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“Application of CNC waste with Recycled Aggregatein Concrete Mix”DEPARTMENT OF CIVIL ENGINEERINGKAVIKULGURU INSTITUTE OF TECHNOLOGY & SCIENCERAMTEK, NAGPUR (M.S.), PIN-441106GuideShri A. N. Dabhade(Asst. Professor)(B.E. Civil Engineering)Mr. Awanish ShuklaIntroductory Project ReviewonByCNC
Contents1. Introduction2. Objective3. Conclusion of Literature4. Work carried out5. Results & Discussion6. Future Scope7. ReferencesCNC
IntroductionMost countries are spending 8% of their GDP on infrastructure.CNC
Concrete Dependency (2E’s & 2Q’s)CONCRETEEnvironmentEconomyQualityQuantityIn this aspectCNC wasteis mostimportant….!!!CNC
By this we can prepareA Large “Quantity”Of“Economic” ConcreteWithRemarkable “Quality”CNC
Objective To prepare most economic concrete mix; whichfulfils each and every quality specification asdesired.Main Objectives on which the project is based--Workability-Durability-Shrinkage Free-Bleeding Free-Good ProportioningCNC
To understand the current situation and the status ofthe collected CNC waste and recycled aggregateand to understand the availability of these materials. To collect CNC Lathe waste from Sunflag SteelEnterprises Bhandara, Machine Shop of MechanicalDepartment, K.I.T.S. Ramtek, and RecycledAggregate from Kaveri Girls Hostel & ConcreteLab. To study the properties of recycled aggregate, theproperties of the materials have to be examinedthrough various tests. The various tests have beenperformed so as to check the different properties ofaggregate
To prepare a mix design by IS code method.Test is to be performed on M20 cubereplacing NCA with RCA and CNC.Replacing 30%, 50% & 100% NCA by RCAin addition of 1% and 2% CNC.Water cement ratio is taken as 0.50 byconcrete mix design.Test on concrete cube specimens forcompressive strength.
Conclusion of LiteratureLiterature on CNC:- Many researchers used variety of wastes intheir researches ranging from bicycle spokeslathe waste, soft drink bottle caps etc. Researchers used these wastes to carry theexperiments for the analysis of various test
They got variety of results in which atremendous increment in the compressive,tensile and flexural strength were obtainedby addition and different composition of thewastes.
Literatures on RCA:- In various researches ,various proportionsof replacement of natural coarse aggregatewith recycled coarse aggregate was carriedout. It was seen that the results were enhancedwhen 30% and 50% replacement of naturalcoarse aggregate with recycled coarseaggregate was carried out and considerabledesired results were obtained.
Work carried outCharacters Experimental values As per IS : 8112-1989Consistency of Cement 33.0% -Specific gravity 3.15 3.15Initial setting time 125 minutes >30 minutesFinal setting time 300 minutes <600 minutesTest on cement
Property of FineAggregateValue of FineAggregateAs per IS : 383-1970Specific gravitytest2.27% 2.55Bulk Density testkg/m3989kg/m³ 1440 kg/m³Fineness modulustest2.90 _Water absorption 1.30% 2.10%Test on Fine aggregate
Property of aggregate Value of NaturalaggregateAs per IS: 383-1970Specific gravity(IS:2386-1963)2.68 2.74Bulk Densitykg/m3(IS:2386-1963)1482kg/m³ 1600kg/m³Fineness modulus 6.30 _Water absorption(IS:2386-1963)1.20% 0.50%Impact value test 16.32% 30%Crushing value test 21.30% 30%Test on Coarse aggregate:
Property of aggregate Value of Recycled aggregateSpecific gravity 2.77Bulk Density kg/m3 1370kg/m3Fineness modulus 5.55Water absorption 4.3%Impact value test 26.66%Crushing value test 25.6%Test on Recycled aggregate
Procedure for MIX DESIDN(By IS code method) The target mean compressive ( fck ) strength at 28 days isgiven byfck= fck + tSfck=20+1.65x4 = 26.6 MPaWhere,fck = characteristic compressive strength at 28 days.S = standard deviation.t = a statistical value depending on expected proportionof low results (risk factor).
V = absolute volume of freshconcrete, which is equal togross volume (m3) minus thevolume of entrapped air, W = Mass of water (kg) per m3of concrete C = Mass of cement (kg) perm3 of concrete Sc = Specific gravity of cement P = Ratio of FA to totalaggregate by absolute volume fa, Ca = Total masses of FAand CA (kg) per m3 of concreterespectively and Sfa, Sca = Specific gravities ofsaturated, surface dry fineaggregate and coarse aggregatefa= 472.29 Kg/m3Ca= 1222.3 Kg/m3Where,
Particulars Water Cement FineAggregateCoarseAggregateRatio 0.50 1 1.24 3.19“Mix Proportions”
MD : Concrete Mix with Natural Coarse AggregateMD30: Concrete Mix at 30% replacement of NCA with RCAMD50 : Concrete Mix at 50% of NCA with RCAMD100: Concrete Mix at 100% replacement of NCA with RCAWCNC: Concrete Mix without CNC Lathe wasteCNC1: Concrete Mix with 1% CNC Lathe waste (by weight ofconcrete)CNC2: Concrete Mix with 2% CNC Lathe waste (by weight ofconcrete)W/C : Water cement ratioAbbreviations Used
Sr.No.Percentage of CNCLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressive Strength(N/mm2)1 WCNC 370 (370x1000)/22500 16.4417.562 CNC1 375 (375x1000)/22500 16.673 CNC2 440 (440x1000)/22500 19.56Test results of 7 day compressive strength test for MD
Test results of 28 day compressive strength test for MDSr.No.MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressiveStrength(N/mm2)1 WCNC 370 (370x1000)/2250016.4417.562 CNC1 380 (380x1000)/2250016.893 CNC2 390 (390x1000)/2250017.33
Test results of 7 day compressive strength test for MD30Sr.No.MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressiveStrength(N/mm2)1 WCNC 360 (360x1000)/22500 16.0017.782 CNC1 390 (390x1000)/22500 17.333 CNC2 450 (450x1000)/22500 20.00
Test results of 28 day compressive strength test for MD30:Sr.No.MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressive Strength(N/mm2)1 WCNC 500 (500x1000)/22500 22.2317.782 CNC1 540 (540x1000)/22500 24.003 CNC2 560 (560x1000)/22500 24.89
Test results of 7 day compressive strength test for MD50Sr. No. MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressive Strength(N/mm2)1 WCNC 300 (300x1000)/22500 13.3316.602 CNC1 400 (400x1000)/22500 17.783 CNC2 420 (420x1000)/22500 18.67
Test results of 28 day compressive strength test for MD50:Sr.No.MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressiveStrength(N/mm2)1 WCNC 700 (700x1000)/22500 31.1132.752 CNC1 730 (730x1000)/22500 32.503 CNC2 780 (780x1000)/22500 34.66
Test results of 7 day compressive strength test for MD100:Sr.No.MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressiveStrength(N/mm2)1 WCNC 320 (320x1000)/22500 14.1015.192 CNC1 350 (350x1000)/22500 15.373 CNC2 360 (360x1000)/22500 16.10
Test results of 28 day compressive strength test for MD100Sr. No. MixDesignLoad(KN)Calculation CompressiveStrength(N/mm2)AverageCompressive Strength(N/mm2)1 WCNC 400 (400x1000)/22500 17.7718.662 CNC1 420 (420x1000)/22500 18.673 CNC2 440 (440x1000)/22500 19.55
RESULT & DISCUSSION In the experimental study we casted 72 cubeswith various proportions of CNC waste andreplacement of NCA to RCA.It was found that the compressive strength whichwas most suitable was obtained in 30%replacement of NCA to RCA in addition to 2%CNC waste.
14.51515.51616.51717.51818.51919.520WCNC CNC1 CNC27 Day CompresssiveStrength28 Day CompressiveStrength051015202530WCNC CNC1 CNC27 Day CompressiveStrength28 Day CompressiveStrengthCompressive StrengthResults for MD30Compressive StrengthResults for MD
0510152025303540WCNC CNC1 CNC27 Day CompressiveStrength28 Day CompressiveStrength0510152025WCNC CNC1 CNC27 Day CompressiveStrengthSeries 2Compressive StrengthResults for MD50Compressive StrengthResults for MD100
DISCUSSION: The tests on cubes were conducted. The test done is Compressive strength shown inthe above tables with water cement ratio 0.5. The results show that the concrete specimenshave more compressive strength when 50%replacement is done with NCA by RCA.
In addition to that highest results are shownwhen CNC waste is added in 2% by theweight of concrete. This shows a greater scope to use a largeamount of waste (CNC) with thedemolished waste i.e. Recycled aggregate.
05101520253035MD MD30 MD50 MD1007 Day Compressive Strength28 Day compressive StrengthComparative Study for Compressive Strength
FUTURE SCOPEIt acts to be an Environmental savior. Due to lackof dumping sites in the present scenario, so there isneed to save the land, this process leads as thesavior of environment.From the above conclusion this process can beassumed to be the economical process as lesstransportation costs require and also theconstruction cost is less.
To produce and secure a system of salebased packed premixed concrete batches,in which CNC waste and recycled coarseaggregate concrete will be present.
References1. Abbas Hadi Abbas, (2011), “Management of steel solid wastegenerated from lathes as fibre reinforced concrete”, EuropeanJournal of Scientific Research, Vol-No. 50, pp 481-485.2. Dukovski V. And Vrtanoski G. (2005), “Design of Polymer concretemain spindle housing for CNC Lathe”, Achievements in Mechanicaland Materials Engineering, Vol-No. 4, pp 695-698.3. Dr. Prahallada M.C. and Dr. Prakash K.B., (2011), “lathe Machinewaste used in concrete”, International Journal of civil, structural,environmental and infrastructure engineering research anddevelopment, pp 1-7.4. Fong F.K. Winston, Jaime S.K. Yeung and Poon C. S. (2002), “HongKong Experience of Using Recycled Aggregates From ConstructionAnd Demolition Materials In Ready Mix Concrete”, InternationalWorkshop on Sustainable Development and Concrete Technology,pp 267-275.CNC
5. How-Ji Chen, Tsong Yen and Kuan-Hung Chen (2003), “Use ofBuilding Rubbles as Recycled Aggregates”, Cement and ConcreteResearch, pp 125-132.6. Kumutha R., Vijai K. (2010), “Strength of concrete incorporatingaggregates recycled from demolition waste”, ARPN Journal ofEngineering and Applied Sciences, Vol-No. 5, pp 64-71.7. Meddah Seddik Mohammed and Bencheikh Mohamed (2009),“Properties of concrete reinforced with different kinds of industrialwaste fibre materials”, Construction and Building Materials, Vol-No.23, pp 3196-3205.8. Murali G., Vardhan Vivek C.M., Prabu R., Mohammad Z., KhanSadaquath Ali, Mohamed Aarif T. and Suresh T. (2012), “Experimentalinvestigation on fibre reinforced concrete using waste material”,International journal of Engineering Research and Applications, Vol-No. 2, pp 278-283.9. Niranjana G., Dr. Mathew Samson and Dr. Jayabalan P. (2011),“Structural strength enhancement of rigid pavement using wastematerials and fibres”, International journal of Engineering Researchand Applications, Vol-No. 2, pp 212-219.CNC
10. Parashar Ashish Kumar and Parashar Rinku (2012), “The effectof size of fibres on compressive strength of M20 concrete mix”,International journal of Engineering Research and Applications,Vol-No. 2, pp 1232-1236.11. Prasad M.L.V. and Rathish P. Kumar (2007), “Strength StudiesOn Glass Fibre Reinforced Recycled Aggregate Concrete”, AsianJournal Of Civil Engineering of Building And Housing, Vol-No.8, pp 6677-690.12. Shivaraja M., Kandasamy S. and Thirumurugan A. (2010),“Mechanical Strength of fibrous concrete with waste ruralmaterials”, Journal of Scientific and Industrial Research, Vol-No.69, pp 308-312.13. Yaprak Hasbi, Aruntas Huseyin Yılmaz, Demir Ilhami, SimsekOsman and Gokhan Durmus (2011), “Effects of the fine recycledconcrete aggregates on the concrete properties”, InternationalJournal of the Physical Sciences, Vol-No.6, pp 2455-2461.CNC