Table 5 Properties of preliminary concrete mixtures
From: Flexural behaviour of recycled reinforced concrete beams strengthened/ repaired with CFRP laminates
Group 1 Specimen | Compressive strength 7 days (N/mm2) | Compressive strength 28 days (N/mm2) | Slump (mm) |
|---|---|---|---|
B1-0 | 26.5 | 35 | 90 |
B1-1 | 24.2 | 33.2 | 100 |
B1-2 | 20.5 | 30 | 115 |
B1-4 | 21.7 | 29.3 | 140 |
B2-0 | 26.7 | 35 | 90 |
B2-2 | 20.8 | 32 | 110 |
B2-4 | 22 | 30 | 145 |