This research work presents properties of self compacting concrete after replacement of fine aggregate with powder of waste marble at different percentages 0%, 10%, 20%, 30% 40% and 50%. Over the last ten years, significant amount of work has been carried out on selfcompacting concrete all over the world. The flow able fluid nature of self compacting concrete makes it a good choice for placing concrete in difficult or under cha. Selfcompacting concrete is placed or poured in the same way as ordinary concrete but without vibration.
Similar to conventional concrete, scc can also be affected. The mechanisms governing the robustness of fresh self. Pdf properties of selfcompacting concrete with different. M sonebi, medium strength selfcompacting concrete containing fly ash. It can be poured quickly, flowing and spreading effortlessly. Self compacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing. Fresh and hardened properties of selfcompacting concrete. Self compacting concrete scc for prestressed bridge girders 7. Due to its properties and composition, the selfcompacting concrete is described here as being one of the future. Development of self compacting concrete by use of portland. Modelling using factorial experimental plans, cement and concrete research, vol 34, pp 11991208, 2004. Self compacting concrete scc, or self consolidating concrete in usa, is a segregationfree concrete although it is so fluid that it can completely fill any area of the formwork in the absence of any compaction effort. It is very fluid and can pass around obstructions and fill all the nooks and corners without the risk of either mortar or other ingredients of concrete separating out, at the same time there are no entrapped air or rock pockets. Controlling fresh properties of selfcompacting concrete containing waste glass powder and its influence on strength and permeability.
A numerical model for selfcompacting concrete flow. The concrete was cast along the entire lengths of the walls to avoid construction joints. Selfcompacting concrete scc v introduction to selfcompacting concrete. Selfcompacting concrete by s and corneliu bobliana iure abstract. Mixes, consisting of slag blended cement, gravel 416mm, three types of sand 01, 02 and 0. Self compacting concrete scc, also known asself consolidating concrete, is. Scc in europe in 2011 and 2012 was respectively only 2. International journal of civil and environmental engineering. Since then, various investigations have been carried out, and the concrete has been used in practical structures in japan, mainly by large construction companies. Pdf airentrainment problem in selfcompacting concrete. The ingredients for selfcompacting concrete are similar to conventional concrete.
Materials for selfcompacting concrete the constructor. This standard covers the test method for slump flow of selfcompacting concrete with a maximum coarse aggregate size of 40 mm or less. Properties of selfcompacting concrete with recycled coarse. Controlling fresh properties of selfcompacting concrete. Self compacting concrete incorporating highvolumes of class. Mar 19, 2017 self compacting concrete scc is a mixture of flowing concrete which is able to compact or consolidate by its own weight. 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. Scc, was first introduced in the late 1980s by japanese researchers, is highly workable concrete that can flow under its own weight. The present project investigates the making of selfcompacting concrete more affordable for the construction market by replacing high volumes of portland cement by fly ash. P,india is used as additives according to astm c 618 5.
This standard covers the test method for slump flow of self compacting concrete with a maximum coarse aggregate size of 40 mm or less. M sonebi, medium strength self compacting concrete containing fly ash. Introduction selfcompacting concrete scc is a new category of high performance concrete characterized by its ability to spread into a heavily reinforced area under its own weight without the need of vibration and. Final report evaluation of selfconsolidating concrete celik. Okamura from the university of tokyo japan is mainly responsible for initiating the development of scc. View self compacting concrete research papers on academia. It is able to flow and consolidate under its own weight, completely filling the formwork even in the presence of dense reinforcement. Selfcompacting concrete scc for prestressed bridge girders.
A total of 11 self compacting concrete mixes were prepared, of which one was a reference s1 without a nanoadditive. The main difference between conventional vibrated concrete cvc and selfcompacting concrete scc is observed in the fresh state, as scc has a significantly lower yield stress. Okamura in japan to offset a growing shortage of labour ouchi m 1999119. Highly fluid, agilia is the ultimate selfcompacting 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. Selfcompacting concrete scc, or selfconsolidating concrete in usa, is a segregationfree concrete although it is so fluid that it can completely fill any area of the formwork in the absence of any compaction effort. The range of benefits offered go beyond fundamental aspects of concrete quality and productivity. In selfcompacting concrete scc, large quantities of fly ash are needed to. Selfcompacting concrete scc is a mixture of flowing concrete which is able to compact or consolidate by its own weight. There are several methods for testing its properties.
Self compacting concrete an overview sciencedirect topics. Scheme of compacted aggregate and concrete mixtures. 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. Introduction selfcompacting concrete scc, which flows under its own weight and does not require any external vibration for compaction, has revolutionized concrete placement. Self compacting concrete incorporating highvolumes of. The paper presents the characteristics of the selfcompacting concretes, their advantages and disadvantages when they are used in buildings. Proportioning and performance evaluation of selfconsolidating. Self compacting concrete scc is a highly fluid concrete that does not require any vibration during the placement process 1, 2. Department of civil engineering university of minnesota. Introduction self compacting concrete scc is a new category of high performance concrete characterized by its ability to spread into a heavily reinforced area under its own weight without the need of vibration and. Received 17th june 2012, revised 19 th june 2012, accepted 21 st june 2012 abstract self compacting concrete is one of the most revolutionary developments in concrete research. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format. 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.
Magnel laboratory for concrete research department of structural engineering selfcompacting concrete. Introduction self compacting concrete scc represents one of the most significant advances in concrete technology for decades. 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. Conference on selfcompacting concrete and of the 1st rilem international. Selfcompacting concrete is characterized by the adoption of a concreting method that does not require vibration during placing.
The main characteristics of scc is the higher cement matrixaggregate ratio with respect to an ordinary concrete. One such latest generation concrete is self compacting concrete scc. Selfcompacting concrete scc concrete cement free 30. It is very fluid and can pass around obstructions and fill all the nooks and corners without the risk of either mortar or other ingredients of concrete separating out, at. A total of 11 selfcompacting concrete mixes were prepared, of which one was a reference s1 without a nanoadditive. However, no specification for t1 is given in efnarc or other codes. The following components were used to prepare the selfcompacting test concretes. Self compacting concrete incorporating highvolumes of class f. This paper addresses experiments and theories on selfcompacting concrete. 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. Scc, was first introduced in the late 1980s by japanese researchers, is highly workable concrete that can flow under its own weight through restricted. Testing selfcompacting concrete evaluate the deformability of scc in the absence of obstacles. Kloft, h hack, n mainka, j lowke, d large scale 3d concrete printing basic.
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. Please note that the following pdf file, offered by. There are, however, some differences between the hvfa self compacting concrete and the hvfa concrete designed by canmet. 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. The present project investigates the making of self compacting concrete more affordable for the construction market by replacing high volumes of portland cement by fly ash. As per is4562000 6, cement is replaced by weight of material. Okamura to achieve durability of structures with low. According to the actual state of knowledge and in accordance with the pn. University of canterbury new zealand, private bag 4800, christchurch, nz. Self compacting concrete was first developed 1988 in order to achieve durable concrete structures. O scc was first developed in japan around the year 1980.
In order to achieve such behavior, the main requirements of fresh scc are filling ability, passing ability and very high segregation resistance. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Selfcompacting concrete civil engineering community. The test results for acceptance characteristics of selfcompacting concrete such as slump flow, vfunnel and lbox are presented. Though the concept originally was thought to be a tool to.
We used similar compositions of scc and cc to study the fresh cement workability. It can be questioned whether the flow behaviour in pipes of. Mar 16, 2016 o self compacting concrete is an innovative concrete that does not require vibration for placing and compaction. Development of scc self compacting concrete scc developed by professor hajime. Symposium on lifecycle civil engineering 2012, wien, austria, isbn. Self compacting concrete scc 1, also known as selfconsolidating concrete. Study on properties of selfcompacting concrete modified with.
Selfcompacting concrete scc for prestressed bridge girders 7. Self compacting concrete scc is a high flowable concrete, which can be placed and compacted without any vibration in complex or dense reinforced formworks. Self compacting concrete scc should present compatible quality and cost with conventional concrete cc. On the other hand, the placement of scc by means of pumping is done with the same equipment and following the same practical guidelines developed for cvc. View selfcompacting concrete research papers on academia.
Compressive strength, concrete, fly ash, self compacting. Daczko 2012 divided the design techniques into two groups. Self compacting concrete, confinements, strength, ductility. Selfcompacting concrete scc should present compatible quality and cost with conventional concrete cc.
However, to date limited research exists exploring the use of coarse rca in scc. It consists of cement, coarse and fine aggregates, water, mineral and chemical admixtures. The ingredients for self compacting concrete are similar to conventional concrete. Assessment of the fresh concrete properties of self compacting. Selfcompacting concrete scc is a highly fluid concrete that does not require any vibration during the placement process 1, 2. Although scc is advantageous its processability in hot climate regions is not well understood and is the main topic of this investigation. In most previous studies on selfcompacting concrete, t400 is used to estimate the flow velocity of selfcompacting concrete. The work presented in this paper seeks to build on the existing knowledge in this area by.
All types of cement conforming to en 197 are suitable. Selfcompacting concrete procedure for mix design paratibha aggarwal, rafat siddique, yogesh aggarwal, surinder m gupta figure 2. This recommendation specifies the performance required of selfcompacting concrete, primarily the selfcompactability, and provide verification and inspection methods. Self compacting concrete is placed or poured in the same way as ordinary concrete but without vibration. The volume of excess paste was determined by experiments. It can be questioned whether the flow behaviour in pipes. 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. Inadequate homogeneity of the cast concrete due to poor compaction or segregation may. Selfcompacting concrete can be defined as the concrete which requires no vibrations and can flow around obstructions, encloses the reinforcement and fills up the formwork completely under its self weight. This thesis addresses numerical simulations of selfcompacting concrete. Jul 27, 2012 the main difference between conventional vibrated concrete cvc and self compacting concrete scc is observed in the fresh state, as scc has a significantly lower yield stress. Investigations for establishing a rational mix design method and self compactability testing methods have been carried out from the. Self compacting concrete scc the latest emerging technology in construction published on jun 12, 2017 scc may not be a newly invented technology in the world.
Parameters influencing pressure during pumping of self. A numerical model for selfcompacting concrete flow through. This recommendation specifies the performance required of self compacting concrete, primarily the self compactability, and provide verification and inspection methods. Selection of the type of cement will depend on the overall requirements for the concrete, such as strength, durability etc. The following components were used to prepare the self compacting test concretes. Mechanical properties of selfcompacting concrete rilem. The flow able fluid nature of selfcompacting concrete makes it a good choice for placing concrete in difficult or under cha. This research work presents properties of selfcompacting concrete after replacement of fine aggregate with powder of waste marble at different percentages 0%, 10%, 20%, 30% 40% and 50%. Lowering the cement content in the concrete mix and replacing it by fly ash, reduces the peak temperature in concrete.