Axial Compressive Performance of CFRP Confined Self-stressing High-strength Concrete Cylinders

2019 ◽  
Vol 23 (9) ◽  
pp. 4000-4009
Author(s):  
Qi Cao ◽  
Xiaojun Li ◽  
Rongxiong Gao
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Concrete Cylinders ◽  
Compressive Performance

Size effect for high-strength concrete cylinders subjected to axial impact

2003 ◽  
Vol 28 (9) ◽  
pp. 1001-1016 ◽  
Author(s):  
T. Krauthammer ◽  
M.M. Elfahal ◽  
J. Lim ◽  
T. Ohno ◽  
M. Beppu ◽  
...  
Keyword(s):  
Size Effect ◽  
High Strength Concrete ◽  
High Strength ◽  
Axial Impact ◽  
Strength Concrete ◽  
Concrete Cylinders

Strength and Ductility of High-Strength Concrete Cylinders Externally Confined with Steel Strapping Tensioning Technique (SSTT)

2014 ◽  
Vol 68 (1) ◽  
Author(s):  
Hoong-Pin Lee ◽  
Abdullah Zawawi Awang ◽  
Wahid Omar
Keyword(s):  
Compressive Strength ◽  
Prediction Model ◽  
High Strength Concrete ◽  
High Strength ◽  
Transverse Strain ◽  
Envelope Curve ◽  
Stress Strain ◽  
Strength Concrete ◽  
Concrete Cylinders ◽  
Strain Relationship

This research study is to introduce and investigate an effective technique of external pre-tensioning using steel strapping (SSTT) to reduce the brittleness and enhance the ductility of high-strength concrete cylinders.  Fifteen cylinders with dimension of 150 mm and 300 mm in diameter and height respectively were casted, pre-tensioned with two and four layers of steel strapping and tested to failure under uniaxial monotonic and cyclic compression. The behaviour of SSTT confined cylinders was studied through their stress-strain relationship upon the longitudinal deflection, transverse strain, mode of failure, confinement ratio, and existence of an envelope curve. It is experimentally proved that SSTT confinement do helps in controlling the brittleness problem of high-strength concrete and at the same time, enhancing both the concrete ductility and compressive strength up to 46.2 % and 112.5 % respectively. The envelope curve of uniaxial cyclic loading also coincides with the corresponding monotonic loading curve, regardless of any loading activity. The observed stress-strain relationship of confined cylinders with different confining ratios are compared with existing strength and strain models and a stress-strain prediction model, the result showed a linear relationship between the compressive strength and strain enhancement and confining ratio, with acceptable agreement between the prediction model.

scholarly journals Dynamic Tests of High Strength Concrete Cylinders

2012 ◽  
Author(s):  
A. M. Weidner ◽  
C. P. Pantelides ◽  
W. D. Richins ◽  
T.
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Dynamic Tests ◽  
Strength Concrete ◽  
Concrete Cylinders

scholarly journals Reactivity Index and Strength Development of High Strength Concrete with GGBFS Cement

2020 ◽  
Vol 9 (10) ◽  
pp. 406-412
Keyword(s):  
High Strength Concrete ◽  
Concrete Strength ◽  
High Strength ◽  
Cement Industry ◽  
Reactivity Index ◽  
Strength Development ◽  
Slag Cement ◽  
Strength Concrete ◽  
Concrete Mixtures ◽  
Concrete Cylinders

The slag cement industry in Indonesia is growing in tandem with the smelter industry as a supplier of slag material. The use of slag cement instead of ordinary cement can reduce CO2 emissions. This research aimed to design the mixture composition of slag cement and ordinary cement for highstrength concrete. Standard concrete cylinders and concrete beams were tested to gain the compressive, tensile and flexural strength. The testing results indicate that generally, the concrete mixture compositions of low GGBFS (25%) gained their optimum strength at the age of 28 days while concrete with high composition of GGBFS (55%) achievedsimilar strength at the age of 90 days.A mixture using higher percentage replacement of GGBFS might attain its optimum strength at the longer ages. The use of Silica Fume (SF) in high-strength concrete mixtures with GGBFS found ineffective to increasethe concrete strength as the results indicate that concretes with SF have lower strength compared with non-SF concrete mixtures.

scholarly journals BEHAVIOR OF HIGH-STRENGTH CONCRETE CYLINDERS REPAIRED WITH CFRP SHEETS

2015 ◽  
Vol 22 (1) ◽  
pp. 56-64 ◽  
Author(s):  
Mohammad PANJEHPOUR ◽  
Nima FARZADNIA ◽  
Ramazan DEMIRBOGA ◽  
Abang Abdullah Abang ALI
Keyword(s):  
High Strength Concrete ◽  
Empirical Relationship ◽  
High Strength ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Strength Concrete ◽  
Cfrp Sheets ◽  
Reinforced Polymer ◽  
Concrete Cylinders ◽  
Cfrp Sheet

This study aims to investigate the behavior of damaged high-strength concrete cylinders repaired using carbon fiber reinforced polymer (CFRP) sheet. The experimental work on CFRP-wrapped concrete cylinders with various predamage levels indicated that CFRP can precisely resist the axial aggravated deformation of cylinders caused by damaging under uniaxial loading. The findings also revealed that the energy absorption of the damaged specimens confined with CFRP was restored approximately three times more than that of the undamaged specimens without confinement. Therefore, an empirical relationship exists between the pre-damage levels and the uniaxial compressive strength reduction of the concrete cylinders.

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