This participants reference book was developed to support a 2day workshop on pavement recycling guidelines for state and local governments. Guide to fulldepth reclamation fulldepth reclamation. Two approaches in pavement design involve the structural number and granular equivalency. Fdr is an inplace recycling method for reconstruction of existing flexible pavements using the existing pavement section material as the base for the new roadwaywearing surface. Guidelines for project selection, design, and construction. Eb 15025 page 1 of 18 geotechnical engineering manual. Developing standards and specifications for full depth. Sustainable pavement rehabilitation according to the 2017 asce infrastructure report card, our nations roadway infrastructure is in poor condition. This checklist was created to complement the existing pavement preservation checklist series. Fulldepth reclamation using portland cement southeast cement. Measure properties on caltrans full depth pavement reclamation with foamed asphalt projects to be built in the future. Mix design structural pavement design construction manual traffic control plan owneragency requirements stabilizing agent.
Fdr is considered when the pavement is highly deteriorated or has deep cracking due to design deficiencies or an inadequate base. Old asphalt and base materials are pulverized using a specialized machine called a reclaimer. Aug 30, 2016 this 2016 asphalt pavement design guide has been prepared to assist readers in understanding asphalt mix pavement design, construction, and rehabilitation. Full depth reclamation with asphalt binders workshop january 21, 2020 11 first project was let in 1999 and the second in 20. Refer to guidelines and design process for full depth reclamation listed tn chapter 2. Section 7 of bulletin 27 bituminous concrete mixtures, design procedures and specifications for special bituminous mixtures. Full depth reclamation pulverized flexible pavement section creating a uniform stabilized base further stabilization obtained through. Association nor this documents authors, editors, design. The completed pavement is expected to last more than 20 years. Carry out laboratory testing to identify specimen preparation and test methods, and develop information for mix design, structural design, and construction guidelines. Based on these criteria a proper design can be developed. Full depth reclamation fdr full depth reclamation fdr case histories. Virginia experience past and present march 2, 2018 what is full depth reclamation fdr vdot experience outline virginia department of transportation. Fulldepth pavement reclamation with foamed asphalt in.
Although referred to as fulldepth reclamation, this process is just an extension of the basic cir principles to the entire hma pavement depth plus a predetermined depth of the base material. Long term cement pavement consumption outlook, march 2018. James crovetti, marquette university, department of civil and environmental engineering. Full depth asphalt reclamation the following seven entries consider fly ash in full depth reclamation of asphalt. Full depth asphalt reclamation the following seven entries consider fly ash in fulldepth reclamation of asphalt. Full depth reclamation is a reclamation technique in which the full flexible pavement section and a predetermined portion of the underlying materials are uniformly crushed, pulverized, or blended, resulting in a stabilized base course. Pavement design using fdr 2008 is the dividing line. Basic asphalt recycling manual 4 provides a valuable overview of full and.
Structural evaluation of asphalt pavements with full depth december 2012 reclaimed base 6. Nchrp 7a mechanisticempirical design of new and rehabilitated pavement structures, design guide nchrp 7a, trb, 2004. Full depth reclamation fdr is a recycling technique where the existing asphalt pavement and a predetermined portion of the underlying granular material are blended to produce an improved base course. Full depth reclamation fdr is one of the three major types of asphalt recycling techniques.
Code of federal regulations, title 23, part 626, pavement. Pca the portland cement association americas cement. Fulldepth reclamation, fdr, pavement, cementtreated base, ctb, cement stabilization, longterm performance, soilcement. In summary, full depth reclamation converts a wornout asphalt pavement into a stabilized base course. Critical elements for a successful full depth reclamation fdr project. Full depth recycling or full depth reclamation fdr, is a process that rebuilds worn out asphalt pavements by recycling the existing roadway processes. Full depth reclamation the le sueur county experience darrell pettis p. Quality asphalt pavement may be constructed in a wide range of soil, weather, and loading conditions. Learn how full depth reclamation restores the life of pavement structures that have deep structural issues while avoiding highcost pavement reconstruction. Full depth bituminous recycling of i70, thomas county, kansas, january 2004. Full depth reclamation is a pavement rehabilitation.
Key words asphalt pavement recycling fulldepth reclamation with cement. The pavement branch staff is available to assist district offices and consultant engineers in developing pavement designs. Full depth reclamation of asphalt pavement is a rehabilitation method that involves recycling an existing asphalt pavement and its underlying layers into. Full depth reclamation fdr shall consist of pulverizing reclaiming the existing flexible pavement and underlying materials base andor subgrade materials to the length, depth and width as specified or as shown on the plans, blending with a bituminous stabilizing agent either foamed. Guidelines for project selection, design and construction, which can be used in conjunction with the south african guidelines for the design and use of foamed bitumen. Full depth reclamation fdr is a recycling technique where the existing asphalt pavement and a. Save time, money, and the environment on your next asphalt paving project with full depth pavement reclamation. Fdr removes pavement crack patterns and eliminates reflective cracking.
There is an everincreasing backlog of rehabilitation needs with minimal resources. Learn how full depth reclamation restores the life of. Full depth reclamation process design overview 3 design criteria in order to design a mix to satisfy the objectives of the project the existing pavement must be investigated for structural adequacy, thickness, slope and crossfall as well as the visual appearance. Supplement to the aashto guide for design of pavement structures, part ii, rigid pavement design and rigid pavement joint design, aashto, 1998. Full depth reclamation fdr consists of pulverizing the asphaltwearing layer top of the road into the base material and evening the subbase material to depths of up to 300 mm. Apr 28, 2015 full depth reclamation pulverized flexible pavement section creating a uniform stabilized base further stabilization obtained through. Airport construction standards ac 150537010 airports. Full depth reclamation fdr techniques for pavement construction and rehabilitation have gained general recognition because of their technical, economical and environmental advantages. Rehabilitating an old pavement by pulverizing and stabilizing the existing. Highway administration fhwa pavement recycling reference book for state and. Maintenance schedule for cement additive sfdr design. Analysis of fulldepth reclamation trial sections in virginia brian k. Methods in use are marshall, superpave, wirtgen wirtgen 2004, proctor aashto t99, modified proctor kim and labuz 2007, and unconfined compressive strengths. Full depth reclamation new provision contract standards adds full depth reclamation fdr to section 542 of the 2012 standard specifications geotechnical summary tables rev form geotech adds tables for geotextile for pavement stabilization and aggregate subgrades tabilization.
Field investigation of stabilized fulldepth reclamation. The contractors are contractually required to follow only the printed bound book njdot standard specifications for road and bridge construction, 2007 green book pdf 5. Officials aashto procedure for pavement design, for example, uses a structural layer coefficient to model base. Full depth reclamation and stabilized full depth reclamation.
Guide to fulldepth reclamation fdr with cement by david r. E geotextile type a on all subgrades chapter 8 rigid pavement design. Although not a preservation strategy, full depth reclamation fdr is a proven alternative. Design standards, fulldepth reclamation, pavement cracking. Fulldepth reclamation of asphalt pavements with cement. Inplace recycling the national center for pavement. Fdr conserves materials by reusing pavement components. Full depth reclamation using foamed asphalt pdf full depth reclamation using cement pdf pulverization. Material properties of cold inplace recycled and fulldepth reclamation asphalt concrete 2017. These samples shall be used to establish the design rate of expanded asphalt as a per cent by mass of the unstabilized material. For mix design purposes, prior to commencing the work the contractor shall obtain samples representative of the material that is produced during inplace full depth reclamation. Fulldepth pavement reclamation with foamed asphalt. Pavement structural evaluation and design of full depth reclamation fdr pavement by tommy nantung, ph.
This manual provides personnel in design and construction general information on the full depth. Unconfined compressive strength of lime treated soils and aggregates. This guide presents examples of designs, procedures, and applications that have. Material properties of cold inplace recycled and fulldepth. Fulldepth reclamation for the rehabilitation of local roads. Best practices for fulldepth reclamation using asphalt. Design full depth reclamation kandhal and mallick 1997. When this publication, entitled standard specifications for roads and structures, dated january 2018, is incorporated by reference into the departments construction bid proposals or contracts.
Aashto pavement thickness design guide when designing pavement thickness for flexible and rigid pavements, the following considerations should be used. Analysis of full depth reclamation trial sections in virginia brian k. What is full depth reclamation fdr full depth reclamation is a pavement rehabilitation technique in which the full flexible pavement section and a predetermined portion of the underlying materials are uniformly crushed, pulverized or blended. Fulldepth reclamation using asphalt emulsion roadmixed perform full depth reclamation fdr using an inplace mixing process to obtain a homogenous mixture of the existing surface and the underlying base material with or without new material and additive added using an emulsified asphalt. Full depth pavement reclamation with foamed asphalt in california. Material properties of cold inplace recycled and full depth reclamation asphalt concrete presents procedures for determining material properties of coldrecycled asphalt mixtures for input to pavement structural design programs. Addition of aggregate addition of stabilizers liquid asphalt portland cement.
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. Key words asphalt pavement recycling fulldepth reclamation with cement pavement. Full depth reclamation was chosen over a more traditional remove and replace approach because deep underlying pavement problems could be resolved and structural performance targets could be met at a fraction of the cost. Finer, higher pi material was reclaimed and mixed with foamed asphalt.
The report describes full depth reclamation, and includes a summary of available literature, a best practices document, construction of two field projects, development of design and construction guidance documents, and training materials for full depth reclamation. Chapter 9 fulldepth flexible pavement design chapter 9. Full depth reclamation recycling fdr, or deep insitu, recycling of damaged hotmix asphalt hma pavement with foamed asphalt fa and an active filler such as portland cement or lime can provide a stabilized base for a new hotmix asphalt wearing course. Materials and mix design, construction methods and equipment, case histories and quality control quality assurance have been discussed for all recycling methods. Recommended construction guidelines for full depth. Best practices for fulldepth reclamation using asphalt emulsions background 5 mixture designs for fdr projects stabilized with emulsion are varied. Review the full gradation and compare it to the gradation used in the mix design to see if it is finer or coarser. Evaluation of fulldepth reclamation on strength and. Updated 2007 standard specifications for road and bridge construction pdf 8m. A very popular reconstruction alternative is known as full depth reclamation fdr. Trbs national cooperative highway research program nchrp research report 863. Pavement structural evaluation and design of fulldepth.
First project experienced severe rutting and cracking. Provides individual specifications from ac 150537010, standards for specifying construction of airports, including construction standards for general provisions, earthwork, flexible base courses, rigid base courses, flexible surface courses, rigid pavement, fencing, drainage, turfing, lighting installation, pavement rejuvenation. Type a certification or equivalent equipped to carry out expanded asphalt mix design. To view the entire ac and the latest errata sheet, select the complete ac link below. In many studies the use of lime with fly ash is also considered. Emulsified asphalts, fillers, virgin aggregates or recycled asphalt pavements rap can be added to maximize the effectiveness of the system. Acknowledgments this guide builds on the 2001 asphalt pavement design guide written and developed under the direction of dr. The following standards are from ac 150537010h, standards for specifying construction of airports. The pavement branch in the division of highway design is responsible for overseeing the development of pavement structural designs for all kentucky transportation cabinet projects. A 2week notice to the engineerincharge and the regional. Although not a preservation strategy, full depth reclamation fdr is a proven alternative to traditional reconstruction. Analysis of fulldepth reclamation trial sections in virginia. Research scientist introduction pavement recycling has become an increasingly common technology to restore the. Using the materials properties measured in the lab and the.
On top of the pulverized material, water is added to reach the optimal moisture content for compaction and then a variety of materials, such as dry. Best practices for fulldepth reclamation using asphalt emulsions. Fdr promotes the reuse of existing road materials and significantly reduces the use of. Reclaiming associations basic asphalt recycling manual. Guidelines for fulldepth reclamation of cracked asphalt concrete as stabilized or unstabilized bases, is to develop improved mix and structural design and construction guidelines for fulldepth reclamation fdr of cracked hotmix asphalt with foamed asphalt fdrfa. Fdr can be used to depths of 300 mm 12 inches or more but the most typical applications involve depths of between 150 and 225 mm 6 and 9 inches better roads, 2001 1. Txdot specifications 2014 english special specifications to. Fdr fulldepth reclamation performancebased design, construction, and quality control. Construction inspection checklist full depth reclamation. Full depth reclamationrecycling fdr this rehabilitation procedure entails pulverizing the old pavement structure, blending in a stabilizing agent.
Other indications that a road could use fdr are frequent transverse and lateral cracking, reflective cracking, severe rutting. Quality base material produced using full depth reclamation. Full depth reclamation is a pavement rehabilitation technique in which the full flexible pavement section and a predetermined portion of the underlying materials are uniformly crushed, pulverized or blended. Pavement pres 1 pervious concrete making the impossible possible pres 2 i85 rcc shoulder construction in nc pres 3 full depth reclamation fdr virginia experience past and present pres 4 engineering more sustainable pavements pres 5 vdot mechansticempirical pavement design mepdg implementation pres 6, a tool for. For pavements with adequate structure design an hma layer to handle the predicted traffic loads. Th ickness design for full depth reclamation is similar to that of a cementtreated base and is calculated based on strength of the material, strength and sti. Best practices for full depth reclamation using asphalt emulsions background 5 mixture designs for fdr projects stabilized with emulsion are varied. Most of this entails the use of cold inplace recycling of asphalt pavements. A comprehensive study on full depth reclamation fdr of pavements with foamed asphalt has been completed for the california department of transportation by the university of california pavement. This specification covers the requirements for inplace full depth reclamation of the existing hot mix. Chapter 9 full depth flexible pavement design chapter 9. Evaluation of full depth reclamation on strength and durability of pavement base layers benjamin earl griggs department of civil and environmental engineering master of science the purpose of this research was to determine the effect of full depth reclamation fdr on the strength and durability of aggregate base layers in a coordinated approach. Materials division business virginia department of. Structural evaluation of asphalt pavements with fulldepth.
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