Prepare several initial samples, usually two at the proposed design asphalt content, two at 0. Scdot asphalt mixes compared to other states, asphalt index. Level i mixture design federal highway administration. Superpave mix design window superpave mixpack qcqa.
Pavement design and analysis superpave mix design part 02. Construct a superpave asphalt concrete pavement with the type of mixture specified in the contract documents, or when offered as alternates, as selected. However, superpave still carries the shadow of marshall mix design in that the design air voids are 4 percent. Asphalt institute 2001 superpave mix design series no. Superpave is a pavement that can be customized by adjusting the design mix of constituent materials from aggregate proportions to liquid asphalt content and types of performance grade binder to withstand the volume and weight of traffic to allow a better quality and extended service life of pavement. Obtain superpave asphalt concrete from a plant that is currently on the departments production facility listing. Superpave volumetric mix design and analysis volume i i.
Understanding superpave mix design federal highway administration 1995 video vh353 superpave, superior performing asphalt pavements, is presented as t. Aggregate sizes of the mix design should be checked prior to use in thinner lifts. It was developed in 1987 by the strategic highway research program shrp researchers. Batch, mix, and compact more samples with this gradation with four asphalt contents. The key aspect to the performance of any asphalt mixture is the selection of the optimum materials that will be used in the 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 job mix formula shall include the recommended formula, extracted gradation, and supporting design data. Commercialgrade class a mix has roughly the same requirements as the method for sr12.
Superpave laboratory study manual volume iii 7 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. Volumetric and mechanical performance properties of superpave. Pp35, table 2 superpave volumetric mixture design requirements. Much of the material contained in this manual was originally produced by the asphalt. Kdot commercialgrade mix and qcqa mix kdot uses both commercialgrade and qcqa superpave mix. Superpave gradation requirements pavement interactive. The superpave mix design manual presents the concepts and criteria involved with the superpave asphalt mix design system. The mixture design system developed during shrp became known as superpave. Asphalt institute ms2 7th edition 2014 asphalt mix design methods ingilizce orijinal. The superpave gyratory compactor is a transportable device whose primary function is to fabricate test specimens by simulating the effect of traffic on an. The superpave system ties asphalt binder and aggregate selection into the mix design process, and considers traffic and climate as well.
Shrp adopted the asphalt institute mixing and compaction guidelines base on the. Versatile mix used for a variety of applications ranging from high volume. Properties considered in mix design superpave mix design method. These control points are very general and are a starting point for a job mix formula. Use the sp design procedure provided in tex204f, unless otherwise shown on the. The following links provide example problems and related information that could be helpful to those who choose to participate in the requalification examination to be given on december 10, 20, december 11, 20, and december 12, 20.
Superpave procedure is considered as an improved method for producing a good performing asphaltic paving mix. Shrpa407 the superpave mix design manual for new construction and overlays ronald j. Superpave mix design window superpave mixpack qcqa spreadsheet revision date. Mixing place bowl on mixer and mix until aggregate is wellcoatedhma superpave mix design 26 27. Specification and testing published as superpave series no. Compact these trial mixes in the superpave gyratory compactor see figures 1, 2 and 3. Jan 01, 2001 its pretty much as i expected its the manual for how to design a pavement using superpave. Superpave mix design had three levels of increasing complexity.
Mar 20, 20 mixing place preheated aggregate in bowl and add hot asphalthma superpave mix design 25 26. Approval and issuance of a mix design is requested. One of the principal results from the strategic highway research program shrp was the superpave mix design method. The primary features of marshall mix design are a densityvoids analysis and the stabilityflow test. The performancebased mixture tests were to be used in the level 2 and level 3 designs. Ms2 mix design methods for asphalt concrete and other hot mix types, and superpave series no. Engineer, the equivalent fine type sp asphalt concrete mixture traffic level 4 may be. Superpave asphalt mixture design workshop workbook virginia. The superpave mix design system is based on volumetric proportioning of the asphalt and aggregate materials and laboratory compaction of trial mixes using the superpave gyratory compactor. Its pretty much as i expected its the manual for how to design a pavement using superpave.
One thing i had been wondering prior to purchase was, is there a difference between sp 1 and sp 2. Sp 2 superpave mix design method national cooperative highway research program nchrp report 452 recommended use reclaimed asphalt pavement in superpave mix design method, technicians manual ontario hot mix producers association environmental practices guide ts 1151. History of asphalt mix design in north america, part 2. The report outlined the need for increased state and federal funds to develop badly needed research for better and longer.
This investigation was carried out to study the volumetric and mechanical performance properties of the superpave mixtures sp 1 and sp 2 and a typical taiwan mixture ttm. Superpave is an asphalt mix design method that has its roots in a report released back in 1984 by the transportation research board trb, americas highways, accelerating the search for innovation. These levels were referred to as level 1, level 2 and level 3 mix design. Superpave mix design 48 determining the design asphalt content the selected trial blend becomes the design aggregate structure. The only acceptable asphalt mix designs will be 50 gyrations superpave a minimum lift thickness of 1. 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. Refinements to the concepts of asphalt mix design procedures came about not only with. Aggregate from reclaimed asphalt pavement rap is not required to meet. The superpave aggregate tests and criteria are described, including aggregate consensus and source properties, the aggregate gradation control points and the restricted zone. Experimental characterization of rutting performance of hma designed with aggregate gradations according to superpave and marshall methods. These tables data taken from aashto mp 2, standard specification for superpave volumetric mix design show typical superpave aggregate specifications for 37. The volumetric analysis common to the hveem and marshall methods provides the basis for the superpave mix design method. The superpave mix design method was designed to replace the hveem and marshall methods. These volumetric properties are then evaluated to select a mix design or to control.
Superpave volumetric mix design and a suggested process. The superpave mix design manual for new construction and overlays. It is a short name for superior performing asphalt pavement. Shrp researchers developed new equipment standards as well as. Louis county 600kb utilization of torture tests as an addendum to the superpave mix design system 321kb a westrack analysis 6. Aashto t 27 sieve analysis of fine and coarse aggregate. Mix design no based on the attached superpave mix design. The bituminous unit provides leadership and assistance to agencies, contractors, and consultants on specifying, constructing and maintaining long lasting bituminous pavements. The contractor shall design the mixtures for optimum asphalt content and comply with requirements of the superpave mix design for the level of mixture in table 5025 in accordance with aashto m 323.
Number of gyrations evaluations can be completed using any of several performance te. Everything you ever wanted to know about hma in 30 minutes. Today, most asphalt mixes are designed using the superpave method. One of the key components of superpave is materials selection. Asphalt institute manual series 2 ms2 aashto r35 standard practice for superpave volumetric design for hot mix asphalt hma aashto r3002 standard practice for mixture conditioning of hot mix asphalt hma aashto m156, standard specification for requirements for mixing plants for hotmixed, hot laid bituminous paving mix. Superpave mix design was first introduced in 1993 with the. The concept of designing at 4 percent dates back at least to development of the marshall method of mix design in the early 1940s. Pp28 or the asphalt institutes superpave mix design manual, to. Asphalt mix design manual guidelines for handling postconsumer shingles for asphalt mixes ras policy concerning sand source changes for mix designs. M 323 superpave volumetric mix design r 30 mixture conditioning of hot mix asphalt hma r 35 superpave volumetric design for hot mix asphalt hma r 90 sampling of aggregates. Materials selection binder the design process starts with material selection. 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. 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. This laboratory manual presents the superpave mix design system in a complete.
Superpave mix design and gyratory compaction levels federal. Performance by design transportation research board miscellaneous report isbn 0309094143. Number of gyrations evaluations can be completed using any of several performance tests currently. A mix design manual for hot mix asphalt update method in ai manual sp 02. 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. Pp28 or the asphalt institutes superpave mix design manual, to meet the. Review material for superpave plant technologist and superpave mix design technologist requalification exam. Cominsky university of texas at austin with contributions by. Ts 1151 superpave, stone mastic and warm mix asphalt. Item 344 superpave mixtures the texas department of. The answer is yes comparing my copy of sp 2 to my friends sp 1, the two books have a lot of overlap, but sp 2 has less detail about asphalt selection.
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