Core property is resistance to water erosion;it sinks as a coherent mass during underwater placement without being diluted or washed out,ensuring structural uniformity and strength.Highly fluid and self-compacting,requiring no vibration.Exhibits a high in-water to in-air strength ratio.Minimizes turbidity and pollution of the surrounding water.
Key performance indicator is anti-washout resistance,measured by paste washout percentage and pH increase of the surrounding water.Workability is characterized by slump flow.Strength must be specified alongside the water/air strength ratio.Slow slump flow loss is essential due to high fluidity requirements.Mix design can be adjusted for water depth,current,etc.
Primarily for construction and repair of hydraulic,hydro-power,and port structures underwater:dam stilling basin repair,bridge pier foundation protection,wharf pile fender maintenance,cofferdam sealing.Marine engineering:submarine pipeline ballasts,grouting after breakwater block placement.Consolidation around river crossings for pipelines.Placement methods include tremie,pumping,or skip placement.
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