Concrete

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End Product Requirements vs. Perfor rmance ‣ Material requirements -> Material distresses -> Durability ‣ Air -> Freeze-Thaw Damage -> Durability ‣ Dowel alignment –> Early Cracking & Load Transfer at Joints -> Structural Performance (20+ year life) ‣ Thickness/Strength –> Structural/Fatigue Cracking -> Structural Performance (20+ year life) ‣ Grade -> Aircraft Operation ‣ Smoothness -> Functional Performance -> Aircraft Operation/Aircraft maintenance • ARE WE MEASURING THE RIGHT PARAMETERS ‣ Texture/Grooving -> Functional Performance -> Safety
Quality vs. Construction Variability ‣Variability is an inherent part of construction. • Material, Process, and Testing (precision and bias) ‣ All sources of variability have a negative impact on the property being measured. ‣Need to understand the magnitude of the different sources of variability ‣Quality construction ti requires control over all sources of variability. 27
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 and 16: Opening to Construction Traffic (Fo
Page 17 and 18: Stabilized Base (CTB) Interface Typ
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: Quality in Construction ‣ For con
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

Concrete

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