UFC 4-150-07
19 June 2001
The below acrylic system may be used as an overcoat for sound
coating systems whereas all three systems are acceptable for use on uncoated
concrete.
55% volume solids, flexible acrylic waterborne (water-based): 1 to 2
coats at 0.1 to 0.4 mm (3.94 to 15.75 mils) DFT
Two-component, epoxy polyamide primer followed by two coats of
a flexible acrylic topcoat: 3 coats at 0.5 mm (19.67 mils) total DFT
(0.15 mm (5.9 mils) primer, 0.2 mm (7.87 mils) topcoat
Two-component, epoxy polyamide primer followed by two coats of
a two-component, aliphatic urethane topcoat: 3 coats at 0.25 mm
(9.84 mils) total DFT (0.15 mm (5.9 mils) primer, 0.1 mm (3.94 mils)
topcoat, 0.1 mm (3.94 mils) topcoat)
3-3.6.4 Treatment of Cracks. Cracks in concrete are typically caused by
shrinkage during curing, thermal expansion and contraction, rebar corrosion,
operational loading, or structure settlement. Cracks are routed out and repaired
using a flexible elastomer over bond-breaker tape. Hairline cracks may be
repaired by pressure injecting polyurethane or methyl methacrylate through
injection ports. Chapter 7 provides details of materials and procedures to use to
repair both static and dynamic cracks in concrete.
3-4
STEEL. Steel is used extensively in construction and repair of water-
front facilities due to availability, cost, ease of fabrication, physical and
mechanical properties, and design experience. Structural steel and cast or
fabricated steel are used in all areas of the waterfront. Typical applications
include:
Piers and wharves use steel H-piles or pipe piles to support or
brace the structure. Structural steel shapes are used for framing.
Bulkheads and quaywalls use interlocking steel sheet piling with tie
rods and wales. Steel sheet piling is used to retain fill.
Fender systems incorporate steel H-piles.
Mooring hardware such as cleats, bollards, bitts, and chocks are
made from cast or fabricated steel.
Other items such as utility lines, grating, opening frames, manhole
covers, fences, bolts and nuts, handrails, and concrete
reinforcement are made of steel.
Steel components are used in some camels.
3-18
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