concrete overlays. Ultra thin overlays have increased in popularity due to their lack of noise and improved ride quality, as well as their reduced overall cost owing to the reduced layer thickness. This study had three major objectives: (i) determine the best mix type for use as an ultra thin overlay, (ii) evaluate the volumetric-based

Thin Asphalt Overlays for Pavement Preservation Mid-Year Asphalt Pavement Technical Seminar Sponsored by Flexible Pavements of Ohio . Defining a Thin Asphalt Overlay? Thin overlays are typically ≤ 1 ½ inch thick (ODOT defines as any overlay less than or equal to 2 inch thick) ... –Sufficiently hot …

Thin Hot-Mix Asphalt Overlay 8 3-thin hot-5-30.qxd 6/8/2003 2:15 PM Page 8. Thin Hot-Mix Asphalt Overlay 9 Trucks! Sufficient trucks are available to allow the paver to keep moving at a uniform speed. ! Trucks are clean and free of solvents before the mix is loaded.! Trucks have tarpaulins to cover mix …

Thin Asphalt Overlays Thin asphalt overlays are a popular solution to pavement preservation. They are economical, long-lasting, and effective in treating a wide variety of surface distresses to restore ride quality, skid resistance, and overall performance.

Nov 17, 2014· Bonded Wearing Course combines the strength of hot mix with the flexibility of thin maintenance treatments. It provides a durable, drainable wearing surface on …

within one day of overlay placement. Thin concrete overlays can also be opened quickly in hot weather. 4. Inch for inch, concrete overlays are one of the most cost-effective pavement alternatives. Maintenance and rehabilitation alternatives typically last longer than their asphalt counterparts with the same thickness. 5.

Ultra-Thin Bonded Wearing Course. UTBWC is a specialty ultra-thin asphalt overlay used to restore ride quality while sealing and protecting the underlying pavement. It can also be used to mitigate shallow (less than 0.5-inch) rutting and can help retard fatigue cracking.

613 – ULTRATHIN BONDED ASPHALT SURFACE 600-69 Provide an organizational chart showing the specified lines of authority relating to both mix design and quality control operations during production. Identify the company official acting as liaison with KDOT, and the Certified Technician who will direct inspection and testing.

specification of 65 gyration asphalt mix designs will not be allowed on projects let after December ... • Added "Concrete Overlays – Bonded" under Bituminous Rehabilitation Strategies. ... 5.5 Ultra-Thin Bonded Wearing Course NEW

To order UPM ® High-Performance Cold Mix asphalt repair material for pavement and pothole repair, or other UNIQUE ® concrete & asphalt repair products for driveway repair, road repair and other asphalt maintenance needs - Contact UNIQUE Paving Materials today. (800) 441-4880 Or [email protected]

Dec 09, 2010· As such UTACS are similar to Caltrans' bonded wearing course, "a gap- or open-graded, ultra-thin hot-mix asphalt mixture applied over a thick polymer modified asphalt emulsion membrane," to …

At the same time, the machine installs a thin layer of a high quality, open graded, hot mix asphalt to the asphalt or concrete it is being placed on (1/2 inch to 7/8 of an inch). The end result is a superior hot mix surface treatment.

Types of Concrete Overlays On Existing Portland Cement Concrete (PCC) Pavements –Bonded PCC overlays –Unbonded PCC overlays On Existing Hot-Mix Asphalt (HMA) Pavements –Bonded PCC Overlays (aka, thin and ultra-thin whitetopping –Unbonded PCC overlays …

of a durable fine-graded thin hot-mix asphalt (HMA) overlay mixture for pavement preservation. Accordingly, a comprehensive laboratory evaluation was conducted. The investigation considered establishing two mix designs using typical local materials for the northern and southern part of the state.

Aug 26, 2015· An Ultra Thin Overlay is a preventative surface treatment used on roads to extend pavement life. The process places approximately ¾" of hot asphalt over the existing surface.

What is BWC? HMA Emulsion membrane •A thin, Hot Mix Asphalt Overlay placed over a polymer modified emulsion membrane which: •seals the existing pavement •bonds the two surfaces •The roadway is open to traffic very quickly •This process is done in a single machine Chapter 11 – Bonded …

3142 - Ultra-Thin Bonded Hot Mix Wearing Course (UTBHMWC) SPECIFICATION REQUIREMENTS 1) When PG binder is specified, p rovide an asphalt binder with a high temperature grade of PG76 and a low temperature grade as shown on the plans, in accordance …

Construction. All hot-mix asphalt removal and deck repairs shall be performed and cured according to the Special Provision for "Deck Slab Repair" prior to any surface preparation operations. The thin polymer overlay shall not be placed on any concrete surface that is less than 28 days old. (a) Surface Preparation. (1) Bridge Deck Scarification.

Concrete Pavement Overlay Design Jeffery Roesler, Ph.D., P.E. Professor ... Pre-overlay Repair ... Thin Bonded Concrete Overlays of Asphalt Pavements (UTW) Relatively Thin Slab s (3 to 6 in) Square Slabs (4ft by 4ft to 6ft by 6ft) Milled Surface

Thin Hot Mix Asphalt (HMA) overlay, Open graded friction course, Ultra-thin bonded wearing course, Chip seal (seal coat), Slurry seal, Microsurfacing, Diamond grinding, Grooving, Micro-milling, Shortblasting/abrading, Cape seal, Scrub seal, and ; High friction surfacing.

SPECIAL NOTE FOR ASPHALT WATERPROOFING MIX . FOR BRIDGE-DECK OVERLAYS AND ADJACENT APPROACHES . 1. DESCRIPTION. Asphalt Waterproofing Mix (AWM) is a highly elastomeric, polymer-modified, impermeable asphalt mixture that is designed to be a one-step, waterproof, wearing course system for bridge-deck overlays and the adjacent approaches.

Pennsylvania's Experience with Thin Asphalt Overlays Mansour Solaimanian, PhD, PE ... HMA Ultra-Thin 12.5 9.5 4.75 100 99-100 75-95 3/4 NC Ultrathin Bonded Wearing Course 12.5 9.5 4.75 100 85-100 ... of Asphalt Mix for Thin Lifts Tack Coat, CSS -1h Surface Type Residual Application Rate

Ultra-thin bonded wearing course (referred as Novachip®) is a surface treatment process developed in France in 1980s. UTBWC involves the placement of a thin 38 " to ¾ " gap graded course aggregate hot mix asphalt over a membrane called Novabond®. Novabond®is a polymer

An ultra-thin (< 1") bonded asphalt wearing surface (UBAWS) is a hot mix asphalt (HMA) overlay placed over a heavy asphalt emulsion layer or membrane. The thickness ranges from 1/2 in. to 3/4 inch. The table below lists the minimum lift thickness for each UBAWS type based on the nominal maximum aggregate size allowed for the mixture.

Thin Overlays By Robert W. Sauber Supervising Engineer July 2009 Pavement Preservation NJDOT • Increasing need to repair and maintain rapidly deteriorating infrastructure leads to: ... Ultra-Thin Systems • Special thin mix - General

What is BWC? HMA Emulsion membrane •A thin, Hot Mix Asphalt Overlay placed over a polymer modified emulsion membrane which: •seals the existing pavement •bonds the two surfaces •The roadway is open to traffic very quickly •This process is done in a single machine Chapter 11 – Bonded Wearing Course

Overlays (either structural or non-structural) make up a large portion of the roadway paving done today.The degree of surface preparation for an overlay is dependent on the condition and type of the existing pavement. Generally, the existing pavement should be structurally sound, level, clean and capable of bonding to the overlay.

Section 6: HMA Overlays Anchor: #i1009893 6.1 Structural Overlays. For flexible pavements, structural hot-mix overlay thicknesses are designed using FPS 21 design, option 6. Currently, the only department-approved rational method for design of structural HMA overlays on rigid pavements is by using the appropriate overlay option in DARWin® 3.1 ...