Learn more about our emulsions for tack and fog seals, prime coats, slurry seals and chip seals: CQS-1hLM, CRS-1, CRS1-h, CRS-2, CSS-1h, Emulsified Asphalt Prime, NTCQS-1hM, RC-250. Download the data sheets for all of our products here too.
1.1 This test method measures the curing performance characteristics of bituminous emulsion and aggregates by simulating the brooming of a surface treatment in the laboratory. 1.2 The values stated in SI units are to be regarded as the standard unless otherwise indicated.
Surface Treatment. Surface Treatment is the application of an asphalt emulsion on either an existing asphalt road or a fresh, compacted granular surface immediately followed by the application of a cover aggregate. It provides an economical all- weather surface for light to higher volume traffic depending on the emulsion and quality of ...
A distributor truck first applies the asphalt emulsion to help seal the pavement surface. Using an asphalt emulsion is considered a "cold applied" chip seal even though the liquid temperature is typically between 110 and 150 degrees Fahrenheit. No smoke results from the application of emulsified asphalt.
A slurry seal is a mixture of emulsified asphalt, water, well-graded fine aggregate and mineral filler that has a creamy fluid-like appearance when applied. Slurry seals are used to fill existing pavement surface defects as either a prefatory treatment for other maintenance treatments or as a wearing course.
Oct 03, 2018· One such treatment is a Bituminous Surface Treatment (BST). This process consists of applying an asphalt emulsion followed immediately by stone chips and pneumatic rollers to embed the chips into the emulsion. For this project, two layers of bitumen and chips will be applied.
Bituminous surface treatment (BST) or chipseal is used mainly on low-traffic roads, but also as a sealing coat to rejuvenate an asphalt concrete pavement. It generally consists of aggregate spread over a sprayed-on asphalt emulsion or cut-back asphalt cement.
4.1 This test method is useful for classifying rapid-setting bituminous emulsions and is applicable to surface treatments that require a quick return to traffic. It has the capability to predict surface treatment performance in the formative stage using construction components. This performance test is intended to evaluate the potential curing characteristics of a binder-aggregate combination ...
Ultra Thin Bonded Wearing Course (UTBWC) is designed for use as a high performance surface treatment over structurally sound asphalt or concrete pavements. This treatment is used to correct surface distresses, such as raveling or cracking, to restore a smooth surface. The Ultra-Thin Bonded Wearing Course Process:
A bituminous surface treatment (BST), also known as a seal coat or chip seal, is a thin protective wearing surface that is applied to a pavement or base course.BSTs can provide all of the following: A waterproof layer to protect the underlying pavement.
A Bituminous Surface Treatment generally consists of aggregate spread over a sprayed-on asphalt emulsion (HFE-150, RS-2), polymerized emulsion (HFP) or cut-back asphalt (PG 46-28). Asphalt applications are done with a calibrated/computerized etnyre distributor to ensure an accurate rate of application of asphalt material.
Bituminous Surface Treatments Graded Aggregate Seals J. Keith Davidson P.Eng. Director Technology and Product Development McAsphalt Industries Limited C-TEP - Western Canada Pavement Workshop Calgary Alberta February 1-2, 2011
Standard Construction Specifications Division 40 – Asphalt Surfacing Revised 11/08 SECTION 40.02 SEAL COAT Article 2.1 Description The Work under this Section consists of the performance of all Work required for the construction of a seal coat of asphalt cement and cover aggregate on RAP, strip-paved, and gravel surfaces. Article 2.2 Asphalt
The fiber reinforced bituminous membrane surface treatment shall not be applied more than 50 meters, (150ft), in advance of the self-propelled chip spreader. Under no circumstances shall operations proceed in such a manner that the fiber reinforced bituminous membrane surface treatment will be allowed to chill, set-up, dry or
PREVENTIVE MAINTENANCE – BITUMINOUS SURFACE TREATMENT (A-1) (BDE) ... Revised: July 1, 2016 . Description. This work shall consist of constructing a single bituminous surface treatment (A-1). Materials. Materials shall be according to the following Articles/Sections of the Standard ... aggregate shall cover the asphalt emulsion within ...
Most emulsion used by TxDOT is for surface treatments. Emulsions enable much lower application temperatures to be used. Application temperatures range from 45°C to 70°C. This is much lower than the 150 to 190°C used for asphalt cements. The lower application temperatures will not damage the asphalt and are much safer for field personnel.
A preventive maintenance surface treatment consisting of a spray application of asphalt emulsion followed with a light covering of fine aggregate, such as clean sand or screenings. The sand seal protects and seals the pavement. Emulsion is sprayed on the road and then covered with aggregate. Can fill cracks. CIR-EE CHFRS-1HP
A scrub seal is a treatment in which a bituminous material (emulsion or asphalt binder) is literally scrubbed into the surface of a heavily cracked asphalt pavement using brushes (figure 15). A cover aggregate is then broadcast over the surface, in a similar manner to a chip seal.
Basic Asphalt SURFACE TREATMENTS AEMA Emulsion Manual Rev. 1 Mar 2004 6-1 SECTION 6 SURFACE TREATMENTS Asphalt surface treatment is a broad term embracing several types of asphalt and as-phalt-aggregate applications, usually less than 25 millimeters (1 in.) thick and applied
This specification covers the requirements for surface preparation, application of bituminous binder, and application of aggregate for single and double surface treatment. 304.01.01 Significance and Use of Appendices Appendices are not a mandatory part of the specification unless invoked by the Owner.
Oct 31, 2018· This surface treatment can be used for maintenance on an asphalt or concrete pavement. It can also be used as a surface course on new asphalt pavement construction. The treatment is a one-pass paving process using a special machine that sprays a polymer modified asphalt emulsion, then places the ultrathin hot mix with a special screed.
Microsurfacing and Slurry Seal are surface seal treatments consisting of an emulsion, fine graded aggregates, performance enhancing additives, and water. Microsurfacing requires the use of a polymer modified asphalt emulsion. This application is designed for quick traffic return with the capacity of handling high traffic volume roadways.
asphalt emulsion coating that is job-mixed with specially graded aggregate and applied to the pavement surface. The result is a highly durable, slip-resistant surface treatment …
Asphalt Surface Treatments for Local Roads and Streets Ellis G. Williams ... 6. Emulsion Breaking, Setting, and Curing 31 7. Storage and Handling 32 IV. DESIGN OF SURFACE TREATMENTS 33 A. Design of Asphalt/Aggregate Applications, Single 33 ... TREATMENTS ASPHALT SURFACE TREATMENTS & ...
modification methods, demonstrated performance, surface treatments, environmental applicability, materials selection, and cost-benefit analysis of polymer modifiers. A brief overview of polymer and emulsion chemistry is provided, as is a discussion of the pavement conditions and applications which contraindicate the use of polymer modifiers.
Asphalt seal-coat treatments are surface treatments that will not cure problems beneath the pavement such as a base failure or deterioration of the material beneath the asphalt pavement. Surface treatments work well where the distresses are limited to pavement surface deterioration, or where cracks are not severe.
The Preparation of the Quick-Drying Bitumen Emulsion for the Protection of the Road Surface Asphalt Concrete Layer. ... of the Russian Ministry of Transport, the surface treatment must complya number of important pointstoprovidetransport and operational characteristics of road surfaces. Thus, based on the functional purpose, surface treatment ...
Section 424—Bituminous Surface Treatment Page 2 Do not use unconsolidated limerock unless provided for in the Plans or Proposal. Use Class B aggregates only where the surface treatment is used for shoulder construction or where it is to be overlaid
BITUMINOUS SURFACE TREATMENT. Our version of a Bituminous Surface Treatment is a triple application process. This is a cost effective solution for improving stone roads and parking lots. An application of #57 aggregate is spread over the existing stone surface at a rate of 35 Lbs / SY.
On average, this equates to 9.6 linear miles of streets per section that require an annual asphalt surface treatment. Public Works staff identifies which street will require what type of surface treatment needed by using a rating scale called a pavement condition index (PCI). The PCI rates the condition of the surface of a road network.
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