Materials used in rcc mix design a cementitious materials. Properties of hardened rcc are similar to those of conventionally placed concrete. The objective of this paper is to use the roller compacted concrete rcc for small dams design for the benefit it offers and its ability to incorporate spillways. Effect on hardened properties as may be seen from figure, the effect of compaction on compressive strength is dramatic. Beams using roller compacted concrete have produced flexural strengths exceeding 650 psi at 28 days. Concrete face rockfill dam compared to roller compacted concrete dam a case study of dam constructions in panama master of science thesis in the masters programme geo and water engineering tom karlsson and jonas tallberdepartment of civil and environmental engineering division of water and environmental technology. Investigating the possibility of constructing low cost roller. Roller compacted concrete rcc dams are attractive to many water and energy corporations around the world due to their ease in. Roller compacted concrete dams roller compacted concrete.
Rollercompacted concrete dams constructed primarily with rollercompacted concrete rcc. For example, the strength of concrete containing 10% of entrapped air air voids may be as little as 50% that of the concrete when fully compacted. Construction of roller compacted concrete dam in malaysia. Rollercompacted concrete dams olivenhain dam received the 2005 ocea award of merit. Rcc is being used also for the koysha dam under construction 2160 mw. For rollercompacted concrete rcc dams, we have experience in constructing gravity rcc.
Seismic analysis of roller compacted concrete rcc dams. Cement content is generally low typically 70 to kgm3. Specifically, the development of roller compacted concrete. The tech brief discusses rcc pavement uses and provides information on rcc mixtures and construction of rcc pavements. In two papers sra is applied to concrete dams and the system reliability is determined.
This webinar will provide a general overview of the development of rcc and how this material is being used in dams and spillways. Roller compacted concrete rcc represents a major advance in dambuilding technology. Rcc became very popular rapidly all over the world due to its low cost and fast deployment and is used for various purposes, including the construction of new dams, pavements, highways. Has 37 rcc dams with the highest being olivenhain dam in san. In dam construction, rollercompacted concrete began its initial development with the.
This paper compares the analysis of a roller compacted concrete rcc dam with and without galleries under seismic loading. Rcc consists of a zero slump mix of sand, gravel, cement, and water. Three key properties of rcc make it uniquely suited for dams. Mix design proportioning methods for no slump concrete applicable for roller compacted concrete. Rcc dams can be thought of as a series of bonded pavements or parking lots stacked on top of each consultant, schrader consulting engineers, walla walla, washington. This research was initiated with the objective of investigating the possibility of constructing roller compacted concrete dams using local material in order to reduce the dam construction cost. Achieving adequate compaction is essential in the development of the desired properties in the hardened material.
Roller compacted concrete rcc is a technology that has significant applicability to dams, roads, and foundations. Roller compacted concrete definition, advantages and. Rollercompacted 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. Rcc designs are based on a level of quality achieved during construction. Sadeghi iran thermomechanical analysis of roller compacted concrete dams 625.
Mar 31, 2015 the worlds largest roller compacted concrete dams. Roller compacted concrete dam rcd fly ash cementitious material. Roller compacted concrete rcc is a concrete of noslump consistencyin its unhardened state that is transported, placed, and compacted using earth and rockfillconstruction equipment. International conference roller compacted concrete dams.
Reliabilitybased assessment of concrete dam stability westberg. Roller compacted concrete rcc was pioneered in the 1970s as a low cost, rapid construction substitute for mass concrete placement primarily for large concrete dams. The worlds largest rollercompacted concrete dams 201503. This paper presents the process of the construction of roller compacted concrete dam in malaysia with batu hampar dam in rembau, negeri sembilan as the case study since malaysia has just started. Rcc was developed as a result of efforts to design more economical concrete dams that could be constructed rapidly. With an height of 250 m gibe iii is the worlds tallest rcc dam and with a. The traditional method of placing, compacting, and consolidating mass concrete is at best a slow process. Australia with limited use in pavement construction. Rollercompacted concrete pavement rcc has been used for several decades in specific applications, mostly for heavyduty industrial pavements. Jan 01, 2003 a book of broad interest to professionals, dam engineers and managers, and to organizations responsible for dam development and management, rcc dams offers a topical account of the design and operation of roller compacted concrete dams, describing the latest developments and innovative technologies in the field. Publications are provided in portable document format pdf. Roller compacted concrete provides an excellent construction platform and allows the thickness of the final concrete pavement surface to be reduced. This tech brief presents an overview of the best practices for rollercompacted concrete pavement. The dam was constructed with rollercompacted concrete.
Pdf rollercompacted concrete dams rehabilitation in. The compaction depends on many variables, including the. The roller compacted concrete rcc dam is a new concept employing an inherently less expensive leaner concrete mix to form the core of the dam and allowing further economies through very rapid construction. Inspection of concrete and masonry dams module introduction overview of the module in this module, you will learn the recommended methods for inspecting concrete and masonry dams and for detecting deficiencies. In terms of material types, concrete dams would include dressed masonry, rubble masonry, colcrete, plum concrete, cyclopean concrete, roller compacted concrete rcc and ordinary mass concrete of various aggregate sizes and strengths see chapter large dams. Dragados has built dams of different types and materials. Roller compacted concrete rcc is used throughout the world for new dam construction. The software package for the thermal control of concrete dams and its engineering applications 615 s. A number of mixture proportioning methods have been successfully used throughout the world for roller compacted concrete structures. Producing rollercompacted concrete from a ready mix. Rcc is commonly used for the construction of major dams in.
Slope layer method for the construction of rcc dams pdf. Threedimensional earthquake analysis of rollercompacted concrete dams 2371 kf p ke f ke f r v bet f cfb e fdv e 3 where cf is the elasticity matrix consisting of diagonal terms in eq. In the united states, rcc is also used extensively for modifying dams with safety deficiencies including stability buttresses for concrete dams, overtopping protection for both concrete and embankment dams, and for constructing spillways. The purpose of this manual is to provide information and guidance on the use of roller compacted concrete rcc in dams and other civil works structures.
Materials used occasionally 30 to 40 years ago, in hindsight, could be considered to be rcc. International conference roller compacted concrete. Bureau of reclamation reclamation has used rollercompacted concrete rcc. Information bulletin international conference roller compacted concrete dams 14 november 20, new delhi, india organized by indian committee on large dams central board of irrigation and power in collaboration with. The following 111 pages are in this category, out of 111 total. For roller compacted concrete rcc dams, we have experience in constructing gravity rcc and arch gravity rcc dams.
Importance of using roller compacted concrete in techno. Design and construction considerations for hydraulic structures. Facing systems for rollercompacted concrete dams and spillways. Bluegrass companies has over 3 decades of experience with roller compacted concrete dams. Roller compacted concrete construction process in dam in cambodia. Roller compacted concrete has several advantages and disadvantages when compared to traditional dam construction.
Mix design of roller compacted concrete the constructor. But it has the drawback of a rough surface with little aesthetic appeal, leading some owners to use it as a subbase with an asphalt overlay. The dahuashui dam is an arch dam on the qingshuihe river near pingzhai in kaiyang county. Rollercompacted concrete rcc, because of its superior properties, synopsis. Rollercompacted concrete rcc dams are especially prone to cracking while relatively new. Yang china constitutive modelling of roller compacted concrete 619 f. However, the most common mixture proportioning methods are variations of the following two general approaches. Roller compacted concrete construction process in dam in. Roller compacted concrete dams seismic retrofitting. What links here related changes upload file special pages permanent link page. The worlds largest rollercompacted concrete dams 2015. Bureau of reclamation reclamation has used rollercompacted concrete rcc for a wide variety of applications, including stability buttresses for masonry gravity and concrete arch dams, overtopping protection and upstream slope protection for embankment dams, new gravity dams, new spillways and spillway. Jun 21, 2014 roller compacted concrete construction process in dam in cambodia.
This tech brief presents an overview of the best practices for roller compacted concrete pavement. It is located in jordan on the wadi al hasa about 30km east of the dead sea and 50km south of the town of karak. Rcc dams have the virtues of saving a great deal of concrete, building quickly, making project cost down and early bringing into playing project advantages and so on. Rollercompacted concrete, which emerged as a viable means of constructing dams in the 1980s, allows much faster and less expensive construction than traditional methods. Design and construction considerations for hydraulic. Rollercompacted concrete pavements as exposed wearing surface version 1. Rollercompacted concrete rcc started in the us and canada near 30 years ago, at that time it was a new method to construct gravity dams or rehabilitated. Rollercompacted concrete dams describes the development of rcc dams, the.
What links here related changes upload file special pages permanent link. Crete rcc dams in the earthquake zone should be taken. But unlike conventional concrete, rcc is a drier mix that is stiff enough to be compacted by vibratory rollers. Investigating the possibility of constructing low cost. The objective of this paper is to use the roller compacted concrete rcc for small dams design for the benefit it. A book of broad interest to professionals, dam engineers and managers, and to organizations responsible for dam development and management, rcc dams offers a topical account of the design and operation of roller compacted concrete dams, describing the latest. Fly ash is important material for rcc dam, and usually replaced from 20 to 30 % for cement. Report on roller compacted mass concrete reported by aci committee 207 aci 207. For dams made up of vibrated concrete, the company has constructed the following types. Jul 25, 2017 in addition to reservoir siltation assessment, operation spillways have been the major constraint on the reliability of these types of dams. Concrete is the most common building material in the world and it consists of aggregates,cement and water that harden over time. Inspection of concrete and masonry dams fema guidelines. More than 350 roller compacted concrete rcc dams have been built or are waiting to be built around the world since the rcc technique was applied to dam construction in the 1980s. This guide for rollercompacted concrete pavements is a product of the national concrete pavement technology center national cp tech center at iowa state universitys institute for transportation, with funding from the portland cement association.
Elements discussed include investigation and selection of materials, mixture proportioning, material properties, design and. 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 andor texture. Using the correct mixer is vital to ensuring a uniform mixture and a consistent supply to the paver. Concrete face rockfill dam compared to roller compacted. The development of roller compacted concrete rcc caused a major shift in the construction practice of mass concrete dams and locks. Roller compacted concrete 149 the application of rcc at tarbela was extremely successful as and became quite significant over the next 40 years and a new age of concrete dam construction was born. Pages in category roller compacted concrete dams the following 111 pages are in this category, out of 111 total. It was built in two stages from 1914 to 1922 to provide a raw water supply for. Construction of roller compacted concrete dams in hot arid regions. Recent design and construction trends will be presented in the areas of mix designs, jointing, facing systems, and placement procedures. To build the roller compacted concrete rcc cuchillo negro dam, pcl civil constructors inc. Hence, the technique of constructing dams has been quickly.
Tannur dam is a 60m high, 250m long roller compacted concrete rcc gravity dam with a reservoir capacity of 17 million cubic metres. Rollercompacted concrete has several advantages and disadvantages when compared to traditional dam construction. Roller compacted concrete rcc, because of its superior properties, synopsis. Application of rollercompacted concrete for rehabilitation. The purpose of this manual is to provide information and guidance on the use of rollercompacted concrete rcc in dams and other civil works structures. Loch raven dam is a 110foothigh, 700footlong, concrete gravity dam. This paper will discuss the advantages of roller compacted concrete rcc for use in mass concrete gravity dams as compared to other types of.
Report on rollercompacted mass concrete reported by aci committee 207 aci 207. The use of noncommercial fly ash in roller compacted. Regardless of the projects size or importance, field quality control is necessary. Roller compacted concrete dam and utilization of fly ash in japan kimitaka uji1 summary rcc dams have been constructed in order to reduce the construction period and construction cost due to the decrease of cementitious materials. Titan slipform concrete paver for concrete faced rockfill dams.
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. Completed in 2010, the yeywa dam is located on the myitnge river in central myanmar. Over the past decade, roller compacted concrete rcc has been successfully used on projects ranging in complexity from large dams to small building pads. The essential concept is to develop a dry mix that is placed like soil cement, develops the strength of concrete, and does so with much less generated heat. Roller compacted concrete and the role of coal combustion. Rollercompacted concrete rcc or rolled concrete rollcrete is a special blend of concrete. In respect of autogenous and drying shrinkage and the effects of relaxation creep during the hydration cycle, roller compacted concrete in dams has to date been universally assumed to behave in the same manner as conventional mass concrete, despite notional evidence to the contrary on prototype dam structures, particularly in respect of highpaste rcc. These applications were typically stabilized gravel. Since then, we have been involved as a lead designer or subconsultant on more than 30 rcc dam projects, totaling more than 2 million cubic yards.
Technical brief on rollercompacted concrete pavement. Threedimensional earthquake analysis of rollercompacted. Roller compacted concrete rcc appeared as a feasible new type of construction material for concrete gravity dams. Rcc is placed with earthmoving equipment, and the longterm strength of rcc is similar to concrete. Protocol audit assessment of dahuashui hydropower project pdf. This research was set with the objective of investigating the possibility of. Nnp1pc first roller compacted concrete placement at main dam 30 may 2016 duration. Because the roller compacted concrete base allows for a reduction in the thickness of the conventional concrete pavement, multilayer systems can be used costeffectively in highway, airport, and. International conference roller compacted concrete dams 14 november 20, new delhi, india organized by indian committee on large dams central board of irrigation and power in collaboration with punatsangchhu hydroelectric project authority thdc india limited incold international commission on large dams.
The 1,500 feet of conveyors with a maximum belt capacity of almost 9 cubic yards per minute delivered the rcc mix to the jobsite without interruption or downtime. A new understanding of the early behaviour of roller. Leader in rollercompacted concrete rcc technology the first rcc dam in the u. Rollercompacted concrete for dam safety modifications. With more than 400 major rcc dams completed to date, including several arches, rcc technology is now considered suitable for the construction of dams of over 200 m in height. Gannett flemings first rcc design began four years later. Roller compacted concrete, which emerged as a viable means of constructing dams in the 1980s, allows much faster and less expensive construction than traditional methods. The firm is at the forefront in the use of rcc in dam construction with the design of some of the largest dams of africa such as gibe iii 1870 mw, 6. Batu hampar dam assrul reedza zulkifli1, abdul rahim abdul hamid2, mohd fadhil arshad3, juhaizad ahmad4 faculty of civil engineering1.
Fatigue characteristics are also similar to typical concrete paving. Conveyor system speeds rcc dam construction concrete. The effects of different sizes and shapes circle, octagon and square of gallery have also seen in the analysis. Concrete construction engineering handbook, second edition.
To aid the aim, kinta roller compacted concrete rcc gravity dam is selected as a case study and fe abaqus software is used to investigate the responses of the dam under ful reservoir hydrostatic. The rollercompacted concrete rcc dam is a new concept employing an inherently less expensive leaner concrete mix to form the core of the dam and allowing further economies through very rapid construction. Pdf construction of roller compacted concrete dam in. Seismic retrofitting dams is a vital part of maintenance. Mix design proportioning methods for roller compacted concrete rcc. Since upper stillwater dam was designed and constructed in the 1980s, the. Roller compacted concrete rcc was first used as the main construction material for a large mass gravity dam in 1982, since when it has gained universal acceptance.
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