Selfcompacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing. Mix design of self compacting concrete based on ultra high. In recent years, some efforts have been made to combine the advantages of these two types of concrete in one package called lightweight selfcompacting concrete lwscc. The notable difference of scc from normal concrete is that the. 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. A study of mix design and durability of self compacting. Implementation report c implementation of hvfa concrete from laboratory studies into bridge application prepared by john j. Pdf selfcompacting concrete procedure for mix design. Hitherto, one of the most influencing factors is the mix design or proportioning that contributes major parts directly to the quality of finished product. 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. Guidelines for mix design of scc and execution of scc. Wang, jj, li, r, xie, kz 2015 design and test of highperformance arch rib concrete of.
The notable difference of scc from normal concrete is that, the scc has more. Mix design procedure for self compacting concrete iosr. The study reported in this paper is the first metaanalysis aimed at obtaining statistical models for the fresh state behavior of self consolidating concrete scc mixes which effectively reproduce the complex relationships between mix design and fresh state performance. Mix proportion of steel slag selfcompaction concrete sscc, kgm3. Design and application of self compacting concrete. The composition of self compacting concrete is same of normal concrete, that is, cement, fine and coarse aggregates, water, mineral and chemical admixtures. Okamura from the university of tokyo japan is mainly responsible for initiating the development of scc. Selfcompacting concrete scc v introduction to selfcompacting concrete. Admixture experts and precasters provide important tips to work successfully with self consolidating concrete scc.
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 be handled without segregation or bleeding. The key properties of self consolidating concrete are its filling ability, passing ability and resistance to segregation. A simple tool for self compacting concrete mix design. Study on durability characteristics of selfcompacting. Self compacting concrete mix design for m30 kshama shukla1, akansha tiwari2 1 m. Nansu et al proposed a simple mix design method for self compacting concrete the amount of aggregates required is. Concrete mix design for high strength selfcompacting. One of the most important results of the danish scc consortiums work is the drafting of two guidelines providing recommendations and instructions on the execution with scc and mix design of scc. Scc can be made from any of the constituents that are generally used for structural 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 mechanical consolidation. Article information, pdf download for influence of concrete mix. This paper proposes a new mix design method for selfcompacting concrete scc. A study of mix design and durability of self compacting concrete mohammed abdul hameed civil engineering december 2005 abstract a self compacting concrete scc is the one that can be placed in the form and can go through. Self compacting concrete was first developed 1988 in order to achieve durable concrete structures.
Furthermore, maximum use is made of mortar tests, which are more convenient than tests on concrete. Since then, various investigations have been carried out, and the concrete has been used in practical structures in japan, mainly by large construction companies. The mix design method is composed of two simple stages. Design of selfcompacting concrete with fly ash magazine. The utilisation of selfcompacting concrete scc is growing rapidly.
A database compiled with data from more than 120 different sources was analyzed. Investigations for establishing a rational mix design method and self compactability testing methods have been. 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. This standard covers the test method for slump flow of self compacting concrete with a maximum coarse aggregate size of 40 mm or less. 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. College, gujarat technological university gujarat, india. The highlight of this paper is, simplest process of mix design according to indian standard code of mix design.
Applied sciences free fulltext experimental study on the. The ingredients for self compacting concrete are similar to conventional concrete. Investigations for establishing a rational mix design method and self compatibility testing methods have been carried out from the viewpoint of making self compacting concrete a standard concrete. In the workability experiment of fresh sscc prepared with the reference mix. This is a sample project report on self compacting concrete. Working with scc neednt be hit or miss precast concrete. There are a wide range of publications about lwc concerning different light weight aggregates and mix. This paper puts forward a simple mix design method for lightweight aggregate selfcompacting concrete lwascc based on the packing and mortar film thickness mft theories. Permeation properties of self compaction concrete 6.
Self compacting concrete scc can be defined as a fresh concrete which possesses superior flowability under maintained stability i. In this paper, a new mix design methodology is proposed for proportioning of self compacting fly ash concretes based on the efficiency concept. This paper deals with the mix design of self compacting concrete. Conclusions the extensive test programme has shown that production of self compacting concrete with readily available uk materials is feasible. It can be used in precast applications or for concrete placed on site. In this research, the design of mix mortar flow with ultrahigh compressive strength was made by the type i cement, i. The present investigation is an attempt to evaluate the efficiency of metakaolin in self compacting concrete at various replacement percentages, through the efficiency concept proposed earlier for the design of high strength metakaolin concretes and suggest a methodology for incorporating metakaolin in self compacting concrete. This recommendation specifies the performance required of selfcompacting concrete, primarily the self compactability, and provide verification and inspection methods. Effect of the mix design on the robustness of fresh self compacting concrete. First international symposium on design, performance and use of self consolidating concrete scc2005 china, 26 28 may 2005, changsha, hunan, china.
Influence of concrete mix proportions on axial performance of. The relative proportions of key components are considered by volume rather than by mass. Self compacting concrete an overview sciencedirect topics. Pdf mix design of selfcompacting concretea new approach. Evaluation of self consolidating concrete celik ozyildirim, ph. Mechanical properties of selfcompacting concrete rilem. Several methods exist for the mix design of scc, as explained in 3. Please note that the following pdf file, offered by.
This specification and guideline utilises efnarcs broad practical experience with scc to provide a framework for design and use of high quality scc. Selfconsolidating concrete scc and highvolume fly ash. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta concrete that can flow under its own weight through restricted sections without segregation and bleeding. The guidelines were published in august 2007 in danish and the english versions were available in june 2008. Production and placement of self compacting concrete 4. Optimisation of mix proportioning of selfcompacting concrete.
Fundamental fresh state properties of selfconsolidating. Integration approach of the couette inverse problem of powder type self compacting concrete in a widegap concentric cylinder rheometer. Testing and mix design method of self compacting concrete. Design and application of self compacting concrete free download as powerpoint presentation. The highlight of this paper is, simplest process of mix design according to indian standard code of mix design is10262 and it. Selfcompacting concrete procedure for mix design article pdf available in leonardo electronic journal of practices and technologies 712 june 2008 with 34,769 reads how we measure reads. Collepardi, a very close precursor of selfcompacting concrete scc, supplementary volume of the proceedings of threeday canmetaci international symposium on sustainable development and concrete technology, s. It was first developed in japan in 1988 in order to achieve durable concrete structures by improving quality in the construction process. The mix design for scc was arrived as per the guidelines of european federation of national associations representing for concrete efnarc. However, even nowadays, there is still a lack of knowledge about scc, especially regarding the few practical mix design methods available.
Approaches to mix design and measurement of workability for selfcompacting 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. It is possible to design a fly ash concrete of the required strength through the efficiency concept, and the same is also true for the design of self compacting concrete scc. Pdf self compacting concrete scc is a flowing concrete mixture that is able to consolidate under its own weight. A simple mix design method for selfcompacting concrete. When self compacting concrete becomes so widely used that it is seen as the standard concrete rather than a special concrete, we. 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. Abstract self compacting concrete scc was first practiced in japan which was a very special type of concrete or high performance concrete that could flow.
Less labor, quicker casting times, better surface finish and increased concrete densities are common reasons for choosing self consolidating concrete for concrete countertops. Guru jawahar and others published a simple tool for self compacting concrete mix design find, read and cite all the research you need on researchgate. Such concrete should have a relatively low yield value to ensure high flow. Self consolidating concrete scc and highvolume fly ash concrete hvfac for infrastructure elements. In new zealand there are large deposits of pumice in the central north island. Mix design of lightweight self consolidating concrete using new zealand pumice jamal almulla wilco precast ltd summary pumice is a volcanic aggregate that has been used to produce lightweight concrete for many years.
Selfcompacting concrete is quite commonly used in concretefilled steel tube. The concrete community of various european countries intensely researches its application and implements experiences. Li, w, han, lh 2012 seismic performance of cfst column to steel. Tech student,civil engineering department, brcm college rohtak, haryana, india. 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. A practical mix design method for selfcompacting concrete. Some precasters report that working with self consolidating concrete scc can be a hit or miss affair. Selfcompacting concrete procedure for mix design article pdf available in leonardo electronic journal of practices and technologies 712. Pdf a simple tool for self compacting concrete mix design.
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