Table 3.
Effect of bentonite 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 adding bentonite comparing with control mixtures |
References | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dose (%) | Age (days) | Dose (%) | Age (days) | Dose (%) | Age (days) | Water absorption | Acidic attack | ||||
| 0,5,10,15,20,25 | 0.40 | 0,7,28,56 | 15 | 7,28, 56 |
15 | 7,28, 56 |
– | – | Increase | Decrease | [208] |
| 0,10,15,20,25,30,35 | 0.5 | 7,28,180 | 0 | 0,10, 15,20, 25,30, 35 |
15 | 7,28, 180 |
– | – | – | – | [200] |
| 0,5,10,15,20 | 0.48 | 7,28 | 5 | 7,28 | 5 | 7,28 | 5 | 7,28 | – | – | [209] |
| 0,5,10,15,20 | 0.47 | 7,28 | 5 | 7,28 | 5 | 7,28 | 5 | 7,28 | – | – | [210] |
| 0,5,10,15,20 | 0.50 | 28,56,90 | 15 | 28,56,90 | 15 | 28,56,90 | 15 | 28,56,90 | – | Decrease | [204] |
| 0,10,15,20 | – | 28 | 15 | 28 | 15 | 28 | – | – | – | – | [211] |
| 0,5,10,15,20 | 0.53 | 0,3,28,90 | 15 | 90 | 15 | 90 | – | – | Decrease | Decrease | [96] |
| 0,5,10,15,20 | 0.40 | 0,7,28,56,90 | 15 | 56,90 | – | – | – | – | Increase | – | [212] |
| 0,5,10,15 | 0.40 | 0,3,7,28 | 10 | 28 | 10 | 28 | 10 | 28 | – | – | [213] |
| 0,3,6,9,12,15,18,21 | 0.58 | 3,7,28,56 | 15 | 56 | – | – | – | – | Decrease | Decrease | [214] |