Properties of Concrete with Tire Derived Aggregate Partially Replacing Coarse Aggregates
Table 5
Calculated elastic modulus, splitting tensile strength, flexural strength, peak bond stress, and calculated area under stress-strain plots for the control and TDA concrete with and without silica fume.
Component
Control-0% TDA
7.5% TDA -1′′
7.5% TDA -1′′-SF-A
Elastic modulus, psi (MPa)
At 28 days
3.35E + 06 (2.31E + 04)
2.72E + 06 (1.88E + 04)
2.69E + 06 (1.85E + 04)
At 7 days
2.69E + 06 (1.85E + 04)
2.37E + 06 (1.63 + 04)
2.13E + 06 (1.85E + 04)
Splitting tensile strength, psi (MPa)
At 28 days
466 (3.2) ± 7.9%
525 (3.6) ± 7.2%
At 7 days
466 (3.2) ± 17%
431 (2.97) ± 6%
Flexural strength (modulus of rupture), psi (MPa)
At 28 days
570 (3.93) ± 10.7%
535 (3.69) ± 2.7%
480 (3.31) ± 6.9%
At 7 days
602 (4.2) ± 10%
550 (3.8) ± 7%
464 (3.2) ± 12%
Pull-out test, peak bond stress, psi (MPa)
At 28 days
1929 (13.3) ± 12.3%
1890 (13.0) ± 14.3%
Calculated area under stress-strain plots representing concrete toughness
