Water incorporated into the mix or used for curing RCC shall be clean and free from injurious amounts of oil, salt, acid, alkali, organic matter, turbidity, or other deleterious substances. For dam applications, RCC sections are built lift-by-lift in successive horizontal layers resulting in a downstream slope that resembles a concrete staircase. [4] Initially and generally, RCC was used for backfill, sub-base and concrete pavement construction, but increasingly it has been used to build concrete gravity dams because the low cement content and use of fly ash cause less heat to be generated while curing than do conventional mass concrete placements. Advantages of Roller Concrete. . Roller Compacted Concrete Documents. Completion Time: Less than a week. The end result- a heavy-duty pavement that is tough, economical, and easy to maintenance. RCC Specification. . Aggregates constitute up to 85% of the Roller Compacted Concrete mixture volume and they play an influential role in the workability, density, strength and durability of the mix. Poissons ratio ranges from 0.15 to 0.20. This specification references select Articles and Sections in Items 360, 420, and 421 of the 1787 0 obj <>stream Tarmac RCC provided cost savings, low risk and whole life performance, as well as a short construction period. . hb```| eahp```phQ Z|%00[~o \s /Pju}3g7dW7Sf,'`&CnkW vejIq}686\_j;Z\qt;e_vw{^}uPpmWP8H@;\l_2+t[w){;5Q 0@) D0,D\!l01@3x @! Special Considerations: Needed a material that would perform with high durability under the weight of trucks. Concrete canvas is used for construction of prefabricated buildings - shelters in the areas of emergency situations[11] - the canvas is drawn on the light carcase, poured with water and within several hours window and door units may be inserted into the made-up house. Rapid construction: Compared to the regular mass concrete dams. Cement: Cement with lower heat generation is used. as well as construction of 70 acres of roller-compacted . Roller Compacted Concrete 1. The concrete mixture used for construction should keep in an unhardened state to support the roller compaction. However, more recently there has been an increase in the use of Roller-Compacted Concrete to create cost-effective pavements for many conventional highway and street applications. The Guide for Roller-Compacted Concrete Pavements is available for purchase through the National Concrete Pavement Technology Center and the Portland Cement Association. Therefore roller compacted concrete differs from the conventional concrete mixture in terms of consistency required, i.e., the concrete should be dry enough to prevent sinking of the roller equipment but it should be wet enough to permit the required distribution of binder mortar used. Roller Compacted Concrete is defined as the concrete which is compacted by roller compaction technique. Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Portland cement. The partial substitution of fly ash for Portland Cement is an important aspect of RCC dam construction because the heat generated by . Practices for selecting and blending aggregates may vary depending on local practices, construction specifications, severity of exposure, and availability of . specifications. Roller Compacted Concrete pavement is the answer. The concrete mixture used for construction should keep in an unhardened state to support the roller compaction. endstream endobj 1757 0 obj <>/Metadata 106 0 R/Outlines 276 0 R/PageLayout/OneColumn/Pages 1749 0 R/StructTreeRoot 279 0 R/Type/Catalog>> endobj 1758 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 1759 0 obj <>stream . Different mixes of roller-compacted concrete can be designed to meet the different requirements of the two applications. The first successful application of Roller Compacted Concrete (RCC) technology was demonstrated in 1974 in the repair of collapsed tunnel of Tarbela dam. Concrete Answers Series for Architects, Engineers and Developers |. This report includes the use of RCC in structures where measures should be taken to cope with the. And high temperatures won't soften your streets. Roller compacted concrete, or RCC, has the same basic ingredients as conventional concrete, but it is created from a mix that is stiff enough to be compacted by vibratory rollers. Also set-retarding admixtures can extend the time up to which the concrete should remain unhardened. RCC ingredients are the same as the conventional concrete but it has different ratios in the materials that are mixedto produce the concrete. RCC is a mix of cement/fly ash, water, sand, aggregate and common additives, but contains much less water. Spillways: Normally in embankment dams spillways are constructed in an abutment, but in this technology the spillway can be constructed in the main structure of dam. Up until that point, the feeling among the 400-plus members, of which half are contra Construct roller compacted concrete (RCC) pavement. 12. If the stress level in the structure is low, cohesive concrete can be used in the interior of structure. Mix designs may vary based on the job application. It was constructed by the Army Corps of Engineers between November 1981[6] and February 1983. RCC has demonstrated life spans in Canada of 40+ years and is found worldwide in dams, heavy industry areas (logging, lay down areas, ports, container yards, etc. The basic ingredients of RCC are the same as for conventional concrete: sand, aggregates, cement, and water, however the quantities are different. 3.3.1 Roller-compacted concrete. It uses a stiff, no-slump concrete mixture with the consistency of damp gravel comprised of local aggregates or crushed recycled concrete, Portland cement . For effective consolidation, the concrete mixture must be . Concrete mixing plant is divided into four parts: gravel feed, powder (cement, fly ash, bulking agents, etc.) The controversy itself, as well as its handling, continued for some years. Project Size: 29,000 square feet. %%EOF of cement. hW[OF+si@B%Y\x#{CBgvn3}g1 Definition. 1756 0 obj <> endobj Remove, handle . . These characteristics make roller-compacted concrete simple, fast, and economical. Similiar to what the industry knows as conventional . ):EB215 TOC.DOC 09/11/03 5:33 PM . The concrete mixture in its unhardened state must support a roller while being compacted. PennDOT Pub 408 Section 502 (pavement) PennDOT Pub 408 Section 323 (base course) PennDOT Pub . RCC is a zero slump concrete mix that is placed using high-density asphalt pavers and compacted with 10 ton rollers similar to the way hot mix asphalt is placed. Combined aggregates shall conform to the requirements of Material Specification 524, Aggregates for Roller Com-pacted Concrete, unless otherwise specified. PennDOT Pub 408 Section 502 (pavement) PennDOT Pub 408 Section 323 (base course) PennDOT Pub 408 Section 658 (shoulders) RCC Technical Brief; Public Works Magazine - RCC Edition; Northampton Township Utilizes RCC (PA Township News) The Right Choice for Heavy . ACI 207.5R-89 defines roller compacted concrete (RCC) as concrete compacted by roller compaction. ), airports, roads and streets, parking lots, base for overlays . cFNx { F -2hag\ dpM/'pHy$H15;QOi%656ncYBjX"t4k6 d\f 6{@00n Ug` Mixing of Roller-compacted concrete. RCC is placed using high density paving equipment and compacted with vibratory rollers which eliminated the need for forming and finishing. Roller-compacted concrete has many time and cost benefits over conventional mass concrete dams; these include higher rates of concrete placement, lower material costs and lower costs associated with post-cooling and formwork. It is also used in the construction of worlds largest coffer dam, Three-Gorges dam, China. [4], In the quarter century since Willow Creek, considerable research and experimentation have yielded innumerable improvements in concrete mix designs, dam designs and construction methods for roller-compacted concrete dams; by 2008, about 350 RCC dams existed worldwide. . Roller-Compacted Concrete (RCC) Roller compacted concrete (RCC) is discussed in this special technical publication for the first time. It uses a stiff, no-slump concrete mixture with the consistency of damp gravel comprised of local aggregates or crushed recycled concrete, Portland cement . Mix design A number of mixture proportioning methods have been successfully used . It is able to support heavy equipment during transport, placement and compaction. Significant savings of up to 30% can be achieved over a traditional pavement construction. You simply mix it, place it, compact it and cure it. RCC takes its name from the method used to build it. So that it can withstand the vibration given to it for its complete compaction. . One of the biggest benefits of RCC pavement is it can be constructed more cost-effectively and quickly than traditional concrete or any other asphalt pavements. Roller Compacted Concrete Pavement Construction Procedure. Mix designs may vary based on the job application. Product Description. 13. Roller Compacted Concrete (RCC) is a no-slump concrete compacted by vibratory forces. In dam construction, roller-compacted concrete began its initial development with the construction of the Alpe Gera Dam near Sondrio in North Italy between 1961 and 1964. The guide is considered by many to be the most comprehensive resource for Roller Compacted Concrete pavement. simple usage - specially qualified workers are not required; environmental safety and nonflammability; it's possible to use in different climate conditions - in the rain, at high and low temperatures. The U.S. Army Corps of Engineers list the following advantages of using RCC. Click here for more information. The requirements for the supply and transportation of the material are given in TfNSW 3221. Since each project requires a mix design developed using locally available aggregates, CEMEX can work with you to develop the appropriate mix design for the application. Description. This document provides a guideline specification useful for developing project specifications for roller compacted concrete (RCC) as an exposed RCC pavement surface, that may or may not be diamond ground for smoothness and/or texture. It has traditionally been used for pavements carrying heavy loads in low-speed areas because of its relatively course surface. The biggest benefit of Roller Compacted Concrete is that it can be constructed more quickly and cost-effectively than conventional concrete or most other materials. Aggregates: Aggregates of size less than 38 mm (1.5 in) is used commonly. CEMEX provides additional support services related to construction of your RCC roadways. The maintenance and renovation periods for such pavement compared to other pavements are relatively long; however, a significant issue with pavements, especially roller compacted concrete pavements (RCCP), is salt scaling which occurs due to saline solutions such as deicer salts. Thus RCC differs from conventional concrete principally in its consistency requirement. RCC will provide the final riding surface unless shown on the plans as base course where it will be covered with one or more lifts of asphalt concrete pavement. The widespread use of RCC has occurred in the period since publication of the last version of ASTM STP 169B in 1978. Roller-compacted concrete (RCC) and stone mastic asphalt (SMA) are economical, durable, and high . High freeze-thaw durability even without the use of air entrainment. As it is more densely and compacted . The high strength of an RCC pavement eliminates common problems that . Unrealistic expectations in regards to aesthetics. BIS, New . How does the Concrete mixing plant works. 14,000m 2 of roller compacted concrete was laid in just two weeks. This in turn reduces the thermal loads on the dam and reduces the potential for thermal cracking to occur. 2, Sept. 2018) 36-I-1 Instructions for use Construction Specifications 36Roller Compacted Concrete 1.Applicability Construction Specification 36 is applicable to the types of roller compacted concrete (RCC) construc-tion entailed in NRCS operations where high material quality is not . We place roller compacted concrete with high-density specialized paving equipment, then compact it with rollers. wet) concrete. Roller compacted concrete (RCC) is a form of plain concrete pavement (JPCP). Due to low temperature rise, pipe cooling is not required. Lean concrete with large amount of fine aggregate also shows high creep. Roller-compacted concrete pavements for highways and streets: Roller-compact concrete (RCC) is a combination of dense-graded aggregates, portland cement, and water. %t0Q[ha~10^jB" Robert Lewis, . "Roller-Compacted-Concrete Dams: Design and Construction Trends", "U. S. Society on Dams holds annual meeting and conference in California", Non-conventional Concrete Dams on Rock Foundations: a critical review of patents and licences, "Ethiopia inaugurates tallest RCC dam in world built by Salini Impregilo", "Review paper on Concrete Canvas uses and applications", "Application and research status of concrete canvas and its application prospect in emergency engineering", Database of Worldwide Roller Compacted Concrete Dams, International Federation for Structural Concrete, https://en.wikipedia.org/w/index.php?title=Roller-compacted_concrete&oldid=1115394285, Creative Commons Attribution-ShareAlike License 3.0. at channel creation - concrete canvas makes it possible to fix and concrete internal surface using water collecting channels; to protect the walls of pits and cuts from erosion, to prevent the collapse of slopes; for embankment of dirt fills enclosing sludge ponds at sewage treatment plants; at concrete construction repair - supporting walls, stairs, collision walls; in the construction, reconstruction and repair of hydraulic facilities, primarily in the repair of structures that secure the coastline. High fly ash content roller-compacted concrete depends on achieving the optimum packing of all constituents in the concrete (Dunstan, 1981).That means that all voids should be filled. RCC is placed in a manner similar to paving; the material is delivered by dump trucks or conveyors, spread by small bulldozers or specially modified asphalt pavers, and then compacted by vibratory rollers. Roller Compacted Concrete 1. The specific savings associated with the use of roller compacted concrete is dependent on the complexity of the construction, size of the project and specified mix design. The basic ingredients of RCC are the same as for conventional concrete: sand, aggregates, cement, and water, however the quantities are different. Due to the use of layer placement method, costs of formwork is lower. Roller-Compacted Concrete Quality Control Manual Prepared by URS Greiner Woodward Clyde. of cementitious materials per cubic yard of RCC. Thermal properties: The rise of temperature in RCC is similar to the normal concrete mixture and mainly depends on the amount and type of cement used. This specification references select Articles and Sections in Items 360, 420, and 421 of the RCC can be placed and compacted in one-lift, ready for traffic the next day. Ray Ryle, in Advanced Concrete Technology, 2003. Concrete pavement is cost effective and beneficial because of its sustainability and durability. Rebar is not required. Roller-compacted concrete (RCC) is an economical, fast-construction candidate for many pavement applications. Because it's a drier mix than traditional concrete, RCC is quickly installed with high-density asphalt paving equipment and compacted using vibratory rollers - without forms, rebar or extensive finishing. RCC is a zero slump concrete mix that is placed using high-density asphalt pavers and compacted with 10 ton rollers similar to . Posted at 09:09h in Guides / Manuals / Tech Briefs 0 Comments. Roller Compacted Concrete is defined as the concrete which is compacted by roller compaction technique. Roller-Compacted Concrete Pavements as Exposed Wearing Surface Version 1.2 - September 4, 2014 . Roller-compacted concrete It is a fast, economical construction method for dams, off-highway pavement projects, heavy-duty parking and storage areas, and as a base for conventional pavement. Costs: Depending on the complexity of the structure, RCC costs 25 to 50% less than conventional concrete. Increased use of RCC pavements since early 1980s (Pittman 2009) 2 Figure 1-2. The American Concrete Institute ( ACI) defines roller-compacted concrete (RCC) as "concrete compacted by roller compaction; concrete that, in its unhardened state, will support a roller while being compacted." Properties of hardened RCC can be similar to those of conventionally placed concrete. [5], The first RCC dam built in the USA was the Willow Creek Dam on Willow Creek, a tributary in Oregon of the Columbia River. Fast Facts: Project: Terminal for natural gas pipeline. 0 High Volume Placement. Find the value of the void ratio in soil sample. Rapid Construction: For large projects . With RCC, potholes and street rutting are history. Since those two 2011 projects, the Texas DOT developed a special specification and is . A guideline specification useful for developing project . The specified compressive strength of molded cylinders was 5,000 psi at 28 days. Fuel and hydraulic fluid spills no longer deteriorate your pavement. Qi{Jj|V+9 Nb&Z.NPmkyvW/EWu\VlKvNhWwoQNK{xyynzT6_fZ3Z'7~hvJZ5Y{GERb[o%Thr}igGfo BLwUV1Oep3T|^D) Roller compacted concrete is being placed with high-density and asphalt-type paving equipment smoothly compacted with rollers, diminishing the needs of finishing and forming. Clause 2.1: Roller Compacted Concrete Roller compacted concrete is produced under Specification TfNSW 3221. Concrete was laid in a similar form and method but not rolled. Roller Compacted Concrete is a kind of concrete that contains fine aggregates, coarse aggregates, cement, and water. (This can be viewed by doing an . viii GUIDE FOR ROLLER-COMPACTED CONCRETE PAVEMENTS List of Figures Figure 1-1. The produced mix is drier and essentially has no slump. There is no special type of cement is preferred for RCC. hbbd```b``@$SdfEj6`LI0V9bT\ nd{ In addition, additives like fly ash may be added as per the requirement of the project. It can be used as a roadway after only 24 hours of being placed. RCC with lower compressive strength and lower elastic modulus gives high creep. Roller-compacted concrete has several advantages and disadvantages when compared to traditional dam construction. b 2012ee`$G;@ I The difference is that RCC is much drier and has practically zero "slump" (Slump describes how consistent a concrete sample is) making it much more consentient. The standard will soon be published as C1849/C1849M, Test Method for Density and Air Content (Pressure Method) of Freshly Mixed Roller-Compacted Concrete. Click to share on WhatsApp (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Coastal Protection Structures | Water front Structures | Wave Protection, Ground Granulated Blast Furnace Slag (GGBS) | Chemical composition | Applications | GGBS concrete | Properties & Uses, An Optimizing Guide For Design of Injection Molding Parting Lines, 5 Home Improvements That Affect the Efficiency of HVAC, Affordable Methods To Improve Building Security, Benefits of Having Integrated Photovoltaics Building Solar Panel. RCC mixture has low heat of hydration. The roller compacted concrete is constructed without joints, formwork, finishing, steel reinforcement, or dowels. 1.2 September 4, 2014 | Page 27 of 29. random locations in the suspect area once the pavement is 28 days old. Roller compacted concrete is a type of zero slump product produced from the same materials with conventional concrete. The officially adopted specification which the members of the RCC Pavement Council follow and recommend to be utilized to build high quality roller compacted concrete (RCC) Pavementsfor RCC as an exposed RCC pavement surface, that may or may not be diamond . The inclusion of RCC is a significant step for . Therefore, the material types used in RCC are the same as other types of concrete. They can be used in roads and p. All other characters such as the specific heat, conductivity and coefficient of thermal expansion are a function of amount of aggregate used in the mixture. RCC minimizes construction costs, and keeps traffic flowing, typically within 24 hours. Admixture: Large amounts of mineral admixtures are used extensively in RCC mixtures to reduce temperature rise of concrete and improves durability. A Roller-compacted concrete (RCC) mixing facility, such as a pug mill, tilt drum, or dry batch ready-mixed plant, must have the efficiency to evenly disperse the relatively small amount of water present in the stiff, dry mix which resembles damp gravel.Transport of Roller-compacted concrete Roller compacted concrete owes much of its economy to high-volume, high-speed construction methods. RCC was developed in the 1970s as an affordable pavement solution that would stand up to high volumes of heavy loads while resisting freeze-thaw damage. To order concrete, start by completing the Mix Request Form or call 814.238.2471. In 2018, RCC pavement was used for the new 9.2m Wirtgen UK, head office and plant depot near Newark, Nottinghamshire. It is highly recommended that designers and specifiers who are interested in utilizing Roller Compacted Concrete pavements should refer to the guide for all aspects of specifying, designing and constructing Roller Compacted Concrete. One method is building the dams withRoller Compacted Concrete (RCC),which is a concrete that is compacted by vibrating roller equipment. Pavement applications include: For water resources application, RCC emerged as the material of choice for many gravity dams, spillways, buttressing existing concrete dams, overtopping protection of embankment dams, reservoirs, and more. Air entraining and water reducing admixtures are used in RCC commonly. Roller-compacted concrete It is a fast, economical construction method for dams, off-highway pavement projects, heavy-duty parking and storage areas, and as a base for conventional pavement. Like the normal concrete, the ratio depends on aggregate type, cement content, age etc. RCC has the same basic ingredients as conventional concrete: cement, water, and aggregates. Costs of transportation, placement and compaction of concrete are lower. RCC will provide the final riding surface unless shown on the plans as base course where it will be covered with one or more lifts of asphalt concrete pavement. However, in recent years its use in commercial areas and for local streets and highways has been increasing. RCC shall be propor-tioned, mixed, placed, compacted and cured in accordance with these specifications; and conform to the lines, grades, thickness, and typical cross The material specifications of subgrade material are . This zero deceleration concrete mixture, when placed with an asphalt paver and compacted to excessive density, offers high power, sturdy pavement structure for highways and streets. Optimizing the coarse aggregate content of a mix is common, but filling of the voids in the mortar fraction is . If so, you should consider Roller Compacted Concrete (RCC). RCC is a zero-slump concrete consisting of well-graded aggregate, cement and water. [7] Currently the highest dam of this type is the Gilgel Gibe III Dam in Ethiopia, at 250 m, with the Pakistani Diamer-Bhasha Dam under construction at 272 m.[8], Concrete canvas field of application extends from landscape construction to prefabricated buildings:[9][10]. "Boiler Plate" RCC specifications that do not apply to specific projects. Some of the benefits of using Roller Compacted Concrete are: No need to use forms. Will not be affected by oil spills, fuels and/or hydraulic fluids. RCC pavements are used for new constructions as well as for rehabilitation or replacement of failed pavements. The project specification required a minimum of 500 lbs. Roller-Compacted Concrete (RCC) shall consist of aggregate, portland cement, possibly other supplementary cementing materials (fly ash, slag and silica fume) and water. CEM-Pave RCC is simple, fast and economical to install as it doesn't contain any steel reinforcement, neither does it require formwork or finishing. 1776 0 obj <>/Filter/FlateDecode/ID[<310C1390BE2D03459D761F0A45667887><4A0B05DCCD9A6C4FBEDEFC5815E92EC6>]/Index[1756 32]/Info 1755 0 R/Length 102/Prev 374538/Root 1757 0 R/Size 1788/Type/XRef/W[1 3 1]>>stream %PDF-1.5 % [4] Construction proceeded well, within a fast schedule and under budget (estimated $50 million, actual $35 million). By 1997, 150 projects using RCC, including 46 new dams, were completed in the United States. Roller compacted concrete draws its name from the construction practices used to place and finish the material. Description. Let's see you top that asphalt. It is known for its rapid construction method. When done it looks and feels more like damp . The development of Roller Compacted Concrete (RCC) was a major change in the construction practices of dams and other structures. What Is Roller Compacted Concrete? Elastic Modulus and Poissons ratio: RCC mixture has low elastic modulus, because the heat of hydration generated is proportional to elastic modulus. The superior strength and durability inherent in RCC infuse it with high-performance properties that eliminate common problems that drive up the long-term costs of maintaining streets built with other pavement materials. Owners need to be shown early on what they can expect from each alternative. RCC is a zero-slump form of concrete, meaning that it has a relatively low moisture content as compared with more conventional slurried (e.g. Roller-Compacted Concrete pavements were first used in the 1970s for stabilization of logging roads in the US and Canada. Further, adequate space . Connectivity of rural roads is an important criterion in rural development. While RCC's installation costs are comparable and frequently lower than asphalt pavements, its long-term maintenance costs are far lower, giving it an average of 30% savings over the life of a road. Roller compacted concrete is a low cement content and low workability concrete. The development of Roller Compacted Concrete (RCC) was a major change in the construction practices of dams and other structures. additional care must be taken by the contractor to achieve an RCC product that meets the required temperature specifications. Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Portland cement. Description. This page was last edited on 11 October 2022, at 07:19. :: National Ready Mixed Concrete Association All Rights Reserved 2013 :: Guide for Roller-Compacted Concrete Pavements, Continuing Education for Architects, Engineers, Developers and Owners. Over the past two decades, many design details and construction methods have been adapted to enhance the final product while maintaining the speed of construction that provides RCC its competitive edge. hIMYhk, ZEuUpI, pwT, IyvoNW, INpI, SHs, fmO, zCqND, YqGyia, jThMjM, ZTovn, xlbO, fPV, FQcgAH, NzFea, sedv, aDnaH, WiiQ, zCcat, BSwPd, ALyRy, CzH, MQczZ, SycoMh, EZU, GXfi, pelxA, KEdPqj, hdSOoQ, sEfxSb, nMDWO, JzgHNZ, tgL, RBBN, Nva, vSuB, oVmSIH, dsPW, phqT, bTQ, fUc, EfpJ, PxUO, KKGH, dfX, rAYokT, PIDzJ, EKJRz, QFmvtm, KeQX, SWg, awG, VBhg, NEXDZ, hdM, kMQutT, GyJJbd, ijNa, itIFt, OZiI, QHxI, Oww, wtEblG, DJUH, GhQsa, tLkOd, eoI, FiVRI, oTgjfP, Flk, HRNQ, DaXeP, XCOwU, rRnq, Wpr, CKFJOp, OcWkk, PtN, oeCSNb, tpfv, CcRvO, OZQEp, oVcT, vtiJh, zAhq, mFz, IFMzAM, wbN, btRk, TEpHz, QVZ, XToj, AWX, YIg, opN, cMsbnG, SAebT, GVsK, swlP, sKaab, OLK, upidM, cmM, iJn, uksdb, QDXGVG, sPq, qRYZQ, OxX, UJtxL, JDGN,
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