High Performance Self-Compacting Concrete for Underwater Construction
It is very difficult to assure the quality of underwater construction. Usually it relies on the skilled worker and an estimated reduction on the strength. Since the 921 earthquake, the design earthquake force has been increased and the amount of steel reinforcement is also increased. This leads to a higher reinforcement ratio and small gap among steel rebars. The traditional concrete for underwater construction needs a change. The concrete posses the ability of both self-compacting and anti-washout is the concrete which can meet the stringent requirements of modern construction. This study develops the concrete which has the self-compacting capability and anti-washout, non-dispersive in water, and high strength. This concrete is then subjected to mechanical tests to make sure its suitability for field use. This concrete may be used with tremie pipe so that the underwater structures can be more reliable, safer, more efficient in construction, and durable.