Bulent erkmen carol shield catherine french department of civil engineering university of minnesota october 2008 published by. 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. The highly fluid nature of scc makes it suitable for placing in difficult conditions and in sections with congested reinforcement. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of. Scc has several advantages over normal conventional concrete. Fresh concrete selfcompacting concrete is characterized by flow ability, passing ability and. The range of benefits offered go beyond fundamental aspects of concrete quality and productivity. Experimental studies on m30 grade self compacting concrete.
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. It is able to flow and consolidate under its own weight, completely filling the formwork even in the presence of dense reinforcement. Incorporation of silica fume into concrete mixtures enhances all physical properties. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format. In all scc mixes compressive strengths of standard cube specimens were comparable to those of traditional vibrated concrete made with similar water cement ratios if anything strengths were higher. Okamura from the university of tokyo japan is mainly responsible for initiating the development of scc. One of the most outstanding advances in the concrete technology over the last decade is self compacting concrete scc. Inspection manual for selfconsolidating concrete in. This recommendation specifies the performance required of selfcompacting concrete, primarily the selfcompactability, and provide verification and inspection methods. 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.
Four specimens were reinforced with normal steel bars reference specimens and the remaining 16 with steel tubes. Self compacting concrete scc for prestressed bridge girders final report prepared by. 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. Self compacting concrete scc non segregating concrete. 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. The self compacting concrete is a concrete which flows and settles due to its own weight without segregation and bleeding. The inplace cost savings, performance enhancements, or both, are the driving forces behind the use of selfconsolidating concrete. Selfcompacting concrete scc v introduction to selfcompacting concrete. A numerical model for selfcompacting concrete flow. In scc, the aggregates contribute 6070% of the total volume. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2.
Higher cement content andor lower watercement ratio leads to more effective results of selfcuring agents in concrete. Selfcompacting concrete scc is a special kind of innovative concrete, which is exceedingly flowable and nonsegregating concrete, and can be easily placed and compacted under its own self weight need not requiring any mechanical vibration due to its good deformability nature and also as it acquire a property called capability of flowing. 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. M sonebi, medium strength self compacting concrete containing fly ash. Selfcompacting concrete is a highly flowable, stable concrete which flows readily into places around. Self consolidating concrete or self compacting 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. According to aci 237r07, selfconsolidating concrete, properly proportioned and placed selfconsolidating concrete can result in both economic and technological benefits for the end user. Ozawa introduction self compacting concrete scc is an pioneering concrete that does not involve shuddering for insertion and compaction. Selfcompacting, or selfconsolidating concrete scc was first developed in japan in the early nineties. The inplace cost savings, performance enhancements, or both, are the driving forces behind the use of self consolidating concrete. Selfconsolidating concrete for precast structural applications by eric p. 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. This study investigates the behavior of selfcompacting concrete scc specimens reinforced with smalldiameter steel tubes in lieu of reinforcing bars. Placing and curing selfcompacting concrete in hot climates carlos f.
Self compacting concrete scc is a flowing concrete mixture that is able to consolidate under its own weight. Because of the wellcontrolled conditions, the introduction of scc in the precast concrete industry was successful. Self compacting concrete is world widely abbreviated by an acronym scc. No single method has been found until date, which characterizes all the relevant workability aspects, and hence, each mix has.
Behavior of selfcompacting concrete columns reinforced. The work presented in this paper seeks to build on the existing knowledge in this area by. In most previous studies on selfcompacting concrete, t400 is used to estimate the flow velocity of selfcompacting concrete. The grading curve for the filler can be finer graded for house building concrete with fewer. Scc is also otherwise called as highfluidity concrete, self leveling concrete and self consolidating concrete. Experimental investigation on selfcuring selfcompacting concrete by replacing natural sand by msand and coarse aggregates by light weight aggregate for m40 grade concrete mr. 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 scc is a highly flowable concrete which does not segregate and can spread into place, fill the formwork with heavily congested reinforcement without any mechanical vibration. 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. Roadstone self compacting concrete scc is a highly fluid and flowable non segregating concrete that requires no mechanical vibration.
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. Despite its increased fluidity, self compacting concrete maintains the high quality demanded by todays building industry, presenting both flexibility as. As per is4562000 6, cement is replaced by weight of material. Selfcompacting concrete scc for prestressed bridge girders final report prepared by. Selfcompacting concrete scc is an innovative concrete that does not requires vibration for placing and compaction. May 14, 2014 this paper presents the use of blend of portland cement with rice huskbark ash in producing self compacting concrete scc.
This standard covers the test method for slump flow of selfcompacting concrete with a maximum coarse aggregate size of 40 mm or less. There fore each selfcompacting concrete has to be designed for the particular structure to be constructed. Properties of selfcompacting concrete with recycled coarse. There fore each self compacting concrete has to be designed for the particular structure to be constructed. 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. Selfcompacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing. Hence to overcome these defects the self compacting concrete is used.
Fresh concrete self compacting concrete is characterized by flow ability, passing ability and. Self compacting concrete seminar report, ppt, pdf for civil. Self compacting concrete an overview sciencedirect topics. However, to date limited research exists exploring the use of coarse rca in scc. Many different methods have been developed to characterize the properties of scc. Lbox has arrangement and the dimensions as shown in figure 2. Minnesota department of transportation research services section 395 john ireland boulevard, mail stop 330 st. M sonebi, medium strength selfcompacting concrete containing fly ash. Materials for selfcompacting concrete the constructor. 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.
Experimental investigation on selfcuring selfcompacting. Scc is modern innovation does not require vibration for placement and compaction. Self compacting concrete seminar report, ppt, pdf for. Selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. This paper presents the use of blend of portland cement with rice huskbark ash in producing selfcompacting concrete scc. Mar 16, 2016 o self compacting concrete is an innovative concrete that does not require vibration for placing and compaction. P,india is used as additives according to astm c 618 5. 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. In the present context the self compacting concrete can be proved as boon to construction industry. One such latest generation concrete is self compacting concrete scc. Substantial research was carried out with regard to the properties of scc. Selfcompacting concrete scc is a highly fluid concrete that does not require any vibration during the placement process 1, 2. Modelling using factorial experimental plans, cement and concrete research, vol 34, pp 11991208, 2004.
Research paper relation between workability and compressive. Self compacting concrete and admixtures aggregate research. Although scc is advantageous its processability in hot climate regions is not well understood and is the main topic of this investigation. Selection of the type of cement will depend on the overall requirements for the concrete, such as strength, durability etc. All types of cement conforming to en 197 are suitable. Self compacting concrete is a recent development that shows potential for future applications. Ozawa introduction selfcompacting concrete scc is an pioneering concrete that does not involve shuddering for insertion and compaction. It can flow easily in congested reinforced areas such as in beam column joints. Self compacting concrete is a type of concrete that is highly fluid allowing it to selflevel, penetrate into complicated areas and formwork, through complex reinforcement and much more.
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. Compressive strength, porosity, chloride penetration, and corrosion of scc were determined. 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. Selfcompacting concrete is a recent development that shows potential for future applications.
Use of rice huskbark ash in producing selfcompacting concrete. Development of scc self compacting concrete scc developed by professor hajime. According to aci 237r07, self consolidating concrete, properly proportioned and placed self consolidating concrete can result in both economic and technological benefits for the end user. Self compacting concrete scc, also known asself consolidating concrete, is. However, no specification for t1 is given in efnarc or other codes. Study of sorptivity of selfcompacting concrete with. Professor, reva institute of technology and management, bangalore 560064. Most revolutionary development in concrete construction for several decades. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The concrete was cast along the entire lengths of the walls to avoid construction joints.
This standard covers the test method for slump flow of self compacting concrete with a maximum coarse aggregate size of 40 mm or less. 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. Inspection manual for selfconsolidating concrete in precast members product 054p1 txdot project 054. It is able to gush under its own load, completely filling form. Project report study on self compacting concrete using. Every filler has its on influence on the mix for self compacting concrete and must be investigated by different methods mortar rheology tests and mixing trials. Keywords self compacting concrete, flowability, passing ability, resistance to segregation, fly ash, superplasticizer. It meets the demands placed by the requirements of speed and quality in concrete construction. 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. Properties of selfcompacting concrete with recycled. We used similar compositions of scc and cc to study the fresh cement workability. Selfcompacting concrete scc for prestressed bridge girders. Based on current research and available knowledge about scc presented in this paper, the following trends are emerging.