It consists of cement, coarse and fine aggregates, water, mineral and chemical admixtures. Apr 18, 2015 shear walls are vertical elements of the horizontal force resisting system. An experimental study on self compacting concrete hemanvitha bobba,u. It uses super plasticisers and stabilizers to significantly increase the. Self compacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. Self compacting concrete report concrete stress mechanics. This paper addresses experiments and theories on selfcompacting concrete. Selfcompacting concrete scc also referred to, as selfconsolidating. Self compacting concrete scc for prestressed bridge girders 7. The ingredients for self compacting concrete are similar to conventional concrete. View self compacting concrete research papers on academia. Investigations for establishing a rational mix design method and self compactability testing methods have been carried out from the. Morag gambles method for simple abundance our permaculture life duration. During the last decade, concrete technology has made an enormous advance through the introduction of selfcompacting concrete.
Pdf the development of selfcompacting concrete in the uk and. The present project investigates the making of selfcompacting concrete more affordable for the construction market by replacing high volumes of portland cement by fly ash. Performance and acceptance of selfconsolidating concrete. Development of scc self compacting concrete scc developed by professor hajime. Design and application of self compacting concrete concrete. Firth scc has also been proven to have superior bond to top bar reinforcing compared to normal concrete. Selfcompacting concrete scc, or selfconsolidating concrete in usa, is a segregationfree concrete although it is so fluid that it can completely fill any area of the formwork in the absence of any compaction effort.
Optimum mix parameters of highstrength selfcompacting concrete. There are, however, some differences between the hvfa self compacting concrete and the hvfa concrete designed by canmet. Selfconsolidating concreteconsolidating concrete for. Self compacting concrete report free download as word doc. It does not require mechanical compaction and thus saves time, labour, equipment requirements and formwork damage. The work presented in this paper seeks to build on the existing knowledge in this area by. Selfcompacting concrete is a highly flowable, stable concrete which flows readily into places around congested reinforcement, filling formwork without any consolidation and significant segregation. Properties of self compacting concrete with different types of additives 175 lbox test is used to assess the passing ability of scc to flow through tight openings including spaces between reinforcing bars and other obstructions without segregation or blocking. Scc is modern innovation does not require vibration for placement and compaction. Mix compositions for flowing concrete and self compacting concrete. Introduction self consolidating concreteorself compacting concrete scc is characterized by a low yield stress, high deformability, and moderateviscositynecessary to ensure uniform suspension of solid particles during transportation, placement without external compaction. High performance concrete 12 s1 1998 119122 in chinese.
The range of benefits offered go beyond fundamental aspects of concrete quality and productivity. Roadstone self compacting concrete scc is a highly fluid and flowable non segregating concrete that requires no mechanical vibration. Mohammed, mahmoud khashaa 2015 multiscale response of. Self compacting concrete scc, or self consolidating concrete in usa, is a segregationfree concrete although it is so fluid that it can completely fill any area of the formwork in the absence of any compaction effort. All types of cement conforming to en 197 are suitable. The concretes consistency is modified by using special additives. Here, the grading and packing of all solids in the concrete mix serves as a basis for the development of new concrete mixes. Selfcompacting concrete scc should present compatible quality and cost with conventional concrete cc. 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. 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. View selfcompacting concrete research papers on academia. Self compacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2.
Concrete self compacting concrete certified concrete firth. This slide includes some test conducted in self compacting concrete and basic definitions. Self compacting concrete scc, also known asself consolidating concrete, is. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. In 1988, selfcompacting concrete scc a highfl uidity concrete that maintains its stability was developed in japan. A practical mix design method for selfcompacting concrete. Selfcompacting concrete scc is a key innovation in concrete technology and it is truly remarkable that, even after almost 30 years since its first implementation, it still attracts the interest. Self compacting concrete seminar report, ppt, pdf for. The ingredients for selfcompacting concrete are similar to conventional concrete. Selection of the type of cement will depend on the overall requirements for the concrete, such as strength, durability etc. 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. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format. Abstract self compacting concrete is a flowable concrete mixture with excellent strength and durability properties.
Since then, various investigations have been carried out, and the concrete has been used in practical structures in japan, mainly by large construction companies. Firth self compacting concrete scc is a concrete that flows into place under its own weight. Introduction self compacting 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. Form filling ability of selfcompacting concrete thrane 2004. 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. Selfcompacting concrete is a recent development that shows potential for future applications.
Selfcompacting concrete scc it uses superplasticisers and stabilisers to significantly increase the ease and rate of flow. International rilemjci seminar on concrete durability and service life planning. Stephen lane senior research scientist introduction in response to the reduction in the skilled labor force in japans construction industry and the consequential reduction in the quality of construction, researchers at the university of tokyo. Department of civil engineering university of minnesota. The ultimate freeflowing, self compacting concrete. Hence to overcome these defects the self compacting concrete is used. Self compacting concrete scc is a key innovation in concrete technology and it is truly remarkable that, even after almost 30 years since its first implementation, it still attracts the interest. Self compacting concrete incorporating highvolumes of class. Selfconsolidating concrete scc is an important emerging material that can be used for many.
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. Ideal for difficult concrete pours or areas with a high density of reinforcing steel, the excellent flowing characteristics of scc make the most complex and challenging project easily achieved. However, even nowadays, there is still a lack of knowledge about scc, especially regarding the few practical mix design methods available. This application of nanotechnology in construction provides benefits from the perspective of materials technology and environmental protection and is presenting diverse opportunities to engineers and architects alike. Although scc is advantageous its processability in hot climate regions is not well understood and is the main topic of this investigation. Table 1 compares a firth scc mix developed for auckland to normal 50 mpa concrete. Self compacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing. Highly fluid, agilia is the ultimate self compacting concrete. The main characteristics of scc is the higher cement matrixaggregate ratio with respect to an ordinary concrete. Self compacting concrete seminar report, ppt, pdf for civil. Self consolidating concrete is an emerging class of concrete materials that offers great potential for improved ease of placement, increased rate of construction, and reduced cost through reduced time and labor.
Methods of testing self compacting concrete workability. 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. In residential construction, shear walls are straight external walls that typically form a box which provides all of the lateral support for the building. Mix compositions for flowingconcrete and selfcompacting concrete. This standard covers the test method for slump flow of selfcompacting concrete with a maximum coarse aggregate size of 40 mm or less. Pdf selfcompacting concrete scc can be defined as a fresh concrete which possesses. 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. Form filling with selfcompacting concrete dtu orbit.
Nchrp report 62pnchrp report 62p self consolidating concrete for precast bridge elementsself consolidating concrete for precast bridge elements proceedings of the fifth international rilem symposium on scc sept. First, the features of japanese and chinese methods are discussed, in which the packing of sand and gravel plays a major role. Usn has submitted the seminar report on self compacting concrete a. Shear walls are constructed to counter the effects of lateral load acting on a structure. Abstract self compacting concrete is a flowable concrete mixture with excellent strength and. Evaluation of selfconsolidating concrete celik ozyildirim, ph. 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. The utilisation of recycled concrete aggregate rca in selfcompacting concrete scc has the potential to reduce both the environmental impact and financial cost associated with this increasingly popular concrete type. Highly fluid, agilia is the ultimate selfcompacting concrete. We used similar compositions of scc and cc to study the fresh cement workability. Selfcompacting concrete scc for prestressed bridge girders 7. A concrete mix can only be classified as self compacting concrete if the requirements for all the following three workability properties are fulfilled. 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. Download the latest pdf and ppt on slideshare for civil projects.
The utilization of self compacting concrete scc sciencedirect. Concrete is a mixture of cement, sand, gravel and water which dries hard and strong and is used as a material for building. Shear walls are vertical elements of the horizontal force resisting system. Self compacting concrete was first developed 1988 in order to achieve durable concrete structures. 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. Self compacting concrete scc non segregating concrete. P,india is used as additives according to astm c 618 5. Project report study on self compacting concrete using. One such latest generation concrete is self compacting concrete scc.
The concrete was cast along the entire lengths of the walls to avoid construction joints. Most revolutionary development in concrete construction for several decades. However, to date limited research exists exploring the use of coarse rca in scc. Concrete has to be heavily vibrated for flow into very intricate forms or forms that have a lot of reinforcing bars. It can be poured quickly, flowing and spreading effortlessly. Self compacting concrete hardened properties testing of firth scc in new zealand has proven it to be equal or superior to normal concrete in hardened properties. Seminar on self compacting concrete scc special concrete. Final report evaluation of selfconsolidating concrete celik. The conditions of the self compacting concretes composition, according to the european guide for self compacting concrete efnarc, are the following. It uses super plasticisers and stabilizers to significantly increase the ease and rate of flow. Selfcompacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing. The center for advanced cement based materials white. Introduction selfconsolidating concreteorselfcompacting concrete scc is characterized by a low yield stress, high deformability, and moderateviscositynecessary to ensure uniform suspension of solid particles during transportation, placement without external.
By the early 1990s, japan has developed and used scc. This recommendation specifies the performance required of self compacting concrete, primarily the self compactability, and provide verification and inspection methods. 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. Consolidating concrete, proceedings of the 4th international seminar on self. An experimental study on self compacting concrete ijser. Evans from the cement and concrete institute, at the self compacting concrete seminar roadshow. This recommendation specifies the performance required of selfcompacting concrete, primarily the selfcompactability, and provide verification and inspection methods. Acbm organized a research team in the fall of 2004 to coordinate ongoing research activities toward three theme questions. Materials for selfcompacting concrete the constructor. Pdf selfcompacting concrete procedure for mix design. Properties of selfcompacting concrete with different types of additives 175 lbox test is used to assess the passing ability of scc to flow through tight openings including spaces between reinforcing bars and other obstructions without segregation or blocking. Based on current research and available knowledge about scc presented in this paper, the following trends are emerging. When shear walls are designed and constructed properly, and they will have.
As per is4562000 6, cement is replaced by weight of material. Highperformance superplasticiser glenium 51 was used the concrete mixes. Selfcompacting concrete procedure for mix design article pdf available in leonardo electronic journal of practices and technologies 712 june 2008 with 35,725 reads how we measure reads. Properties of selfcompacting concrete with recycled coarse. It is the ability of scc to flow into all spaces within the formwork under its own weight. Selfcompacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. The requirements from the european guidelines for self compacting concrete for fresh selfcompacting concrete shall be measured by means of the following tests for characteristic. Self compacting concrete incorporating highvolumes of. Selfcompacting concrete civil engineering community.
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