronary artery (LCx) in 1992. At the time, a small aneurysm was noted before PTCA, just below the target stenosis. The patient stopped smoking and was treated for hypercholesterolemia and high blood pressure. In 1997, he developed recurrent grade II angina, and a bicycle stress test was positive. Repeat cathete...

2015
Imjong Kwahk Changbin Joh Jung Woo Lee

This study proposed a prediction formula for the torsional strength enabling to reflect the tensile strength of ultra high performance concrete (UHPC) beams based upon the thin-walled tube theory. The remarkable ductile behavior of UHPC can also be attributed to the steel fiber reinforcement. This feature must be considered to provide rational explanation of the torsional behavior of UHPC struc...

2009
Sashi K. Kunnath YeongAe Heo Jon F. Mohle

Recent advances in nonlinear analysis of reinforced concrete structures have been based primarily on fiber-based discretization of the member cross section at locations of expected inelastic action. However, the accuracy of a fiber-section model is almost entirely dependent on the ability of constitutive material models to represent the overall inelastic behavior of the member. The postyield re...

2015
Ji-Hua Zhu Liangliang Wei Miaochang Zhu Hongfang Sun Luping Tang Feng Xing

This paper investigates the deterioration of reinforced concrete with carbon fiber reinforced polymer (CFRP) anode after polarization. The steel in the concrete was first subjected to accelerated corrosion to various extents. Then, a polarization test was performed with the external attached CFRP as the anode and the steel reinforcement as the cathode. Carbon fiber reinforced mortar and conduct...

2016
M.C.GURU PRASAD Deva Naidu

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Concrete is the most widely utilized “manmade” material globally for construction in many developing countries in all types of civil engineering works. Also, concrete is an environmental friendly material and in areas of growing environment – relat...

2016
Bibo Yao Zhaoyao Zhou Liuyang Duan Zhiyu Xiao

Powder metallurgy (P/M) technique is usually used for manufacturing porous metal materials. However, some P/M materials are limitedly used in engineering for their performance deficiency. A novel 304 stainless steel P/M material was produced by a solid-state sintering of 304 stainless steel powders and 304 short stainless steel fibers, which were alternately laid in layers according to mass rat...

2006
Fabio Matta Antonio Nanni

The use of Fiber Reinforced Polymer (FRP) reinforcement is a practical alternative to conventional steel rebars in concrete structures subjected to aggressive environments. The solution is attractive for bridge deck and rail applications, as it eliminates corrosion of the steel reinforcement, which is the major instrument of degradation. Due to the peculiar physical and mechanical characteristi...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2015
M Ortiz-Morales J J Soto-Bernal C Frausto-Reyes S E Acosta-Ortiz R Gonzalez-Mota I Rosales-Candelas

Iron chromium oxide microspheres were generated by pulsed laser irradiation on the surface of two commercial samples of stainless steel at room temperature. An Ytterbium pulsed fiber laser was used for this purpose. Raman spectroscopy was used for the characterization of the microspheres, whose size was found to be about 0.2-1.7 μm, as revealed by SEM analysis. The laser irradiation on the surf...

2015

Carbon fiber reinforced polymers strengthen steel structural elements. These structural elements are normally subjected to static, dynamic and fatigue loadings during their life-time. CFRP laminate is commonly used structures under the subjected loads. A number of focused on the characteristics of CFRP sheets members under static, dynamic and fatigue loadings. is a gap in understanding the bond...

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