This is a repository copy of
Flexural creep of steel fiber reinforced concrete in the cracked
state
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White Rose Research Online URL for this paper:
http://eprints.whiterose.ac.uk/91897/
Version: Accepted Version
Article:
Garcia-Taengua, E, Arango, S, Marti-Vargas, JR et al. (1 more author) (2014) Flexural
creep of steel fiber reinforced concrete in the cracked state. Construction and Building
Materials, 65. pp. 321-329. ISSN 0950-0618
https://doi.org/10.1016/j.conbuildmat.2014.04.139
© 2014, Elsevier. Licensed under the Creative Commons
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LIST OF TABLES
Table 1. Variables considered.
Table 2. Combinations of variables corresponding to the variables tested.
Table 3. Experimental results from the creep tests performed.
Table 4. Results from the MLR analyses (additive models) on creep parameters.
Table 1. Variables considered.
Variables Levels Compressive strength
of concrete, fc
40 MPa 25 MPa Maximum aggregate size
(MAS)
10 mm 20 mm
Fiber slenderness, f
Fiber length, Lf
80/35 80/50 65/40 45/50 50/30
Fiber content, Cf
40 kg/m3
70 kg/m3
Nominal load ratio, IFn 60% 80%
Position of specimen
1 (top) 2
Table 2. Combinations of variables corresponding to the variables tested. Id. fc MPa Max.aggr. size, mm Cf
kg/m3 f
Lf
mm IFa
Table 3. Experimental results from the creep tests performed.
COR (x10–3) spCOR (x10–3)
(14) (30) (90) 0(14) 0(30) 0(90)
Id. r wci wcd(90) 0-14 14-30 30-90 0-14 14-30 30-90
Table 4. Results from the MLR analyses (additive models) on creep parameters.
fc MAS Cf fCf LfCf IFa Pos. R2
r (–) (–) (+) (+) -- -- 0.84
wci (+) (+) (–)3 0.80
wcd(90) (+) (–) (+) (–)3 0.77
COR(0-14) (+) (–)3 0.83
COR(14-30) (–) (+) 0.27
COR(30-90) (–) (–) (–) (+) (+) 0.63
spCOR(0-14) (+) (–) (+) (–)3 0.71
spCOR(14-30) (–) (+) 0.30
spCOR(30-90) (–) (–) (–) (+) 0.69
(14) (–) (–) (+) 0.40
(30) (–) (–) (–) (+) 0.47
(90) (–) (–) (–) (+) 0.55
o(14) (+) 0.56
o(30) (+) (–) (+) 0.58
o(90) (+) (–) (+) 0.55
(count) 6 6 5 11 4 12 4
+/− in each case indicates the sign of the coefficient multiplying the corresponding simple effect
Table 5. Results of the MLR analyses (constitutive models) on creep parameters.
IFa fc·IFa MAS·IFa Cf·IFa fCf·IFa LfCf·IFa Pos·IFa R2
r -- -- -- -- -- -- --
wci (+) (+) (–)3 0.84
wcd(90) (+) (–)3 0.72
COR(0-14) (+) (–)3 0.84
COR(14-30) (+) (+) (–) 0.24
COR(30-90) (+) (–) (–) 0.59
spCOR(0-14) (+) (–) (–) (–)3 0.76
spCOR(14-30) (+) (–) 0.31
spCOR(30-90) (+) (–) (+) (–) (–) 0.74
(14) (+) (–) 0.32
(30) (+) (–) 0.39
(90) (+) (–) 0.39
o(14) (+) 0.56
o(30) (+) 0.53
o(90) (+) (+) (–) 0.55
(count) 10 5 2 6 7 1 4
+/− in each case indicates the sign of the coefficient multiplying the corresponding simple effect or
