Behavior of Hollow Thin Welded Tubes Filled with Sand Slag Concrete

Table 5

Experimental results of composite columns.

Concrete type	Specimen	Height (mm)	(mm)	Eccentricity (mm)	Nue (kN)
BO	PA1-1	300	100.20 × 70.10 × 2.30	0	341
	PB1-2	300	99.90 × 68.75 × 2.20	20	320
	PA1-3	500	99.50 × 69.10 × 2.20	0	330
	PB1-4	500	99.55 × 68.75 × 2.20	20	315
BSI	PA2-1	300	99.75 × 69.50 × 2.20	0	385
	PB2-2	300	99.62 × 68.06 × 2.20	20	359
	PB2-3	300	99.62 × 69.55 × 2.25	20	363
	PA2-4	500	99.91 × 69.13 × 2.30	0	368
	PB2-5	500	98.58 × 69.75 × 2.15	20	353
	PB2-6	500	99.37 × 69.10 × 2.20	20	357
BSII	PA3-1	300	99.72 × 68.50 × 2.30	0	374
	PB3-2	300	99.82 × 69.55 × 2.20	20	351
	PB3-3	300	98.37 × 69.10 × 2.20	20	349
	PA3-4	500	100.50 × 68.55 × 2.30	0	365
	PB3-5	500	100.63 × 68.75 × 2.30	20	344
	PB3-6	500	98.60 × 69.85 × 2.30	20	341