An Experimental Study on Concrete Flat Slabs Prestressed with Carbon Fibre Reinforced Polymer Sheets

Table 2

List of the control parameters for tensioning.

Elastic modulus of the CFRP sheet	GPa
Tensile strength	= 3,550 MPa
Cross section	= 0.12 mm × 100 mm = 12 mm^2
Minimum control tensioning stress	= 0.5 = 0.5 × 3,550 = 1775 MPa
Minimum control tensioning strain	= 1,775/(220 × 10) = 0.008068
Minimum control tension	= = 1,775 × 12 = 21300 N = 21.3 kN
Maximum control tensioning stress	= 0.8 = 0.8 × 3,550 = 2,840 MPa
Maximum control tensioning strain	= 2,840/(220 × 10) = 0.012909
Maximum control tension	= = 2,840 × 12 = 34.08 kN