Roller compacted concrete dams pdf

Design considerations for rcc buttresses for concrete dam modifications chapter 8. Rcc successfully and economically combines strength and durability with ease of construction. Rcd dams are not considered to be a new type of dams i. 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. 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. This paper will discuss the advantages of roller compacted concrete rcc for use in mass concrete gravity dams as compared to other types of. It is transported, placed, and compacted using earth and rockfill construction equipment. Pdf construction of roller compacted concrete dams in. Bureau of reclamation reclamation has used rollercompacted concrete rcc. The development in roller compacted concrete rcc is replacing the conventionally vibrated concrete cvc for faster construction of dam during last threefour.

Since upper stillwater dam was designed and constructed in the 1980s, the. Rollercompacted concrete rcc is an ultratough, zeroslump concrete with compressive strengths greater than 4,000 psi. Facing systems for rollercompacted concrete dams and spillways. What is roller compacted concrete rcc concrete brief. Roller compacted concrete mix proportioning method i of making roller compacted concrete. Roller compacted concrete shares both properties of asphalt and concrete so it truly represents the best of both worlds delivering short and longterm value. Roller compacted concrete properties, advantages, and. Rollercompacted concrete rcc started in the us and canada near 30 years ago. Pdf rollercompacted concrete dams rehabilitation in terms of. Roller compacted concrete rcc has been widely preferred in the world recently due to its rapid production rate, low cost and good durability compared to those of the traditional concrete. Development of design mix roller compacted concrete dam at. Though design of rcc dam is similar to the conventional gravity dam, the. Gallapave rcc is part of gallagher aggregates gallapave range of hydraulically bound mixtures and roller compacted concrete. Design and construction considerations for hydraulic.

Rollercompacted concrete dams rehabilitation in terms of. It is placed with asphalt pavers to form a nonreinforced, concrete pavement. Elements discussed include investigation and selection of materials, mixture proportioning, material properties, design and. Rollercompacted concrete rcc is a concrete of zeroslump consistency in its unhardened state used in pavement and dams. It is transported, placed, and compacted using earth. With the fact that the construction of rcc dam dam is still. Roller compacted concrete mix design and properties of rcc. 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.

Rcc ingredients are the same as the conventional concrete but it has different ratios in the materials that are mixedto produce the concrete. Recently, roller compacted concrete rcc has come into use for various advantages over the conventional concrete. The worlds largest rollercompacted concrete dams 2015. One method is building the dams withroller compacted concrete rcc,which is a concrete that is compacted by vibrating roller equipment. Design and construction considerations for hydraulic structures rollercompacted concrete second edition. 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. Roller compacted concrete malaysia started adopting rcc technology to the gravity dam construction. Pdf the paper presents the comprehensive general information regarding the use of roller compacted concrete rcc in dam construction. Uses the principles of soil compaction to produce a lean rcc, where the optimum water content of the concrete is the one that produces the maximum dry density of the mixture. The term roller compaction is also defined by aci as a process for compacting.