CONCRETE BEAMS REINFORCED WITH GFRP STAY-IN-PLACE FORMWORK
A new design of concrete beams reinforced with glass fiber-reinforced polymer(GFRP)stay-in-place structural formwork was tested.The main purpose of this study was to completely replace the conventional steel reinforcement with a GFRP stay-in-place pultruded formwork as skin reinforcement.A total of 7 beams were fabricated using these forms.While all the beams had the same length and cross-sectional dimensions,the reinforcement ratio and the type of GFRP splice varied.Initially,five beams with the same length and reinforcement ratio were compared.Three of these beams were mechanically spliced at mid-height using self-drilling screws at various spacing,one was spliced using adhesive,and another specimen was not spliced and was used as the control specimen.The specimen with smallest screw spacing reached a load of about 8%lower than the control specimen and 4%lower than the one with adhesively bonded splice.Also,its deflection was slightly smaller compared to the control and adhesive specimen,at 14%and 7%,respectively.The effect of the adhesive splice was further investigated on the last two specimens having the same size but higher reinforcement ratios than the first group of beams.The specimen with higher reinforcement ratio spliced with adhesive at mid-height had an 8%lower peak load and 30%less deflection than its equivalent control specimen.Overall the failure modes were governed by splice failure,concrete crushing,local buckling of the FRP plate under the load or tension failure of the plate.
GFRP stay-in-place form beam splice adhesive mechanical connectors concrete
Valon Sylaj Amir Fam
Student Department of Civil Engineering,Queens University,Kingston,Canada (Research and Graduate Studies),Donald and Sarah Munro Chair in Engineering and Applied Science,Depa
国际会议
新加坡
英文
1-5
2017-07-19（万方平台首次上网日期，不代表论文的发表时间）