Emulsified asphalts, fillers, virgin aggregates or recycled asphalt pavements rap. Full depth reclamation uses the materials from the deteriorated asphalt pavement, and, with the addition of cement, creates a new stabilized base. 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. Old asphalt and base materials are pulverized using a specialized machine called a reclaimer. After listening to the engineering manager on site, we suggested the full depth reclamation process. Longlife pavement design comparison of life cycle environmental costs for 20, 40 and 100 year pavement design lives using palate. In brazil, pavement design with full depth reclamation with cement fdrc is determined by empirical approaches. Guide to fulldepth reclamation fulldepth reclamation. If a long section of thick asphalt is selected for reclamation, the asphalt layer can be partially milled and the rap.
Then there is a second pass where liquid asphalt and. No part of this book may be reproduced in any form without permission in writing from. Construction inspection checklist full depth reclamation. Incorporating coldrecycling technologies such as fulldepth reclamation fdr in pavement rehabilitation strategies reduce environmental. Fulldepth reclamation of asphalt pavements with cement. For stabilized fulldepth reclamation sfdr, there was no guideline for ge at the time this project was initiated 2009. 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. 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. 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. Processes edit old asphalt and base materials are pulverized using a specialized machine called a reclaimer. Local calibration of stiffness modulus for fulldepth reclamation design. Full depth reclamation fdr has been defined kandhal and mallick 1997 as a recycling method where all of the asphalt pavement section and a.
Full depth asphalt reclamation propst construction. Pavement recycling guidelines for state and local governments participants reference book. Suggested construction specification for fulldepth reclamation. In addition the early application of traffic, as many of the. The full depth reclamation process is applicable to rehabilitate lowvolume roads with less than 1m esals 18,000 lb. Cir and hir consist of using a portion of the existing asphalt pavement as a new base or surface layer. Advantages of fulldepth pavement reclamation asphalt. Repairing pot holes and damaged asphalt areas is vital to protecting the overall life of your asphalt pavement. Field investigation of stabilized fulldepth reclamation sfdr. Fulldepth repairs for concrete pavements february 2012 road map track 7 concrete pavement maintenance and preservation authors jerod gross, p. This process allows complete reconstruction using 100% of existing pavement materials and grade, cross. Fdr for asphalt pavement with cement as the stabilizer was used as the base course.
Permeable pavement systems are not typically designed to provide stormwater detention of larger storms e. Additional stabilization may be obtained by introducing a stabilizing agent such as portland cement or lime. International airfield and highway pavements conference 2019. 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. 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. 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. Material properties of cold inplace recycled and fulldepth. Recycling sustainability pavements federal highway. A thorough project evaluation is essential for project selection, design and construction. Currently, mndot pavement design recommends granular equivalency, ge 1. 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. Developing standards and specifications for full depth.
However, cemented layers failure is critical on mechanisticempirical me design. Iowas best practices for full depth reclamation and cold. The report summarizes the work conducted during the development of procedures for conducting full depth reclamation of existing asphalt surfaced and unsurfaced roads. If conditions are uniform, coring in a typical area will be representative of the entire project. Fulldepth reclamation using portland cement southeast cement. Full depth recycling or full depth reclamation fdr, is a process that rebuilds worn out asphalt pavements by recycling the existing roadway processes. Save time, money, and the environment on your next asphalt paving project with full depth pavement reclamation.
Analysis of fulldepth reclamation trial sections in virginia. 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. Evaluation of fulldepth reclamation on strength and. In general, inplace pavement recycling remixes the insitu pavement material in some form and reuses it in the final pavement. Thickness design full depth asphalt pavement structures for highways and streets unknown on. Th e pca thickness design procedure can also be used pca eb068. Mix design for fulldepth reclaimed asphalt pavement with. Although not a preservation strategy, full depth reclamation fdr is a proven alternative to traditional reconstruction. Asphalt parking lots and private roadways take a beating every day from constant vehicle traffic. Fulldepth reclamation, fdr, pavement, cementtreated base, ctb, cement stabilization, longterm performance, soilcement. Fulldepth repairs for concrete pavements cp road map.
Fulldepth pavement reclamation with foamed asphalt in. Permeable pavement practices shall generally be combined with a separate facility to provide those controls. In this chapter, portland cement concrete pcc pavement distress types that require fulldepth repair are discussed, followed by the repair procedures. Structural evaluation of asphalt pavements with fulldepth. Ruston paving was contacted by kennemetal to reconstruct its aging parking lot. Save time, money, and the environment on your next asphalt paving project with fulldepth pavement reclamation. This process can include adding chemicals to the base layer in order to increase. Emulsified asphalts, fillers, virgin aggregates or recycled asphalt pavements rap can be added to maximize the effectiveness of the system. Asphalt repair and full depth asphalt replacement all.
Full depth recycling or full depth reclamation fdr, is a process that rebuilds worn out asphalt pavements by recycling the existing roadway. Full depth recycling news newspapers books scholar jstor. Design of fulldepth reclamation with portland cement fdrpc. Determine optimum moisture density curve proctor experience 4% optimum adjusted for foaming water 3. Full depth reclamation fdr is an efficient means of rehabilitating these pavements. Part of thecivil and environmental engineering commons this thesis is brought to you for free and open access by byu scholarsarchive. Incorporating coldrecycling technologies such as full depth reclamation fdr in pavement rehabilitation strategies reduce environmental. 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. 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. Harvey partnered pavement research program pprc strategic plan element 4. Fdr promotes the reuse of existing road materials and significantly reduces the use of fossil fuels and virgin resources such as aggregate and asphalt. 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.
Carry out laboratory testing to identify specimen preparation and test methods, and develop information for mix design, structural design, and construction guidelines. The two types of reclamation currently employed by mndot are. 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. 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. 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. Best practices for fulldepth reclamation using asphalt emulsions background 5 mixture designs for fdr projects stabilized with emulsion are varied. Design of fulldepth reclamation with portland cement fdr. For stabilized full depth reclamation sfdr, there was no guideline for ge at the time this project was initiated 2009. Material properties of cold inplace recycled and fulldepth reclamation. Measure properties on caltrans full depth pavement reclamation with foamed asphalt projects to be built in the future. 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. Fulldepth pavement reclamation with foamed asphalt.
The fullfactorial experimental design included five rap. A surface consisting of a thin bituminous chip seal, hotmix asphalt, or concrete completes the road. Once pavement damage makes movement cumbersome or hazardous, its time to replace the surface material. Fdr process must go deeper than the existing pavement. Failing areas can quickly deteriorate into larger and costlier repair needs. Usually only a few cores are necessary to provide the information to make a treatment decision. Methods in use are marshall, superpave, wirtgen wirtgen 2004, proctor aashto t99, modified proctor kim and labuz 2007, and unconfined compressive strengths. Development of improved mix and structural design and construction guidelines for full depth reclamation with foamed asphalt. Learn how full depth reclamation restores the life of. Fdr is an economical, inplace recycling alternative to road reconstruction.
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. Material properties of cold inplace recycled and fulldepth reclamation asphalt concrete 2017. 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. There are two different types of permeable pavement design configurations. Best practices for fulldepth reclamation using asphalt. A very popular reconstruction alternative is known as full depth reclamation fdr.
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. Best practices for full depth reclamation using asphalt emulsions background 5 mixture designs for fdr projects stabilized with emulsion are varied. 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. A very popular reconstruction alternative is known as fulldepth reclamation fdr. 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. Any variations in the existing section need documented to avoid errors in the mix design. Local calibration of stiffness modulus for fulldepth reclamation. In brazil, pavement design with fulldepth reclamation with cement fdrc is determined by empirical approaches. Our services include removal of old and warn asphalt at full depth, and replacement with new hot mix asphalt. 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. This method provides a very economic alternative to conventional construction methods by reusing the existing pavement material.
Existing pavement information existing pavement section cores with subgrade material down to 16 18 depth must be provided to allow proper fdr design mix. Development of improved mix and structural design and construction guidelines for fulldepth reclamation with foamed asphalt. This may be performed as cold inplace recycling cir, hot inplace recycling hir, or fulldepth reclamation fdr. Design standards, fulldepth reclamation, pavement cracking. 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. 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. Return to traffic of full depth reclamation pavements. Best practices for fulldepth reclamation using asphalt emulsions. This participants reference book was developed to support a 2day workshop on pavement recycling guidelines for state and local governments. Over the years, the pavement structure had failed and there were serious drainage issues that needed to be addressed.
A costeffective, longlasting greener alternative to deep rehabilitation or removal and replacement techniques. The recycled base will be stronger, more uniform, and more moisture resistant than the original. 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. Fdr promotes the reuse of existing road materials and significantly reduces the use of fossil fuels and. Determine optimum foaming 280320f binder pg 5234 or pg 4634 1. As a result, we felt that the time was right for recapturing the pavement engineering state of the art in a textbook. The thickness design for a reclaimed pavement is similar to that. 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. 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. Co 2 payback period using life cycle analysis savings are not immediately realized payback 3045 years in the future future is highly uncertain. Construction methods and equipment full depth reclamation case histories and qcqa structural design of recycled pavements. Developing standards and specifications for full depth pavement reclamation.
Full depth recycling or full depth reclamation fdr, is a process that rebuilds. Measure properties on caltrans fulldepth pavement reclamation with foamed asphalt projects to be built in the future. Other pavement materials, such as concrete, asphalt, or aggregate base go. 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 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. 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. 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.
Suggested construction specification for fulldepth. 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. This may be performed as cold inplace recycling cir, hot inplace recycling hir, or full depth reclamation fdr. Full depth reclamation and stabilized full depth reclamation.
566 32 151 1247 73 483 541 497 203 1294 548 110 1306 752 517 562 1420 604 982 1422 1110 1450 175 280 929 1235 1190 1392 588 1436 1127 421 894 1084 958 1129 639 1055 1223 96 766 1356 505 1093 680 271