One of the most remarkable projects built using selfcompacting concrete is the akashikaikyo suspension bridge. 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. Methodology the present research work is experimental and. Self compacting concrete is a highperformance concrete which is highly flowable or self leveling cohesive concrete that can be easily placed in the tight reinforcement. Selfcompacted concrete mix design and its comparison with conventional concrete m40 rakesh kumar d department of structural engineering, integral university, lucknow, u. Friends we use different concrete for different purposes. The self compacted concrete is widely used in pre or post tensioned sections.
Aug 21, 2018 friends we use different concrete for different purposes. This led to the development of self compacting concrete, primarily through the work by okamura 1. Specification and guidelines for selfcompacting concrete efnarc. It is the ability of scc to flow into all spaces within the formwork under its own weight. Self levelling concrete self compacting concrete cemex uk. This led to the development of selfcompacting concrete, primarily through the work by okamura 1. As per is4562000 6, cement is replaced by weight of material. Self compacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. The importance of selfcompacting concrete is that maintains all concretes durability and characteristics. P, india abstract the selfcompacted concrete is an innovative product in civil engineering field of. 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.
Self compacting concrete incorporating highvolumes of. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2. The tests show that selfcompacted concrete is weak in modulus of elasticity but with higher shrinkage ferrara, l. One reference high strength selfcompacted concrete mixture is used, with five percent by weight of cement silica fume and eight percent of the cement replaced by limestone powder. Investigations for establishing a rational mix design method and self compactability testing methods have been carried out from the. Nowadays, the production of scc is becoming more popular in all over the world due to its superior properties. Aug 06, 20 cemflow is a range of highly specialised self compacting readymixed concrete formulations, each presenting significant advantages over equivalent traditional concrete. Self compacting concrete for high performance structures. Thus scc eliminates the vibration for the compaction of. It is used to facilitate and ensure proper filling and.
The concrete community of various european countries intensely researches its application. The main purpose of the use of self compacting concrete is to get flow of concrete without segregation. Selfcompacting concrete journal of advanced concrete. Raijiwala, self compacting concrete a concrete of decade, journal of engineering research and studies, jersvol. Self consolidating concrete is designed to avoid this problem, and not require compaction, therefore reducing labor, time, and a possible source of technical and quality control issues. It is super workable due to its low watercement ratio, which gives rapid strength development, more durability, and best quality. Selfcompacting concrete has been used in bridges and even on precast sections.
Self compacted concrete seminar 1 concrete building. Self compacting concrete an overview sciencedirect topics. This standard covers the test method for slump flow of selfcompacting concrete with a maximum coarse aggregate size of 40 mm or less. As may be seen from fig2, its effect on compressive strength is dramatic. Selfcompacting concrete is a nonsegregating concrete that is placed by means of its own weight. Comparison of self compacted concrete with normal concrete by. Selfcompacting concrete, mineral additives, agricultural waste, structural properties, rheology.
Selfcompacting concrete is a fluid mixture suitable for. Roller compacted concrete rcc as a paved surface offers facility owners and pavement designers a concrete pavement alternative that may better meet the requirements of specific pavement projects than conventionally castinplace concrete pavements. Self compacting concrete was first developed in 1988 to achieve durable concrete structures. The worldwide interest in the development of self compacting concrete highlights the importance of this new type of concrete to modern day construction. The information in this document is expected to inform concrete producers, users, and specifiers of scc of known practices and processes.
Self compacting concrete has left his early stage of laboratory studies and has now become an industrial product. Pdf selfcompacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration. Self compacting concrete scc it uses superplasticisers and stabilisers to significantly increase the ease and rate of flow. Self compacting concrete scc, also known as self consolidating concrete, is one of the most widely used concrete types, mainly because of its self compacting characteristics and strength. Selfcompacting concrete scc selfcompacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. Jul 09, 2018 self compacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. One of the key differences between the selfcompacting concrete scc and normal cement concrete ncc is the flowability property of scc by its on one of the key differences between the self compacting concrete scc and normal cement concrete ncc is the flowability property of scc by its on weight.
Technical brief on rollercompacted concrete pavement. Self compacting concrete scc developed by professor hajime okamuraof kochi university of technology, japan, in1986 during his research, okamura found that the main cause of the poor durability performances of japanese concrete in structures was the inadequate compacting of the concrete in the casting operations. Scc is a highly flowable, nonsegregating, special concrete type that can settle into formworks, and encapsulates, heavily reinforced, narrow and deep. Self compacting concrete scc can be defined as a concrete that is able to flow under its own weight and completely fill the formwork, even in the presence of dense reinforcement without any compaction, while maintaining the homogeneity of the. High strength selfcompacted concrete hsscc is a highly flow able high strength concrete that can spread into place under its own weight and achieve good consolidation in the absence of vibration and without exhibiting defects due to segregation. 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.
The worldwide interest in the development of selfcompacting concrete highlights the importance of this new type of concrete to modern day construction. King abdullah financial district kafd selfcompacted. Self compacting concrete, mineral additives, agricultural waste, structural properties, rheology. It uses superplasticisers and stabilisers to significantly increase the ease and rate of flow. Faster construction and requires less manpower reduce the overall cost of production. The product cost of high performance concrete can be more than offset by significant productivity and performance gains. The production of self compacting concrete scc is a relatively new technology. But such concrete was generally of lower strength and difficult to obtain. Since then, various investigations have been carried out and this type of concrete has been used in.
Mechanism of achieving self compaction 5 reduction of water. Properties of fresh and hardened high strength steel. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format. In case of selfcompacting concrete scc, achieving adequate airentrainment is a problematic issue because of one of the sideeffects of the functioning of a new generation of superplasticizers, i. For example, the strength of concrete containing 10% of entrapped air may be as little as 50% that of the. Scc can be placed easily in complicated formwork and dense reinforcement. Concrete has high flowability to undergo compaction by its own weight. A concrete mix can only be classified as self compacting concrete if the requirements for all the following three workability properties are fulfilled.
Self compacting concrete is a fluid mixture suitable for. Self compacting concrete gets dense and compacted due to its own selfweight. Selfcompacting concrete procedure for mix design article pdf available in leonardo electronic journal of practices and technologies 712 june 2008 with 35,326 reads how we measure reads. Ppt self compacting concrete powerpoint presentation. The test results showed that the self compacted concrete exhibited an early strength development rate more than that for plain normal concrete due to the presence of the fine materials.
Three steel fibers percentages by volume of concrete are used 0. Because evolution can flow from a single point note. Difference between self compacting and normal concrete. Review of sustainability in selfcompacting concrete. Self consolidating concrete scc, also known as self compacting concrete, is a highly flowable, nonsegre gating concrete that can spread into place, fill the. This lead to the development of self compacting concrete scc whose concept was first initiated by japan in the mid of 1980s. Behavior of different selfcompacted concrete mixes on short. Due to this it can increase the cost and temperature during hydration which leads to possible effect on other properties such as creep and shrinkage. The hardened concrete is dense, homogeneous and has the same. Self compacting concrete scc advantages and disadvantages. Self compacting concrete scc is considered as a concrete which can be placed and compacted under its self weight with little or no vibration effort, and which is at the same time, cohesive enough to be handled without segregation or bleeding. Cemflow is a range of highly specialised self compacting readymixed concrete formulations, each presenting significant advantages over. It uses super plasticisers and stabilizers to significantly increase the ease and rate of flow. Selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction.
Pdf selfcompacting concrete procedure for mix design. Self compacting concrete incorporating highvolumes of class. Since compaction of concrete is designed to expel entrapped air and optimise the density of the concrete, it benefits most of the properties of hardened concrete. Self compacting concrete seminar report, ppt, pdf for. 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 has been used in bridges and even on precast sections. In case of self compacting concrete scc, achieving adequate airentrainment is a problematic issue because of one of the sideeffects of the functioning of a new generation of superplasticizers, i. Scc is a high performance concrete that consolidates under its self weight, and adequately. Pdf selfcompacting concrete was first developed in 1988 to achieve durable concrete structures. 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. Since then, various investigations have been carried out and this. Selfcompacting concrete applications and advantages. In this project, the scc was mixed onsite and pumped through a piping system to the specified point, located 200 meters away. Self compacting concrete was first developed 1988 in order to achieve durable concrete structures.
Hence to overcome these defects the self compacting concrete is used. Selfcompacting concrete scc, also known as selfconsolidating concrete, is one of the most widely used concrete types, mainly because of its selfcompacting characteristics and strength. Workability gained through superplasticizers and viscosity modifying agents. A committee was formed to study the properties of self compacting concrete, including a fundamental investigation on workability of concrete, which was carried out by ozawa et al 2. Selfcompacted concrete our solution high performance admixtures master glenium 51 and masterglenium 110m help to cover all projects requirements the customers benefit an onsite technical assistance and training were provided to ensure. Rollercompacted concrete rcc as a paved surface offers facility owners and pavement designers a concrete pavement alternative that may better meet the requirements of specific pavement projects than conventionally castinplace concrete pavements. 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. A measure of the ease by which fresh concrete can be placed and compacted. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of. An experimental investigation has been carried out to determine different characters like workability and strength of selfcompacting concrete scc.
Concrete has to be heavily vibrated for flow into very intricate forms or forms that have a lot of reinforcing bars. Selfcompacting concrete was first developed in 1988 to achieve durable concrete structures. Selfcompacting concrete scc is a flowing concrete that does not require vibration and, indeed, should not be vibrated. Hence it can be used for construction purposes and precast concrete elements with a moderate cost and satisfaction strength. One of the most remarkable projects built using self compacting concrete is the akashikaikyo suspension bridge. The utilisation of selfcompacting concrete scc is growing rapidly. Experimental study on fiber reinforced self compacting. Properties of fresh and hardened high strength steel fibers.
The tests show that self compacted concrete is weak in modulus of elasticity but with higher shrinkage ferrara, l. High deformability of mortar and concrete self compacting concrete. By the early 1990s, japan has developed and used scc. This standard covers the test method for slump flow of self compacting concrete with a maximum coarse aggregate size of 40 mm or less.
Selfcompacting concrete scc is considered as a concrete which can be placed and compacted under its selfweight with little or no vibration effort, and which is at the same time, cohesive enough to be handled without segregation or bleeding. Self compacting concrete seminar report, ppt, pdf for civil. Jun 17, 2019 selfconsolidating concrete is a highly flowable type of concrete that spreads into the form without the need for mechanical vibration. Introduction origin of selfcompacting concrete selfcompacting concrete scc is an innovation and a breakthrough in the construction industry.
The development of a special type of concrete, namely self compacted concrete provides an opportunity to the contractors and altered the options open to the construction industry. 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. Selfcompacting concrete leonardo electronic journal of. Most of the differences shown by scc is due to this variation of flowability from the. The development of a special type of concrete, namely selfcompacted concrete provides an opportunity to the contractors and altered the options open to the construction industry. 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. Since then, various investigations have been carried out, and the concrete has been used in practical structures in japan, mainly by large construction companies. Self compacted concrete seminar 1 free download as powerpoint presentation. It provides many new solutions to fresh and hardened properties of concrete. One such latest generation concrete is self compacting concrete scc. It has good ability to mould in any shape with the help of mould. Self compacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2.
Okamura at kochi university, japan, at a time when skilled labor was in limited supply, causing difficulties in concrete. Methods of testing self compacting concrete workability. Nan su, kungchung hsu, hiswen chai a simple mix design method for selfcompacting concrete, cement and concrete research 31 2001, pp. The production of selfcompacting concrete scc is a relatively new technology.
Behavior of different selfcompacted concrete mixes on. A committee was formed to study the properties of selfcompacting concrete, including a fundamental investigation on workability of concrete, which was carried out by ozawa et al 2. Scc is a high performance concrete that consolidates under its selfweight, and adequately. Because scc is a viable solution to various concrete placement problems, astm has established subcommittee c09. Concrete is compacted by external means of vibration. P,india is used as additives according to astm c 618 5. Rcc pavement applications can be tailored to the specific. Introduction by the early 1990s, japan has developed and used scc. Introduction origin of self compacting concrete self compacting concrete scc is an innovation and a breakthrough in the construction industry. This is used where the reinforcement is in a way that there are very congested areas in which the compaction equipments i. Also, it showed that it is possible to manufacturing structural lightweight concrete selfcompacting with sufficient durability. 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. Also, it showed that it is possible to manufacturing structural lightweight concrete self compacting with sufficient durability. Self compacting concrete procedure for mix design article pdf available in leonardo electronic journal of practices and technologies 712 june 2008 with 35,326 reads how we measure reads.
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