Concrete

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Gaps Addressed by IPRF Studies Stabilized base interface ‣Basis: <strong>Concrete</strong> paveme ents constructed over certain types of stabilized (rigid) and permeable bases may have a highe er risk of early-age age cracking (even when constructed in accordance with standard specificati ions). ‣Need for better guidance for slab/base interface
Stabilized Base (CTB) Interface Typical US- asphalt emulsion, two coats of curing compound More positive methods – choke layer (IPRF), ~2 in. AC layer, mm thick geotextile (Germany), Geo-fabric (e.g., Denver) Fabric nailed in-place Geo-fabric bond-breaker over CTB at Denver Airport 5 mm geotextile over CTB (German practice) 17
Page 1 and 2: 2009 Concrete Pavement Workshop Atl
Page 3 and 4: Airport Concrete Pavement Performan
Page 5 and 6: How do Airfield Concrete Pavements
Page 7 and 8: Outline Recent IPRF Construction Re
Page 9 and 10: Over-riding Assumptions for IPRF St
Page 11 and 12: Gaps Addressed Best Pract tices Gui
Page 13 and 14: Maturity Testing
Page 15: Opening to Construction Traffic (Fo
Page 19 and 20: Gaps Addressed by IPRF Studies Conc
Page 21 and 22: Gaps Addressed Airfield pavement sm
Page 23 and 24: Construction Specification Objectiv
Page 25 and 26: Quality in Construction ‣ For con
Page 27 and 28: Quality vs. Construction Variabilit
Page 29 and 30: Typical Concrete Requirements (Desi
Page 31 and 32: Concrete Aggregates Gradation ‣Re
Page 33 and 34: Critical Factors for Concrete Pavin
Page 35 and 36: Test Section ‣Used to evaluate co
Page 37 and 38: Paving Equipment Requirements ‣Ma
Page 39 and 40: Concrete Placement Options ‣ Meth
Page 41 and 42: Water Addition at Site ‣W/cm rati
Page 43 and 44: Filler Lane Placement ‣Reasonably
Page 45 and 46: 1 Inject Grout to Back of Hole 2 Tw
Page 47 and 48: Dowel Bar Ali ignment Testing Germa
Page 49 and 50: Concrete Consolidation ‣Proper co
Page 51 and 52: Finishing Operations ‣Minimal han
Page 53 and 54: Concrete e Curing ‣Need to mainta
Page 55 and 56: Curing Compou und Application ‣Ti
Page 58 and 59: Protection of Concrete Against Rain
Page 60 and 61: Factors that Shorten Window ‣Sudd
Page 62 and 63: Contractor Process Control ‣Provi
Page 64 and 65: Acceptance Testing ‣Intent of tes
Page 66 and 67:
Concrete Strength ‣Strength Metho
Page 68 and 69:
Plastic Shrinkage Cracking ‣Typic
Page 70 and 71:
Defective Pavement ‣Full-depth p
Page 72 and 73:
Future Considerations ‣More end p
Page 74:
Greetings from Washington Thank You
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Concrete

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