Then, mixture samples are prepared and laboratory test results are compared to design criteria. It is a mix design system that can be used for every type of pavement from golf cart paths and parking lots to the 400 series highways. Wsdot uses the superpave mix design method also commonly called the gyratory mix design method. One of the principal results from the strategic highway research program shrp was the superpave mix design method.
The product of the shrp asphalt research program thomas w. Superpave mix design criteria table 6103 412 superpave virgin asphalt grades used for various %s of rap table 6104 4 ncdot master job mix formula procedures 4 composition of recycled mixtures jmf 414 project file job mix formula procedures 415. Asphalt institute 2001 superpave mix design series no. Much of the material contained in this manual was originally produced by the asphalt. The compaction devices from the hveem and marshall procedures have been replaced by a. The new mix design accounts for traffic loading and environmental conditions and includes a new method of evaluating the asphalt mixture. Using rap in the superpave mix design system mike anderson, asphalt institute cupga 2005. Superpave overview nthe final product of the shrp asphalt program area is superpave. Materials selection binder the design process starts with material selection. Superpave this workshop is intended to demonstrate the superpave asphalt mixture design system developed by the strategic highway research program shrp, along with the application of certain innovative concepts in field management of asphalt mixes. This section briefly discusses the superpave mix design method wapa pavement note on mix design. Description construct a hotmix asphalt hma pavement layer composed of a compacted, superpave sp mixture of aggregate and asphalt binder mixed hot in a mixing plant.
Batch, mix, and compact more samples with this gradation with four asphalt contents. Harrigan strategic highway research program ronald j. Superpave mix design specifies aggregate gradation control points, through which. Download directly book superpave mix design manual sp2 pdf download is absolutely free and you can choose the format pdf, kindle, epub, iphone and mobi, etc superpave mix design manual sp2 pdf complete superpave mix design manual sp2 available in formats pdf, kindle, epub, itunes and mobi also. The volumetric analysis common to the hveem and marshall methods provides the basis for the superpave mix design method. Pdf comparison of marshall and superpave asphalt design.
This method may be used with laboratoryprepared specimens, as in the mix design process, or with plantmixed material during construction. History of design air voids national asphalt pavement. Mack, deputy chief engineer, new york state dot retired, whose energies and commitment have long served the trb superpave committee. This course provides an overview of the superpave mix design for local agencies and adjustments needed to start transitioning to the new mix design.
Mix design procedures for superpave mi xes that contai n rap shal l be i n acco rdance w ith the recommendati ons i n. The answer is yes comparing my copy of sp2 to my friends sp1, the two books have a lot of overlap, but sp2 has less detail about asphalt selection. The primary features of marshall mix design are a densityvoids analysis and the stabilityflow test. First, design compaction levels are established and materials are selected and characterized. Asphalt institute ms2 7th edition 2014 asphalt mix design methods ingilizce orijinal. Description construct a hot mix asphalt hma pavement layer composed of a compacted, superpave sp mixture of aggregate and asphalt binder mixed hot in a mixing plant.
Recommended thickness design software for roadways. Nov 12, 2014 superpave versus marshall method of mix design marshall method, despite its shortcomings, is still probably the most widely used mix design method in the world. Trbs national cooperative highway research program nchrp report 567. Superpave gyratory method washington asphalt pavement. Superpave is an overarching term for the results of the asphalt research portion of the 1987 1993 strategic highway research program shrp. Prior to superpave, marshall mix design was widely used in the united states, and is by far, the most commonly used asphalt mixture design procedure worldwide. Volumetric requirements for superpave mix design examines whether changes to the recommended superpave mix design criteria for voids in mineral aggregate, voids filled with asphalt, and air voids content might further enhance the performance and durability of hot mix asphalt. Superpave versus marshall method of mix design marshall method, despite its shortcomings, is still probably the most widely used mix design method in the world. One of the key components of superpave is materials selection. However, the existing superpave design system does not properly address perform. Acknowledgments becky mcdaniel, purdue university principal investigator, nchrp 912 research ed harrigan, nchrp senior program officer, nchrp 912 tim murphy, consultant. Aggregate sizes of the mix design should be checked prior to use in thinner lifts.
Superpave asphalt mixture design workshop developed by the asphalt team thomas harman 202 4933072 federal highway administration, hrdi11 6300 georgetown pike, mclean, va 22101 john dangelo 202 3660121 john bukowski 202 3661287 federal highway administration, hipt 400 seventh street, s. Superpave mix design 48 determining the design asphalt content the selected trial blend becomes the design aggregate structure. Design traffic level million esals2 coarse aggregate angularity. Pdf the quality of asphalt concrete in flexible pavements plays a major. Payment adjustments will apply to hma placed under this specification unless the hma is deemed exempt in accordance with section 344. Compacted samples of the superpave mix are used to determine the volumetric and mechanical properties during the mix design phase and for quality controlquality assurance during construction. Like the hveem and marshall methods, the superpave method has been proven to produce quality hma from which longlasting pavements can be constructed. A manual for design of hotmix asphalt with commentary incorporates the many advances in materials characterization and hotmix asphalt hma mix design technology developed since the conclusion of the strategic highway research program shrp. A superpave mix design includes several processes and decision points. The superpave mix design manual for new construction and.
The ontario ministry of transportation started implementation of superpave in the late 1990s and by 2006, superpave mix design technology was standard practice on all mto projects. Pavexpress is a free online tool to create pavement designs using key engineering inputs, based on the aashto 1993 and 1998 supplement pavement design process and equations. Understanding superpave mix design federal highway administration 1995 video vh353 superpave, superior performing asphalt pavements, is presented as the mix design system for the next century. Sheikh edrees, comparison of marshall and superpave asphalt design methods for sudan pavement mix es, international journal of scientific and technical advancements. Generally, this results in a paving mix which is coarser, has less sand, and less liquid asphalt. Full details of the superpave asphalt binder specification. Kennedy university of texas at austin michael anderson the asphalt institute strategic highway research program national research council washington, dc 1994. The superpave mix design method was designed to replace the hveem and marshall methods. Refinements to the concepts of asphalt mix design procedures came about not only with. Superpave in 1998, the mainedot changed its method of designing hot mix for maine roads. The superpave gyratory method of laboratory compaction is also shown. Properties considered in mix design superpave mix design method. Major steps in superpave nselection of materials, nselection of a design aggregate structure, nselection of the design binder content,and nevaluation of moisture sensitivity of the design mixture.
Calculating design life esals for superpave paving courses, the specification of 65 gyration asphalt mix designs will not be allowed on projects let after december 30, 2016. The superpave mix design manual for new construction and overlays ronald j. The relative proportions of these materials determine the physical properties of the hma and ultimately how the hma performs as a finished pavement. Experimental characterization of rutting performance of hma designed with aggregate gradations according to superpave and marshall methods. Superpave consists of 1 an asphalt binder specification, 2 an hma mix design method and 3 hma. Under the guidance of the trb superpave committee and the expert task group on communications, the report was drafted by neil f. Using rap in the superpave mix design system mike anderson, asphalt institute cupga 2005 victoria, bc november 6, 2005. The superpave trademark mix design system software contains a database of 5,3 united states and 1,515 canadian weather stations, which can be used to select a suitable performance grade of asphalt binder for a paving project, based on prevailing weather conditions in the area. The superpave mix design manual for new construction and overlays. The superpave mix design method was designed to replace the hveem and marshall. Mix design procedures and tests shall be in accordance with aashto r 35 except as noted below.
Its pretty much as i expected its the manual for how to design a pavement using superpave. These volumetric properties are then evaluated to select a mix design or to control the mixture quality during production. This manual gives detailed consideration to the superpave mix design procedures. A manual for design of hotmix asphalt with commentary. The change involved a switch from the old hveem design method to the superpave design method. Volumetric requirements for superpave mix design examines whether changes to the recommended superpave mix design criteria for voids in mineral aggregate, voids filled with asphalt, and air voids content might further enhance the performance and durability of hotmix asphalt. History of design air voids marshall mix design set up in late 1940s design voids set at 3 to 5% marshall mix compaction standard rolling train static steel wheel pneumatic tired 8% will densify under traffic to 4% density at end of life design density.
Superpave design aggregate structure considering uncertainty. Superpave performance by design final report of the trb superpave committee. Volumetric requirements for superpave mix design the. Average daily traffic adt greater than 15,000 recommended minimum lift thickness 2 9. The superpave system ties asphalt binder and aggregate selection into the mix design process, and considers traffic and climate as well. Mar 20, 2007 sharing knowledge of the superpave procedures throughout the highway industry will speed the implementation of superpave as the standard asphalt binder selection and mix design. This text will explain the method of compacting samples of the superpave mix using the superpave gyratory compactor and determining their percent compaction. Read a manual for design of hotmix asphalt with commentary. Properties considered in mix design superpave mix design. Cominsky university of texas at austin with contributions by.
The superpave regional centers are a unique source of expertise and assistance for highway agencies in their quest to build better, longer lasting roads. Mix design in hot mix asphalt, binder and aggregate are blended together in precise proportions. Superpave volumetric mix design and analysis volume i i. The key aspect to the performance of any asphalt mixture is the selection of the optimum materials that will be used in the mixture. Trbs national cooperative highway research program nchrp report 673. This section briefly discusses the superpave mix design method.
Sharing knowledge of the superpave procedures throughout the highway industry will speed the implementation of superpave as the standard asphalt binder selection and mix design. The only acceptable asphalt mix designs will be 50 gyrations c mix vs. One thing i had been wondering prior to purchase was, is there a difference between sp1 and sp2. Understanding superpave mix design superpave, superior performing asphalt pavements, is presented as the mix design system for the next century. Practice for superpave volumetric design for hot mix asphalt hma aashto r 35 glossary air voids va the total volume of the small pockets of air between the coated aggregate particles throughout a compacted paving mixture, expressed as percent of the bulk volume of the compacted paving mixture. Sp2 by the asphalt institute, lexington, kentucky or aashto standard practice.