Cip 37 self consolidating concrete scc self consolidating concrete scc, also known as self compacting concrete, is a highly flowable, nonsegregating concrete that can spread into place, fill the formwork and encapsulate the reinforcement without any. We hereby declare that the 8th semester project report for the project entitled study on self. Pdf selfcompacting concrete procedure for mix design. The selfcompacting concrete flows easily at suitable speed into formwork without blocking through the reinforcement without being heavily vibrated. Selfcompacting geopolymer concrete, fly ash, silica fume, ground granulated blast furnace slag. Based on above results conclusions are drawn and discussions the following self compacting concrete scc technology can save time, cost, enhance quality, durability and moreover it is a green concept. Self compacting concrete is basically a concrete which is capable of flowing in to the formwork, without segregation, to fill uniformly and completely every corner of it by its own weight without any application of vibration or other energy during placing. However working on the parameters which affect the basic properties of selfcompacting concrete such as plastic viscosity, deformability, flowability and resistance to segregation, selfcompacting concrete may be proportioned.
A proper design of a selfcompacting concrete requires considerably more fines content as compared to the traditional concrete. The volume of the conplast used in selfcompacting concrete is taken as 1% of the volume of the cement. In the situation where, in the project, are not mentioned the selfcompacting concrete s characteristics, the consistency classes must be selected carefully, on the basis of the site conditions, by all factors involved in designer, builder, concrete station. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Self compacting concrete scc, also known asself consolidating concrete, is. The only book to offer a systematic and comprehensive source of information on scc technology from its inception to latest developments during the last decade, concrete technology has made an enormous advance through the introduction of selfcompacting concrete. A concrete mix can only be classified as self compacting concrete if the requirements for all the following three workability properties are fulfilled. Since the concrete is capable of selfconsolidating and reaching the difficult areas in moulds, manual variables in terms of placing and. Development of scc self compacting concrete scc developed by professor hajime.
Selfhealing of concrete a new technology for a more. Therefore, it is essential to have proper mix design. Selfcompacting concrete is a fluid mixt ure suitable for placing in structures. Concrete in p what,whyahowp cip 37 self consolidating concrete what is self consolidating concrete. Selfconsolidating concrete agilia is a range of self consolidating concretes. At the same time it is cohesive enough to fill spaces of almost any size and shape without segregation or bleeding. Selfcompacting concrete scc for prestressed bridge girders 7. Best practices guidelines for selfconsolidating concrete. These documents are not to be submitted with any patent office. In the situation where, in the project, are not mentioned the selfcompacting concretes characteristics, the consistency classes must be selected carefully, on the basis of the site conditions, by all factors involved in designer, builder, concrete station.
It meets the demands placed by the requirements of speed and quality in concrete construction. Therefore, large volumes of fly ash, partially in substitution of cement and partially as filler, can be employed in producing selfcompacting concrete. Introduction selfcompacting concrete scc is a new category of high performance concrete characterized by its ability to spread into a heavily reinforced area under its own weight without the need of vibration and. Project report study on self compacting concrete using. It uses superplasticisers and stabilisers to significantly increase the ease and rate of flow.
Water is one of the most important element in construction. A selfcompacting concrete scc is the one that can be placed in the form. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2. Properties of highstrength selfcompacting concrete hsscc.
Self compacting concrete and steel fiber self compacting concrete, studies on residual compressive strength is of paramount importance for instilling confidence amongst the engineers and builders. Selfcompacting concrete is a complex system that is usually proportioned with one or more additions and one or more chemical admixtures. Selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. Conventional concrete tends to present a problem with regard to adequate consolidation in thin sections or areas of congested reinforcement, which leads to a large volume of entrapped air voids and compromises the strength and durability of the concrete. It does not require mechanical compaction and thus saves time, labour, equipment requirements and formwork damage. Selfcompacting concrete scc center for transportation studies. Selfcompacting concrete scc for prestressed bridge girders. There fore each selfcompacting concrete has to be designed for the particular structure to be constructed. The benefits of scc in reduced labor needs, increased rate of production and safety, and lower noise levels have generated great interest from the precast concrete industry. Selfcompacting concrete not only increases the reliability of structures but also reduces the number of workers required at the construction site and streamlines the construction. This application of nanotechnology in construction provides benefits from the perspective of materials technology and.
Pdf self compacting concrete an inovative concrete researchgate. Self compacting concrete composite material concrete. There is evidence in the academic literature of these biomimetic design approaches being used in the development of selfhealing systems for polymer composites. Department of civil engineering university of minnesota. In precast product plants as well, selfcompacting concrete is highly effective in reducing the noise as it requires no vibration.
Hence to overcome these defects the selfcompacting concrete is used. The selfcompacting concrete differs from conventional concrete in the following three characteristic features, namely, appropriate flowability, nonsegregation, and no blocking. The project deals with studying the fresh and hardened properties of self compacting concrete scc, using two types of fine materials silica fume. The literature indicates that while some studies are available on the normal concrete, a comprehensive study which involves strength that is not. It is the ability of scc to flow into all spaces within the formwork under its own weight. It achieves compaction into every part of the mould or formwork simply by means of its own weight. For creation of durable concrete skilled workers are required. Selfcompacting concrete by s and corneliu bobliana iure abstract. An increase in the flowability of concrete is known to increase the risk of segregation. M sonebi, medium strength selfcompacting concrete containing fly ash. There was a decrease in skilled workers in japan, which thus lead to reduction in quality of construction.
Selection of the type of cement will depend on the overall requirements for the concrete, such as strength, durability etc. Selfconsolidating concrete or selfcompacting concrete commonly abbreviated to scc is a concrete mix which has a low yield stress, high deformability, good segregation resistance prevents separation of particles in the mix, and moderate viscosity necessary to ensure uniform suspension of solid particles during transportation, placement without external compaction, and thereafter until. Due to the highly fluid nature of agilia, these concretes do not require vibration and provide a beautiful final surface finish, helping to contribute to reduced construction time and costs on your project. Selfcompacting concrete scc is a type of concrete, which flows under the sole.
Mix design procedure for self compacting concrete 1krishna murthy. All types of cement conforming to en 197 are suitable. Selfhealing materials are widely encountered in natural systems, and inspiration can be drawn from these systems for design. Classes of self compacting concrete delivered by holcim romania. Pdf selfcompacting concrete scc it is considered to be one of the. Selfcompacting properties include a good flowability in the fresh state, and a good cohesiveness against segregation. The paper presents the characteristics of the selfcompacting concretes, their advantages and disadvantages when they are used in buildings. The european guidelines for self compacting concrete 1 introduction selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. Methods of testing self compacting concrete workability.
Also explore the seminar topics paper on self compacting concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. It can also be high strength to improve its durability compared to the normal concrete 1. Materials for selfcompacting concrete the constructor. Lbox test experimental procedure the procedure adopted in the study is as follows 1 using japanese method of mix design, initial mix design was carried out at coarse. Self compacting concrete seminar report, ppt, pdf for. Pdf selfcompacting concrete is a fluid mixture suitable for placing in structures. It is required for preparation of mortar, mixing of cement concrete and curing work etc. Selfcompacting concrete, segregation, mix design, mechanical properties, durability, drilled shafts. Agilia concrete will flow freely around congested reinforcement without the need for vibration or other energy input. Modelling using factorial experimental plans, cement and concrete research, vol 34, pp 11991208, 2004. This makes scc particularly useful wherever placing is difficult, such as in heavily reinforced concrete. Based on current research and available knowledge about scc presented in this paper, the following trends are emerging.
Due to its properties and composition, the selfcompacting concrete is described here as being one of the future. In beginning of1983, the problem of the durability of concrete structures was a major problem in japan. Selfcompacting concrete is a recent development that shows potential for future applications. A selection of some 24 projects which are of particular significance, are documented in detail and provide a wealth of inspiring design ideas. Its selflevelling, selfcompacting properties allow it to be placed fully compacted without segregation and with no vibration. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format. Notably was one of the largest infrastructure projects that used scc. Firth self compacting concrete scc is a concrete that flows into place under its own weight. Selfcompacting concrete is a flowing concrete mixture that is able to consolidate under its own weight. Civil, degree of shivaji university, kolhapur bymr. Selfcompacting concrete civil engineering community. In an ever more demanding and extremely competitive environment, with tight deadlines and even tighter margins, speed and efficiency which save time are critical. Kondrath, eileen sheehy, tony chmiel retired, fred lovet, jose.
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