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. Developed initially in japan in 1980s to offset the growing shortage of skilled labour. Aug 06, 20 cemflow is a range of highly specialised self compacting readymixed concrete formulations, each presenting significant advantages over equivalent traditional concrete. Is 4562000 code of practice for plain and reinforced concrete 3rd 6. By the early 1990s, japan has developed and used scc. Project report study on self compacting concrete using. Experimental study on selfcompacting concrete using flyash and metakaolin under the guidance of by asst. First, the features of japanese and chinese methods are discussed, in which the packing of sand and gravel plays a major role. Selfcompacting concrete procedure for mix design from. Selfcompacting concrete scc is widely recognized as a fundamental revolution in concrete technology. Self compacting concrete is a recent development that shows potential for future applications. The paper presents an experimental procedure for the design of self compacting concrete mixes.
This standard covers the test method for slump flow of self compacting concrete with a maximum coarse aggregate size of 40 mm or less. Selection of the type of cement will depend on the overall requirements for the concrete, such as strength, durability etc. Self compacting concrete seminar report, ppt, pdf for civil. Final report evaluation of selfconsolidating concrete celik. Self consolidating concrete scc is recognized as one of the greatest advances in the concrete industry. Hence to overcome these defects the self compacting concrete is used. 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. It is the ability of scc to flow into all spaces within the formwork under its own weight. Further, compressive strength at the ages of 7, 28, and 90 days was also determined and results are included here. Self compacting concrete ppt free download as powerpoint presentation.
Therefore, large volumes of fly ash, partially in substitution of cement and partially as filler, can be employed in producing self compacting concrete. The test results for acceptance characteristics of self compacting concrete such as slump flow. The concrete was cast along the entire lengths of the walls to avoid construction joints. It uses super plasticisers and stabilizers to significantly increase the ease and rate of flow. Self compacting concrete scc should present compatible quality and cost with conventional concrete cc. Can be produced in structural and excavatable by hand or machine forms, making it ideal for use around utilities. In beginning of1983, the problem of the durability of concrete structures was a major problem in japan. Selfcompacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration. However working on the parameters which affect the basic properties of self compacting concrete such as plastic viscosity, deformability, flowability and resistance to segregation, self compacting concrete may be proportioned.
The work presented in this paper seeks to build on the existing knowledge in this area by. For further information or assistance, please find contact details on linkedin. This research investigated self compacting concrete scc with levels of up to 80% cement replacement by fly ash in mixes adjusted to give constant fresh concrete properties. Self compacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing. Selfcompacting high performance international, vol. Ppt self compacting concrete powerpoint presentation free to.
Scribd is the worlds largest social reading and publishing site. Self compacting concrete scc, also known asself consolidating concrete, is. Self compacted concrete is highly engineered concrete with much higher fluidity without segregation and is capable of filling every corner of formwork under its self weight. A simple tool for self compacting concrete mix design. Self compacting concrete ppt civil engineering seminars. Development of scc self compacting concrete scc developed by professor hajime. It is highly flowable, nonsegregating concrete that can spread into place, fill formwork and encapsulate the reinforcement without any mechanical consolidation. Ppt self compacting concrete with metakaolin and flyash. Based on current research and available knowledge about scc presented in this paper, the following trends are emerging. P,india is used as additives according to astm c 618 5.
Here, the grading and packing of all solids in the concrete mix serves as a basis for the development of new concrete mixes. However, to date limited research exists exploring the use of coarse rca in scc. Properties of selfcompacting concrete with recycled coarse. Concrete is a mixture of cement, sand, gravel and water which dries hard and strong and is used as a material for building. Topflow the ultimate freeflowing, selfcompacting concrete. Although scc is advantageous its processability in hot climate regions is not well understood and is the main topic of this investigation. The materials shall be suitable for the intended use in concrete and not contain harmful ingredients in such quantities that may be detrimental to the quality or the durability of the concrete, or cause corrosion of the reinforcement. Also, compactibility is affected by the characteristics of materials and the mix proportions. 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.
Selfconsolidating concrete or selfcompacting concrete commonly abbreviated to scc is a concrete mix which has a low yield stress, high deformability, good. Concrete has to be heavily vibrated for flow into very intricate forms or forms that have a lot of reinforcing bars. Scc is modern innovation does not require vibration for placement and compaction. For creation of durable concrete skilled workers are required. There was a decrease in skilled workers in japan, which thus lead to reduction in quality of construction. 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. The composition in addition to cement and water, consists of high amount of super plasticizer, high powder content and a viscosity modifying agent. Ability to flow or deform under its own weight with or without obstructions and the ability to remain homogeneous while doing so. Methods of testing self compacting concrete workability. Feb 03, 2014 a brief introduction to use of geopolymer zero cement concrete with practical on site applications. One such latest generation concrete is self compacting concrete scc. 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 mechanical consolidation. Selfcompacting concrete is a fluid mixt ure suitable for placing in structures.
Materials for selfcompacting concrete the constructor. Self compacting concrete composite material concrete. This paper addresses experiments and theories on selfcompacting concrete. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Flowable fill is a self leveling, self compacting backfill material. It meets the demands placed by the requirements of speed and quality in concrete construction. Whatever the challenge, all must be completed on time and onbudget.
Using new admixtures and some mix modifications, we can now produce concrete that flows easily without segregating where the coarse aggregate separates from the cement paste. This recommendation specifies the performance required of self compacting concrete, primarily the self compactability, and provide verification and inspection methods. As per is4562000 6, cement is replaced by weight of material. Pdf selfcompacting concrete procedure for mix design. Selfcompacting concrete scc as the name implies that the concrete requiring a very little or no vibration to fill the form homogeneously. Ppt self compacting concrete powerpoint presentation.
A simple mix design method for selfcompacting concrete, cement and concrete research 2001. Self compacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. Most revolutionary development in concrete construction for several decades. The utilisation of recycled concrete aggregate rca in self compacting concrete scc has the potential to reduce both the environmental impact and financial cost associated with this increasingly popular concrete type. The constituent materials, used for the production of selfcompacting concrete scc shall generally comply with the requirements of en 206. The seminar report on self compacting concrete which explains the mix design, advantages and disadvantages, applications, properties,process of making self consolidating concrete, theoretical and experimental studies with test results. Self compacting fiber reinforced concrete powerpoint presentation download free. As of the year 2000, scc used for prefabricated products precast members and ready mixed concrete castinsitu in. Highly fluid, topflow is the ultimate self compacting concrete. One of the most remarkable projects built using self compacting concrete is the akashi kaikyo suspension bridge, japan in this project the scc was mixed onsite and pumped through a piping system to the specified point, located 200 meters away. Scc stands for self compacting concrete or self consolidating concrete. In the mix design of scc, the relative proportions of key. It achieves compaction into every part of the mould or formwork simply by means of its own weight without any segregation of the coarse aggregate.
Further development of latest generation concretes in the recent past needs to update knowledge on the behaviour of such concrete with the addition of fibres to make them more efficient and effective. Thus scc eliminates the vibration for the compaction of concrete without affecting its engineering properties. Self compacting concrete is a fluid mixt ure suitable for placing in structures. Download the latest pdf and ppt on slideshare for civil projects. Self compacting concrete seminar report, ppt, pdf for.
A proper design of a self compacting concrete requires considerably more fines content as compared to the traditional concrete. Applications self compacting concrete has been used in bridges and even on precast sections. Self compacting concrete ppt concrete cement scribd. Self compacting fiber reinforced concrete powerpoint. Selfcompacting geopolymer concrete video presentation youtube. A free powerpoint ppt presentation displayed as a flash slide show on. Hello sujay, i am unable to download the ppt you have shared. Self compacting concrete basic principles of scc and properties of hardened concrete requirements and mode of action of scc mix design and mixing of. Self consolidating concrete overview of scc the concrete. Flowing consistency, high performance, uniform quality.
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