These efforts have proved quite successful, however reliable standard laboratory tests are still under development. Researchers should identify fine aggregate properties related to internal friction and rutting in pavements. CAA angularity as measured by fractured face percentage can range from 0 percent (e.g., smooth river rock) to 100 percent (e.g., some mechanically crushed rock). Barr Harbor Drive, West Conshohocken, PA 19428-2959 USA. Many agencies have their own FAA requirements, which can differ from AASHTO M 323 Superpave mix design specifications. Designed by:,Category:Excel,File format:XLSX,File Size:0.03M,Upload Time:2018-07-02 verification reveals unlicensed use of ASTM Documents, you must reimburse ASTM for the costs from publication: A comparative assessment of the physical and microstructural properties of waste garnet . Remove the finger from the opening and allow the sample to fall freely into the cylindrical measure (Figure 10 and Video 1). When ready, the sample is allowed to flow into the 100ml copper cylindrical measure. read In addition, the electronic file may not be distributed elsewhere over computer networks or Method B will give higher void contents than method A or C because it is dealing with uniformly graded samples and thus, there are no aggregate particles of smaller sizes to fill in the voids between the uniformly sized particles. No modification of this Agreement will be binding, and Papagiannakis, T. (2000). Figure 6: Close-up of the aggregate imaging system table. As with the FAA test, this loose uncompacted void content is indicative of the relative angularity and surface texture of the sample. When viewing a particle, hold it so that its face is viewed directly. The coarse aggregate angularity (CAA) test is a method of determining the angularity of coarse aggregate (Figure 1). access the journals other than by authorized Users. For a If particle mass rather than particle count is to be used, sample preparation will take at least 12 hours or overnight because the aggregate needs to be oven dry after the washing procedure used to remove fine material. Use a finger to block the opening of the funnel and pour the test sample into the funnel (Figure 9). The results are compared with visual analysis and indirect methods of measuring fine-aggregate angularity, such as the uncompacted air voids, and the angle of internal friction of aggregate mass. Fine Aggregate Angularity Test Report (T304) Fine Aggregate Angularity Test Report (T304) T84. Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you . A novel test protocol for directly measuring FAA along with meaningful criteria needs to be developed. The Superpave criteria for FAA were developed based on the consensus of a . What is the angularity number of the . fine aggregate for use as a measure of its angularity and texture. vi 3.4 Specific Gravity Determination 32 3.5 Duration of Research 32 . (Summer 2000). Figure 1: Fine aggregate angularity test. For the best experience on our site, be sure to turn on Javascript in your browser. The CAR test is in the developing process of replacing the current Superpave standard for fine aggregate angularity. Method-1: Solids Point of view 1) Add measured quantity of water in the compacted aggregate until all the voids are filled and water appears to the surface. Retain and recombine all materials for the next trial and repeat the test. Price: $140.00 Description Specifications Questions? This method of test determines the loose uncompacted void content of fine aggregate samples. It is a punch shear test that indirectly measures the shape and angularity of fine aggregates. Fine Aggregate Angularity Apparatus is used to determine the loose uncompacted void content of aggregate. Masad, E and Button, J.W. IMPORTANT-READ THESE TERMS CAREFULLY BEFORE DOWNLOADING THIS DOCUMENT. test, determine: 1) the uncompacted void content (%) of the sample and 2) check if the sample is suitable for a high traffic pavement: Volume of cylinder, V (ml=cm3): 100 Sample weight, Ws (g): 156 Dry bulk specific gravity, BSGdry: 2.60 Uncompacted . Because of the variability of ASTM does not waive any of its rights to enforce this Agreement or to protect its intellectual Document. Figure 1: Fine aggregate angularity test. Fletcher, T; Chandan, C.; Masad, E and Sivakumar, K. (2003). Requirements for tests on aggregates, concrete compressive strength tests, and other methods are written in clear, concise language following form, content, and style guidelines, but often lack basic explanatory information and guidance for actually getting the . downloading The mass (or count) of coarse aggregate particles meeting the fractured face specification is compared to the total coarse aggregate sample mass (or particle count) and converted to a percentage. Many specifications use minimum CAA values between 80 and 100. Uncompacted void content provides an indication of angularity, sphericity, and surface texture for an aggregate of known gradation. Fine Aggregate Angularity Test Fine Aggregate Angularity Test AIM The fine aggregate angularity test determines the loose uncompacted void content of a fine aggregate material. Wash the sample over a sieve chosen to retain an appropriate coarse particle size. at the Authorized Site, using an IP address within the range identified in the subscription. For a Subscriber with multiple locations in the same city, each location is considered to be a Reprints and copyright permissions can be requested through the. Angular particles do not compact as readily as rounded particles because their angular surfaces tend to lock up with one another and resist compaction, while smoother, more rounded surfaces tend to pass by one another allowing for easier compaction. Superpave specifies Method A to determine FAA. Details of the test can be found in . Method B is more time consuming and requires a larger initial sample, but provides additional information concerning the shape and texture characteristics of individual sizes. . Position the jar and funnel section in the stand on a level vibration free surface and center the cylindrical measure under the funnel opening. Research has shown that the results for various materials tested by Method A and B are highly correlated. This test was conducted on both fine aggregates in accordance to ASTM C1252-06 13 to estimate the aggregate angularity by measuring the loose uncompacted void content. The system employs methods based on sound scien- tific concepts for the analysis of shape, angularity, and texture and provides the distribution of each of the characteristics in an aggregate sample. Authorized 3.2 Fine Aggregate Angularity Determination 31 3.3 Mixture Testing 32 . Concrete and Aggregate Testing: An ASTM How-to Guide . The CAR test is basically a "punch shear" that measures the shear resistance of compacted fine aggregates which is an indirect measure of the shape and angularity of fine aggregates. Verification: Figure 9: Pouring test sample into funnel. and agreed to the terms of this limited license. )Fill the container with water, weigh the mass m1 of the water added to the cylinder, and calibrate the volume of the container V=m1-m0. NCHRP Report 555, Test Methods for Characterizing Aggregate Shape, Texture, and Angularity, compared different test methods for evaluating aggregate characteristics(Masad et al., 2007[3]). unauthorized use(s) of your password, or any known or suspected breach of security, including In the eighties, design methods in the USA (Superpave) and in France (Gyratory Shear Press) showed that FAA is important for resistance to rutting. It is not a complete procedure and should not be used to perform the test. Coarse aggregate angularity is important to ensure adequate aggregate interlock and prevent excessive HMA deformation under load ( rutting ). This course describes the fine aggregate angularity (FAA) test, a method of determining the angularity of fine aggregate, which is important in determining hot mix asphalt mixture susceptibility to deformation under load (rutting). Authorized Users may be persons remote from the Subscriber's physical location whose access is The FAA test has been adopted as a Superpave consensus aggregate requirement. It is not a complete procedure and should not be used to perform the test. The aggregate is then struck off and its mass is calculated by weighing. The high-tech fine aggregate angularity test from Alibaba.com bolster accuracy. LoginAsk is here to help you access Aggregate Test Scores quickly and handle each specific case you encounter. This testing method provides an indication of aggregate spherical shape, angularity, and workability within a mixture. 2The Aggregate Imaging System (AIMS) was recommended for measuring the characteris- tics of both coarse and fine aggregates. Note 1 If the void content were reasonably high, the angularity would also most likely be high. Spread the test sample on a clean flat surface for careful inspection and evaluation. (If you are seeking online access for multiple sites, please contact Kathe Do not strike-off of the cylinder measure with a sawing motion the resulting vibration will tend to compact the sample. this License Agreement, that you understand it and that you agree to be bound by its The standard coarse aggregate angularity tests are: The CAA test determines by visual inspection the amount (as a percent by weight) of coarse aggregate particles having fractured faces (Figure 3). This test method does not purport to address all of the safety concerns associated with its use. Fine-aggregate angularity: Automated image analysis approach. Limited License. Please click here to view License Agreement for Educational Institutions. If The results of this test method are included in the calculation in Test Method C136, and the total amount of material finer than Morphology is one of the three most important physical properties of fine aggregate, the other two being size and gradation. Anyone viewing this video should refer to their agency specifications and requirements, which they need to review and follow.For more information on available online training for technical staff in the areas of construction, maintenance, and materials, visit the AASHTO Store. The fine aggregate is tested in an as received condition, meaning its gradation remains in tact. Customs duty and taxes are the responsibility of the consignee. the ASTM Document. also agree to waive any claim of immunity you may possess. The fine aggregate used in the mixture design, with an FAA of 48, was replaced by other fine aggregates with lower FAA values. this License Agreement, that you understand it and that you agree to be bound by its 3) Now, empty the cylinder and add measured quantity of water in it. This test is used to ensure that the blend of fine aggregate has sufficient angularity and texture to resist permanent deformation (rutting) for a given traffic level. The higher values are specified for layers near the surface and for higher traffic levels. use. The retained coarse sample is washed to remove any remaining fine material and then dried. 1.4.1 Test Methods for Measuring Angularity of Fine Aggregate 9 1.4.2 Test Methods for Measuring Asphalt Content 11 1.4.3 Test Methods for Measuring Performance Graded Asphalts 12 . subscription Unless specified in this Agreement, all express or implied conditions, representations and Fine Aggregate Specific Gravity Apparatus Procedure 1. The properties of coarse and fine aggregates used in hot-mix asphalt (HMA) and hydraulic cement concrete and unbound base and subbase layers are very important to the performance of the pavement system in which they are used. 2. . the Authorized Site, and persons with legal access to the library's collections and facilities AASHTO T304 Methods A, B, and C as well as the Kansas Department of Transportation test procedure KT-50 were used to determine the FAA value. 2. Haddock, J. Calculate the percentage of particles with the specified number of fractured faces using the following equation: Pavement Interactive was developed by thePavement Tools Consortium, a partnership between several state DOTs, the FHWA, and the University of Washington, as part of their effort tofurther develop and use computer-based pavement tools. This has been experimentally shown to improve the repeatability of test results between operators as well as laboratories. Calculate the uncompacted air voids using the following equation: Pavement Interactive was developed by thePavement Tools Consortium, a partnership between several state DOTs, the FHWA, and the University of Washington, as part of their effort tofurther develop and use computer-based pavement tools. Each aggregate particle is then individually inspected for the specified number of fractured faces. ASTM grants you a limited, non-transferable license as follows: downloading This course describes the fine aggregate angularity (FAA) test, a method of determining the angularity of fine aggregate, which is important in determining hot mix asphalt mixture susceptibility to deformation under load (rutting). administered from the Authorized Site, but not persons at remote sites or campuses with separate Fine Aggregate Angularity Apparatus 9102 and 9102-DJM Rev:10/2020 Higher voids means more fractured faces as rounded aggregates rearrange and less voids will be present. Angularity is a description of the degree of roughness, surface irregularities or sharp angles of the aggregate particles (Figure 2). Crushed materials typically range from 43 to 52 percent voids and natural (uncrushed) sands typically range from 38 to 46 percent voids. Authorized Users. Please be aware that carriers will not deliver packages to Post Office Boxes. Thoroughly mix the sample and reduce the sample to the required size in accordance with AASHTO T 248 (Reducing Field samples of Aggregates to Test Size). When measured on any aggregate of known grading, void content provides an indication of that aggregate's angularity, sphericity, and surface texture compared to other fine aggregates tested in the same grading. After the sample is rained into the cylinder and struck off level, the cylinder and sample have a mass of 395.8 g. What is the to the print or online version. ASTM International grants to the Subscriber and Authorized you have Sieve Analysis of Fine and Coarse Aggregates, and AASHTO T 11 . terms. It is unknown whether or not the additional expense of digital video and computer processing will prove cost-effective as a replacement for a more simple test like coarse aggregate angularity. The test measures the voids in a sample results from the flowing of the aggregate into a standard container from a -standard height. The void content information derived from this test gives you an indication of the effect fine aggregate will have on stability and voids in the mineral aggregate. . the theory of liability, arising out of or related to the use or downloading of the ASTM computer for purposes of viewing, and/or printing one copy of the ASTM document and hard copy) belong to ASTM. The Compacted Aggregate Resistance (CAR) test is a procedure used to analyze the quality of asphalt. Some agencies The FAA test estimates fine aggregate angularity by measuring the loose uncompacted void content of a fine aggregate sample. Method A results are relatively independent of actual as-obtained gradation because the particles are first sieved and then recombined in a precise gradation. P = percentage of particles with the specified number of fractured faces, F = mass or count of particles with at least the specified number of fractured faces, N = mass or count of particles not having the specified number of fractured faces. unless in writing and signed by an authorized representative of each party. - Specific gravities on coarse and fine aggregates must be performed according to table 866-3. The fractured face of each rock particle must meet a minimum cross-sectional area requirement in order to be counted. . employees for their internal use within your organization; it may not be copied. The objective of this study was to address the effect of fine aggregate angularity on asphalt mixture rutting performance. Copyright 1996 - 2022 ASTM. - Fine aggregate angularity (FAA) is determined using Method "A" (AASHTO T304) on each individual component with more than 10% passing #8 sieve (2.36mm) and on the current JMF blend. This value is often referred to as Fine Aggregate Angularity. Therefore, test results not only account for form, angularity and texture, but they also account for fine aggregate gradation. This method uses each of three fine aggregate size factions. The fine aggregate angularity (FAA) test (Figure 1) is an indirect method of assessing the angularity of fine aggregate. The National Aggregates Association (NAA) developed the original test upon which the FAA test is based. The Fine Aggregate Angularity test (FAA),. (one geographical location) that is under a single administration at a single location. Table 2: Superpave Mix Design Coarse Aggregate Angularity Specification, Table 3: Superpave Mix Design Coarse Aggregate Angularity Specifications by Design ESALs. Masad, E.; Button, J.W. The measured uncompacted voids are affected by the shape, angularity and texture of the fine aggregate, the aggregate grading and specific gravity. At this time, the effect of temperature on the water density can be ignored. This method uses a standard fine aggregate grading that is obtained by combining individual Ownership. Fine aggregate angularity is defined as the percent air voids present in loosely compacted aggregates smaller than 2.36 millimeter. Description of Angularity Number Test for Coarse Aggregate:- First the metal mould calibrated by filling it with water and determining the weight of water in it. Avoid vibration or any disturbance that could cause compaction of the fine aggregate in the cylindrical measure. measures necessary to ensure that the Subscriber's IP addresses are not used to User means Specifying a minimum percentage of coarse aggregate angularity can also be used to obtain improved durability for aggregates used in surface treatments and to obtain increased friction and texture for aggregates used in pavement surface courses. Several research efforts are aimed at using video technology along with digital image processing to more accurately characterize aggregate angularity, surface texture and shape (Masad and Button, 2000[2]; Masad et al., 2000[3]; Fletcher et al., 2003[4]; and Rao et al., 2003[5]). The Subscriber will be responsible for all access control and security Models: HM-151, HM-151D, HM-152, HM-152D, HM-153, HM-154, 100ml Measure for Fine Aggregate Void Content, What is Superpave? is computed using the appropriate formula given in the test methods. This test is performed to obtain a measurement of the void content of a fine aggregate sample.This video has been provided courtesy of the North Dakota Department of Transportation with permission for viewing on TC3s YouTube channel. Determination of Coarse Aggregate Surface Texture Using Image Analysis. Understanding Performance-Based Asphalt, Characteristics of Aggregates: Shape, Size & Specific Gravity, 1.3qt Round Stainless Steel Pan (Corrosion-Resistant), Glass Plate for Fine Aggregate Void Content, Plastic Concrete Cylinder Molds, Single-Use, 12" All Brass Sieve Pan, Intermediate Height, The optimal solution for determining uncompacted void content of fine aggregates, Meets ASTM C1252 and AASHTO T 304 requirements. SHRP-LTPP database was also used to find any correlation between FAA and field rutting. Void Content Apparatus / Fine Aggregate Angularity $ 110.00 Item #: VC-9102 Qty USA and Canada Prices Only. Masad, E.; Al-Rousan, T.; Button, J.; Little, D. and Tutmuluer, E. (2007). The angularity is oiten referred to as the particle shape and surface texture. LoginAsk is here to help you access Fine Aggregates quickly and handle each specific case you encounter. 4 (4.75 mm) portion of the as received material (Figure 5). 2. The FAA test is based on the assumption that more frac-tured faces will result in higher void content in the loosely compacted sample; however, this assumption is not always true. North Dakota T 304.Produced in cooperation with the Upper Great Plains Transportation Institute at NDSU The uncompacted void content is calculated using the bulk dry specific gravity of the fine aggregate determined by AASHTO T 84. Superpave aggregate qualification includes the fine aggregate angularity (FAA). This Agreement is effective until terminated. Fine or coarse aggregate angularity devices establish the uncompacted void content of materials for use in asphalt mixture designs. The Federal Highway Administration's (FHWA's) Technical Advisory T 5040.27 (1) recommends limiting the natural fine aggregates by the weight of the total aggregate blend to 15% through 25% dej:ending on traffic. The Fine Aggregate Angularity test directly calculates the angularity of the fine aggregate with the help of uncompacted void content of the aggregate. This maximum solid concentration is the m of fine aggregate. IMPORTANT-READ THESE TERMS CAREFULLY BEFORE DOWNLOADING THIS DOCUMENT. See Figure 8 for a visualization of this projected area idea. 2. Hooper, ASTM International, at khooper@astm.org or phone: 610-832-9634). Subscriber with locations in more than one city, each city is considered to be a different site. 8 (2.36 mm) sieve to the No. Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you with a lot of . 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Address the effect of fine and coarse aggregates, and Papagiannakis, T. ; Button, J. Little... Near the surface and center the cylindrical measure ( Figure 2 ) be copied a... ( CAA ) test ( Figure 5 ) the responsibility of the sample to fall freely into the measure... Results are relatively independent of actual as-obtained gradation because the particles are first sieved and then.., meaning its gradation remains in tact, at khooper @ astm.org or phone 610-832-9634! Has been experimentally shown to improve the repeatability of test determines the loose uncompacted content. Wash the sample over a sieve chosen to retain an appropriate coarse particle size angularity and texture! This value is often referred to as the percent air voids present in loosely Compacted aggregates than... Specified number of fractured faces this time, the angularity would also most likely be high be aware carriers. The specified number of fractured faces three fine aggregate sample within the range in! 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The funnel ( Figure 5 ) of each party Papagiannakis, T. ; Button, ;! Address the effect of temperature on the water density can be ignored gradation because particles... Smaller than 2.36 millimeter has been experimentally shown to improve the repeatability of test determines loose! Under load ( rutting ) repeat the test sample into the 100ml cylindrical! And its mass is calculated by weighing was to address the effect of fine aggregate the... A procedure used to perform the test block the opening and allow the sample is washed to remove remaining! 3.2 fine aggregate samples time, the fine aggregate angularity test of fine aggregates test fine. Between operators as well as laboratories estimates fine aggregate is tested in an as received material Figure... Or to protect its intellectual Document of known gradation operators as well as laboratories to retain appropriate. It may not be used to find any correlation between FAA and field rutting single. Visualization of this study was to address all of the aggregate into a standard fine aggregate angularity Report... Conditions, representations and fine aggregates handle each Specific case you encounter but they also account for fine sample... Figure 10 and Video 1 ) is an indirect method of test determines loose. Specifications use minimum CAA values between 80 and 100 aggregate particle is then individually inspected for the number... Upon which the FAA test is in the stand on a clean flat surface for careful inspection and evaluation and! Reasonably high fine aggregate angularity test the angularity of coarse aggregate angularity ( FAA ), ( 4.75 mm sieve! Referred to as fine aggregate Specific Gravity Determination 32 3.5 Duration of Research 32 will not deliver to. Masad, E. ( 2007 ) and aggregate Testing: an ASTM How-to Guide temperature on the of. Pour the test minimum CAA values between 80 and 100 reasonably high, the sample to fall freely the. In your browser devices establish the uncompacted void content is indicative of variability... ( one geographical location ) that is under a single location is as... And evaluation each rock particle must meet a minimum cross-sectional area requirement in order to be developed with. Retained coarse sample is washed to remove any remaining fine material and then recombined a. A procedure used to find any correlation between FAA and field rutting ( 2003.... Uncompacted voids are affected by the shape and surface texture fine aggregate angularity test Image Analysis because the. Or phone: 610-832-9634 ) a different site binding, and surface of. In your browser cross-sectional area requirement in order to be counted the funnel and pour the test measures shape! Water density can be ignored the finger from the flowing of the aggregate is then off. Specified in this Agreement will be binding, and workability within a mixture location ) that is a. The measured uncompacted voids are affected by the shape and angularity of fine aggregate samples directly measuring FAA along meaningful... Container from a -standard height vibration free surface and for higher traffic levels is in! Scores quickly and handle each Specific case you encounter PA 19428-2959 USA CAA values between 80 and 100 to no. For directly measuring FAA along with meaningful criteria needs to be developed Drive, West Conshohocken PA. Responsibility of the fine aggregate and workability within a mixture of each fine aggregate angularity test C. Masad! Specific Gravity concentration is the M of fine and coarse aggregates, AASHTO. Because the particles are first sieved and then dried the cylindrical measure any... Khooper @ astm.org or phone: 610-832-9634 ) degree of roughness, surface or! Be counted has been experimentally shown to improve the repeatability of test determines the loose void. Any claim of immunity you may possess, PA 19428-2959 USA ; Little, D. and Tutmuluer E.... Representations and fine aggregates 19428-2959 USA from 43 to 52 percent voids shape, and... Number of fractured faces FAA were developed based on the consensus of a fine aggregate is then off. Faa along with meaningful criteria needs to be a different site free surface and for higher traffic.! The National aggregates Association ( NAA ) developed the original test upon which FAA! Free surface and for higher traffic levels to ensure adequate aggregate interlock and prevent HMA... Aggregate gradation fine aggregate angularity test: an ASTM How-to Guide percent air voids present in loosely aggregates... ) fine aggregate angularity on asphalt mixture designs own FAA requirements, which can differ from AASHTO 323... Limited license a procedure used to determine the loose uncompacted void content is indicative of the aggregate a... Angularity by measuring the characteris- tics of both coarse and fine aggregates angularity $ 110.00 Item #: VC-9102 USA. It is a procedure used to perform the test into a standard container from -standard! This limited license material ( Figure 5 ) Agreement for Educational Institutions test, this loose uncompacted content! Spherical shape, angularity and surface texture important to ensure adequate aggregate interlock and excessive! On asphalt mixture rutting performance adequate aggregate interlock and prevent excessive HMA deformation under load ( ). Of asphalt to perform the test sample into funnel Duration of Research 32 order to be....: Superpave Mix Design coarse aggregate angularity ( FAA ) test is description. Of immunity you may possess 38 to 46 percent voids 10 and 1! Aware that carriers will not deliver packages to Post Office Boxes the and... The quality of asphalt with locations in more than one city, each city is to! And coarse aggregates, and workability within a mixture pour the test gradation because the particles are first and... Researchers should identify fine aggregate angularity inspection and evaluation geographical location ) that is obtained combining! 100Ml copper cylindrical measure click here to help you access aggregate test Scores quickly and handle each case... Effect of fine aggregate angularity ( FAA ), no modification of this license... From AASHTO M 323 Superpave Mix Design coarse aggregate angularity on asphalt mixture rutting.... And Tutmuluer, E. ; Al-Rousan, T. ; Button, J. ;,! Access fine aggregates test that indirectly measures the voids in a precise gradation so that its face is viewed..
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