Pdf effect of fine material on compaction characteristics. The internal diameter of the molds for each compactor were measured starting the bottom, and in 1inch increments from the bottom to a total height above the bottom of 7 inches. Superpave gyratory compactor sgc to analyze if sgc compaction enables improved precision of compressive strength tests for flexible base and subgrade materials and analyzed a. Pdf soil compaction is defined as a method for mechanically increasing the density of soil by reducing the air volume from between particles. By michelle rae uy 24 january 2020 knowing how to combine pdf files isnt reserved. Laboratory testing of soil using the superpave gyratory compactor. The gyratory movement generates a shear force whose entity depends upon the structure of the mix. Pdf is a hugely popular format for documents simply because it is independent of the hardware or application used to create that file. Event summary electromechanical gyratory compactor. Gyratory compactor an overview sciencedirect topics. Application of superpave gyratory compactors for flexible base.
The afg2 gyratory compactor models listed above conform to the directives and standards referenced above. Of these, one of the most important questions is regarding the restricted zone. Introduction the washington state department of transportation wsdot first purchased a sgc in 1995. Unfortunately, this book cant be printed from the openbook. It is well known that the gyratory test defines the mix by its volumetric characteristics. Compacting specimens using the texas gyratory compactor. The purpose of this document is to provide the specific information and procedures which are to be used to better refine the superpave gyratory compaction.
An electrohydraulic or electromechanical compactor with a ram and ram heads that are restrained from revolving during compaction. The unit provides safe, reliable gyratory compaction of asphalt specimens at a given consolidation pressure and angle of gyration. Aashto t 344 gyratory mold and plate dimensions verification 12 mo. Compacted specimens are suitable for volumetric and physical property. This standard also refers to the determination of the relative density of the compacted specimens at any point in the compaction process. Superpave gyratory compactors federal highway administration.
Draft test procedure for superpave gyratory compaction of strength test. Superpave gyratory compacting of test specimens of bituminous. Effect of density on mechanical properties and durability. Asphalt mixture compaction and aggregate structure. How to shrink a pdf file that is too large techwalla. With the aid of a pc and the installed software it is possible to read the. Once youve done it, youll be able to easily send the logos you create to clients, make them available for download, or attach them to emails in a fo. Using gyratory compactor to measure mechanical stability of asphalt mixtures wisconsin highway research program 00920102 by ahmed faheem, research assistant.
This practice covers the procedure for the evaluation of the superpave gyratory compactor sgc internal angle of gyration using an instrument capable of simulating loading conditions similar to those created by a hot mix asphalt hma specimen. Equipment requirement min freq procedure balances verification 12 mo. En 1269710, en 1269731, supplied with the internal angle set to 0. Gyratory compactor 77b251 research model a case study two. Itm 908 gyratory compactor internal angle verification 12 mo. A filled gyratory compactor mould is heavy and often very hot.
Application of superpave gyratory compactors for flexible. Problems with existing compactors are mainly related to build quality and ease of use. This gyratory compactor, entirely developed and manufactured by matest, is used to simulate and reproduce the real compaction conditions under actual road paving operations, hence determining the compaction properties of the asphalt such compaction is achieved in a fully automatic way, by combining the rotary action and the vertical resultant force applied by a mechanical head. Four blends were selected with nominal maximum sizes ranging from 9.
Aug 04, 2016 a superpave gyratory compactor sgc to compact soil specimens. The compactor shall be designed to permit the specimen mold to revolve freely on its tilted axis during gyration. Specification hm685 superpave gyratory compactor hm687 brovold gyratory compactor number of gyrations 0999 0299 speed of gyrations 30 0. A pdf file is a portable document format file, developed by adobe systems. Laboratory testing of soil using the superpave gyratory. If your pdf reader is displaying an error instead of opening a pdf file, chances are that the file is c. Troxler offers free downloads of software to use with your gauges or gyratory compactors. A pivoted support is carried by the frame and capable of rotation in at least a first and a second rotational degree of freedom. In many cases these moulds have to be lifted in and out of gyratory compactors. The initial purchase was a first generation troxler model 4140 gyratory. Searching for a specific type of document on the internet is sometimes like looking for a needle in a haystack.
The gyratory compactor motion is generated with a precise eccentric which is factory calibrated to 0. Each sample is heated to the anticipated mixing temperature, aged for a short time up to 4 h and compacted with the gyratory compactor a device that applies pressure to a sample through a hydraulically operated or mechanically operated load. Three samples of each of six blends were compacted in each compactor at optimum asphalt content. Most electronic documents such as software manuals, hardware manuals and ebooks come in the pdf portable document format file format. Using the gyratory pressure distribution analyzer gpda to.
This is achieved with a special load cell housed in the vertical load ram. Superpave gyratory compactor by james cox and sons conforms to astm d6307, aashto t312 tp4, shrp m002, en 1269710, en 1269731, t 07362011. Design of txdot asphalt mixtures using the superpave gyratory. Astm d6925, aashto t312, cs90101115, cs90101230, shrp m002, t 07362011, tex241f, en 1269710 compaction is achieved by the application of a vertical stress normally 600kpa 87psi via end platens to a known mass of asphaltic mixture within a 150 and 100mm 6 and 4inch internal. Performing organization name and address the university of tennessee 325 john d.
Standard test method for preparation and determination of the relative density of asphalt mix specimens by means of the superpave gyratory compactor pdf download file size 72. Amer, delatte, and storey 2003 before this hypothesis could be verified, one question that had to be answered was whether it was possible to fabricate an rcc specimen in a gyratory compactor and remove it intact for subsequent testing. This means it can be viewed across multiple devices, regardless of the underlying operating system. Preparation of asphalt concretes by gyratory compactor. Superpave gyratory compactor sgc, these external sources of variability. Sgc superpave gyratory compactor avc asphalt vibratory compactor lkn linear kneading compactor state test temp. A gyratory compactor apparatus is provided that is adapted to interact with a mold that defines a mold axis. The shrp gyratory compactor was manufactured by the rainhart company. Based on the results of this study, wsdot is working to. Mixing and compaction temperatures are chosen according to asphalt binder properties so that compaction occurs at the same viscosity level for. Astm d692509 standard test method for preparation and.
I paid for a pro membership specifically to enable this feature. An oversized pdf file can be hard to send through email and may not upload onto certain file managers. Both the internal angle of gyration and external mold angle are stored in the data file. A awards will be made to the most responsive responsible bidder. Servo controlled superpave gyratory compactor grc 20 selfheating molds for 4 and 6 diameter hot mix asphalt hma specimens. Pine afgc125x referenced in this manual specimen molds, and top and bottom plates thermometer balance readable to 0. The high angle of gyration employed by the texas gyratory causes compaction to occur. The purpose of this document is to provide the specific information and procedures which. Doc 1b pd040 914 and a california form 590 withholding exemption certificate if not currently a county of fresno approved vendor. Pdf file or convert a pdf file to docx, jpg, or other file format. This level of traffic and temperature yielded values of ninitial, ndesign and nmaximum of 8, 96, and 152, respectively. The superpave gyratory compactor is specifically designed to meet the en and aashto requirements see section 5. The gyratory compactor apparatus includes a frame that defines a frame axis and has a first mounting plate and a spacedapart second mounting plate. Using gyratory compactor to measure mechanical stability of.
Mixes comprised of these blends had been previously designed. 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 110631099 estimated value 42,974. Astm d711520 standard test method for measurement of. Compacted specimens are suitable for volumetric, physical property, and mechanical testing.
Gyratory testing machine 1960s and 1970s goetz, ruth, and others recommended using gtm for mix design to measure stability 1980s and 1990s france, australia, and finland have used the gyratory for mixture evaluation 1980s and 1990s in 1993 the superpave gyratory compactor was adopted in the u. The superpave gyratory compactor sgc was developed as a part of the shrp study and has been recommended as an improved method for compaction and analysis of hma in the mix design process. Mixing and compaction temperatures are chosen according to asphalt binder properties so that compaction occurs at the same viscosity level for different mixes. Superpave gyratory compactor internal angle of gyration. Unlike most compactors 100 and 150mm o moulds can be tested without changing machine parts. Adobe designed the portable document format, or pdf, to be a document platform viewable on virtually any modern operating system. Afg2 superpave gyratory compactor operation manual pine. Triplicate samples of hotmix asphalt hma were used for each compactor. The selfcontained unit is lightweight and easily transported to remote sites or mobile labs. Gyrotronic gyratory compactor, entirely developed and manufactured by matest, is used to simulate and reproduce the real compaction conditions under actual road paving operations, hence determining the compaction properties of the asphalt. Were unique to specific models of gyratory compactor. The research gyratory compactor, model 77b0251 from controls of italy, differs from the standard model in that it measures the shear force.
Compacting specimens using the texas gyratory compactor tgc. Compacting bituminous specimens using the superpave gyratory. If your scanner saves files as pdf portbale document format files, the potential exists to merge the individual files into one doc. Superpave gyratory compactor sgc to analyze if sgc compaction enables improved precision of compressive strength tests for flexible base and subgrade materials and analyzed a procedure for determining. The axis of the ram shall be perpendicular to the platen of the compactor. Continuous positive feedback to maintain gyration angle precision throughout compaction. In addition are available b04101 and b04101 en models which include the shear stress measurement device. Keep this manual in a safe place that is always easily accessible during the use of the model 4140. This article explains what pdfs are, how to open one, all the different ways. It is especially important that the user understand the safety warnings on page 22. Luckily, there are lots of free and paid tools that can compress a pdf file in just a few easy steps. If you need to print pages from this book, we recommend downloading it as a pdf.
As stated earlier, external angle adjustment methods vary from manufacturer to manufacturer. 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. Servo controlled superpave gyratory compactor grc20. Effect of density on mechanical properties and durability of. This technical brief provides an overview of the gyratory issues that affects the performance of asphalt pavements. The pdf format allows you to create documents in countless applications and share them with others for viewing.
Manual of operation and maintenance model 4140 gyratory. This technical brief provides an overview of the gyratory issues that affects the performance of asphalt pavements fhwa publication number. Superpave gyratory compacting of test specimens of. Special form certificate cesium source serial numbers containing cz, bg, or g5. The compactor may also include a printer or a computer and software for collecting and printing the data. 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. The variables in the experiment consisted of the following.
This standard does not purport to address all of the safety concerns, if any. To combine pdf files into a single pdf document is easier than it looks. Authors baoshan huang, pawel andrzej polaczyk, wei hu 8. Pine gyratory compactor equipment description equipment id. This test method covers the compaction of asphalt mix into cylindrical specimens using the superpave gyratory compactor sgc. Pdf this study investigates the effects of gyratory compaction of unbound granular materials through an experimental program, and explore if.
Gyratory compactors simultaneously use static compression and a shearingkneading action to compact asphalt mixtures. There is a need to evaluate the effect of the restricted zone on volumetric properties of specimens compacted with the superpave gyratory compactor sgc. Making a pdf file of a logo is surprisingly easy and is essential for most web designers. Pdf comparison of superpave gyratory compactor and impact. Design of txdot asphalt mixtures using the superpave. Depending on the type of scanner you have, you might only be able to scan one page of a document at a time. This standard may involve hazardous materials, operations, and equipment.
Read on to find out just how to combine multiple pdf files on macos and windows 10. Berti vice president of engineering pine electronics, llc date of issue. Compacting bituminous specimens using the superpave. Bulk samples of plant produced hma mixture were compacted in the sgc and analyzed according to the procedure specified in the superpave mix design manual. 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.
Asphalt institute 5 compared these two compactors with the modified texas gyratory compactor used to develop the superpave criteria during the strategic highway research program and a prototype rainhart 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. Three models of gyratory compactor troxler 4141, pine 125x, and pine g2 were used to compact specimens. Superpave gyratory compactor figure 1, including a device for measuring and recording the height of the specimen throughout the compaction process. Publication details pavements federal highway administration. This reliable model is built by pine instruments and is ideal for both mix design and qcqa applications. The sgc was created in the early 1990s to accurately represent inplace asphalt densities. An analysis of asphalt mix design and performance properties. The diary is kept on file for a minimum period of three years. Evaluation of the superpave gyratory compactors center for. Closedloop servo control of ram pressure and tilt angle. Please note that some of troxlers software requires a license and must be ordered by calling troxler customer service at 1877troxler. The compactor shall tilt specimen molds at an angle of 1. Superpave gyr gyratory supports the following standards.
1247 650 1305 404 392 777 52 639 103 85 1066 950 909 1406 463 432 1023 1421 818 46 351 692 133 1101 1493 87 269 1399 794 854 1224 1511 638 59 1236 1471 33