Roller compacted concrete rcc became an accepted method for dam construction during the latter half of the 1980s and during the early 1990s there has been a very rapid growth in this form of dam. Roller compacted concrete pavement rcc pavement council. Development of design mix roller compacted concrete dam at. 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 tallberg. Rollercompacted concrete rcc started in the us and canada near 30 years ago. Rollercompacted concrete, which emerged as a viable means of constructing dams in the 1980s, allows much faster and less expensive construction than traditional methods.
Roller compacted concrete differs from conventional concrete in its gradation requirements. 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. Inadequate spillway capacity is a common problem with many dams. The strength of rcc is a function of wc ratio only for mixture with vebe time of 15 to 20 sec. Rcc was developed as a result of efforts to design more economical concrete dams that could be constructed rapidly.
Background in chapter 3, the specific behaviour occurring in concrete during the hydration temperature development and dissipation cycle in large dams was investigated through referenced literature. Pdf rollercompacted concrete dams rehabilitation in terms of. Roller compacted concrete rcc appeared as a feasible new type of construction material for concrete gravity dams. Roller compacted concrete construction process in dam in cambodia. Roller compacted concrete rcc dams are attractive to many water and energy corporations around the world due to their ease in construction and low construction cost. Inspection of concrete and masonry dams fema guidelines. 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 2015.
Titan slipform concrete paver for concrete faced rockfill dams. Elements discussed include investigation and selection of materials, mixture proportioning, material properties, design and. 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. This study investigated the use of either 15% or 20% reclaimed asphalt pavement rap by weight in the production of roller compacted concrete rcc, replacing with coarse aggregate, and the. 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. 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. Achieving adequate compaction is essential in the development of the desired properties in the hardened material. This research was set with the objective of investigating the possibility of. Rollercompacted concrete rcc is used throughout the world for new dam construction. Rollercompacted concrete dams constructed primarily with rollercompacted concrete rcc. Rollercompacted concrete rcc, a durable paving material that carries heavy loads, is now developing as a fast, economical construction method for dams, offhighway pavement projects, heavyduty parking and storage areas, and as a base for conventional pavement. 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.
Rollercompacted concrete pavement employs a concrete paving technology that involves laydown and compaction of a zeroslump concrete mixture using equipment similar to that used in placement and compaction of asphaltic concrete pavement. Pages in category roller compacted concrete dams the following 111 pages are in this category, out of 111 total. 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. 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. Concrete face rockfill dam compared to roller compacted. Pdf rapid and economical construction are among numerous advantages of the construction of roller compacted concrete rcc dam compared to. Rollercompacted concrete has several advantages and disadvantages when compared to traditional dam construction. 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.
Investigating the possibility of constructing low cost. Rollercompacted concrete pavements as exposed wearing surface version 1. Construction of roller compacted concrete dams in hot arid. 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 term roller compacted concrete rcc is used to describe a concrete employed in the construction of dams, which combines the economical and rapid placement techniques used for fill dams with the strength and durability of concrete. The rcc pavement council is a volunteer industry trade association representing the interest of those involved with the construction of roller compacted concrete pavements. Has 37 rcc dams with the highest being olivenhain dam in san. Fly ash is important material for rcc dam, and usually replaced from 20 to 30 % for cement. High dams up to 200 m in height and containing several million m. Special specification 3258 roller compacted concrete. In addition to reservoir siltation assessment, operation spillways have been the major constraint on the reliability of these types of dams. Rcc is placed with earthmoving equipment, and the longterm strength of rcc is similar to concrete. Rollercompacted concrete for dam safety modifications. To study the influence of construction interfaces on dynamic characteristics of roller compacted concrete dams rccds, mechanical properties of construction interfaces are firstly analyzed.
Rcc became popular due to the fact that it is a simple material to produce and place. Pdf construction of roller compacted concrete dam in. Roller compacted concrete rcc has been rapidly developing over the past 40 years and is now commonly used for mass concreting operations typically in a gravity dam application. Rcc consists of a zero slump mix of sand, gravel, cement, and water.
Then, the viscousspring artificial boundary vsab is adopted to simulate the radiation damping of their infinite foundations, and based on the marc software, a simplified seismic motion. Design strength of rcc dam is often based on long term strength 90 days, 120 days or even 1 year. Proceedings of the iv international symposium on roller compacted concrete dams. Importance of using roller compacted concrete in techno. Mix design of roller compacted concrete the constructor. Rcc is a less than zeroslump concrete mixture that is placed and compacted with the same equipment used for asphalt paving. Rcc or roller compacted concrete was limited to the subbase of roads and airfield pavements and concrete dams, being called lean concrete or dry lean concrete. Pdf the paper presents the comprehensive general information regarding the use of roller compacted concrete rcc in dam construction. 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. 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. Roller compacted concrete construction process in dam in.
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. Completed in 2010, the yeywa dam is located on the myitnge river in central myanmar. 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. Crete rcc dams in the earthquake zone should be taken. Principles and practices water resources introduction one of the most common measurements used for quality control of earthfill placement is compacted density. The tech brief discusses rcc pavement uses and provides information on rcc mixtures and construction of rcc pavements. The rcc pavement council supports research and promotion to improve the quality of rcc pavements and expand their use in a responsible and sustainable manner. Rollercompacted concrete dams rehabilitation in terms of. The hydration of cement and the climatic changes on the convective boundaries are the two main heat sources for the temperature rise in the roller compacted concrete dams.
Special specification 3258 roller compacted concrete 1. This tech brief presents an overview of the best practices for rollercompacted concrete pavement. 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. 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. 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. The paper also discusses the various mix proportioning, quality control, constructional features and instrumentation with respect to the high rcc dam such as middle vaitarana. With the fact that the construction of rcc dam dam is still. Roller compacted concrete for dams free download as word doc. Producing rollercompacted concrete from a ready mix. Rcc ingredients are the same as the conventional concrete but it has different ratios in the materials that are mixedto produce the concrete.
Rollercompacted concrete dams describes the development of rcc dams, the. The objective of this paper is to use the roller compacted concrete rcc for small dams design for the benefit it. The use of density testing for the control of fill placement and as a key indicator that material placed will meet specified parameters. Roller compacted concrete dam rcd fly ash cementitious material. The compaction depends on many variables, including the. The book considers planning and design, materials and. Future trends in roller compacted concrete dam construction. 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 technol. 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. Technical brief on rollercompacted concrete pavement. This paper will discuss the advantages of roller compacted concrete rcc for use in mass concrete gravity dams as compared to other types of. Proceedings of the iv international symposium on roller compacted concrete dams, madrid, spain, 1719 november 2003 berga, luis on.