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IRJET- Experimental Study of Concrete with Copper Slag for Partial Replacement of Fine Aggregate
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IRJET- Experimental Study of Concrete with Copper Slag for Partial Replacement of Fine Aggregate
1.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 257 EXPERIMENTAL STUDY OF CONCRETE WITH COPPER SLAG FOR PARTIAL REPLACEMENT OF FINE AGGREGATE S. GOVINDHAN¹, P. PAPITHA² ¹Head of the Department, Department of Civil Engineering, Sembodai R.V Engineering College, Sembodai, Nagappattinam, Tamilnadu-614820 ²PG Scholar, M.E- Structural Engineering, Department of Civil Engineering, Sembodai R.V Engineering College, Sembodai, Nagappattinam, Tamilnadu-614820 -----------------------------------------------------------------------***-------------------------------------------------------------------- Abstract - In order to avoid using natural river sand. An alternative material is proposed to the strength of the concrete by replacing of fine aggregate. Partially by waste material like copper slag which is an environmental waste. To make us of these material without sacrifice the strength and durability of the concrete structure. To strength is measured by use of non-destructive and destructive techniques. The effects of replacing fine aggregate by copper slag on the compressive strength are attempted in this work. This work includes the determination of different properties of locally available copper slag and utilizationofcopperslaginconcrete by replacing it partially by fine aggregate keeping the other parameters constant. Compressive strength of concrete cubes on M20 grade of concrete with constant0.50w/cratio. Copper slag replacement of 0%, 10%, 20%, 30%, 40%, and 50% are used. This experimental study presents the result of compressive strength test on concrete containing copper slag partially replaced byfineaggregate. Theobtainedresultswere compared with those of conventional cement concrete made with Ordinary Portland Cement. Key Words: Copper Slag, Fine Aggregate, M20 Grade, Compressive Strength, Environmental Waste. 1. INTRODUCTION 1.1 GENERAL Many countries are witness a rapid growth in the construction industry which involves the use of natural resources for the development of the infrastructure. Natural resources are depleting world-wide while at the same time the generated wastes from the industry are increasing substantially. River sand, which is one of the constituents used in the production of conventional cement mortar, has become highly expensive and also scarce. The sustainable development for construction involves the use of non- conventional and innovative materials, and recycling of wastes in order to compensate the natural resources and to find alternative ways for conserving the environment. Large amount of industrial wastes or byproducts accumulateevery year in alldeveloping countries. Therefore now a day’s utilization of secondary materials has encouraged in construction field. For the production of cement and concrete very high amount of energy is needed. Around 7% of CO₂releasedtoatmosphereisappearedduring cement production. Harmful effects of concrete by using on environmental can be reduced by producing good and durable concrete by using industrial by products. The presence of copper, alumina,sulphateintheslagwere only traces and harmful. The properties of fine aggregatesat all chemical composition of slag is replacement levels are similar to the presented in table-1 and sieve analysis of specification for sand zone II as per IS:383. High strength concrete has to be designed for higher workability, higher mechanical properties and greater durability than those of conventional concrete. The definition of high strength concrete is continuous to change as advances in concrete technology make it easier to achieve increasing higher strength and greater workability using conventional construction practice. In order to achieve high strength concrete with good mechanical propertiesanddurability, fly ash or silica fume that are considered as waste material are used as one of the main ingredients. The recent research showed that the possibility of utilizingindustrial byproducts as well as other material in the production of normal concrete and high strength concrete, when usedaspartial or full replacement of cement mortar and aggregates or as admixtures. This research study presents the results of experimental work conducted on the performance of high strength concrete mortar made with copper slag as fine aggregate. The effects of admixtures made with copper slag has been discussed. 1.2 COPPER SLAG Copper slag is a byproduct obtained the metal smelting and refining of copper. Copper slag used in this work was brought from Sterlite Industries Ltd (SIL), Tuticorin, and Tamilnadu, India. SIL is produced per day and a total accumulation of around 1.5 million tons. It is a byproduct obtained during the metal smeltingandrefiningofcopper.To produce every ton of copper approximately 2.2-3.0 tons copper slag is generated as a byproduct material. Utilization of copper slag in application such as Portland cement substitution and as aggregates has threefold advantages of eliminating air pollution problems. The countermined copper slag has to be properly treated or washed to meet certain recycling criteria before it can be further used for other application. The products of one ton copper generates approximately 2-3 tons of copper slag.
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 258 Copper slag is the toxic for environment because it contains large amount of heavy metals in their oxide. Separated impurities are collected and removed and various substance are added to purified metal which melt it and enrich it,andin those processes slag is generated again as a byproducts. This type of generated slag depends on the method of cooling of the melted mass on the type of processes metal. The production of granulated slag sand sized grains are created. Due to its composition, this material has excellent hydraulic properties and in the presence of an appropriate will behave in a manner similar to Portland cement. Expanded for any slag is more porous and has a smaller volume than air cooled slag. The current quantity of copper slag is estimated at approximated 2.2 million tons. A large quantity of this material on landfill and its potential as a substitute for traditional material has investigated to carry out research into the possibilities of various applications of slagconstructionprimarilyasaggregateinconcretemixtures. Fig -1: Copper Slag 1.3 BASIC PROPERTIES OF COPPER SLAG The slag is a black glassy andgranular in nature and has a similar particle size range like sand which indicate that it could be tried as replacement for the sand in cementite’sslag mixture. The specific gravity of copper slag is varying between 1.7-1.90 g/cc. which is almost similar to the bulk density. The hardness of gypsum. The pHofaqueoussolution of aqueous extract as per IS 11127 is 11ppm. The slag is conforming to the above standards. The free moisturecontent present in slag was foundtobe less than 1%. The sieve analysisforcopperslaginfersthatthe gradation properties of fine aggregatesatallthereplacement levels are similar to the specification for sand zone II as per IS: 383. The chemical composition of slag is presented on table-1 and sieve analysis report is shown of table-2. The presence of silica in slag is about 26% which is desirable since it is one of the constituents of the natural fineaggregate used to normal concreting operations. The presenceofcopper,alumina,sulphateintheslagwere only traces and harmful. The properties of fine aggregates at all chemical composition of slag is replacement levels are similar to the presented in table-1 and sieve analysis of specification for sand zone II as per IS:383. In the composition of copper slag there is a significant considered responsible for the biggest lack of this material and its limited usage in road, building. Namely copper slag is very expansive and due to this reason the volumecanchange by as much as 10%slagweatheringinatmosphereconditions is considered to be one of the most appropriate methods of eliminating this adverse property. The weathering period varies depending on the application method and the type of slag itself. Therefore it sometimes takes only several months of weathering in atmospheric conditions or occasional sprinkling with water. According to Belgian and Dutch regulations for the use of slag in unbound base course one year of weathering is sufficient whereas there are known data on the need for weathering for as much as 18 months before using the slag as aggregate. Those obstruction are particularly dangerous in the case of freezing which renders large damage to pavement structures. This however unlike expansions cannot be prevented by slag weathering. The grains of this materialare pointed withroughsurface and this is particularly suitable in the case of use in asphalt mixtures forreason ofanincreasinginadhesivenessbetween the pavement and wheels. The big angle of internal friction (40-45) contributes to big stability of materials and CBR value of up to 200%. Copper slag belongs to medium alkaline material with pH values 6.6-7.2. 1.4 SCOPE The scope of the work includes the studies on the following aspects of cement mortar and cement concrete. Evaluation of copper slag based on cement mortar in brick masonry construction. The percentage of copper slag usedforreplacementof river sand are 0%, 10%, 20%, 30%, 40%, 50%. Cement sand mortar joint thickness of 10 and 15mm. Plaster ability of use of copper slag for partial replacement material for river sand. Use of copper slag as replacement material for river sand in cement concrete. 1.5 OBJECTIVES Copper slag has also gained popularity in the building industry for use as a fill material. Used copper slag in place of sand during concrete construction.
3.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 259 Copper slagcanalso use asa buildingmaterialformed into blocks. It is widely used in the sand blasting industry and it has been used in the manufacture of abrasive tools. Copper slag is used as an abrasive media to remove rust, old coating and other impurities in dry abrasive blasting due to its high hardness. 2. MATERIAL, METHODOLOGY AND TESTING 2.1 MATERIALS 2.1.1 CEMENT Copper slag is used as an abrasive media to remove rust, Cement is a well-known building material has occupied an indispensable place in construction works. Cement is an extremely ground material having adhesive ingredients. It is obtained by burning together, in a definite proportion, a mixtureof ingredients. It is obtained by burning togetherina definite proportion, a mixture of naturally occurring argillaceous and calcareous, cooled and ground to the required the required fineness to producematerialknownas cement. In general cement is a binder a substance that sets and hardens independently and can bind other materials together. The word `cement` is used to describe masonry resembling modern concrete that was made from crushed rock with burnt lime as binder. Ordinary Portland Cement was used for casing concrete. This cement is the most widely used one in the construction industry in India. The grade of cement is 53 with specific gravity of 3.15. The initial time and final setting time were found to be 30min and 600min respectively. 2.1.2 AGGREGATE These are chemically inert, solid bodies held together by the cement. Aggregates come in various shapes, sizes and material ranging from fine particle of sand to large rocks. Because cement is the most expensive ingredients in making concrete, it is desirable to minimize the amount of cement used 70%-80% of the volume of concrete is aggregate keeping the cost of the concrete low. Generally flat and elongated particles are avoided or are limited to about 15% by weight of the total aggregate. Unit weight measures the volume that graded aggregate and the voids between them will occupy in concrete. The void content between particles affects the amount of cement paste required for the mix. Selecting equal sizes of well gradedaggregatesreducethe void content. Absorption and surface moisture of aggregate are measured while selecting aggregate because the internal structure of aggregate is made up of solid material and voids that may affect the water cement ratio. 2.1.3 AGGREGATE 2.1.3.1 FINE AGGREGATE Fine aggregate used for concrete should be properly graded to give minimum void ratio and be free from deleterious material like clay, slit content and chloride contamination etc. Hence grading of fine aggregate is relatively different from that in normal concrete. Grading of fine aggregate should be such that it does not cause increase in water demand for the concrete and should give maximum voids so that the fine cementations particles to fill the voids. Hence it is desirable to use the coarser variety of fine aggregate having a high fineness modulus for making workable and strong concrete. The fine aggregatehaving are taken in saturated surface dry condition. 2.1.3.2 COARSE AGGREGATE Local aggregate comprising 20mm, and less than 20mm coarse aggregates in saturated surface dry condition, were used. The coarse aggregates were crushed granite type aggregates. Coarse aggregatewere obtained in crushed from majority of the particles were of granite type. The quality is tested using impact test. 2.1.3.3 COPPER SLAG The copper slag used inthisstudyhaveglassyappearance and black in color. It having the specific gravity of 3.68 and the compacted unit weight as 8.75 KN/m3. The particle size of the copper slag is similar to the river sand i.e. sieve size from 4.75mm to 75 micron. The tests whichconducted on riversandisalsocarriedon copper slag. Table -1: Physical properties of copper slag Physical properties of copper slag Colour Black Specific gravity 3.68 Appearance Glassy Compacted unit weight (KN/m3) 8.75 Absorption 5% Table -2: Chemical properties of copper slag Chemical properties of copper slag Iron (Fe2O3) 68.29% Silica dioxide (SiO2) 25.84% Calcium oxide (CaO) 0.15% Aluminum oxide(Al2O3) 0.22% Iron (Fe2O3) 68.29%
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 260 2.1.4 WATER It is the key ingredient mixed with cement, forms a paste that binds the aggregate together. The water causes the hardening of concrete through a process called hydration. Hydration is a chemical reaction in which the major compound in cement form chemical bonds with molecules because the water to cement ratioisthemostcriticalfactorin the design of perfect concrete. Excess of water reduces strength and workability of concrete. Portable tap water available in the plant conforming to the requirements of IS456-2000 was used for casting concrete & curing the specimens. 2.2 METHODOLOGY FLOW CHART Chart -1: Flow chart 2.3 TESTS 2.3.1 TESTS ON FINE AGGREGATE In this project, the river sand, which was available in saturated surface dry condition was used as fine aggregate and the following tests were carried out on sand as per IS:2386-1968(iii): Sieve analysis Density Specific gravity Water absorption 2.3.2 TESTS ON COARSE AGGREGATE The coarse aggregate are tested for the following Impact value Sieve analysis Density Specific gravity Water absorption 2.3.3 TESTS ON COPPER SLAG The copper slag is tested separately for the following Sieve analysis Density Specific gravity Water absorption SIEVE ANALYSIS TEST Sieve analysis helps to determine the particle size distribution of the coarse and fine aggregate. This is done by sieving the aggregates as per IS: 2386 (part I) 1963. In this we use different sieves as standardized by the IS code and then pass aggregate through them and collect different sized particles left over different sieves. DENSITY The density of both fresh and hardened concrete is of interest to the parties involved for numerous reasons including its effect on durability, strength and resistance to permeability.Hardenedconcretedensityisdeterminedeither by simple dimensional check followed by weighing and calculation or by weight in air water buoyancy method. SPECIFIC GRAVITY TEST Purpose This test is performed to determined specific gravity of material by using a pycnometer.Specificgravityistheratioof the mass of unit volume of material at stated temperature to the mass of same volume of gas free distilled water at the stated temperature.
5.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 261 Standard reference IS: 2720 (part 3) 1980, first revision – standard test for specific gravity of material is used as reference for testing. Significance The specific gravity of a material is used in the phase relationship of air water and solid in the given volume of material. Specific gravity = W₀ = weight of sample material,g=Wps-Wp WA = weight of pycnometer filled with water WB = weight of pycnometer filled with water and material. WATER ABSORPTION This process is particularly important on concrete for durability. Absorption capacity is a measure of porosity of a material. It is also used as a correlation factor in determination of free moisture by oven dry method. The absorption capacity is determined by finding the weight of surface dry sample after it has been soaked for 24 hours and again finding the weight after sample has been dried in an oven. The difference in weight expressed as a percentage of dry sample weight. Water absorption = (increased weight in kg/weight of specimen in kg) ×100 3. TEST RESULTS 3.1 SPECIFIC GRAVITY TEST 3.1.1 COPPER SLAG Instrument used = Pycnometer Material used = Copper slag Observations: 1. Weight of pycnometer (W1) = 630 g 2. Weight of pycnometer + copper slag (W2) =1330g 3. Weight of pycnometer + full water + copper slag (W3) =2070g 4. Weight of pycnometer + full water (W4) =1560g Specific gravity = = G = 3.68 3.1.2 FINE AGGREGATE Instrument used = Pycnometer Material used = Fine aggregate Observations: 1. Weight of pycnometer (W1) = 630 g 2. Weight of pycnometer + Fine aggregate (W2) = 950 g 3. Weight of pycnometer + full water + Fine aggregate (W3) =1560g 4. Weight of pycnometer + full water (W4) =1360g Specific gravity = = G = 2.68 3.1.3 COARSE AGGREGATE Instrument used = Pycnometer Material used = Coarse aggregate Observations: 1. Weight of pycnometer (W1) = 630 g 2. Weight of pycnometer + Coarse aggregate (W2) = 1010 g 3. Weight of pycnometer + fullwater+Coarse aggregate (W3) = 1640 g 4. Weight of pycnometer + full water (W4) = 1395 g Specific gravity = = G = 2.80 3.1.4 CEMENT Instrument used = Pycnometer Material used = Cement
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 262 Observations: 1. Weight of pycnometer (W1) = 630 g 2. Weight of pycnometer + Cement (W2) =1080g 3. Weight of pycnometer + kerosene + Cement (W3) =1600g 4. Weight of pycnometer + kerosene (W4) =1263g 5. Specific gravity of kerosene = 0.79 Specific gravity = = G = 3.15 3.2 SIEVE ANALYSIS 3.2.1 COPPER SLAG Instrument used = Sieve Material used = Copper slag Weight of material = 500 g Table -3: Sieve analysis on Copper slag IS Sieve Size Weight retained (g) % of weight retained Cumulative % retained % of passing 4.75 mm 32 6.4 6.4 93.6 2.36 mm 58 11.6 18 82 1.18 mm 126 25.2 43.2 56.8 600 μ 98 19.6 62.8 37.2 300 μ 94 18.8 81.6 18.4 150 μ 78 15.4 97 3 Pan 16 3 100 0 Fineness modulus = 504/100 = 5.04 3.2.2 FINE AGGREGATE Instrument used = Sieve Material used = Fine aggregate Weight of material = 1000 g Table -4: Sieve analysis on Fine aggregate IS Sieve Size Weight retained (g) % of weight retained Cumulat ive % retained % of passing 4.75 mm 0.01 10 1 99 2.36 mm 0.06 70 7 93 1.18 mm 0.36 430 43 57 600 μ 0.27 700 70 30 300 μ 0.19 890 89 11 150 μ 0.09 980 98 2 Pan 0.02 1000 100 0 Fineness modulus = 408/100 = 4.08 3.2.3 COARSE AGGREGATE Instrument used = Sieve Material used = coarse aggregate Weight of material = 2000 g Table -5: Sieve analysis on Coarse aggregate IS Sieve Size Weight retained (g) % of weight retained Cumulative % retained % of passing 125 0 100 0 100 100 0 100 0 100 75 0 100 0 100 50 0 100 0 100 40 0 100 0 100 25 730 63.5 36.5 63.5 12.5 2000 0 100 0 10 2000 0 100 0 Fineness modulus = 236.5 / 100 = 2.365 3.3 WATER ABSORPTION TEST 3.3.1 FINE AGGREGATE Table -6: water absorption of fine aggregates Sample no. Weight of oven dried specime n (W1) Kg Weight of saturate d specime n (W2) Kg Weight of absorbe d water W3=W2- W1 Kg % of water absorpti on =(W3/W 1)×100 1 0.995 1.01 0.015 1.5
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 263 3.3.2 COARSE AGGREGATE Table -7: water absorption of Coarse aggregates Sample no. Weight of ovendried specimen (W1)Kg Weight of saturated specimen (W2)Kg Weight of absorbed water W3=W2- (W1)Kg % ofwater absorptio n =(W3/ W1)×100 1 1.166 1.172 0.006 0.51 3.3.3 COPPER SLAG Table -8: water absorption of Copper Slag Sample no. Weight of oven dried specimen (W1) Kg Weight of saturated specimen (W2) Kg Weight of absorbed water W3=W2- W1 Kg % of water absorption =(W3/W1) ×100 1 0.960 1.380 0.42 0.4 3.4 COMPRESSIVE STRENGHT TEST ON CONCRETE CUBE (M20) FORMULA USED Compressive strength = (load/area) N/mm² 3.4.1 Compressive strength for 7 days Table -9: Compressive strength after 7 days TRIAL CONCRETE TRIAL LOAD IN (KN) COMPRESS ION STRENGT H (N / mm²) AVERAGE COMPRESSI ON STRENGTH (N / mm²) CC Conventional Concrete 467 470 467 20.77 20.89 20.74 20.80 CS1 10% Copper Slag 470 471 471 20.88 20.94 20.94 20.92 CS2 20% Copper Slag 473 482 485 21.00 21.40 21.54 21.30 CS3 30% Copper Slag 513 518 513 22.80 23.00 22.80 22.90 CS4 40% Copper Slag 482 485 484 21.40 21.54 21.50 22.48 CS5 50% Copper Slag 438 440 442 19.48 19.54 19.56 19.56 Therefore CS3 have a better strength when compared with others after 7 days 3.4.2 Compressive strength for 28 days Table -10: Compressive strength after 28 days TRIAL CONCRETE TRIAL LOAD IN (KN) COMPRESS ION STRENGT H (N / mm²) AVERAGE COMPRESSI ON STRENGTH (N / mm²) CC Conventional Concrete 649 642 646 28.84 28.54 28.73 28.70 CS1 10% Copper Slag 755 760 763 33.54 33.78 33.89 33.73 CS2 20% Copper Slag 807 808 830 35.87 35.90 36.87 36.21 CS3 30% Copper Slag 853 853 858 37.89 37.90 38.14 38.54 CS4 40% Copper Slag 895 898 913 39.78 39.89 40.56 40.28 CS5 50% Copper Slag 821 830 829 36.50 36.89 36.83 36.74 Therefore CS3 have a better strength when compared with others after 28 days 3.4.3 RESULTS FOR COMPRESSION TEST Table -11: Compression test results After 7 & 28 days TRIAL Mix 7 Days 28Days CC Conventional Concrete 20.80 28.70 CS1 Copper Slag 10% 20.92 33.73 CS2 Copper Slag 20% 21.30 36.21 CS3 Copper Slag 30% 22.90 38.54 CS4 Copper Slag 40% 21.48 40.28 CS5 Copper Slag 50% 19.56 36.74 3.4.4 COMPRESSION STRENGTH AFTER 7 DAYS 7& 28 DAYS Chart-2: Compression strength results
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 264 3.5 Cost Analysis Cost analysis is the very important factor to be considered, while analyzing the project. The cost analysis for various mixes per m3 is shown in Table no 4.6 According to that, the cost for reference concrete mix specimen took Rs 5817.4. perm3. Replacing 10%, 20%, 30%, 40%, 50% of copper slag in sand, it cost should be low when compared with “R”. Table -12: Cost of Material Materials Quantity Rate in “ ” Cement 1 bag (50 kg) 420 Copper slag 1bag (50 kg) 150 Fine aggregate per cft 120 Coarse aggregate per cft 110 where, 1 unit = 100 cft 1 unit = 2830 kg Table -13: Rate of material per “kg” Materials Rate in “ ” Cement 8.5 Copper slag 3.0 Fine aggregate 1.5 Coarse aggregate 1.4 Table -14: Total Cost of Materials for M20 design mix concrete (1:1.53:3.45) per m3 Chart-3: Percentage of improvement of cost Analysis 4. CONCLUSION Based on the test results obtained from the experimental program of this work the following major calculations are arrived from workability, compressive strength and cost analysis. 4.1 WORKABILITY TEST Slump Cone Test From the workability test results, slump value slightly decreases for concrete mixes with Copper slag when compared with reference concrete mix (R). After 7 days curing From the experimental test results, the compressive strength of concrete mix of cube having 30% of copper slag (CS3) has the higher strength of 22.90Mpa. After 28 days curing From the experimental test results, the compressive strength of concrete mix of cube having 40% of copper slag (CS4) has the higher strength of 40Mpa. By analyzing its cost and strength parameters concrete mix having 40% replacementof cement by copper slag (CS4) is comparatively more economical. 4.2 COST ANALYSIS By analyzing its cost and strength parameters concrete mix having 40% replacement of Sand by Copper slag (CS4)is comparatively more economical. From workability, strength test and cost analysis, it is found those concrete mix with 40% replacement of Sand by Copper slag give better resultand henceusedtoconstruction purpose.
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 265 REFERENCES [1] International journal of IT, Engineering and Applied Science Research (Volume 2, No.4, April 2013). [2] Leonardo Journal of Science, (Issue 23, July – December 2013) Research article ISSN 1583 – 0233. [3] International Journals of Current Engineering and Technology, ISSN 2277 – 4106. [4] International Journal of Energy and environmental Engineering 2013. [5] Journal of Civil Engineering and Construction Technology (Volume 3, December 2012), ISSN 2141 – 2634. [6] AS,./Asian Journal of Civil Engineering (Building and housing), (Volume 7, 2006). [7] Journal of Wuhan University of technology, Sept – 2010. [8] Chavan, et al, International Journal of Advanced Engineering Research and Studies E-ISSN 2249-8974. [9] BIS:383 – 1970, “specification for coarse and fine aggregates from natural sources for concrete”. [10] IS 456 – 2000, “Indian Standard code of Practice for plain and reinforced concrete,” Indian Standard Institution, New Delhi.
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