This does not apply to complete sets and sections. The fine aggregate angularity test determines the loose uncompacted void content of a fine aggregate material. property by any other means permitted by law. times average 3 to 5 business days. 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. 4. Aggregate Imaging System for Characterizing the Shape of Fine and Coarse Aggregates. 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. Domestic orders are delivered via United Parcel Service (UPS) or United States Postal Service (USPS). the ASTM Document. Each size is tested separately (Figure 4). Superpave specifies Method A to determine FAA. 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. Download the Excel XLSX file right now! Uncompacted air voids as a percentage of total volume. In no event will ASTMs liability exceed the amount paid by you under this License Many agencies have their own CAA requirements, which can differ from AASHTO M 323 Superpave mix design specifications. If more than one fractured face is specified, the same test can be done using two fractured faces as the decision criteria. Fine-aggregate angularity: Automated image analysis approach. This method measures the uncompacted void content of the minus No. Fine aggregate angularity is important because an excess of rounded fine aggregate (often in the form of natural sand) can lead to HMA rutting. The fine aggregate is tested in an as received condition, meaning its gradation remains in tact. 3) Now, empty the cylinder and add measured quantity of water in it. Gilson offers two models for this popular test. Please be aware that UPS will not deliver packages to Post Office Boxes. Cubical shaped particles with 100 percent fractured faces (highly desirable characteristics) may not meet the FAA requirement of 45 for high-volume traffic. LoginAsk is here to help you access What Is Fine Aggregate quickly and handle each specific case you encounter. What is the angularity number of the . AGGREGATE WAQTC CONTENTS . 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. terms. 2. Masad, E.; Button, J.W. Copyright 1996 - 2022 ASTM. VC-9102 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). Higher void contents correspond to higher fractured faces. Wash the sample over a sieve chosen to retain an appropriate coarse particle size. This grant extends only to the Subscriber and such Authorized The FAA test estimates fine aggregate angularity by measuring the loose uncompacted void content of a fine aggregate sample. This test is similar to a California Bearing Ratio (CBR) test where a piston is placed on a confined sample of fine aggregate and the total piston load is recorded for different penetration depths. When rounded materials are used, the shear strength is reduced resulting in rutting and shoving of the asphalt concrete mixtures. The results of this test method are included in the calculation in Test Method C136, and the total amount of material finer than Definitions. Barr Harbor Drive, West Conshohocken, PA 19428-2959 USA. Specifications typically contain requirements for percentage of fractured aggregate particles in order to maximize shear strength in either bound (e.g., HMA) or unbound aggregate mixtures. Avoid vibration or any disturbance that could cause compaction of the fine aggregate in the cylindrical measure. 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. An uncompacted void content (fine aggregate angularity) test is performed on a sample of fine aggregate with a bulk specific gravity of 2.547. matter during the term of this Agreement. Morphology is one of the three most important physical properties of fine aggregate, the other two being size and gradation. 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]). Sembada Graha PersadaJakarta 12510, IndonesiaP/F: 6221-22707981E: sembada-jkt@yahoo.co.id . of a sample of fine aggregate. Jahn (2004[4]) and others suggest a replacement test called the Compacted Aggregate Resistance test (CAR). Recombine the individual sizes in the appropriate quantities to meet the specified standard gradation. The 19 different gradation and aggregate source combinations are tested using the Fine Aggregate Angularity Test Method C as outlined by AASHTO T304 (2003) and ASTM C1252 (2003), the direct shear test, compacted aggregate resistance (CAR) test, modified light Clegg Hammer, and an aggregate imaging system device. 4. Fine Aggregate Specific Gravity Apparatus Procedure 1. The test measures the voids in a sample results from the flowing of the aggregate into a standard container from a -standard height. Figure 7: Close-up of the aggregate imaging system table. 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 complete test procedure can be found in: An aggregate sample is selected, dried, and then the coarse part of the sample is selected by sieving over an appropriate sieve. unauthorized use(s) of your password, or any known or suspected breach of security, including otherwise. If the required number of fractured faces is not specified, make the determination on the basis of a minimum of one fractured face. In some areas of the U.S. it can be difficult to meet this requirement with local aggregate sources (Haddock, 2000[2]). )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. customs processes and procedures in different countries, ASTM International cannot guarantee transit times to Disclaimer of Warranty. TC3 (tc3.transportation.org) 896 subscribers This video demonstrates Method A of the uncompacted void content of fine aggregate test, which is commonly referred to as the Fine Aggregate. The CAA test estimates coarse aggregate angularity by visually inspecting a small sample of coarse aggregate and separating the sample into those pieces with a fractured face and those without (Figure 2). The fine aggregate angularity (FAA) was determined for 13 fine aggregate sources (angular and round) and eight aggregate blends. Higher voids assumes more angularity. Figure 6: Close-up of the aggregate imaging system table. Find out. Because of the above issues, alternate methods to characterize fine aggregate shape, texture and angularity have been developed. from publication: A comparative assessment of the physical and microstructural properties of waste garnet . For purposes of this License, an Authorized Site is To the extent not prohibited by law, in no event will ASTM be liable for any loss, damage, lost It has been found through research that the FAA test method does not consistently identify angular, cubical aggregates as high quality materials (Chowdhury et al., 2001[1]). The first number is a minimum requirement for one or more fractured faces and the second number is a minimum requirement for two or more fractured faces. 3. destroying all copies (hard, digital or in any media) of the ASTM Document (journal). Several alternate procedures have been developed that attempt to improve upon a simple quantification of fractured faces. This method of test determines the loose uncompacted void content of fine aggregate samples. Many agencies have their own FAA requirements, which can differ from AASHTO M 323 Superpave mix design specifications. The objective of this study was to address the effect of fine aggregate angularity on asphalt mixture rutting performance. use. ASTM grants you a limited, non-transferable license as follows: It 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 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. 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. Materials Finer than 75 m (No. Agreement. 2The Aggregate Imaging System (AIMS) was recommended for measuring the characteris- tics of both coarse and fine aggregates. Price: $140.00 Description Specifications Questions? Rao, C.; Pan, T. and Tutmuluer, E. (2003). This is an indirect method for estimating fine aggregate angularity and texture. 5 to 8. 2. (2000). Document. You (Licensee) have no ownership or other rights in the ASTM Document. The ASTM D 5821 method is based on the Pennsylvania Test Method and was later adopted as the method for measuring coarse aggregate angularity within Superpave mix design. Download scientific diagram | Fine Aggregate Angularity test set-up with AG spent garnet. See Figure 8 for a visualization of this projected area idea. determinations of material finer than 75 m in fine or coarse aggregate are desired, this test method is used on the sample prior to dry sieving in accordance with Test Method C136. Sieve Analysis of Fine and Coarse Aggregates, and AASHTO T 11 . At this time, the effect of temperature on the water density can be ignored. downloading The FAA test has been adopted as a Superpave consensus aggregate requirement. A 100ml copper Cylindrical Measure, specified Funnel, Funnel Stand, and a Glass Plate for calibration are included. without The angularity test puts specific amount fine aggregate go through a standard funnel and then put into a standard container, then test the avoid ratio, that's we call it as the fine aggregate angularity, expressed in percentage. The Subscriber will be responsible for all access control and security If you do not agree to the terms of this License Agreement, promptly exit this page 2. . The paving and aggregate industries have found that cubical shaped particles, even with 100 percent fractured faces, may not meet the FAA requirement for high-volume traffic. . or non-infringement are disclaimed, except to the extent that these disclaimers are held to be Rao, C.; Pan, T. and Tutmuluer, E. (2003). 03_Agg_TOC Aggregate-i Pub. This maximum solid concentration is the m of fine aggregate. Some agencies service, or a combination of both. the loss, theft or unauthorized disclosure of your password or any unauthorized access to or use 1993 AASHTO Flexible Pavement Structural Design, 1993 AASHTO Rigid Pavement Structural Design, http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_555.pdf, http://www.ce.washington.edu/em03/proceedings/papers/820.pdf, Climate Change Impacts on Pavements and Resilience, E-Construction in Practice: A Peer Exchange with WSDOT and TxDOT. Please allow 4-7 weeks for delivery. This results in a 190 g sample. to the print or online version. Method A results are relatively independent of actual as-obtained gradation because the particles are first sieved and then recombined in a precise gradation. The Fine Aggregate Angularity Apparatus determines the uncompacted void content of fine aggregates to determine angularity and sphericity properties that affect the workability of mixed designs. All rights reserved. Reproduction of any portion of an AASHTO test method in any format is strictly prohibited without written permission from AASHTO. Fletcher, T; Chandan, C.; Masad, E and Sivakumar, K. (2003). . Fine Aggregate Angularity Test Report (T304) Fine Aggregate Angularity Test Report (T304) T84. The CAR test is in the developing process of replacing the current Superpave standard for fine aggregate angularity. SG-40 Includes a 100ml copper Cylindrical Measure, Funnel with specified hopper, Funnel Stand, and a Glass Plate for calibration. The higher values are specified for layers near the surface and for higher traffic levels. Authorized Users may be persons remote from the Subscriber's physical location whose access is 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). read of The ASTM Document. The high-tech fine aggregate angularity test from Alibaba.com bolster accuracy. data or for special, indirect, consequential or punitive damages, however caused regardless of 2. Separate the particles into two categories: Determine the mass or count of particles in the PASS category and the mass or count of the particles in the FAIL category. Angular materials are desirable in paving mixtures because they tend to lock together and resist deformation after initial compaction, whereas rounded materials may not produce sufficient inter-particle friction to prevent rutting. TheSGA-93 Corrosion-ResistantStainless Steel Pan retains sample material and meets applicable ASTM and AASHTO standards. and Papagiannakis, T. (2000). Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you with a lot of . Fine aggregate angularity is important because an excess of rounded fine aggregate (often in the form of natural sand) can lead to HMA rutting. Fine aggregates from different regions of USA were collected along with their performance history. This method can be used to determine the acceptability of dense-graded, gap-graded and open-graded aggregates. NCHRP Report 555. Test No. this License Agreement, that you understand it and that you agree to be bound by its Fine-aggregate angularity: Automated image analysis approach. city; however, employees of a branch campus or facility in another city are not considered to be Authorized Spread the test sample on a clean flat surface for careful inspection and evaluation. This Agreement is effective until terminated. These documents are copyrighted by ASTM International, 100 Barr Harbor Drive,PO Box C700, West Figure 1: Fine aggregate angularity test. Percentage of particles (by mass or count) that meet the specified fractured face criteria. 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 . Figure 9: Pouring test sample into funnel. FAA can indicate the effect of the fine aggregate portion of the mixture on the overall properties of the mixture. Licensee agrees to submit to jurisdiction and venue in the state Fine Aggregate Angularity (FAA) (20) Welcome to the Fine Aggregate Angularity course. The fractured face of each rock particle must meet a minimum cross-sectional area requirement in order to be counted. SG-40: 8 x 8 x 14.5in (203 x 203 x 368mm), WxDxH, SG-40A: 6.5 x 6.5 x 13in (165 x 165 x 330mm), WxDxH. The 9102 and 9102-DJM Fine Aggregate Angularity Apparatus determines uncompacted void content, and indicates the angularity, sphericity, and workability of fine aggregate materials. LoginAsk is here to help you access Fine And Coarse Aggregates quickly and handle each specific case you encounter. Passwords. The shape, angularity, and surface texture of fine aggregate are collectively used to characterize its morphology . Typical test values range from 38 to 52 percent voids. Prior to the development of Superpave, several studies indicated that HMA mixtures provided increased resistance to permanent deformation with increasing amounts of fractured faces in their coarse aggregate constituent. An uncompacted void content (fine aggregate angularity) test is performed on a sample of fine aggregate with a bulk specific gravity of 2.647. Crushed materials typically range from 43 to 52 percent voids and natural (uncrushed) sands typically range from 38 to 46 percent voids. Solubility (AASHTO T 44) 1 to 2. For reprints of a Additional charges may be incurred if your order requires multiple shipments. Fine aggregate drying can take several hours. In the test, a sample of fine aggregate is poured into a small calibrated cylinder by flowing through a 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. By downloading the ASTM Document you are entering into a contract, and acknowledge that 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. computer for purposes of viewing, and/or printing one copy of the ASTM document The higher the void content, the higher the assumed angularity and rougher the surface. ASTM International grants to the Subscriber and Authorized Each aggregate particle is then individually inspected for the specified number of fractured faces. This video demonstrates Method A of the uncompacted void content of fine aggregate test, which is commonly referred to as the Fine Aggregate Angularity Test, or FFA Test. User means 1.1 These test methods cover the determination of the loose, uncompacted void content of a sample of fine aggregate. NCHRP Report 555, Test Methods for Characterizing Aggregate Shape, Texture, and Angularity, compared different test methods for evaluating aggregate characteristics(Masad et al., 2007[1]). The complete FAA test procedure can be found in: A nominal 100 mL calibrated cylindrical measure is filled with fine aggregate of definite grading by allowing the sample to flow through a funnel from a fixed height into the measure. The fine aggregate angularity (FAA) test (Figure 1) is an indirect method of assessing the angularity of fine aggregate. The weight of aggregate specimens in the mould is recorded. Authorized Users. Use mass to calculate percent fractured particles unless percentage by particle count is specified. Superpave adopted ASTM Test Methods for Uncompacted Void Content of Fine Aggregate (C1252 Method A) to determine fine aggregate angularity (FAA). Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you with a lot of . The British Standard system measures flakiness and elongation with separate thickness and length gauges. Therefore, the higher the measured uncompacted void content, the more angular the material. Coarse aggregate angularity is important to ensure adequate aggregate interlock and prevent excessive HMA deformation under load (rutting). The FAA test estimates fine aggregate angularity by measuring the loose uncompacted void content of a fine aggregate sample. Determine the bulk specific gravity of the fine aggregate. Note 2 This testing method provides an indication of aggregate spherical shape, angularity, and workability within a mixture. The retained coarse sample is washed to remove any remaining fine material and then dried. 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 . Use a finger to block the opening of the funnel and pour the test sample into the funnel (Figure 9). All rights reserved. for this purpose. Friction angle derived from direct shear tests and slenderness ratio from the image analysis showed good correlations with rut depth. Angularity is a description of the degree of roughness, surface irregularities or sharp angles of the aggregate particles (Figure 2). This method uses a sample of a specified gradation that is obtained by combining individual sieve size fractions from a typical fine aggregate sieve analysis (Figure 3). The store will not work correctly in the case when cookies are disabled. Void Content Apparatus / Fine Aggregate Angularity $ 110.00 Item #: VC-9102 Qty USA and Canada Prices Only. This assumption is not always true. journal article, please contact ASTM Customer Service, 100 Barr Harbor Dr., PO Box C700, West To do so, This test is used to help ensure that the resulting HMA mixture will be resistant to deformation under repeated loads. ASTM will engage an independent consultant, subject to a confidentiality agreement, to review Requirements are based on the expected loading in the design lane for a 20-year period regardless of the anticipated design life. 4 (4.75 mm) portion of the as received material (Figure 5). SG-40A features a strike-off guide for the exact alignment of the spatula blade to the top of the Cylindrical Measure. The single hard copy print may only be distributed to other Click here for International Quotes Add to Cart Void Content Apparatus / Fine Aggregate Angularity Test Includes the Compaction Cylinder and the Glass Plate used to calibrate volume of cylinder. Reprints and copyright permissions can be requested through the. employees for their internal use within your organization; it may not be copied. 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. The percentage of particles having fractured faces is then compared to the specification requirements. incurred in verification and reimburse ASTM for any unlicensed uses. Fine aggregate angularity had significant impact on MTD while little on BPN . There are three methods used for finding void content. With method C, the measured void content depends not only on particle shape and texture, but gradation as well. and hard copy) belong to ASTM. 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. Masad, E.; Button, J.W. Hooper, ASTM International, at khooper@astm.org or phone: 610-832-9634). Users individually and may not be transferred to, or extended to, others. this License Agreement, that you understand it and that you agree to be bound by its Proportional calipers determine percentages of flat and elongated particles in coarse aggregate samples. When measured on any aggregate of a known grading, void content provides an indication of that aggregate's angularity, sphericity, and surface texture compared with other fine aggregates tested in the same grading. (2001[1]) recommend a reduction of the high-volume traffic specification to 43. The Fine Aggregate Angularity test directly calculates the angularity of the fine aggregate with the help of uncompacted void content of the aggregate. A study was undertaken to evaluate the ability of current Superpave FAA method to measure fine aggregate angularity, to determine if it can distinguish between good performing and poor performing aggregates, and compare FAA test results with other measures of particle angularity. Fine aggregate angularity (FAA) has been identified specifically a factor in determining asphalt pavement rutting susceptibility [4]. Fine Aggregate Specific Gravity Test Report (T84) Fine Aggregate Specific Gravity Test Report (T84) T85. Uncompacted void content provides an indication of angularity, sphericity, and surface texture for an aggregate of known gradation. LoginAsk is here to help you access Aggregate Test Pdf quickly and handle each specific case you encounter. (Summer 2000). Methods A and B are generally specified when trying to compare the angularity of different fine aggregate sources to remove the effect of gradation. you have The uncompacted void content is calculated using the bulk dry specific gravity of the fine aggregate determined by AASHTO T 84. 1993 AASHTO Flexible Pavement Structural Design, 1993 AASHTO Rigid Pavement Structural Design, http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_555.pdf, Climate Change Impacts on Pavements and Resilience, E-Construction in Practice: A Peer Exchange with WSDOT and TxDOT, AASHTO T 304 or ASTM C 1252: Uncompacted Void Content of Fine Aggregate. The Federal Highway Administration (FHWA) Office of Technology Applications recommended Pennsylvania Department of Transportation Test Method 621 as a way to measure this quality. The Compacted Aggregate Resistance (CAR) test is a procedure used to analyze the quality of asphalt. The fine aggregate has a moisture content of 2% and absorption of 3.4%, whereas the coarse . When ready, the sample is allowed to flow into the 100ml copper cylindrical measure. Fine aggregate angularity levels used in the Superpave system are below 40, 40 to 45 and above 45. 6 to 19. NCHRP Report 555. 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. Figure 1: Fine aggregate angularity test. If the void content were reasonably high, the angularity would also most likely be high. Figure 1: Angular Coarse Aggregate. password and for ensuring the authorized access and use of The ASTM Document. representations and warranties and prevails over any conflicting or additional terms of any service@astm.org. quote, order, acknowledgment, or other communication between the parties relating to its subject Uncompacted void content is calculated as the difference between the volume of the cylindrical measure and the absolute volume of the fine aggregate collected in the measure expressed as a percentage of the volume of the measure. The test sample should be large enough that the largest particle is no more than 1 percent of the test sample mass or the minimum test sample size should be as indicated in Table 1, whichever is smaller. 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). The angularity is oiten referred to as the particle shape and surface texture. 3. As with the FAA test, this loose uncompacted void content is indicative of the relative angularity and surface texture of the sample. The FAA test is based on the assumption that more fractured faces will result in higher void content in the loosely compacted sample; however, this is not always true. No modification of this Agreement will be binding, The specimen mass is determined, then void content is computed. downloading 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. Limited License. V = volume of the cylindrical measure (ml), G = dry bulk specific gravity of the fine aggregate. Commonwealth of Pennsylvania. a localized site Aggregate Test Scores will sometimes glitch and take you a long time to try different solutions. Figure 10: Sample falling into the cylindrical measure. ASTM has the right to verify compliance with this License The test results show FAA has a significant impact on skid-resistance on the macro-texture level but an only marginal influence was observed on the micro-texture level.
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