A Mix Design for Lining Concrete of Concrete-face Rock-Fill Dams
A concrete face rock-fill dam
As defined by Wikipedia, a concrete-face rock-fill dam is a rock-fill dam with concrete slabs on its upstream face. This design offers the concrete slab as an impervious wall to prevent leakage and also a structure without concern for uplift pressure. In addition, the concrete-face rock-fill dam design is flexible for topography, faster to construct and less costly than earth-fill dams.
A typical mix design for lining concrete of rock-filled dams.
|
Components |
Unit |
Quantity |
|
Cement OPC |
kg |
300 |
|
Puzzolan |
kg |
45 |
|
Water |
liter |
190 |
|
Sand |
liter |
835 |
|
Aggregate 5×10 |
kg |
160 |
|
Aggregate 10×20 |
kg |
372 |
|
Aggregate 20×40 |
kg |
532 |
|
Plasticizer |
liter |
1.73 |
|
Air Entrained Agent |
liter |
0.1 |
Concrete Requirements:
- Compressive Strength: 25 MP (250 KG/cm2)
- Waterproofing Ability (stable water column): 8 bars
- Air content: 4-5%
- Slump: 8 + 2 cm
The proportion above is for indication. Depend of the project specifications and local materials, the mix design may change. Trials at lab shall be needed.
