Performance of Two-way RC Slabs Retrofitted by Different Configurations of High Performance Fibre Reinforced Cementitous Composite Strips

Table 4: Load-deflection response parameters of slabs at cracking and steel bar’s yielding strengths.

Retrofit Configuration	HPFRCC Strip Type	Cracking		Initial Stiffness, K_i (kN/mm)	Increase in K_i (%)	Yielding
Retrofit Configuration	HPFRCC Strip Type	P_cr (kN)	Δ_cr (mm)	Initial Stiffness, K_i (kN/mm)	Increase in K_i (%)	P_y (kN)	Δ_y (mm)
Control No.1	-	36	1.48	24.36	-	73	8.26
Control No.2	-	33	1.50	21.86	-10.3	107	13.78
Type D	2-way NSM	50	1.54	32.47	33.3 (48.5)¹	86	7.83
Type E	2-way EBR	43	1.52	28.29	16.1 (29.4)¹	71	7.01
Type F	1-way NSM + 1-way Precast	86	1.47	58.50	140.2 (167.6)¹	103	5.67

1. Values in respect to control slab No.2 in parenthesis.