ACI 210.1 R-94 Compendium of Case Histories on Repair of Erosion-Damaged Concrete in Hydraulic Structures

ACI 210.1 R-94 Compendium of Case Histories on Repair of Erosion-Damaged Concrete in Hydraulic Structures

210.1R_94

Dworshak Dam. Detail showing depth of erosion behind reinforcing steel

Extent of outlet surface preparation prior to concrete and mortar placements

Extent of outlet surface preparation prior to concrete and mortar placements

Erosion of spillway tunnel invert and sandstone foundation rock downstream of the elbow

Diagram of new tunnel spillway air slot

Cavitation erosion of navigation lock portal surfaces

Cavitation erosion of flip lip surface

Downstream detail of constrictor ring

Cavitation erosion of concrete invert and adjacent damage to steel liner. Maximum depth approximately 9 in.

Diagram of concrete repair of stilling basin endsill

This report could be a companion document to ACI 210R. It contains a series of case histories on hydraulic structures that are broken by erosion from varied physical mechanical and chemical actions. several of those structures are with success repaired. there have been several examples to select from; but, the committee has elite recent, typical comes, with differing repair techniques, to supply a broad vary of current experience. These case histories cowl solely harm to the hydraulic surfaces due to the action of water, waterborne material or chemical attack of concrete from fluids sent on the hydraulic passages. additionally to repairs of the broken concrete, remedial work ofttimes includes style modifications that  are supposed to eliminate or minimize the action that created
the damage.
This report does not cowl repair of concrete damaged by other environmental factors such as freeze-thaw, expansive aggregate, or corroding reinforcement. 

Keywords: abrasion; abrasion resistance; aeration; cavitation; chemical attack; concrete dams; concrete pipes; corrosion; corrosion resistance; deterioration;
erosion; grinding (material removal); high-strength concrete hydraulic structures; maintenance; outlet works; penstocks; pipe linings; pipes (tubes); pittings; polymer
concrete; renovating; repairs; sewers; spillways; tolerances (mechanics); wear.

Barceloneta Trunk Sewer
Dworshak National Fish place
Los Angeles sanitary installation and
Hyperion waste matter Treatment Facility
Pecos gully Watershed, Site 1

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