Behavior of Small-Scale Concrete Cylinders in Compression Laterally Confined by Basalt Fiber and PEN Fiber Reinforced Polymer Composites

International Journal of Concrete Structures and Materials

Table 4 Type and number of tests: main and additional confinement tests.

Test program	Type	No. of cylinders	No. of FRP layers
Main confinement test	Control	3	–
	BFRP wrap	9	2, 4, 6
	PEN FRP wrap	9	1, 2, 3
Additional confinement test	Control PEN FRP wrap	1 3	– 2

1. Three replicate specimens for each test variable in main confinement test; 2. in additional confinement test, the test variable was varying overlap length for 2 layers of PEN FRP confinement: overlap length = nil, 50 mm, 150 mm.