Bubbled roller-compacted concrete dam: an idea of a hollow dam

Roller-compacted concrete (RCC) is widely known for its relatively low cost and short construction time. RCC gravity dams require high foundation (rock) bearing capacity. Research studies have been carried out which propose to rationalise the amount of material in the dam by creating inner voids, in...

Full description

Saved in:
Bibliographic Details
Published in:Dams & reservoirs 2022-03, Vol.32 (1), p.21-28
Main Authors: Mohamed, Ezzeldin K., Khalail, Eehab
Format: Article
Language:English
Subjects:
Bearing capacity
Bubbles
Concrete
Concrete construction
Concrete dams
Connecting
Construction
Construction methods
Dam foundations
Dam safety
Dam stability
Detention dams
Gravity
Gravity dams
Heat of hydration
Hollow dams
Rocks
Roller compacted concrete
Voids
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Roller-compacted concrete (RCC) is widely known for its relatively low cost and short construction time. RCC gravity dams require high foundation (rock) bearing capacity. Research studies have been carried out which propose to rationalise the amount of material in the dam by creating inner voids, in the shape of bubbles. As a key requirement, the introduced bubbles should not affect the dam stability and safety. The bubbles will reduce the self-weight of the dam and minimise the required rock-bearing capacity. A system of pipes connecting the bubbles ensures drainage of the bubbles. The proposed dam would save about 12% of the required concrete volume. Different construction methods were studied and the best alternative is the use of precast hollow boxes. This decreases RCC placement in the dam by 32.5%. The objective is to speed the construction process and minimise the risk of the heat of hydration.
ISSN:1368-1494
1756-8404
DOI:10.1680/jdare.21.00030