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IRJET- Effect of Natural Admixture on Mechanical Properties of Fly Ash Mix Concrete
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IRJET- Effect of Natural Admixture on Mechanical Properties of Fly Ash Mix Concrete
1.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1376 Effect of Natural Admixture on Mechanical Properties of Fly Ash Mix Concrete G. Raghavi Sree1 , Dr. K. Rajasekhar2 1P.G Student,Department of Civil Engineering, Siddartha Educational Academy Group of Institutions-Integrated Campus,C.Gollapalli,Chittoor Dist.A.P-517505, India 2Professor, Department of Civil Engineering, Siddartha Educational Academy Group of Institutions-Integrated Campus,C.Gollapalli,Chittoor Dist.A.P-517505, India ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract - Common assets are draining worldwide while in the meantime the created squanders from thebusinessareexpanding considerably. The feasible advancement for development includes the utilization of nonconventional and creative materials, and reusing of waste materials with a specific end goal to remunerate the absenceofcharacteristicassetsandtodiscoverelective ways monitoring the earth. This investigation concentrate on Compressive strength , flexural strength and Bond strength of Conventional Concrete (CC) and Class C fly ash remains mixed solid consolidation with Natural Admixture. Grill hen egg was utilized as Natural admixture (NAD) to consider the impact of NAD with blend extents of 0%,0.25%,0.5%,1% and 1.5% onquality properties. The Class C fly fiery remains was supplanted to bond with different levels of 25%,35%,and45%.NADwassupplanted to fluid and recognized the ideal substitution level of Class C fly cinder and ideal dose of NAD by keeping up the consistent fluid substance 0.55 to accomplished M20 grade concrete. The compressive strength, flexural strength and bond strengthof cementfor both CC and FA cement are thought about. At long last results are inferred that the ideal substitution of Class C fly fiery debris is 25% and ideal measurements of NAD is 0.25% taking into account strength results. Key Words: Natural admixture; Class C fly ash; compressive strength; Flexural strength and bond strength 1. INTRODUCTION The fast development of constructional activities results in increase increment usage. The major drawback in usageofcement in bulk quantity, that ends up in liberation of inexperienced house gas (CO2).The green house gas causes to heating and continues mining and extraction of lime stone ends up in unnecessary issues to surroundings. Therefore researches are concentrate on property materials, during thissituationchemical andmineral admixtureswereintroduced.Beforeinventionof chemical and mineral admixtures our people were use some a lot of natural merchandise like surkhi, burnt, coconut shells, mud, clay, starch, jaggrey, lime and egg. Amount those merchandise broiler hen egg was chosen together of the admixture during this analysis 2. LITERATURE REVIEW Ramesh Babu and Neeraja 1]had revealed thatNAD was actingas accelerator whenaddedtobinderandalsoconcludedthatthe 0.25% was optimum dosage of NAD. Class C fly ash with 0.25% NAD was attained higher strength than that of all FA replaced mixes. Ramesh Babu et al [2] had concludedthatallmechanicalpropertiesofconventionalandClassCflyashblendedconcreteexhibits same trend like compressive strengthat optimum dosage.Hanifi Binici et al. [3]concludedthatreplacementofeggshellpowder in sand leads to decrease in compressive strength and flexural strength, but it exhibits resistance against radiation effect. 3. EXPERIMENTAL STUDY 3.1 Materials Concrete can be made utilizing different source materials. The present studyClassCflyashdebrisand eggwereutilizedtocast the concrete. The accompanying segments talk about constituent materials utilized for assembling concrete. Compound and physical properties of the constituent materials are displayed in this segment. 3.1.1 Cement Ultra tech 53 grade ordinary Portland cement was used corresponding to IS 12269:1987 . The physical and compound properties were recorded below.
2.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1377 Table3.1: Chemical Compounds in cement Particulars Test result Requirement as per IS:12269-1987 Chemical composition % Silica (SiO2) 19.30 % Alumina (Al2O3) 5.78 % Iron oxide (Fe2O3) 4.79 % Lime (CaO) 62.78 % Magnesia (MgO) 0.85 Not more than 6.0% % Sulphuric anhydride (SO3) 2.49 Max. 3.0% when C3A>5.0 Max. 2.5% when C3A<5.0 % Chloride content 0.004 Max. 0.1% Lime saturation factor CaO 0.94 0.80 to 1.02 0.7SO3/2.8SiO2+1.2Al2O3+0.65Fe2O3 Ratio of Alumina/Iron Oxide 1.22 Min. 0.66 TABLE 3.2: PHYSICAL PROPERTIES OF CEMENT Particulars Test result Requirement as per IS:12269-1987 Physical properties Specific gravity 3.16 Fineness (m2/kg) 314.4 Min. 226 m2/kg Soundness Lechatlier expansion (mm) 0.9 Max. 10mm Auto Clave expansion (%) 0.02 Max. 0.08% Setting time (Minutes) Initial 45 Min 30 mints Final 230 Max. 600 mints 3.1.2 Fly ash As per ASTM C 618 (2003), Class C fly fiery remains made from Rayalaseema Thermal PowerPlant(RTPP),Muddanur,Andhra Pradesh was used 3.1.3 Natural admixture egg Grill hen egg was utilized as Natural admixture (NAD), Egg white egg whites and yellowyolk wasthroughlyblendedandadded to concrete. The NAD was supplanted to water at different substitution levels 0%, 0.25%, 0.5%, 1.00% and 1.5% of cementitious material weight by keeping up the fluid to folio proportion (0.55) 3.1.4 Mineral admixture Class C fly fiery remains (FA) was utilized as an added substance as indicated by ASTM C 618. Table 3.3 demonstrates the properties of Class C fly ash remains. Table 3.3: Properties of fly ash Physical properties Test results Specific gravity 2.16 pH 11.37 Moisture content 0.84% Chemical properties Element % CaO 15.01 SiO2 49.45 Al2O3 22.78
3.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1378 Fe2O3 5.62 SiO2 +Al2O3 +Fe2O3 77.85 SO3 1.28 MgO 2.15 Loss on ignition 1.45 3.1.5. Coarse aggregate Crushed rock stones of size 20 mm and 10 mm were used as coarse total. The mass particular gravity was 2.62 in oven dry condition and water assimilation was0.3% of the coarse total 20 mm and 10mm as indicated by IS 2386 (Part III, 1963) were independently. 3.1.6 Fine aggregate Typical stream sand was used as fine total. The particular gravity was 2.62 and water ingestion of the fine total was0.325.The level of the sand was directed by strainer examination as indicated by IS 383 (1970). 4.EXPERIMENTAL PROCEDURE 4.1 Mix design M 20 evaluation of ordinary solid (CC) was outlined according to IS 10262-2009[8]andIS456-2000[7].Thecovetedqualityof M 20 evaluation of CC was around 26.6 MPa following 28 days of curing. ClassCflypowdermixed blendswerereadiedutilizing the composed M 20 evaluation of CC by supplanting the bond with FA at different levels of 0%, 25%, 35% and 45% of CC concrete weight. In both CC and FA mixed solid, NAD was supplanted in water at different measurements of 0%, 0.25%, 0.5%, 1.0% and 1.5% of cementitious material weight by keeping up consistent fluid – folio proportion (0.55) which influences the compressive quality [7]. Here, fluid alludes to water content with orwithouteggsubstitutionandcoveralludestocementitious substance. The configuration blend extents are appeared in Table 4.1 Table 4.1Mix design Sample Notation Cement (Kg) Fly Ash (Kg) Fine aggregate (Kg) Course aggregate (Kg) Water (Lts) % of NAD Quantity of NAD (Lts) C-100_FA-0 360 (100%) 0.00 (0%) 745 1150 197.00 0.00 0.00 196.10 0.25 0.90 195.20 0.5 1.80 195.40 1.00 3.60 191.60 1.50 5.40 C-75_FA-25 270 (75%) 90 (25%) 745 1150 197.00 0.00 0.00 196.10 0.25 0.90 195.20 0.50 1.80 193.40 1.00 3.60 191.60 1.50 5.40 C-65_FA-35 234 (65%) 126 (35%) 745 1150 197.00 0.00 0.00 196.10 0.25 0.90 197.20 0.50 1.80 193.40 1.00 3.60 191.60 1.50 5.40 C-55_FA-45 198 (55%) 162 (45%) 745 1150 197.00 0.00 0.00 196.10 0.25 0.90 195.20 0.50 1.80 193.40 1.00 3.60 191.60 1.50 5.40 4.2 Testing hardened properties of concrete Three cubes size 150 mm were cast and tested for compressive strength for each age and each mix . Three beams of size 700 mm × 150mm × 150 mm were cast and tested for flexural strength and three cylinders of size 150mm dia and 300 mm height were casted by inserting the reinforcement to test the bond strength as shown in Fig.7 for each age and each mix. The average
4.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1379 of three samples was calculated respectivelyforeachproperty. The weightandvolumeofcylindrical specimens weremeasured before compression test and from that unit weight of concrete (γc) was determined for 7, 28 and 56 days of curing. The failue samples were showed in Fig.4.1, Fig4.2 and Fig 4.3 Fig 4.1, 4.2 and 4.3 Compressive strength, Bond strength and flexural Strength 5. RESULTS and DISCUSSIONS The compressive strength of the cubes were appeared in Table 6 and appeared in Fig 10. From the outcomes it is watched, increment in compressive strength with expansion in Class C fly ash remains up to 35% fly ash substitutionat7daysofcuring, subsequently expanding the FA past 35% diminishing in compressive was seen without NAD. The Class C fly fiery remains contains high calcium content that prompts improvement of early strength in Class C fly slag blends than that of CC blends. In CC blends the compressive strength was essentially expanded at 0.25% NADatall theageswhencontrastedand 0.00%NAD dose blend. The 7 days compressive strength of CC with 0.25% is more significant than 28 days outlined strength. It demonstrates that the NAD goes about as quickening agent to get composed 28 days strength of CC at 7 days of curing. Along these lines expanding the NAD measurement diminishing the strength was watched. This is because of overabundance measurement of NAD prompts development air voids and permeable in solid, it can be finished up from diminishing in unit weight. compressive strength was seen at 0.25% NAD measurements for all FA blendsthatismore noteworthythan without NADdose FA blends. This demonstrates NAD includes building up the quality in FA blends following 28 days curing. The blend C-75_FA- 25 blend accomplished higher compressivestrengthat0.25%NADmeasurementthanthatofoutstandingFAblends at56days, which is more noteworthy CC blends. Table 5.1 Compressive strength of concrete cube NAD Quantity 0.00% 0.25% 0.50% 1.00% 1.50% C-100_FA-0 7 Days 17.12 29.88 25.04 21.24 16.03 28Days 28.57 35.93 30.82 27.40 20.17 56Days 32.05 39.10 35.70 32.97 26.05 C-75_FA-25 7 Days 18.57 15.95 15.70 12.08 11.10 28Days 27.37 26.97 22.23 17.23 16.90
5.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1380 56Days 30.92 35.07 32.09 31.58 20.17 C-65_FA-35 7 Days 20.42 15.46 14.95 11.79 10.75 28Days 24.45 22.48 18.97 16.27 15.55 56Days 26.48 28.13 26.90 19.94 17.05 C-55_FA-45 7 Days 19.58 13.43 12.65 10.10 10.15 28Days 22.68 22.04 17.97 14.79 14.19 56Days 24.23 26.68 25.97 21.92 21.41 Figure 5.1 Compressive strength of concrete 5.2 Flexural strength The flexural strength of CC and FA mixed blends were appeared in Table seven and Fig eleven. The flexural strength of CC cement was enlarged with enlargement in age with and while not NAD. The flexural strength of CC mix with zero.25% NAD accomplished higher flexural strength than that of while not NAD, that is like compression. The compressive strength is primary capability of all properties of cement. The expansions at class C flyash remains increments in flexural strength was seen up to thirty fifth fly dross substitution while not NAD dose at sevendays,that'sadditional noteworthythanCCquality.this can be as a result of category C ash rubble impact, it having early strength finding out limit. The reduction in strengthwas seen with expansion of NAD to FA blends at 7 and 28 days. Following 28 days all the FA blends at 0.25% NAD dose accomplished most significant qualities than that of residual doses. The blend C-75_FA-25 with 0.25% NAD blend accomplished most astounding strength than that of CC blend without NAD blend furthermore it is the mostastoundingamongresidual FAblends. The expansion in NAD dose more than 0.25% NAD diminish in quality was seen in all blends following 28 days. At 56 days the CC blends accomplished most noteworthy flexural strength than that of residual FA mixed blendswithoutNAD. From 0.00% NAD to 0.25% NAD measurements all the blends flexural strength was expansions there by expanding the NAD dose diminish in strength was watched. Among all the blends the CCwith0.25%NADblendaccomplishedhigherqualitiesthan that of outstanding blends and remaining NAD measurements. Examines presumed that expansion of NAD enhances the flexural strengthofcement.Expansionofadmixturesorhigher better materials has higher impact on flexural quality of cement. Therelationship b/ncompressivestrengthandflexural strength was appeared in Fig 5.3. From the outcome and Fig 5.2 the flexural strength increments with expansion in compressive strength. Table 5.2 Flexural strength of concrete (MPa) NAD Quantity 0% 0.25% 0.50% 1.00% 1.50% C-100_FA-0 7 Days 3.08 4.09 3.67 3.31 2.79 28Days 4.17 4.49 4.18 3.99 3.52 56Days 4.23 4.72 4.44 4.26 3.79 C-75_FA-25 7 Days 3.19 2.97 2.92 2.63 2.49
6.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1381 28Days 3.91 3.82 3.53 3.29 3.19 56Days 4.07 4.39 4.31 4.09 3.39 C-65_FA-35 7 Days 3.29 2.87 2.79 2.57 2.51 28Days 3.77 3.62 3.41 3.07 2.97 56Days 3.82 3.96 3.89 3.42 3.21 C-55_FA-45 7 Days 3.21 2.63 2.57 2.39 2.29 28Days 3.67 3.49 3.28 3.07 2.81 56Days 3.75 3.92 3.82 3.57 3.31 Figure 5.2 Flexural strength of concrete beam Figure 5.3 Relationship between compressive strength and flexural strength 5.3 Bond strength The bond strength of all the blends was appeared in Table 8 and Fig 13. From the outcomes the bond strength of CC blends increments with expansion in age for every one of the ages with and without NAD. The bond strength of C-100_FA-0 with 0.25% NAD accomplished higher strength than that of without NAD dose, accordingly expanding the NAD measurement the diminishing in bond strength was seen at all the ages. The bond quality of C-100_FA-0 blend with 0.25% NAD was 32.12%, 12.14% and 9.03% higher that of without NAD at 7, 28 and 56 days. Where as in FA mixed blends increment in Class C fly ash remains bond strength increments up to 35% substitution at 7 days without NAD dose and decline in strength was seen with expansion of NAD for all NAD measurements. At 28 days all FA blends, 25% substitution of accomplished higher strength however it is not as much as C-100_FA-0 blends at 28 days. The same abatement in bond strength was seen by expansion of NAD to FA blends at 28 days moreover. At 56 days increment in bond strength was watched for all FA mixed blends. C-75_FA-
7.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1382 25 blend accomplished higher strength at 0.25% NAD than that of without NAD dose.Thatis6.71%higherthanthat ofwithout NAD measurement. It is plainly watched that up to 28days the expansion of NAD abatements the bond strength for Class C fly ash blends, following 28 days of curing the NAD has effetely included being developed of compressive , flexural strength and bond strength. The same expanding pattern was seen in all FA supplantingblendswith 0.25%NADfollowing28days ofcuring. Table 8. Bond strength of concrete (GPa) NAD Quantity 0.00% 0.25% 0.50% 1.00% 1.50% C-100_FA-0 7 Days 6.20 8.20 7.50 6.91 6.00 28Days 8.02 8.99 8.33 7.85 6.73 56Days 8.49 9.26 8.96 8.61 7.65 C-75_FA-25 7 Days 6.46 5.99 5.94 5.21 5.00 28Days 7.85 7.64 7.07 6.40 6.16 56Days 8.20 8.75 8.50 8.29 6.73 C-65_FA-35 7 Days 6.78 5.90 5.80 5.15 4.92 28Days 7.42 7.11 6.53 6.05 5.91 56Days 7.72 7.95 7.76 6.70 6.37 C-55_FA-45 7 Days 6.64 5.49 5.33 4.76 4.78 28Days 7.14 7.04 6.36 5.77 5.65 56Days 7.38 7.75 7.64 7.02 6.77 Figure5.4 Bond strength of concrete 6. CONCLUSIONS The following conclusions have been observed based on the investigation studied on the effect of Natural Admixture (broiler hen egg) on mechanical properties of CC and FA blended concrete. NAD effectively concerned to achieved 28 days designed strength of M20 grade concrete combinedat7daysofcuring with 0.25% NAD dosage. So that NAD can be used as accelerator to enhance the hydration. The flexural strength of CC and FA was increased with 0.25% NAD dosage. The flexural strength of C-75_FA-25 combine earned higher strength than that of remaining FA blended mixes. The bond strength of CC and FA will also increases with increase inNADdosageupto0.25%,therebydecreaseinbond strength indicates 0.25% NAD is optimum dose supported all the strength properties.
8.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 1383 The 25% Class C fly ash can be suggested to get design strength of M20 grade concrete. The NAD will also increases the flexural strength and bond strength of the each CC and FA concrete. Good correlation was found between compressive strength and flexural strength Equations to predict the Flexural strength supported on the compressive strength for fly-ash blended with natural admixture are proposed REFERENCES Ramesh Babu TS, Neeraja D. Effect of natural admixture on fresh propertiesandcompressivestrengthofclasscflyash blended concrete, Asian Journal of Civil Engineering (BHRC), No. 3, 17(2016) 373-84. Ramesh Babu TS, J. Guru Jawahar, P. Venkat Kiran, S. Chiranjeevi, M. Surya Prakesh and Y. Purushotham Reddy. An Experimental study on effect of Natural Admixture on mechanical propertiesofClassCflyashblendedconcrete,Asian Journal of Civil Engineering (BHRC), No. 6, 17(2016) 737-752. Binici H, Aksogan O, Ahmet H, Cinpolat E. Mechanical and radioactivity shielding performances of mortarsmadewith cement, sand and egg shells, Construction and Building Materials, 93(2015) 1145-50. IS 12269. Specification for 53 Grade Ordinary Portland Cement, Bureau of Indian Standards, New Delhi, India, 1987. ASTM C 618. Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, 2003. IS 383. Specification for Coarse and Fine Aggregates from Natural Sources for Concrete, Bureau of Indian Standards, New Delhi, India, 1970. IS 456-2000. Plain and Reinforced Concrete Code for Practice, Bureau Of Indian Standards, New Delhi, India, 2000. IS 10262-2009. Concrete Mix Proportions Guide Line, Bureau of Indian standards, New Delhi, India, 2009. IS: 516-1991. Methods of tests for strength of concrete. Bureau of Indian Standards, New Delhi, India. IS: 5816-1999. Splitting tensile strength of concrete method of test. Bureau of Indian Standards, New Delhi, India.
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