Table 7.
Effect of fly ash on some of the mechanical properties and durability recorded by different researchers.
| Dose range | W/C | Curing time | Optimum compressive strength |
Optimum split tensile strength |
Optimum flexural strength |
Durability of addingfly ash comparing with control mixtures |
References | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dose (%) | Age (days) | Dose (%) | Age (days) | Dose (%) | Age (days) | Water absorption | Acidic attack | ||||
| 0,5,10,15,20 | – | 28,60,90 | 10 | 28,60,90 | – | – | – | – | – | Decrease | [271] |
| 0,10,20,30 | 0.45 | 7,28 | 30 | 7,28 | – | – | – | – | – | – | [272] |
| 0,10,20,30,40,50 | – | 7,14, 21,28 |
10 | 7,14,21, 28 |
10 | 7,14, 21,28 |
– | – | – | – | [273] |
| 0,10,30 | 0.45 | 3,7,28 | 10 | 3,7,28 | 10 | 7,28 | 10 | 7,28 | – | – | [274] |
| 0,15,30,45 | 0.55 | 3,7,14,28 | 30 | 3,7,14,28 | 30 | 3,7,14,28 | – | – | – | – | [275] |
| 0,10,20 | 0.34 | 7,28 | 10 | 7,28 | 10 | 7,28 | 10 | 7,28 | – | – | [276] |
| 0.5,10,15 | 0.50 | 7,28, 56,90 |
5 | 7,28,56, 90 |
5 | 7,28, 56,90 |
– | – | – | – | [10] |
| 0,10,30,50,70 | 0.30 | 28,56 | 30 | 28,56 | 30 | 28,56 | – | – | Decrease | Decrease | [277] |
| 0,5,10,15,20,25 | 0.50 | 7,28, 90, 180, |
10 | 7,28,90, 180, | 10 | 7,28, 90, 180, |
– | – | – | – | [278] |
| 0,5,10 | 0.65 | 28,100,130 | 5 | 100,130 | – | – | – | – | Decrease | Increase | [279] |