Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing

Table 1

Details of column specimens.

#	Description		Notation	Column core (mm)	Overall cross section (mm)	Jacket thickness (mm)	Number of samples
1	UC unjacketed reference column		UC	100 × 100	Cross-sectional dimensions of UC and MC reference columns are fixed		3
2	MC monolithically cast reference columns		MC1	150 × 150			3
3			MC2	170 × 170			3
4	NSC-4.75 jacket, [A-B]	Roughening surface by mechanical wire brushing	A-W	100 × 100	150 × 150	25	3
5			B-W	100 × 100	170 × 170	35	3
6		Roughening surface by mechanical scarification	A-C	100 × 100	150 × 150	25	3
7			B-C	100 × 100	170 × 170	35	3
8		Bonding by using shear studs	A-S	100 × 100	150 × 150	25	3
9			B-S	100 × 100	170 × 170	35	3
10	UHPFRSCC jacket, [X-Y]	Roughening surface by mechanical wire brushing	X-W	100 × 100	150 × 150	25	3
11			Y-W	100 × 100	170 × 170	35	3
12		Roughening surface by mechanical scarification	X-C	100 × 100	150 × 150	25	3
13			Y-C	100 × 100	170 × 170	35	3
14		Bonding by using shear studs	X-S	100 × 100	150 × 150	25	3
15			Y-S	100 × 100	170 × 170	35	3