Full Depth Reclamation with Asphalt Binders Workshop October 16, 2018 14 Move away from one-time-use specifications so all project lettings use the same Statewide specification Harmonize the special specifications to have similar content and intent. Include similar language and format from 2014 specifications for treatment Items using cement,
This type of stabilization uses asphalt emulsion, asphalt cement or foamed asphalt. Asphalt stabilized pavements have improved fatigue and load-carrying properties but, with typical voids contents exceeding 10 percent, are not equivalent to HMA. Combining Portland cement or lime with asphalt stabilization can provide additional strength.
still hot.(Hot mix asphalt may be placed by hand when it is impractical to use a paver.) Asphalt pavements are constructed of one or more courses of hot mix asphalt placed directly on the subgrade or on a subbase. HOT MIX ASPHALT SPECIFICATIONS All work involving hot mix asphalt …
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This specification covers the requirements for in-place full depth reclamation of bituminous pavement and mixing with a portion of the underlying granular, and shaping and compacting the processed materials as granular base. 330.01.01 Specification Significance and Use
This process can include adding chemicals to the base layer in order to increase its strength capacity. The treatment of the base layer and recycled asphalt provides a stronger foundation for present and future traffic. This process effectively produces a cost-effective solution that maximizes limited budgets.
Asphalt Pulverization Recycling saves the cost of excavating the old base, as well as the cost of importing new base materials. The options are simple. Bring in new aggregate at considerable cost or recycle your existing asphalt to create a new base at minimal cost. Some benefits of Asphalt Pulverization Recycling are:
May 12, 2017· Absolute viscosity A measure of the viscosity of asphalt with respect to time, measured in poises, conducted at 60°C (140°F). Aggregate A collective term for the mineral materials such as sand, gravel and crushed stone that are used with a binding medium (such as water, bitumen, portland cement, lime, etc.) to form compound materials (such as asphalt concrete, portland cement concrete, etc.).
Powerful PRS pulverizing machines can cut to depths of 18 inches. We will pulverize the existing asphalt concrete and blend it with the underlying material to form a higher-quality aggregate base. Our pulverization services are available with or without complete Full-Depth Reclamation, which combine soil stabilization and pulverization.
Full Depth Reclamation also known as Pulverizing is a road rehabilitation method in which the full thickness of the asphalt pavement and a portion of the underlying granular material is uniformly pulverized, mixed and re-blended to create a uniform and consistent blend of road base material.
In-place processing consists of self-propelled pulverizing units that break up and crush the existing asphalt concrete, (typically up to a depth of about 100 mm (4 in)) and underlying granular material to a total maximum depth of 200 mm (8 in) and thoroughly mix the materials in place.
processing phases. The first or pulverization phase shall consist of milling and mixing the asphalt concrete and base course materials to specified depths such that of the pulverized asphalt material is smaller than 40 mm, and a minimum of 95% of the material is smaller than 25 mm.
Mar 26, 2013· Asphalt pulverizing makes an extremely durable and long-lasting surface. The intermixing of all the existing materials, including base layers, increases structural strength. In fact, maintenance needs are frequently reduced for pulverized surfaces! Need help rehabilitating your paving surfaces or considering asphalt pulverizing?
Asphalt pulverization is a method of pavement rehabilitation that consists of pulverizing and grinding together the distressed layer of existing asphalt pavement along with a portion of the underlying base, grading and compacting the resulting mixture, creating a revitalized aggregate base.
Pulverizing and Milling. Full Depth Reclamation (FDR), often known as pulverizing, is a rehabilitation technique in which the full thickness of the asphalt pavement and a predetermined portion of the underlying materials is uniformly pulverized and blended to provide a stronger, homogeneous material.
Effective with the December 2019 Letting 176 2020 Standard Specifications Section 460 Hot Mix Asphalt Pavement 460.1 Description (1) This section describes HMA mixture design, providing and maintaining a quality management program for HMA mixtures, and constructing HMA pavement.
39 HOT MIX ASPHALT ... The specifications are expressed in U.S. customary units except where a referenced document uses the International System of Units as the standard. Unless an object or activity is specified to be less than the total, the quantity or amount is all of the object
Using an asphalt grinder of any type on chip seal, thin or badly alligatored asphalt has almost always yielded a lot of broken edges and big chunks in the finished product. The patented ZipTec™ Enhanced Pulverizing System solves the chunk problem by not allowing oversized chunks to escape the teeth of the machine until they are sufficiently ground up.
Advantages of Full-Depth Pavement Reclamation. ... Also known as asphalt pulverization, full-depth reclamation is a construction rehabilitation technique of removing the distressed layer of existing asphalt, blending it with the existing stone base, and creating a recycled usable base for the new asphalt. ...
Effective with the December 2019 Letting 133 2020 Standard Specifications Section 325 Pulverized and Re-laid Pavement 325.1 Description (1) This section describes full depth in-place pulverizing of the existing asphaltic pavement along with a portion of the underlying base and relaying the pulverized material to construct a new base.
Reclaimed asphalt pavement (RAP) is the term given to removed and/or reprocessed pavement materials containing asphalt and aggregates. These materials are generated when asphalt pavements are removed for reconstruction, resurfacing, or to obtain access to buried utilities.
ASPHALT & CONCRETE SPECIFICATIONS Revised 03/15/2011 Bids and Contracts: Asphalt & Concrete Specifications 3 of 10 Compaction shall start as soon as possible after mixing and the elapsed time between and addition of water to the Cement Treated Base mixture and the start of compaction shall not exceed 60 minutes.
Best Practices for Full-Depth Reclamation Using Asphalt Emulsions Background 5 Mixture designs for FDR projects stabilized with emulsion are varied. Methods in use are Marshall, Superpave, Wirtgen (Wirtgen 2004), Proctor (AASHTO T99), modified Proctor (Kim and Labuz 2007), and unconfined compressive strengths.
Of this amount, 80 million tons (80 percent) are recycled as “reclaimed asphalt pavement” (RAP) (Bloomquist et al. 1993). Additionally, in-place recycling techniques can also be used to resurface an existing pavement or pulverize an existing pavement for use as base material. Reclaimed Asphalt Pavement (RAP)
Jun 14, 2013· Wirtgen WR 2400 Road Reclaimer Milling Asphalt Machine operating heavy equipment action video Addison Township, Lakeville and Leonard Michigan Rochester Road Restoration Project 2013 road ...
2004 English Special Specifications to Items 3000 - 3999 Surface Courses and Pavement (All) ... Sale of Salvage Reclaimed Asphalt Pavement ... Hot In-Place Recycling of Asphalt Concrete Surfaces (HIR) - Removes scarifying and pulverizing from the original specification and addresses material sampling, mix design, Hamburg requirements and QC/QA.
Pulverizing | Milling | Road Widening. Full-depth reclamation (FDR) is a roadway recycling process, formerly known as pulverizing, in which all of the pavement and some of the underlying material is pulverized and treated with an additive to produce an improved, stabilized base. ... Where full-depth reclamation (pulverization) turns asphalt ...
The four main steps in this process are pulverization, introduction of additive, compaction, and application of a surface or a wearing course. ... Asphalt Emulsion - A combination of asphalt, water, and small amount of an emulsifying agent ... restore aged asphalt to desired specifications.
Asphalt Pulverization. Pulverization describes the process of milling or grinding the surface of the asphalt and blending it in with the base underneath. This strengthens the base and creates a stronger foundation to build upon. Pavement pulverizing is a very effective and revolutionary method of reconstructing asphalt that is no longer effective.
According to the Asphalt Recycling and Reclaiming Association (ARRA), stabilization can be done mechanically, chemically or with asphalt additives. Each method begins by pulverizing the existing pavement layers and into the underlying base, sub-base or sub-grade layers.