The compactor shall tilt specimen molds at an angle of 1. In this update of the dependable afg1 compactor, we have incorporated features that todays mix design laboratories need in a gyratory compactor while. Were unique to specific models of gyratory compactor. Given this information, one way to eliminate some of the variation in volumetric test results may be to calibrate all of the gyratory compactors with one device using one method. Ray brown, and mike huner introduction background the superpave gyratory compactor sgc was developed during the strategic highway research program as part of the superpave mix design system to better simulate the field. Pdf application of discrete element method to superpave. Pdf significance of using a superpave gyratory compactor. Background the superpave mix design procedure features the superpave gyratory compactor.
All superpave gyratory compactors are designed to meet the specification criteria. Model 5850 gyratory compactor note before using the model 5850 gyratory compactor, carefully read this manual. The history and future challenges of gyratory compaction. Gyropave provides a flexible and powerful tool to collect and process densification data from the gyratory compactor. Aashto tp4t312 preparing and determining the density of hot mix asphalt hma specimens by means of the superpave gyratory compactor. The sgc was created in the early 1990s to accurately represent inplace asphalt densities. Compress mp4, mov, mp3, pdf, png, jpg, jpeg, gif files online for free. Three models of gyratory compactor troxler 4141, pine 125x, and pine g2 were used to compact specimens. Although the gyratory compaction process has been demonstrated to simulate field compaction of hot mix asphalt, results from this study demonstrate that gyratory. Laboratory testing of soil using the superpave gyratory compactor. The iowa department of transportation idot received a strategic highway research program shrp gyratory compactor in december 1994.
Astm d692509 standard test method for preparation and. Using gyratory compactor to measure mechanical stability. Triplicate samples of hotmix asphalt hma were used for each compactor. Gyropave is the software companion to troxlers model 4140 and 4141 gyratory compactors. Compacting bituminous specimens using the superpave. Compress pdf files for publishing on web pages, sharing in social networks or sending by email.
Scope the department requests a gyratory compactor that compacts hot mix asphalt specimens at constant pressure, a constant angle of. The history of gyratory compaction purdue engineering. No document type document name description document size in kb 1 additional documents emd. Using gyratory compactor to measure mechanical stability of asphalt mixtures. The pine instrument afg2 superpavetm gyratory compactor sgc is designed to compact prepared hot mix asphalt hma specimens at a constant consolidation pressure, at a constant angle of. The high angle of gyration employed by the texas gyratory. Superpave gyratory compactor sgc, these external sources of variability. Transfer data to a usb stick and print to a pcl laser printer from your. This standard also refers to the determination of the relative density of the compacted specimens at any point in the compaction process. Free online file compression tool lets you compress large files. Event summary electromechanical gyratory compactor type invitation to bid number fpcitb0850 organization tamu currency us dollar event status awarded work group fpc exported on 12112018 exported by jacqueline gibson for requisition 98497927 created document. Utilities are included for transducer check, diagnostic routines and calibration.
It was found that 41 percent of the compactors tested were not in specification when. The model 5850 gyratory compactor provides safe, reliable gyratory compaction of asphalt specimens using a compaction pressure and gyration angle selected by the operator. Compress pdf files for publishing on web pages, sharing in. Event summary electromechanical gyratory compactor. Click here for a comparison of the gb1 and the g2 pine superpave gyratory compactors. The afg2 gyratory compactor models listed above conform to the directives and standards referenced above. Reduce file size of videos, pdf documents, mp3 audio files and images. The method of specimen compaction is crucial to creating asphalt specimens that behave similar to asphalt used in construction and in obtaining meaningful test results. Compacting bituminous specimens using the superpave gyratory. Since then idot has been studying the ability of the compactor to analyze fundamental properties of aggregates such as shape, texture, and gradation by studying the volumetrics of the aggregate blends under a standard load using the shrp gyratory compactor. Laboratory testing of soil using the superpave gyratory. The g2 is a customer favorite because it is userfriendly, reliable, durable, and well supported.
The rugged and proven brovold gyratory compactor is an industryleader for portability and ease of use when compacting hotmix asphalt specimens to superpave mix design requirements. Brovold superpave gyratory compactor or approved equal. Compress pdf file to get the same pdf quality but less filesize. The compactor shall be designed to permit the specimen mold to revolve freely on its tilted axis during gyration. Gyratory asphalt compactor gyratory compaction impact. Due to the variety of gyratory compactors in use throughout the state, there is a concern of possible variability in the angle of gyration between the. Wsdot currently has troxler, pine, pinebrovold, and interlaken compactors across the state, so a representative sample two to four compactors per region was tested in this study. Software communicates with the gyratory compactor via usb interface. Also, the gyratory compactor is required to tilt the specimen mold at an internal angle of 1. This online pdf compressor allows to compress pdf files without degrading the resolution dpi, thus keeping your files printable and zoomable. Field compaction equipment used for fine grained soil usually applies a kneading action or vibration that produces shear forces which also reshape soil particles arrangement. The gyratory compactor, which produces consistent replication of the testing environment from test to test, includes a pentiumbased pc, calibration equipment and software at no additional cost. The superpave gyratory compactor sgc was developed during the strategic highway research program as part of the superpave mix design system to better simulate the field compaction of hot.
In april of 1991 in atlanta, georgia, during one of the four aamas workshops, fhwa proposed the hybrid gyratory compactor, which was designed to overcome issues with the two compactors recommended by aamas, specifically, the gtms size and cost, and the texas gyratorys high angle of compaction. Using gyratory compactor to measure mechanical stability of asphalt mixtures wisconsin highway research program 00920102 by ahmed faheem, research assistant. Structural analysis of aggregate blends using the shrp. The best online tool to compress large pdfs while maintaining both file.
It is especially important to understand the safety warnings on page 12. Berti vice president of engineering pine electronics, llc date of issue. Keep this manual in a safe place that is always easily accessible during the use of the model 5850. Gyratory crushers the original patent for the gyratory crusher was granted to phile tus w. Evaluation of the superpave gyratory compaction procedure. One of the best methods of laboratory compaction is considered to be gyratory for not. The afg2 is our next generation gyratory compactor. The best online tool to compress large pdfs while maintaining both file format and quality.
Pdf superpave mix design method is one of the major asphalt mixture. Unlike other services this tool doesnt change the dpi, thus keeping your documents printable and zoomable. Performance of quality control tests at laboratory facilities other than the plantsite laboratory are allowed provided the laboratory facilities are owned. Refer to aashto t 312 and troxler model 4140 gyratory compactor instruction manual.
Gyratory compactors this technical brief provides an overview of the gyratory issues that affects the performance of asphalt pavements. Compress or optimize pdf files online, easily and free. Troxler offers free downloads of software to use with your gauges or gyratory compactors. Pdf the effect of restricted zone on volumetric properties of mixes consisting of all crushed, and all crushed and partially uncrushed, materials was. Gb1 brovold gyratory compactor pine test equipment. Gyropave enables the user to manage multiple project files. Oklahoma highway construction materials technician certification board instructional video. Specification hm685 superpave gyratory compactor hm687 brovold gyratory compactor.
The gyratory compactor is used to prepare specimens for later analysis of the volumetric properties of the mixture, evaluation of mixture densification properties, evaluation of moisture sensitivity, field. This fint crusher was used by the buffalo cement co. Gyratory compaction is considered to be one of the best methods of laboratory compaction for the assessment of compactibility and the manufacture of test specimens. Using the sgc to compact soil is attractive because the gyratory compaction process simulates field compaction more closely than traditional impact compaction tests, and the gyratory compactor has an established track record of success with asphalt compaction. Evaluation of the internal angle of gyration of superpave gyratory compactors in alabama brian d. Superpave gyratory compactor sgc to another is crucial to. The most popular online tool to compress pdf files into an email ready size.
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