MECHANICAL AND RHEOLOGICAL PROPERTIES OF FIBER REINFORCED SELF COMPACTING CONCRETE WITH ALCCOFINE Arun Raja.L 1, Dr. M.

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1 MECHANICAL AND RHEOLOGICAL PROPERTIES OF FIBER REINFORCED SELF COMPACTING CONCRETE WITH ALCCOFINE Arun Raja.L 1, Dr. M.Shahul Haeed 2 1 Assistant Professor, 2 Professor Departent of Civil Engineering, P.S.R Engineering College, Sivakasi, India Abstract Self-Copacting is a newly developed concept in which the ingredients of the concrete ix are proportioned in such a way that it can flow under its own weight to copletely fill the forwork and passes through the packed reinforceent without segregation and self consolidate without any echanical vibration. Efforts for iproving the perforance of concrete over the past few years suggest that ceent replaceent aterials such as Mineral adixtures can iprove the strength and durability characteristics of concrete. Alccofine is pozzolanic aterial and the ultrafine particles of alccofine provide better workability, strength as well as econoical one. An experiental investigation was carried out to study the effect of Alccofine on fiber reinforced self copacting concrete. SCC ixes incorporating different percentages (%, 1%, 2%, % and 4%) of alccofine by weight of ceent along with 1% of steel fiber. Super plasticizer Conplast SP4 was used to aintain workability with constant Water-ceent ratio. Several tests such as Slup flow, V-funnel, L-box, U-box, J-ring tests are carried out to check the rheological properties of concrete. Strength properties was deterined such as copressive, split tensile and flexural strength test. This is done to deterine the efficiency and optiu percentage of replaceent at which axiu strength is achieved. Keywords: SCC, Alccofine, steel fiber, Rheological properties, Strength characteristics. I. INTRODUCTION Self-copacting concrete (SCC), is defined as the concrete which can be placed and dense into every corner of forwork, purely by eans of its self-weight, by eliinating the need of either external energy input fro vibrators or any type of copacting effort. Self Copacting has been developed in Japan to iprove the durability and unifority of concrete in 1988 by Okaura and Ozawa. The ix coposition is chosen to satisfy all perforance criteria for the concrete in both the fresh and hardened states. Self copacting concrete is a concrete which flows by its own weight. So it does not requires copaction at site or concrete plants. To achieve this, ineral adixtures and super plasticizers, viscosity odifying adixture are used in ix as cheical adixtures for design of concrete. The ain difference between conventional concrete to self copacting concrete is the pore value in concrete ass i.e. highly eliinated pores. In this regards, ass of fine aggregate is typically equal or ore copare to coarse aggregate. And selection of coarse aggregate size also gives ipact on requireent of self copacting. There are any advantages of using SCC especially when the aterial cost is iniized which include, Reducing the construction tie and labour cost, Eliinating the need for vibration, Reducing noise 2

2 pollution, Iproving the filling capacity of highly congested structural eber. II. MATERIALS Experiental progra has been designed to provide sufficient inforation for ascertaining the quality of Alccofine based reinforced self copacting concrete. To evaluate the behavior of Alccofine based reinforced self copacting concrete, both echanical strength and durability aspects have been studied in this investigation. A. Ceent Ordinary Portland ceent- grade have used in exaination. The ceent was tested according to IS 41:1988. It confired to IS 12269:198. Its Properties is given in Table 2.1. B. Fine Aggregate The fine aggregate used in the experiental investigation was natural river sand confiring to Zone II of IS Sand used in the work which has particle size less than 4.. C. Coarse Aggregate Crushed granite aggregate particles passing through 12. and retained on 1 I.S sieve used as the natural aggregate which et the grading requireent of IS D. Alccofine ALCCOFINE 12 is a particularly processed product based on slag of high glass content with high reactivity obtained through the process of controlled granulation. ALCCOFINE 12 have used conforing to ASTM C E. Steel Fiber Steel fibers can iprove the copressive strength, tensile strength and flexural strength of concrete. It is also enhance the durability properties of concrete. The criped steel fibres are used in this study. The length of the fibre is 1 and the aspect ratio is 2. The shape of the fibre helps in better bonding with the concrete. F. Super Plasticizer Generally super plasticizers are used to iprove the workability and reduce water content. According to this the super plasticizer Conplast SP 4 is a high range water reducing agent. There are difficulties and liitations to obtain high workability in the field for a given set of conditions. and Chloride content of super plasticizer are 1.22 to 1.22 at ºC and Nil as per IS: 46 respectively. The test data deterined fro the aterials are as follows, Table 2.1: Properties of Materials used S.No Nae of Properties the of aterial aterial Result.16 Fineness 1. OPC grade 2.. Fine aggregate Coarse aggregate 4. Alccofine odulus.6% Consistency 2% Initial setting tie in Final setting tie 1 hrs. 2.6 Water absorption.8% Fineness odulus 4.8 Bulk density kg/ 2.6 Water absorption.6% Fineness odulus 84 Bulk density 162.1kg/ Ipact test 1%.1 Bulk density 6 kg/ Particle size <µ III. MIX PROPORTION The very first step to assure the flow requireent of SCC is to deterine the optiu dosage of alccofine and super plasticizer. Various ixes were prepared and tested to satisfy the EFNARC guidelines. Finally a ix is chosen which gave fulfilling

3 fresh properties. The addition of different percentage of adixtures would be done in this ix. The optiu dosage of alccofine is % and 1.% of super plasticizer and 1% of steel fiber added to each ix. The ix proportion was done based on the EFNARC guidelines. The ix design was carried out for M4 noral grade of self copacting concrete with alccofine as partial replaceent of ceent with a fraction of %, 1%, 2%, % & 4%. Mix Ratio WAT ER CEME NT FINE AGGREG ATE COARSE AGGREG ATE l/ kg/ 88 kg/ 841 kg/ Cobinations of ixes label Explanations SCC noinal ix SCC1 Noinal ix + 1% fiber SCC2 1% alccofine SCC 2% alccofine SCC4 % alccofine SCC 4% alccofine IV. EXPERIMENTAL WORKS A. Fresh properties To study the fresh concrete properties of self-copacting concrete based on the paraeters defining the fresh concrete. Many different test ethods have been developed in attept to characterize the property of Self- Copacting concrete. Particulars Filling Ability Passing Ability Test ethods Slup flow(diaeter) Slup flow(tie) L-box, J-Ring, U- box Segregation V-funnel Resistance According to EFNARC, a slup flow diaeter varies fro 6 to 8 is acceptable for SCC. In slup flow ability and segregation resistance can be also resolute. Apart fro slup flow L-Box test, U-Box test and V-Funnel test are also perfored to evaluate flow ability, passing ability stability of SCC. The L-Box ratio is in range of The V-Funnel tie ranges fro 8 to 12 seconds. B. Mechanical properties All the ixes were tested for various hardened properties like copressive strength, flexural strength & Split Tensile Strength test as per Indian Standards. The six different cobination ixes were prepared including conventional for testing. In this investigations, Speciens prepared such as cube size is 1X1X1, cylinder size is X1 and pris (X1X1 ) for each cobinations. The testing was done on speciens after 28 curing. All tests was repeated for three speciens and average value was taken as the echanical strength. 1. Copressive Strength In this investigation, the cube specien of size 1 x 1 x 1 were cast, cured and tested in accordance with BIS: (ethod of test for test of concrete). The testing was done on copressive testing achine of 2kN capacity. 2. Split Tensile Strength The objective of this is to find the splitting tensile strength of the concrete cylinders. This cones under indirect tension test ethods. A concrete cylinder of size 1 diaeter and height was subjected to the action of the copressive forces along two opposite edges. The test was conducted using copressive testing of 2kN capacity. Horizontal Tensile Stress = 2P/ DL Where, P = Copressive load on the cylinder. L = Length of cylinder. D = Diaeter of cylinder.. Flexural Strength Flexural tests were conducted on beas of size of 1 x 1 X subjected to two point loading at 28 in UTM. The axiu load applied to the specien shall be recorded and the flexural strength of concrete expressed as the odulus of rupture (fb) is calculated. Modulus of rupture fb = Pl / 2bd 2 4

4 V. RESULT AND DISCUSSION 1. Fresh properties The rheological properties of self-copacting concrete are predicted by slup flow (diaeter, tie), V-funnel, L-box, u-box and J-ring. The values are given below, Table.1: Fresh properties of SCC Workability Values Testing Methods Slup Flow(Di aeter) Slup Flow(T ie) V- Funn el L-Box U- Box J- Rin g Units Perissi ble SCC (Control Se c Se c SCC1 6. SCC SCC SCC SCC Copressive and Split Tensile Strength The Copressive and Split Tensile Strength of self copacting with various percentage of alccofine replacing for ceent and with or without steel fiber. These results are given in table. Table-.2: Copressive and Split tensile strength of SCC Split Copressive Tensile Strength Strength Label SCC SCC SCC SCC SCC SCC copressive strength SCC SCC1 SCC2 SCC SCC4 SCC Days 28 Days Fig-.2: Copressive strength of Self Copacting Fro the test results, the copressive strength obtained for the SCC1 is greater than the SCC (noinal) at 28. The copressive strength for % of alccofine (48.1MPa) is higher than the other replaceent ixes also control ix (SCC). The result show that for all ages, the alccofine ranging fro 1%, 2%, % and 4% yields higher copressive strength when copared to conventional concrete ix. Beyond that there is a decrease in strength for 4% of replaceent alccofine. Fig-.1: Fresh properties of Self Copacting

5 Split Tensile Strength Fig-.: Split tensile strength of Self Copacting Fro the test results, the Split Tensile strength obtained for the SCC1 28 is greater than the SCC (noinal). The Split tensile strength for % of alccofine (4.11MPa) is higher than the all the replaceent ixes also control ix (SCC). The result show that for all ages, the alccofine ranging fro 1%, 2%,% and 4% yields higher tensile strength when copared to conventional concrete ix. Beyond that there is a decrease in strength for 4% of alccofine replaceent.. Flexural Strength The flexural Strength of self copacting with various percentage of alccofine replacing for ceent and with or without steel fiber. These results are given in table. Table-.: Flexural strength of SCC S.No Label 2 28 Days 1 SCC. 2 SCC1.6 SCC2.6 4 SCC.8 SCC SCC 8.2 Flexural strength at 28 Fig-.4: Flexural strength of Self Copacting Fro the test results, the Split Flexural strength obtained for the SCC1 28 is greater than the SCC (noinal). The Split flexural strength for % of alccofine (8.12 MPa) is higher than the all the replaceent ixes also control ix (SCC). The result show that for all ages, the alccofine ranging fro 1%, 2%,% and 4% yields higher tensile strength when copared to conventional concrete ix. Beyond that there is a decrease in strength for 4% of alccofine replaceent. VI. CONCLUSION The following conclusions are drawn for feasibility study conducted on reinforced self copacting concrete with alccofine as partial replaceent of ceent includes, The conclusion based on the liited observations fro the present investigation on study of copressive, split tensile and flexural strength of the concrete ade using alccofine as partial replaceent of ceent with steel fiber (1%) and constant dosage of super plasticizer (1.%). The replaceent level of alccofine ranging fro 1%, 2% and % yields higher copressive strength than the conventional concrete ix. Beyond that there is a decrease in the copressive strength of concrete by replacing 4% of alccofine. The present investigation has shown that it is possible to achieve self copaction with different percentage of alccofine by the results of slup flow, J - ring, L - box, U box and V - funnel. The fiber inclusion reduced the fluidity, but presence of alccofine enhance the flow properties. Although results obtained fro all of the ixes satisfy the lower suggested by EFNARC, all ixes had good flow ability and possessed self-copaction characteristics. The addition of steel fiber increases the copressive strength, split tensile strength and flexural strength that is shows the results of SCC1 copared to the noinal concrete ix. Copressive strength, split tensile strength and flexural strength variation for the replaceent of ceent to a level of % alccofine indicate as an optiu replaceent level. The observed axiu strength in copression, tension and flexural was 48.1MPa, 6

6 4.11MPa and 8.12MPa respectively at 28. The addition of alccofine in SCC iproves icrostructure of concrete that also helpful to enhance all echanical properties of concrete. References [1] The European Guidelines for Self Copacting ay 2 [2] Goodier CI et al, Developent of Self copacting concrete journal of Proc ICE struct Build 2; 16(4):4-14. [] Shaikh Mohd Zubair et.al, Experiental Investigation On Effect Of Mineral Adixtures On High Perforance With Various W/B Ratios Journal of IJIRT, Volue: 4 Issue: 8, August-21. [4] Shahul Haeed, M., Sekar, ASS., Saraswathy V, (212) Strength and pereability characteristics study of selfcopacting concrete using crusher rock dust and arble sludge powder, Arabian Journal for Science and Engineering,, volue, issue, pages [] Shahul Haeed, M., Saraswathy, V., Sekar, ASS., (21) Rapid Chloride Pereability Test on Self Copacting High Perforance Green ndt. Net. [6] Shahul Haeed, M., Sekar, ASS., (21) Self copaction high perforance green concrete for sustainable developent Journal of Industrial Pollution Control volue 26, issue (1), 49-. [] Arjun B et.al, Experiental Study on Developent of Noral Strength and High Strength Using Alccofine International Research Journal of Engineering and Technology (IRJET) Volue: 2 Issue:, Aug-21. [8] Dr. V. M. Mohitkar et al, Effect of Mineral Adixture on Fresh and Hardened Properties of Self Copacting International Journal of Innovative Research in Science, Engineering and Technology,Vol. 2, Issue 1, October 21 [9] Prince Arulraj G et al, Developent of Self Copacting with Mineral and Cheical Adixtures An International Journal (ESTIJ), ISSN: , Vol.2, No.6, 212. [1] Osan Gencel et.al, Workability and Mechanical Perforance of Steel Fiber- Reinforced Self-Copacting with Fly Ash Journal of Coposite Interfaces 18 (211) [11] Vengadesan et al, Experiental Study on Flexural Behavior of Self Copacting using Steel Fiber International Journal of Engineering Research & Technology (IJERT),Vol. Issue 6, June [12] Er.GulzarAhad et al, Characteristic Properties Of Steel Fibre Reinforced With Varying Percentages Of Fibre International Journal of Innovative and Applied Research (216), Volue 4, Issue (6): [1] M.Pajak, T.Ponikiewski, Flexural Behaviour of Self Copacting With Different Types Of Steel Fibers Journal of Construction and Building Materials 4 (21) [14] Vinayak B et al, Perforance of Self Copacting High Strength Fiber Reinforced (SCHSFRC) Journal of Mechanical and Civil Engineering, Volue, Issue 4 ( 21). [1] Raghu. H et al, FibreReinforced Self- Copacting A Review International Journal of Eerging Technology and Advanced Engineering, Volue 6, Issue 1, January