Sprayed concrete for repairing concrete structures - Concrete Repair - page 228

Table 13.3 Typical uses for sprayed concrete

Geometry Substrate

Repair
scenario

Surface
characteristics Purpose Size Depth Tolerance Type

Bridge
soffits

Cover for
durability
Structural

50-100
mm

±10 mm Concrete Carbonation

Chlorides
AAR

< 2 m 3

Bridge
abutments,
marine
structures

Cover for
durability
Structural

< 2 m 3 50-100

mm

±10 mm Concrete Carbonation

Chlorides
AAR

Buildings,
water
retaining
structures,
RC chim-
neys, car
parks

Cover for
durability
Structural

< 2 m 3 50-100

mm

±10 mm Concrete Carbonation

Chlorides in car
parks

Fire-
damaged
structures

Structural < 2 m 3 50-100

mm

±3 mm
(visible)
±10 mm
(covered)

Concrete Fire damage

Tunnels Structural < 1 m 3 100 mm ±10 mm Concrete Carbonation

Chlorides

Sewers,
masonry
tunnels,
arch
bridges
etc.

Strength-
ening

1+ m 3 25-50 mm

(< 100
mm)

±10 mm Masonry Deteriorated

masonry