Why Transverse Tining? Standard Practice Pre-1970’s? Burlap Drag (46 states) Brooming CA Div. of Highways, 1971 LA Freeway Studies Grooving techniques Capital Beltway in MD Concrete Pavement… What Happened?
FHWA Technical Advisories… FHWA T5140.10 September 1979 Replaced Notice FHWA N5080.59 September 1976, "Texturing of Concrete Pavements and Bridge Decks.“ “… transverse grooving is considered to be superior to longitudinal grooving for general use on new construction …”
FHWA Technical Advisories… FHWA T5040.36 “Surface Texture for Asphalt and Concrete Pavements” – Includes the following textures: Transverse TiningLongitudinal Tining Exposed AggregateDiamond Grinding Diamond GroovingBurlap Drag Atrificial Turf DragTransverse Broom Good discussion of micro/macro texture, noise, etc.
8133151214210616179111574 3/4” S + 1/16” D + Turf Random S + 1/8” D + Burlap 1” S + 1/8” D + Burlap 3/4” S + 1/8” D + No Pretexture 3/4” S + 1/4” D + Burlap1/2” S + 1/8” D + Burlap3/4” S + 1/8” D + Burlap (Short) Diamond Grinding 1/2” S + 1/8” D + Burlap Standard TurfHeavy TurfHeavy Burlap Standard Burlap 3/4” S + 1/8” D + Turf 1/2” S + 1/16” D + Burlap3/4” S + 1/16” D + Burlap3/4” S + 1/8” D + Burlap (Long) Longitudinal TiningTransverse TiningDragDiamond Grinding 18 1” S + 1/8” D + Burlap DFT/CTM Friction ASTM E 274 Skid Trailer Measured Friction
SOUND of SILENCE… What’s New? Pavement Surface Characteristics
CONCLUSIONS Sustainability of Concrete Pavements Early Experiments in Transportation
History – why transverse tining 2005 FHWA TA Move to long. textures Quieter Safe More uniform Acoustic durability! Friction and Noise – Longitudinal textures If noise is issue – NGCS is durable solution! Summary/Conclusions
Resources… Engineering Bulletin Pavement Surf. Char.: Synthesis and Guide Available on our website: www.acpa.org Topics for our 2009 program : Concrete Mix Design Basics Concrete Pavement Materials Sustainability of PCCP Curing Hydration Processes Introduction to the M-E PDG Joint Layout and Design Life Cycle Cost Basics Materials Incompatibility Maturity Slipform Paving Operations Soil Stabilization Texturing Concrete Pavements Thickness Design – Municipal Troubleshooting Slabs on Grade PROFESSORS SEMINAR CONCRETE PAVEMENT 101/201
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