A simple tool has been designed for self compacting concrete scc mix design with 29% of coarse aggregate, replacement of cement with metakaolin and. Mix design for self compacting concrete or scc cannot be conducted directly because there are many control parameters in its rheological properties. Hence to overcome these defects the self compacting concrete is used. Self compacting concrete scc for prestressed bridge girders 7. In 2011, b mahalingam et al carried out an experimental work on scc using fly ash as partial. Self consolidating concrete scc, also referred to as self compacting concrete, is able to flow and consolidate on its own. Self compacting concrete application, materials, and.
By utilizing different ingredients some various design mix method are discussed in this paper and self compactability influenced by the mix proportions and. 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. Ozawa in 1986 has made an amazing impression on the construction industry by overcoming some of the complications associated with. Lackof globally accepted test standard and mix design costlier than conventional concrete based on concrete. Selfcompacting concrete was first developed in 1988 to achieve durable concrete structures. Mix design of selfcompacting concrete a new approach. The methodology has already been successfully verified through a proper experimental investigation and the self compacting slag concretes were evaluated for their self compactability. Guru jawahar and others published a simple tool for self compacting concrete mix design find, read and cite all the. Self compacting concrete scc also called as self consolidating concrete or rheodynamic concrete is an innovative concrete that does not require vibration for placing and compaction. Influence of chemical admixtures and mixing on the mix proportion of general purpose self compacting concrete. Proportioning of selfcompacting concrete mixes based on target plastic viscosity. 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 is a fluid mixture suitable for placing in structures with congested reinforcement without vibration.
This paper proposes a new mix design method for selfcompacting concrete scc. Mixes, consisting of slag blended cement, gravel 416mm, three types of sand 01, 02 and 0. A rational method for the design of self compacting concrete mixes based on target plastic viscosity and compressive strength. This case becomes more complex if it should achieve a high compressive strength. Self compacting concrete, mix design, plastic stage, compressive strength, rice husk ash 1. This paper addresses experiments and theories on self compacting concrete. Self compacting concrete scc is an innovative concrete that does not require vibration for placing and compaction. Testing and mix design method of self compacting concrete. The mix design for self compacting concrete was designed by researchers from japan 4, 5, which then continued to grow with various methods 6 9. The mix designed as per the requirements are tested before using it in construction. Self compacting concrete is a highly flowable, yet stable concrete that can spread readily into place and fill the formwork without any consolidation and without undergoing any significant separation. 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. Jun 01, 2015 mix design method for self compacting metakaolin concrete with different properties of coarse aggregate mater des, 53 2014, pp. International research journal of engineering and technology irjet eissn.
Pdf testing and mix design method of self compacting. Pdf mix design steps for selfcompacting concrete irjet. Lack of globally accepted test standard and mix design. Approaches to mix design and measurement of workability for self compacting concrete josef petrus jooste a dissertation submitted to the faculty of engineering and the built environment, university of the witwatersrand, in fulfillment of the requirements of the degree of master of science in engineering. At the same time it is cohesive enough to fill spaces of. Conclusions based on the investigation conducted for the study of behavior of self compacting concrete the following conclusions are arrived. The test mixes were found to meet the necessary self compacting and the compressive strength criteria, thus fully validating the proposed mix proportioning method. They discussed the history development of scc, basic principles, various tests methods, segregation resistance and pass ability. Scc results in durable concrete structures, and saves labour and consolidation noise. Self compacting concrete procedure and mix design chautha ram1, ravi kumar2 1,2structural engineering, kurukshetra university, kurukshetra, haryana, india abstract an self compacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration.
Testing selfcompacting concrete testing selfcompacting concrete assessing the workability of scc mix can be divided into three categories. Dec 01, 2001 this paper proposes a new mix design method for selfcompacting concrete scc. Concrete library of jsce, no 25, june 1995, pp 107120. Introduction the development of self compacting concrete scc by professor hajme 1 okamura and k. 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. 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.
This paper describes a procedure specifically developed to achieve self compacting concrete. In 2011, b mahalingam et al carried out an experimental work on scc using fly ash as partial replacement material for cement, at replacement levels of 30%, 40% and 50% respectively and also using suitable super plasticizer. Best practices guidelines for self consolidating concrete 3 what is self consolidating concrete. If necessary, adjustments to the mix composition should then be made. The highlight of this paper is, simplest process of mix design according to indian standard code of mix design is10262 and it follows all the design conditions in line with indian standard code of reinforced concrete structure is. Self compacting concrete scc can flow into place and compact under its own weight into a uniform mass even areas of congested reinforcement. A scc mix powder content of 550 kgm3 is taken by different as steps adopted for normal concrete mix and it is fixing 0. The mix designed as per the self compacting concrete mix design must involve key practices to achieve the requirements of quality and durable mix. Pdf selfcompacting concrete procedure for mix design. The volume of excess paste was determined by experiments. Pdf mix design of lightweight selfcompacting concrete. Mix design of self compacting concrete based on ultra high. Self compacting concrete application, materials, and testing.
Doe the mix design indicate a penetration depth equal or less 602. Self compacting concrete scc was firstly developed in japan in 1987. Department of civil engineering university of minnesota. Ozawa in 1986 has made an amazing impression on the construction industry. Twodimensional pdf sph simulations of compressible turbulent. Selfcompacted concrete mix design and its comparison. Self compacting concrete scc mix design must involve key practices to achieve the requirements of quality and durable mix.
Proportioning of self compacting concrete mixes based on target plastic viscosity. Air content of freshly mixed self compacting concrete by the wsdot test pressure method method t 818 1. Specifications and guide lines for self compacting concrete, feb 2002. Jun 01, 2016 mix design and mechanical properties of self compacting light weight concrete int j. Concrete is a mixture of cement, sand, gravel and water which dries hard and strong and is used as a material for building. Twodimensional pdfsph simulations of compressible turbulent. A rational method for the design of selfcompacting concrete mixes based on target plastic viscosity and compressive strength. Investigations for establishing a rational mixdesign method.
As no specific mix design procedures for scc are available mix design can be done with. New absolute volume mix design method for selfcompacting. Design of selfcompacting concrete with ground granulated. In addition, it requires a lot of mixing plant and involves intensive mixing actions. Mix design requirements for self compacting concretescc. Tech student,civil engineering department, brcm college rohtak, haryana, india 2 assistant professor, civil engineering department, bit meerut, uttar pradesh. Introduction that 1 it requires quality control of paste and mortar former to scc mixing, while many readymixed concrete the development of self compacting concrete scc by producers do not have the necessary facilities for professor hajme okamura and k. Self compacting concrete normal concrete coarse aggregates 750920 880 fine aggregates 710900 930. Expan0ding the possibility of concrete design and placement. Self compatibility is basically impacted by the characteristics of materials and also the mix proportions. Pdf a simple tool for self compacting concrete mix design. It can be used in precast applications or for concrete placed on site. A simple mix design method for self compacting concrete kungchung hsu introductionself compacting concrete scc, a new kind of high performance concrete hpc with excellent deformability and segregation resistance, was first developed in japan in 1986. Scheme of compacted aggregate and concrete mixtures.
First, the amount of aggregates required is determined, and the paste of binders is then filled into the voids of aggregates to ensure that the concrete thus obtained has flowability, self compacting ability and other desired scc properties. Poly carboxylic ether has been used as highwater reducing agent to enable the concrete its self compacting properties. In general, scc results in reduced construction times and reduced noise pollution. Does the mix design indicate air content between 4. K et al carried out an experimental studies on m20 self compacting concrete in 2014. 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. The self compacting concrete produced by this new mix design had high deformability with moderate viscosity which ensured uniform disper sion of concrete constituents during transportation, casting. In this paper, a mix proportioning method modifying the design mix design methodology based on indian standard guidelines is proposed. Selfcompacting concrete journal of advanced concrete. A simple mix design method for selfcompacting concrete. Nansu method of mix design for self compacting concrete. The mix design procedure for self compacting concrete is example. Self compacted concrete mix design and its comparison with. Simple and rational methodology for the formulation of self.
Self compacting concrete involves the selection of proper constituent material, the addition of admixtures, and complex mix design methods in comparison to regular concrete. Jan 01, 20 the present paper is an effort towards presenting a new mix design methodology for the design of self compacting ggbs concretes based on the efficiency concept. Experimental studies on m30 grade self compacting concrete. Mix design procedure for self compacting concrete semantic. Conventional concrete introduction self compacting concrete scc was first developed in japan, in the early nineties of the previous century, under the stimulating leadership of prof. By the early 1990s, japan has developed and used scc. In addition, the test results for acceptance characteristics for self compacting concrete such as slump flow, jring, vfunnel and lbox are presented. Scc is characterized by its ability to flow into the formwork under its own weight and without segregating. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2. Since there are number of different approaches to the design of scc mixes, no specific method is recommended. Vsi values of 2 indicate that the concrete is unstable and the mix design should be immediately modified to obtain a vsi value of 0 or 1 i. 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. This paper deals with the history of scc development and its basic principle, different testing methods to test. Pdf self compacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration.
National institute of technology, uttarakhand, india. Experimental studies on m 25 grade of self compacting. Compared to vibrated concrete vc, scc has enhanced qualities and improves the durability of concrete, productivity and working conditions due to elimination of external vibration. Experimental studies on m 25 grade of self compacting concrete. Mix design approach for self compacting concrete laboratory trials should be used to verify the properties of the initial mix composition with respect to the specified characteristics and classes. Selfcompacting concrete scc for prestressed bridge girders. Pdf a simple mix design method for selfcompacting concrete. At the same time it is cohesive enough to fill spaces of almost any size and shape without segregation or bleeding. First, the amount of aggregates required is determined, and the paste of. Best practices guidelines for selfconsolidating concrete. The main idea behind self compacting concrete was, that such a concrete is robust and. Self compacting concrete government of maharashtra. Jan 01, 2019 selfcompacting concrete scc self consolidating concrete in north america is a family of tailored concretes with engineered properties in the fresh state. Self compacting concrete normal concrete coarse aggregates 750920 880 fine aggregates 710900 930 powderbinder 400600 310cement water 150200 190 23.
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