Fdr for asphalt pavement with cement as the stabilizer was used as the base course. Methods in use are marshall, superpave, wirtgen wirtgen 2004, proctor aashto t99, modified proctor kim and labuz 2007, and unconfined compressive strengths. Guide to fulldepth reclamation fulldepth reclamation. Structural evaluation of asphalt pavements with fulldepth. Full depth recycling news newspapers books scholar jstor.
Full depth reclamation fdr has been defined kandhal and mallick 1997 as a recycling method where all of the asphalt pavement section and a. 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. Full depth reclamation in the united states increasingly is being selected by cities, counties, state departments of transportation, federal agencies, airports and consulting engineers to reconstruct severely deteriorated asphalt pavements. If conditions are uniform, coring in a typical area will be representative of the entire project. Iowas best practices for full depth reclamation and cold. In this chapter, portland cement concrete pcc pavement distress types that require fulldepth repair are discussed, followed by the repair procedures. The procedures in the evaluation process that must be completed are 1 conducting a pavement condition survey, 2 pavement coring or placing test holes, 3 sampling of the asphalt pavement, any granular base and subgrade, 4 laboratory testing of. 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.
Developing standards and specifications for full depth. Development of improved mix and structural design and construction guidelines for full depth reclamation with foamed asphalt. However, cemented layers failure is critical on mechanisticempirical me design. Incorporating coldrecycling technologies such as fulldepth reclamation fdr in pavement rehabilitation strategies reduce environmental. Pavement recycling guidelines for state and local governments participants reference book. Once pavement damage makes movement cumbersome or hazardous, its time to replace the surface material. Full depth reclamation fdr is an efficient means of rehabilitating these pavements. Best practices for fulldepth reclamation using asphalt. Co 2 payback period using life cycle analysis savings are not immediately realized payback 3045 years in the future future is highly uncertain. Existing pavement information existing pavement section cores with subgrade material down to 16 18 depth must be provided to allow proper fdr design mix. A very popular reconstruction alternative is known as fulldepth reclamation fdr. Suggested construction specification for fulldepth reclamation. For stabilized fulldepth reclamation sfdr, there was no guideline for ge at the time this project was initiated 2009.
Emulsified asphalts, fillers, virgin aggregates or recycled asphalt pavements rap. Fulldepth reclamation, fdr, pavement, cementtreated base, ctb, cement stabilization, longterm performance, soilcement. Although referred to as full depth 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. Also known as asphalt pulverization, fulldepth 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. No part of this book may be reproduced in any form without permission in writing from. Evaluation of fulldepth reclamation on strength and. Thickness design full depth asphalt pavement structures for highways and streets unknown on. Ruston paving was contacted by kennemetal to reconstruct its aging parking lot. This may be performed as cold inplace recycling cir, hot inplace recycling hir, or full depth reclamation fdr. Harvey partnered pavement research program pprc strategic plan element 4. Evaluation of fulldepth reclamation on strength and durability of pavement base layers benjamin earl griggs brigham young university provo follow this and additional works at. Determine optimum moisture density curve proctor experience 4% optimum adjusted for foaming water 3. Fulldepth 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.
Then there is a second pass where liquid asphalt and. Other pavement materials, such as concrete, asphalt, or aggregate base go. Material properties of cold inplace recycled and fulldepth. Fdr process must go deeper than the existing pavement. This process allows complete reconstruction using 100% of existing pavement materials and grade, cross. The report summarizes the work conducted during the development of procedures for conducting full depth reclamation of existing asphalt surfaced and unsurfaced roads. The full depth reclamation process is applicable to rehabilitate lowvolume roads with less than 1m esals 18,000 lb. Fulldepth reclamation using portland cement southeast cement. Jul 16, 2014 full depth reclamation of various county roads, including but not limited to asphalt concrete overlay of roadway, adjusting utility covers, guard rails, applying striping, installing delineators, repairing pavement structural section, cold planing, shoulder backing, and such other items or details, not mentioned above, that are required by the plans and standard specifications. For stabilized full depth reclamation sfdr, there was no guideline for ge at the time this project was initiated 2009.
Return to traffic of full depth reclamation pavements a thesis is submitted in partial fulfillment of the requirements for the degree of masters of science in civil engineering by robert benjamin hill university of arkansas bachelor of science in. Th e ability of a pavement base to carry loads depends on the strength of the base material and the depth of the base layer. Analysis of fulldepth reclamation trial sections in virginia. Full depth reclamation of asphalt pavements using asphalt emulsions aefdr is a process that recycles and rejuvenates the existing asphalt pavement surface, base, and, sometimes, the subgrade, providing an improved underlying structure for the new asphalt pavement. Fdr promotes the reuse of existing road materials and significantly reduces the use of fossil fuels and virgin resources such as aggregate and asphalt. International airfield and highway pavements conference 2019. After listening to the engineering manager on site, we suggested the full depth reclamation process. Best practices for full depth reclamation using asphalt emulsions background 5 mixture designs for fdr projects stabilized with emulsion are varied. Full depth reclamation recycling fdr this rehabilitation procedure entails pulverizing the old pavement structure, blending in a stabilizing agent, compacting, adding additional material, and resurfacing. A costeffective, longlasting greener alternative to deep rehabilitation or removal and replacement techniques. Design of fulldepth reclamation with portland cement fdrpc. In general, inplace pavement recycling remixes the insitu pavement material in some form and reuses it in the final pavement. Part of thecivil and environmental engineering commons this thesis is brought to you for free and open access by byu scholarsarchive.
Jul 16, 2014 full depth reclamation is a recycling process in which the entire thickness of asphalt pavement and a predetermined thickness of base material is pulverized, blended and stabilized using some type. Design of fulldepth reclamation with portland cement fdr. Fulldepth pavement reclamation with foamed asphalt. 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. Measure properties on caltrans fulldepth pavement reclamation with foamed asphalt projects to be built in the future. The procedures in the evaluation process that must be completed are 1 conducting a pavement condition survey, 2 pavement coring or placing test holes, 3 sampling of the asphalt pavement, any granular base and subgrade, 4 laboratory testing of materials, 5 pavement structural design, and 6 an economic analysis for initial and life. The asphalt recycling and reclaiming association arra defines fdr as, 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.
Full depth asphalt reclamation propst construction. Local calibration of stiffness modulus for fulldepth reclamation. Save time, money, and the environment on your next asphalt paving project with full depth pavement reclamation. Jan 09, 2008 a comprehensive, stateoftheart guide to pavement design and materials with innovations ranging from the advent of superpave, the data generated by the long term pavement performance ltpp project, to the recent release of the mechanisticempirical pavement design guide developed under nchrp study 7a, the field of pavement engineering is experiencing significant development. Longlife pavement design comparison of life cycle environmental costs for 20, 40 and 100 year pavement design lives using palate. Old asphalt and base materials are pulverized using a specialized machine called a reclaimer. Additional stabilization may be obtained by introducing a stabilizing agent such as portland cement or lime. The two types of reclamation currently employed by mndot are. Over the years, the pavement structure had failed and there were serious drainage issues that needed to be addressed. Measure properties on caltrans full depth pavement reclamation with foamed asphalt projects to be built in the future. In brazil, pavement design with full depth reclamation with cement fdrc is determined by empirical approaches. There are two different types of permeable pavement design configurations. If a long section of thick asphalt is selected for reclamation, the asphalt layer can be partially milled and the rap. 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.
Fdr promotes the reuse of existing road materials and significantly reduces the use of fossil fuels and. Currently, mndot pavement design recommends granular equivalency, ge 1. Fulldepth pavement reclamation with foamed asphalt in. Failing areas can quickly deteriorate into larger and costlier repair needs. Full depth recycling or full depth reclamation fdr, is a process that rebuilds worn out asphalt pavements by recycling the existing roadway processes.
Design standards, fulldepth reclamation, pavement cracking. In brazil, pavement design with fulldepth reclamation with cement fdrc is determined by empirical approaches. Recycling sustainability pavements federal highway. The recycled base will be stronger, more uniform, and more moisture resistant than the original. Save time, money, and the environment on your next asphalt paving project with fulldepth pavement reclamation. In addition the early application of traffic, as many of the. Local calibration of stiffness modulus for fulldepth reclamation design. Full depth reclamation uses the materials from the deteriorated asphalt pavement, and, with the addition of cement, creates a new stabilized base. Suggested construction specification for fulldepth. Return to traffic of full depth reclamation pavements a thesis is submitted in partial fulfillment of the requirements for the degree of masters of science in civil engineering by robert benjamin hill university of arkansas bachelor of science in civil engineering, 2011 may 20 university of arkansas. Construction inspection checklist full depth reclamation. Construction methods and equipment full depth reclamation case histories and qcqa structural design of recycled pavements.
Permeable pavement systems are not typically designed to provide stormwater detention of larger storms e. The fullfactorial experimental design included five rap. Full depth recycling or full depth reclamation fdr, is a process that rebuilds worn out asphalt pavements by recycling the existing roadway. Fulldepth reclamation of asphalt pavements with cement. A very popular reconstruction alternative is known as full depth reclamation fdr. Full depth reclamation and stabilized full depth 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. Developing standards and specifications for full depth pavement reclamation. Mix design for fulldepth reclaimed asphalt pavement with. Permeable pavement practices shall generally be combined with a separate facility to provide those controls.
Determine optimum foaming 280320f binder pg 5234 or pg 4634 1. Fdr is an economical, inplace recycling alternative to road reconstruction. Repairing pot holes and damaged asphalt areas is vital to protecting the overall life of your asphalt pavement. Guide to full depth reclamation with cement ix streetpave design procedure 44 alternate pavement design assuming bonding between the slab and fdr layer 44 joint spacing 47 chapter 5 field sampling and mix design mixing49 obtain field samples 50 core or auger sampling 52 block samples 53 frequency of sampling 53 highways and airports 53. Field investigation of stabilized fulldepth reclamation sfdr. Evaluation of full depth reclamation on strength and durability of pavement base layers benjamin earl griggs brigham young university provo follow this and additional works at. Th e pca thickness design procedure can also be used pca eb068. As a result, we felt that the time was right for recapturing the pavement engineering state of the art in a textbook. Materials and mix design, construction methods and equipment, case histories and quality control quality assurance have been discussed for all recycling methods.
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. Fulldepth repairs for concrete pavements february 2012 road map track 7 concrete pavement maintenance and preservation authors jerod gross, p. This may be performed as cold inplace recycling cir, hot inplace recycling hir, or fulldepth reclamation fdr. Material properties of cold inplace recycled and fulldepth reclamation asphalt concrete 2017. Asphalt parking lots and private roadways take a beating every day from constant vehicle traffic. A surface consisting of a thin bituminous chip seal, hotmix asphalt, or concrete completes the road. Usually only a few cores are necessary to provide the information to make a treatment decision. Best practices for fulldepth reclamation using asphalt emulsions background 5 mixture designs for fdr projects stabilized with emulsion are varied. The thickness design for a reclaimed pavement is similar to that.
Full depth recycling or full depth reclamation fdr, is a process that rebuilds. Full depth reclamation fdr is an engineered rehabilitation technique in which the full thickness of the asphalt pavement and a predetermined portion of the underlying materials base, subbase andor subgrade is uniformly pulverized and blended to provide an upgraded, homogeneous. Emulsified asphalts, fillers, virgin aggregates or recycled asphalt pavements rap can be added to maximize the effectiveness of the system. Return to traffic of full depth reclamation pavements. Cir and hir consist of using a portion of the existing asphalt pavement as a new base or surface layer. Fulldepth repairs for concrete pavements cp road map. This method provides a very economic alternative to conventional construction methods by reusing the existing pavement material. Any variations in the existing section need documented to avoid errors in the mix design. Full depth asphalt reclamation fdr is a technique in which an existing deteriorated asphalt pavement and a portion of the underlying soil materials are uniformly pulverized and blended to form a stabilized base course. Carry out laboratory testing to identify specimen preparation and test methods, and develop information for mix design, structural design, and construction guidelines. It uses a powerful reclaiming machine to turn an old asphalt pavement into a road base by uniformly pulverizing that full thickness of the old pavement and blending it with a portion of underlying material. 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. Learn how full depth reclamation restores the life of.
Best practices for fulldepth reclamation using asphalt emulsions. Development of improved mix and structural design and construction guidelines for fulldepth reclamation with foamed asphalt. Currently, the minnesota department of transportation mndot pavement design recommends a granular equivalency value ge of 1 for nonstabilized fulldepth reclamation material fdr, which is equivalent to class 5 material. Processes edit old asphalt and base materials are pulverized using a specialized machine called a reclaimer. A thorough project evaluation is essential for project selection, design and construction.
Incorporating coldrecycling technologies such as full depth reclamation fdr in pavement rehabilitation strategies reduce environmental. Asphalt repair and full depth asphalt replacement all. This process can include adding chemicals to the base layer in order to increase. Although not a preservation strategy, full depth reclamation fdr is a proven alternative to traditional reconstruction. Material properties of cold inplace recycled and fulldepth reclamation. 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. 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. Our services include removal of old and warn asphalt at full depth, and replacement with new hot mix asphalt. Advantages of fulldepth pavement reclamation asphalt. 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. This participants reference book was developed to support a 2day workshop on pavement recycling guidelines for state and local governments.
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