Rollercompacted concrete has several advantages and disadvantages when compared to traditional dam construction. It is inert and nonreactive, not corrosive, and nonhazardous. Rollercompacted concrete rcc is an ultratough, zeroslump concrete with compressive strengths greater than 4,000 psi. C1176c1176m practice for making rollercompacted concrete in cylinder molds using a vibrating table. This report covers the present state of the art for rollercompacted concrete pavements. Rcc is a mixture of aggregate, cementitious materials, and water, with or without admixtures, similar to conventional hcc. It is transported, placed, and compacted using earth and rockfill construction equipment. Roller compacted concrete rcc was originally limited to the subbase of roads and airfield pavements, being called lean concrete or dry lean concrete.
This will be the first project of this kind in mssouri and may pave the way to greater use of this sustainable and costeffective material in the future. Rollercompacted concrete rcc is a noslump concrete that is compacted by vibratory rollers. Roller compacted concrete background to the development. Investigation of roller compacted concrete for use in. Properties of hardened rcc can be similar to those of conventionally placed concrete. The tech brief discusses rcc pavement uses and provides information on rcc mixtures and construction of rcc pavements. Properties of hardened rcc are similar to those of. 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 rcc is a noslump concrete placed with asphalt type paver and compacted by vibratory rollers. Roller compacted concrete for rapid pavement construction. A number of mixture proportioning methods have been successfully used throughout the world for roller compacted concrete structures.
The study involved the development of a stepwise mixture design methodology to select aggregate proportioning and particlesize. Roller compacted concrete was first used in the 1930s and 1940s for construction of dams, while the first application in the field of roads was recorded in the 1970s. Rcc pavements do not require joints, dowels, reinforcing steel, formwork, or finishing, and are virtually maintenancefree. Zero slump consistency of dense, damp gravel no forms or finishing no reinforcing steel high production placed with asphalt type pavers consolidated with vibratory. Part 645 construction inspection national engineering. It is placed with asphalt pavers to form a nonreinforced, concrete pavement.
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. One method is building the dams withroller compacted concrete rcc,which is a concrete that is compacted by vibrating roller equipment. Rcc mixture has low elastic modulus, because the heat of hydration generated is. This page provides typical material properties of rollercompacted concrete rcc as reported by the national concrete pavement technology centers guide for rollercompacted concrete pavements. Rollercompacted concrete pavements as exposed wearing surface version 1. Rollercompacted concrete, or rcc, takes its name from the construction method used to build it. Construction techniques for rollercompacted concrete. Manual methods tables and figures are shown for each of the following rcc. Rollercompacted concrete rcc material properties acpa.
Rcc has the strength and performance of conventional concrete with the economy and simplicity of asphalt. The first performance of rcc has been used in 1974 and it was about a repair project of intake tunnel which was collapsed is the tarbela dam. The concrete mixture used for construction should keep in an unhardened state to support the roller compaction. It includes detailed overviews of rcc properties and materials, mix. Pdf strength properties of roller compacted concrete containing. Principles and practices water resources introduction one of the most common measurements used for quality control of earthfill placement is compacted density. Pdf rollercompacted concrete rcc and its application in. For technical assistance regarding rollercompacted concrete, contact the. Rccp is a kind of rigid pavement which needs low water and low cement. Okamoto an investigation was conducted to develop a procedure for the design of roller compacted concrete rcc pavements.
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. Design and construction considerations for hydraulic. Its placed with conventional or highdensity asphalt paving equipment,then compacted with rollers. Roller compacted concrete rcc is an ordinary concrete poured and compacted with machines typically used. The compaction characteristics of extremely dry concrete are evaluated using a new method based on a variable vibration table. Roller compacted concrete mix design and properties of rcc. The term roller compaction is defined by the aci as a process for compacting concrete using a roller, often a vibrating roller. Properties, materials and durability of rolled compacted. This method allows the study of the effect of vibration frequency, vibration time and acceleration on the properties of concrete. Roller compacted concrete roller compacted concrete rcc is a noslump concrete placed with asphalt type paver and compacted by vibratory rollers.
Today, rcc is used for any type of industrial or heavyduty pavement. Rollercompacted concrete rcc shall consist of aggregate, portland cement, possibly other supplementary cementing materials fly ash, slag and silica fume and water. This paper is a report on the laboratory portion of the investigation that was conducted to determine the engineering properties of rcc. Guide specification for construction of rollercompacted concrete pavements 1. Standard practice for molding rollercompacted concrete in. The american concrete institute aci 116r1 defines rcc as concrete compacted by roller compaction. Rollercompacted concrete rcc portland cement association.
The resulting product is a construction material with the strength character is tic of conventional concrete. However, the most common mixture proportioning methods are variations of the following two general approaches. 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, or rcc, takes its name from the construction method used to build it. Roller compacted concrete rcc is a mass concrete with zero slump consisting of wellgraded aggregate, cement and water. Design and construction considerations for hydraulic structures rollercompacted concrete second edition u. This type of concrete has become very popular due to the fact that it is a simple material to produce and because it can be placed fast while producing a great surface. This proportioning method involves establishing a relationship between the density and moisture content of an roller compacted concrete mixture to obtain the maximum density by compacting samples over a range of moisture contents.
Special specification 3258 roller compacted concrete 1. Rollercompacted concrete rcc is a form of hydraulic cement concrete hcc with properties similar to those of conventional concrete, but it is constructed in a different way. In view of the fact that many of the observations made and the hypotheses presented relate to the nature of rcc as a material and the methods applied for construction, it is considered appropriate to provide the reader with some background on rcc in these areas. Engineering properties of rollercompacted concrete shiraz 0. Nov 25, 2019 roller compacted concrete rcc was originally limited to the subbase of roads and airfield pavements, being called lean concrete or dry lean concrete. Can roller compacted concrete mixes be produced through a standard ready mix concrete plant. Experimental verification of properties of roller compacted concrete for pavements. Properties of rcc mixes the procedures for batching rcc mixes differ from those used for batching conventional concrete, due primarily to the stiff consistency of rcc and its use of denselygraded aggregate blends. Special specification 3258 roller compacted concrete. It contains information on applications, material properties, mix proportioning, design, construction, and quality control procedures.
Investigation into the suitability of roller compacted concrete as pavement material in ghana page 3 abstract this project will investigate the suitability of roller compacted concrete rcc for low volume road construction in ghana and especially for the construction. Use of chemical admixtures in rollercompacted concrete. Roller compacted concrete rcc is a relatively stiff or zero. Zero slump consistency of dense, damp gravel no forms or finishing no reinforcing steel high production placed with asphalt type pavers consolidated with vibratory rollers concrete placed in a. Roller compacted concrete rcc is a new material that uses a construction technique that applies the material property theories of both soil mechanics and concrete.
Rcc has many advantages over other pavement types, particularly cost and speed of construction. Roller compacted concrete is defined as the concrete which is compacted by roller compaction technique. Experimental verification of properties of rollercompacted concrete for pavements. Design and construction considerations for hydraulic structures in addition, appendices are included that contain guide specifications for rcc construction appendix a, a summary of rcc costs appendix b, and samples of adiabatic temperature rise tests of rcc appendix c.
Properties, materials and durability of rolled compacted concrete for. The soil compaction method consists of the following steps. A simplified explanation of this is that drying shrinkage produces the large natural crack spacings williams, 1986. It also has provided design engineers with an opportunity to economically rehabilitate existing concrete dams. Roller compacted concrete nominated mix design if the supplier can establish the properties from another trial mix independent of this work and can demonstrate that the roller compacted concrete has been produced in a homogenous manner and meets.
Rcc successfully and economically combines strength and durability with ease of construction. Roller compacted concrete mix proportioning method i of making roller compacted concrete. Engineering properties of roller compacted concrete shiraz 0. Roller compacted concrete, aci professional roller compacted. Strength properties of roller compacted concrete containing ggbs as partial replacement of cement. Rollercompacted concrete rcc is a new material that uses a construction technique that applies the material property theories of both soil mechanics and concrete. Rollercompacted concrete rcc is a special mixture of controlled, densegraded aggregates, portland cement and possibly pozzolans fly ash, mixed with just enough quantity of water so that it could selfstand when paved using either a slipform paver without needle vibrators or asphalt paver. Roller compacted concrete for high volume roads aecom 9 2. Request pdf mechanical properties and durability of roller compacted concrete pavements in cold regions roller compacted concrete pavement is a cost effective and beneficial pavement system. Roller compacted concrete background to the development of. Roller compacted concrete pavement rccp gradually has been considered as an attractive alternative to conventional road construction due to it is relatively easier to produce and more economical. Rollercompacted concrete, which emerged as a viable means of constructing dams in the 1980s, allows much faster and less expensive construction than traditional methods. C1176c1176m practice for making roller compacted concrete in cylinder molds using a vibrating table.
Concrete is weak in tension almost one tenth of its segregation, dowel bars. Rollercompacted concrete rcc is an ordinary concrete poured and compacted. Pdf roller compacted concrete is a friendly pavement material to incorporate byproducts of industries. Roller compacted concrete rcc is a concrete of zeroslump consistency in its unhardened state used in pavement and dams. Like the normal concrete, the ratio depends on aggregate type, cement content, age etc.
Rcc became popular due to the fact that it is a simple material to produce and place. Design and construction considerations for hydraulic structures. The rcc pavement council is a volunteer industry trade association representing the interest of those involved with the construction of roller compacted concrete pavements. Investigation into the suitability of roller compacted. The study will evaluate the fresh and hardened properties, durability, and insitu performance of roller compacted concrete rcc for pavement applications. Aci web sessions up until 15 years ago, all roller compacted concrete pavement material was produced using a standard pub mill. Mar 21, 2018 the development of roller compacted concrete rcc was a major change in the construction practices of dams and other structures. An investigation was conducted to develop a procedure for the design of rollercompacted concrete rcc pavements. Drying shrinkage is higher for higher water content mixes such are typical for concrete, while rcc is designed with a relatively low water demand to suit roller compaction. This tech brief presents an overview of the best practices for roller compacted concrete pavement.
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. Pdf experimental verification of properties of roller. General roller compacted concrete rcc is probably the most important development in concrete dam technology in the past quarter century. Aceit plus is a proprietary admixture designed specifically for roller compacted concrete and cement treated bases that supplied in dry powder form. Rcc has three key properties that make it uniquely suited for dams. Regardless of the projects size or importance, field quality control is necessary. Department of the interior bureau of reclamation technical service center denver, colorado september 201. Rollercompacted concrete has the same basic ingredient as conventional concrete. Aggregate gradation is one of the most important property that influence the behaviour of roller compacted concrete pavement rccp. Roller compacted concrete rcc is concrete that has no slump, no forms, no reinforcing steel, no finishing, and is wet enough to support compaction by vibratory rollers. Rollercompacted concrete rcc material properties acpa wiki. The main objective of this research was to develop highperformance roller compacted concrete rcc with enhanced solid skeleton to secure greater workability, mechanical properties, and frost durability. This tech brief presents an overview of the best practices for rollercompacted concrete pavement.
Roller compacted concrete pavement rcc pavement council. Okamoto an investigation was conducted to develop a procedure for the design of rollercompacted concrete rcc pavements. 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 appearance is very similar to the opengraded look of asphalt, only it has a much lighter color that reduces the urban heat effect and decreases lighting needs by 30%. Technical brief on rollercompacted concrete pavement. Guide specification for construction of rollercompacted. The use of density testing for the control of fill placement and as a key indicator that material placed will meet specified parameters. It is defined as concrete compacted by roller, as per aci 207. Pdf evaluation of properties of roller compacted concrete. Figure 1 shows an unsurfaced rcc used as a heavy duty pavement at composting. Roller compacted 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. Roller compacted concrete properties, advantages, and. Pdf mechanical properties of roller compacted concrete with. This page provides typical material properties of roller compacted concrete rcc as reported by the national concrete pavement technology centers guide for roller compacted concrete pavements.
The material prepared as a dry concrete is transported by dump trucks to the manufacturing laid in layers by grader or similar. Use of chemical admixtures in rollercompacted concrete for. The effect of using low fines content sand on the fresh and. If youre looking for a lowcost, highvolume, extremely durable material for your industrial pavement project, contact us today. The use of rcc has allowed many new dams to become economically feasible due to the reduced cost realized from the rapid construction method. There are some limitations for gradation of coarse and fine aggregates from the standards. The american concrete institute aci has established aggregate gradation limits that produce quality rcc pavement mixtures. Roller compacted concrete rcc is a special mixture of controlled, densegraded aggregates, portland cement and possibly pozzolans fly ash, mixed with just enough quantity of water so that it could selfstand when paved using either a slipform paver without needle vibrators or. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Rcc ingredients are the same as the conventional concrete but it has different ratios in the materials that are mixedto produce the concrete. Earthquake aspects of roller compacted concrete and. Rollercompacted concrete rcc consists of an engineered mixture of dense graded aggregates. Mechanical properties and durability of roller compacted. Roller compacted concrete has the same basic ingredient as conventional concrete.