Mix design of self compacting concrete pdf scc

Ozawa introduction self compacting concrete scc is an pioneering concrete that does not involve shuddering for insertion and compaction. Self compacting concrete scc is a type of concrete, which flows under the sole influence of gravity up to leveling, air out and consolidates itself without any external compaction energy. Self compacting concrete scc is a special type of concrete able to flow and compact under its self weight. The highlight of this paper is, simplest process of mix design according to indian standard code of mix design is10262 and it. Scc can be placed easily in complicated formwork and dense reinforcement. Selfconsolidating concrete, also known as selfcompacting concrete scc, is a highly flowable, nonsegregating concrete that spreads into place, fills formwork, and encapsulates even the most congested reinforcement, all without any mechanical vibration. The test results for acceptance characteristics of. Self compacting concrete scc is a special type of concrete which can be placed and consolidated under its own weight without any vibration effort due to its excellent deformability, and which at the same time is cohesive enough to be handled without segregation or bleeding. Self compacting concrete scc mix design must involve key practices to achieve the requirements of quality and durable mix. Self compacting concrete download ebook pdf, epub, tuebl. In this paper, investigation for establishing a rational mixdesign method with selfcompatibility been carried out from the viewpoint of making selfcompacting concrete.

A practical mix design method for selfcompacting concrete. Selfconsolidating concrete scc, also referred to as selfcompacting concrete, is able to flow and consolidate on its own. Best practices guidelines for selfconsolidating concrete. The test mixes were found to meet the necessary selfcompacting and the compressive strength criteria, thus fully validating the proposed mix proportioning method. Scc concrete, also known as self consolidating concrete and self compacting concrete is a highly flowable, nonsegregating concrete that spreads into place, fills formwork, and surrounds even the most congested reinforcement, without the use of any mechanical vibration. Self compacting concrete has been placed at heights taller than 5 meters without aggregate segregation.

Generally the three major characteristics of concrete are workability, strength, and durability. It is able to gush under its own load, completely filling form. Selfcompacting concrete scc is an innovative concrete that does not requires vibration for placing and compaction. Pdf a simple tool for self compacting concrete mix design. Scc looks very different from conventional concrete while mixing. Self compacting concrete materials, properties and tests. The highly fluid nature of scc makes it suitable for placing in difficult conditions and in sections with congested reinforcement. The utilisation of selfcompacting concrete scc is growing rapidly. Introduction the development of self compacting concrete scc by professor hajme 1 okamura and k. This investigation considers the development of the technology and use of scc. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format.

Kelebihan self compacting concrete scc kelebihan dari scc diantaranya. The self compacting concrete, which contains more fines content, is proved to be more durable. The notable difference of scc from normal concrete is that, the scc has more. A simple tool has been designed for self compacting concrete scc mix design with 29% of coarse aggregate, replacement of cement with metakaolin and class f flyash, combinations of both and controlled scc mix with 0. Mix design requirements for self compacting concretescc. Best practices guidelines for selfconsolidating concrete 3 what is selfconsolidating concrete. Therefore, this method reduces considerably the extent of laboratory work, the testing. Scc results in durable concrete structures, and saves labour and consolidation noise. This paper deals with the mix design of selfcompacting concrete. The paper presents an experimental procedure for the design of self. The composition of self compacting concrete is similar to that of normal concrete, that is, cement, fine and coarse aggregates, water, mineral and chemical admixtures. 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 procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2. The concrete mix of scc must be placed at a relatively higher velocity than that of regular concrete.

Selfcompacting concrete scc it uses superplasticisers and stabilisers to significantly increase the ease and rate of flow. However the technological considerations and mixing problems in lwc and scc still govern the lwscc mix design. Mix design yang mampu memenuhi kriteria filling ability, passing ability dan ketahanan terhadap segregasi. Written by an international group of contributors who are. Materials, properties and applications presents the latest research on various aspects of selfcompacting concrete, including test methods, rheology, strength and durability properties, scc properties at elevated temperature, sc manufacturing with the use of scms, recycled aggregates and industrial byproducts. Very simply, self consolidating concrete scc is simply a mix that is optimized for flow characteristics. A simple tool has been designed for self compacting concrete scc mix design with 29% of coarse aggregate, replacement of cement with metakaolin and class f flyash. Testing selfcompacting concrete testing selfcompacting concrete assessing the workability of scc mix can be divided into three categories. Learning outcomes understanding the basics of scc being familiar with the requirements and limits of designing a scc concrete mix implementing the scc concrete mix design tool excel work sheet being able to adjust the scc mix ingredients. Scc, similarly to all concrete mixes, should be carefully designed to achieve the required performance characteristics, while being properly placed and properly cured. 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. 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.

Self compacting concrete was first developed 1988 in order to achieve durable concrete structures. Pdf selfcompacting concrete procedure for mix design. The composition of self compacting concrete is same of. Lackof globally accepted test standard and mix design costlier than conventional concrete based on concrete. Learning outcomes understanding the basics of scc being familiar with the requirements and limits of designing a scc concrete mix implementing the scc concrete mix design tool excel work sheet. In this paper, investigation for establishing a rational mix design method with self compatibility been carried out from the viewpoint of making self compacting concrete. The utilisation of self compacting concrete scc is growing rapidly. Concrete producers must retrain their eyes for this very fluid mixture as it turns corners and fills forms. Scc can be made from any of the constituents that are generally used for structural concrete. A simple mix design method for selfcompacting concrete. It was a response to the lack of qualified skilled workers at the construction sites and a solution for the accomplishment of durable concrete structures. Self compacting concrete scc is an innovative concrete that does not require vibration for placing and compaction.

Self compacting concrete, mix design, plastic stage, compressive strength, rice husk ash 1. However, even nowadays, there is still a lack of knowledge about scc, especially regarding the few practical mix design methods available. Selfcompacting concrete scc is a special type of concrete which can be placed and consolidated under its own weight without any vibration effort due to its excellent deformability, and which at the same time is cohesive enough to. Self compacting concrete download ebook pdf, epub, tuebl, mobi. Fresh concrete is combined of fine and coarse aggregates suspended in a matrix of binder paste. The main ingredients used in design of self compacting concrete are. The basic properties to be achieved by an scc mix is flowability, passing ability, strength, and segregation resistance. Importantly, the investigation aims to highlight the opportunities for using scc in south africa. A concrete mix can only be classified as scc if it has the above mentioned characteristics. Self compacting concrete scc is becoming a popular form of concrete usage in a range of applications throughout the world.

A simple mix design method for self compacting concrete. Viscosity of the mortar and the volumetric fraction of the aggregates control the flow behavior. It is believed that strength and durability are related to the hardened concrete and workability is related to the fresh concrete, however hardened properties may be directly attributed to the mix design and fresh properties. Investigations for establishing a rational mix design method and selfcompactability testing methods have been carried out from the. Selfcompacting concrete scc was founded in 1986, from these days until now its used profusely due to its different features like one of them the sustainability by using the waste materials. Ordinary portland cement either 43 or 53 grade cement can be used. Investigations for establishing a rational mix design method and self compactability testing methods have been carried out from the. Self compacting concrete seminar report, ppt, pdf for civil. Mix design of self consolidating concretes exercise 8 exercise 8. Selfcompacting concrete procedure for mix design from.

To be considered self compacting, concrete must flow easily under its own weight, so its yield stress must be very low. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the. Self consolidating high performance concrete scc self. 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. Keywords self compacting concrete, flowability, passing ability, resistance to segregation, fly ash, superplasticizer. In 1988, self compacting concrete scc a highfl uidity concrete that maintains its stability was developed in japan. A total of 8 numbers of column specimens have to be tested in this experimental investigation. 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. The paper presents an experimental procedure for the design of self compacting concrete mixes.

The size of the aggregates used for scc design is limited to 20mm. Self compacting concrete seminar report, ppt, pdf for. Introduction selfcompacting concrete scc, which flows under its own weight and does not require any external vibration for compaction, has revolutionized concrete placement. The selfcompacting concrete european project group was founded in january 2004 with.

National institute of technology, uttarakhand, india. Selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. Pdf mix design of selfcompacting concretea new approach. Mix design for self compacting concrete or scc cannot be conducted directly because there are many control parameters in its rheological 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. 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. It can be used in precast applications or for concrete placed on site. 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. As no specific mix design procedures for scc are available mix design can be done with conventional bis method and suitable adjustments can be done as per the guidelines provided by different agencies. Over the last years, scc has been successfully used. Jun 17, 2019 the concrete mix of scc must be placed at a relatively higher velocity than that of regular concrete. Comparison of scc over nc ingredients normal concrete selfcompacting concrete. Mix design of self compacting concrete based on ultra high. The specimens are of size mm diameter and 750mm in height.

Selfcompacting concrete scc is becoming a popular form of concrete usage in a range of applications throughout the world. This paper deals with the mix design of self compacting concrete. Scc, was first introduced in the late 1980s by japanese researchers, is highly workable concrete that can flow under its own weight. Self consolidating concrete, also known as self compacting concrete scc, is a highly flowable, nonsegregating concrete that spreads into place, fills formwork, and encapsulates even the most congested reinforcement, all without any mechanical vibration. It covers the basic principles and underlying scientific theory, practical advice for production of scc and its use in construction practice. A typical mix design of scc in comparison with conventional concrete. Started in japan, numbers of investigations were reported worldwide on the mix design of scc, its microstructure and durability aspects.

The seminar report on selfcompacting concrete which explains the mix design, advantages and disadvantages, applications, properties,process of making selfconsolidating concrete, theoretical and experimental studies with test results. Traditionally, concrete with the fluidity of scc has had a very high watertocement ratio, which would lower compressive strengths and compromise. Sangat encer, bahkan dengan bahan aditif tertentu bisa menahan slump tinggi dalam jangka waktu lama slump keeping admixture. The concrete community of various european countries intensely researches its application and implements experiences. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Ozawa introduction selfcompacting concrete scc is an pioneering concrete that does not involve shuddering for insertion and compaction. By the early 1990s, japan has developed and used scc. The test mixes were found to meet the necessary self compacting and the compressive strength criteria, thus fully validating the proposed mix proportioning method. Selfcompacting concrete scc is a type of concrete, which flows under the sole influence of gravity up to leveling, air out and consolidates itself without any external compaction energy. A simple tool has been designed for self compacting concrete scc mix design with 29% of coarse aggregate, replacement of cement with metakaolin and. Ozawa in 1986 has made an amazing impression on the construction industry by overcoming some of the complications associated with concrete in. Self compacting concrete scc is a flowing concrete mixture that is able to consolidate under its own weight. Scc is a special kind of concrete that can flow through and fill the gaps of reinforcement and corners of molds without any need for vibration and compaction.

Mix design of self compacting concrete with limestone filler versus. Self compacting concrete an overview sciencedirect topics. Scc concrete selfconsolidating concrete mixes a very. Efnarc guidelines for scc available as a free download from. Faster construction and requires less manpower reduce the overall cost of production. The mix designed as per the requirements are tested before using it in construction. Self compacting concrete scc was founded in 1986, from these days until now its used profusely due to its different features like one of them the sustainability by using the waste materials. In the mix design of scc, the relative proportions of key components are generally considered by. Selfcompacting concrete applications and advantages. Mix design of self consolidating concretes exercise 8 mycourses.

The scc requires high powder content mainly of cement up to 600kgm 3 to achieve its. This specification and guideline utilises efnarcs broad practical experience with scc to provide a framework for design and use of high quality scc. Self compacting concrete scc advantages and disadvantages. Selfcompacting concrete with a similar water cement or cement binder ratio will usually have a slightly higher strength compared with traditional vibrated concrete, due to the lack of vibration giving an improved interface between the aggregate and hardened paste. Selfcompacting concrete was first developed 1988 in order to achieve durable concrete structures. It can also be used in areas with normal and congested reinforcement, with aggregates as large as 2 inches. Selfcompacting concrete scc is a flowing concrete mixture that is able to consolidate under its own weight. Pdf a simple mix design method for selfcompacting concrete. In 1988, selfcompacting concrete scc a highfl uidity concrete that maintains its stability was developed in japan. The relative proportions of key components are considered by volume rather than by mass. It is super workable due to its low watercement ratio, which gives rapid strength development, more durability, and best quality.