Economical and Technical Comparison of Steel Bonding and CFRP

economic and technical comparison of bonding steel method and carbon fiber(CFRP) strengthening reinforcement concrete beams

Economic and technical comparison of bonding steel method and carbon fiber(CFRP) strengthening reinforcement concrete beams

bonding steel method

carbon fiber(CFRP) strengthening reinforcement

Item	Steel Plate Bonding	CFRP Strengthening	Remarks
Ease of construction	Generally simple	Simple
Construction site space requirements	Low	Lower
Construction period	Short	Shorter
Whether wet work	No	No
Increased component bearing capacity	High	High
Increased component stiffness	Lower	Low
The effect of making up cracks	General	Better
The effect of reinforcement on the appearance, shape and weight of the original components	Have some influence	Basically does not affect
Applicability to the outer contour of special-shaped components	Poor	Better
Requirements on the surface of the substrate to be reinforced	High	High
Impact on production and life	Have some influence	Basically does not affect
Resistant to acid, alkali, salt and atmospheric corrosion	Poor	Better
Requirements for structural adhesive performance, environmental corrosion, etc.	High	High
Effective bonding surface saturation	High	Higher
Fire resistance and high temperature resistance	Poor	General	Depends on the performance of structural adhesive
Stress hysteresis	More obvious	Obvious
Seismic performance (mainly component ductility)	Good	Good
Construction cost (economical)	Cheap	Slightly more expensive
Requirements for the construction level of the construction unit	Higher	Higher
Daily maintenance costs	Higher	Lower