Stiffness Analysis of Recycled Self-Compacting Concrete-Filled Circular Steel Tubular Columns under Eccentric Compression
Table 1
Parameters of RSCFCST columns.
Specimen ID
(mm)
(mm)
(mm)
(%)
(mm)
Concrete number/grade
RSCSE-1
140
3.63
500
0
20
0.3
3.57
S1/C30
819
RSCSE-2
140
3.63
500
0
40
0.6
3.57
S1/C30
603
RSCSE-3
140
3.63
500
0
60
0.9
3.57
S1/C30
512
RSCSE-4
140
3.63
500
50
20
0.3
3.57
S2/C30
776
RSCSE-5
140
3.63
500
50
40
0.6
3.57
S2/C30
557
RSCSE-6
140
3.63
500
50
60
0.9
3.57
S2/C30
457
RSCSE-7
140
3.63
500
100
20
0.3
3.57
S3/C30
761
RSCSE-8
140
3.63
500
100
40
0.6
3.57
S3/C30
552
RSCSE-9
140
3.63
500
100
60
0.9
3.57
S3/C30
441
RSCSE-10
140
3.63
500
100
20
0.3
3.57
S4/C50
893
RSCSE-11
140
3.63
500
100
40
0.6
3.57
S4/C50
670
RSCSE-12
140
3.63
500
100
60
0.9
3.57
S4/C50
504
RSCSE-13
140
3.63
500
100
20
0.3
3.57
S5/C60
898
RSCSE-14
140
3.63
500
100
40
0.6
3.57
S5/C60
672
RSCSE-15
140
3.63
500
100
60
0.9
3.57
S5/C60
585
RSCSE-16
140
3.63
1000
100
20
0.3
7.14
S4/C50
883
RSCSE-17
140
3.63
1000
100
40
0.6
7.14
S4/C50
604
RSCSE-18
140
3.63
1000
100
60
0.9
7.14
S4/C50
481
RSCSE-19
140
3.63
1500
100
20
0.3
10.71
S4/C50
748
RSCSE-20
140
3.63
1500
100
40
0.6
10.71
S4/C50
518
RSCSE-21
140
3.63
1500
100
60
0.9
10.71
S4/C50
408
Note. is the outer diameter of steel tube; and are the measured thickness and length of the steel tube, respectively; is the replacement ratio of RCA; is the eccentricity of specimen; is the radius of RSC; is the eccentricity ratio; is the length-diameter ratio of specimen; is the ultimate load of the specimen.
