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Marble powder

Leaving the waste materials to the environment directly can cause environmental problem. Hence the reuse of waste material has been emphasized. Waste can be used to produce new products or can be used as admixtures so that natural resources are used more efficiently and the environment is protected from waste deposits. Marble stone industry generates both solid waste and stone slurry. Whereas solid waste results from the rejects at the mine sites or at the processing units, stone slurry is a semi liquid substance consisting of particles originating from the sawing and the polishing processes and water used to cool and lubricate the sawing and polishing machines. Stone slurry generated during processing corresponds to around 40% of the final product from stone industry. This is relevant because the stone industry presents an annual output of 68 million tonnes of processed products. Therefore the scientific and industrial community must commit towards more sustainable practices. There are several reuse and recycling solutions for this industrial by-product, both at an experimental phase and in practical applications. These industrial wastes are dumped in the nearby land and the natural fertility of the soil is spoiled. The physical, chemical and mechanical properties of the waste are analyzed.

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Marble powder

  1. 1. BY P.ROHITH S.NIHARIKA A.RANJITH B.AKSHAY P.JEEVAN Partial Replacement of Cement with Marble Powder
  2. 2.  Objective of the project Introduction Nominal Mx Design Test Results and Graphs Conclusion Contents
  3. 3. Composition of Marble powder
  4. 4. Objective The objective of the project is to study the behavior of marble dust concrete for water curing. Also we are interested to study the compressive strength of marble dust concrete for 0%, 5%, 10%, 15% & 20%. Replacement of cement by marble dust for water curing.The concrete specimens are then allowed for 7 and 28 days for water curing . Then test will give us the nature of profile compressive strength variations and this variations can be effectively represent ed by means of graph.
  5. 5. • Marble is industrially processed by being cut, polished, and used for decorative purposes, and thus, economically valuable. • In marble quarries, stones are cut as blocks through different methods • During the cutting process, 20-30% of a marble block becomes waste marble powder.Marble powder is a waste material generated in considerable amounts in the world • Marble waste leads to a serious environmental problem as well • Hence the reuse of waste material has been emphasized.Waste can be used to produce new products or can be used as admixtures so that natural resources are used more efficiently ABSTRACT
  6. 6. • Blended cements based on the partial replacement of Portland cement clinker (PC) by wastes have been the subject of many investigations in recent years • These materials participate in the hydraulic reactions, contributing significantly to the composition and micro structure of hydrated product • In building industry, Marble has been commonly used for various purposes like flooring, cladding etc., as a building material since the ancient times • The industry's disposal of the marble powder material, consisting of very fine powder, today constitutes one of the environmental problems around the world • In India, marble dust is settled by sedimentation and then dumped away which results in environmental pollution, in addition to forming dust in summer and threatening both agriculture and public health INTRODUCTION
  7. 7. • It takes 1.5 cubic meter of total material to prepare one cubic of concrete, because cement and sand fills the gaps between the aggregate (crushed stone). • Let’s design M20 grade concrete. • Ratio for M20 concrete is 1:1.5:3 CALCULATIONS: For M20 take w/c Ratio=0.5 weight of concrete is 2400X3375x10-6=8.1 Kgs the proportional weight of cement is given as (1/5.5)x8.1=1.472 Kgs the weight of fine aggregate is given as =(1.5/5.5)x8.1=2.209 Kgs the weight of coarse aggregate is given as =(3/5.5)x8.1=4.4181 Kgs NOMINAL MIX CONCRETE DESIGN FOR ONE METRE CUBE OF M20 CONCRETE
  8. 8. The weight of fine aggregate is given as =(1.5/5.5)x8.1=2.209 Kgs the weight of coarse aggregate is given as =(3/5.5)x8.1=4.4181 Kgs Now we know the weight of cement Also we know the w/c ratio to calculate the quantity of water for the mix w/c ratio = 0.5 = cementofweight waterofweight
  9. 9. 0.5 =weight of water/1.472 weight of water=736 ml On the other hand, we need to calculate amount of marble powder by replacing with cement for 5% of marble powder we get the weight as =1.472x.05 =73.6 gms weight of cement required =1.472-73.6 =1.398 Kg amount of coarse aggregate and fine aggregate was similar as previous calculations
  10. 10. % of marble powder wt of marble powder(gms ) wt of ceme nt (Kgs) 0% 0 1.472 5% 73.6 1.398 10% 147.2 1.324 15% 220.8 1.251 20% 294.4 1.177 Quantity of material for one cube
  11. 11. • COMPRESSIVE STRENGTH – 7 DAYS TESTING OF HARDENED CONCRETE % of marble powder Load(KN) Compressive Strength(Mpa) 0% 340 16 5% 405 18 10% 430 19.11 15% 325 14.44 20% 270 12
  12. 12. Compressive strength graph after 7 days 16 18 19.11 14.44 12 0 5 10 15 20 25 0% 5% 10% 15% 20% 25% Y-Values
  13. 13. • COMPRESSIVE STRENGTH – 14 DAYS % of marble powder Load(KN) Compressive Strength(Mpa) 0% 390 19.33 5% 442 21.644 10% 474 24.066 15% 369 17.72 20% 330 16.66
  14. 14. Compressive strength graph after 14 days 19.33 21.644 24.066 17.72 16.66 0 5 10 15 20 25 30 0% 5% 10% 15% 20% 25% Y-VALUES
  15. 15. • COMPRESSIVE STRENGTH – 28 DAYS % of marble powder Load(KN) Compressive Strength(Mpa) 0% 550 24.44 5% 600 26.66 10% 660 29.333 15% 452.5 20.11 20% 420 18.66
  16. 16. Combined graph of 7,14 and 28 days 05 Y-Values 16 18 19.11 14.44 12 24.44 26.66 29.33 20.11 18.6619.33 21.644 24.066 17.73 16.66 0 5 10 15 20 25 30 35 0% 5% 10% 15% 20% 25% CHART TITLE
  17. 17. Workability It is observed here that degree of workability is medium as per IS 456-2000. The slump values of the concretes obtained from waste marble granules mix gave negligible effect as compared to normal concrete mix Slump Value for Concrete Mix % of Replacement Slump value (mm) 0 55 5 57 10 63 15 65 20 66
  18. 18. 55 57 63 65 66 48 50 52 54 56 58 60 62 64 66 68 0 5 10 15 20 Slump test Graph
  19. 19. Casting of cubes
  20. 20. Test specimens after 28 days curing
  21. 21. Test specimens after 28 days curing
  22. 22. Testing of the specimen
  23. 23. failure of cubes
  24. 24. Conclusions • Compressive strength increases with increase of marble powder • Upto to 10% replacement of cement there is increase in all mechanical properties • The optimum percentage for replacement of marble powder with cement and it is almost 10% cement for cubes • The replacement of 10% cement with waste marble powder attains maximum compressive strength • To minimize the cost of construction with usage of marble powder which is freely or cheaply available • More importantly to realm of saving the environmental pollution by cement production ; being the main objective as civil engineers

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