IJSTE - International Journal of Science Technology & Engineering | Volume 2 | Issue 6 | December 2015 ISSN (online): 2349-784X
Effect of Partial Replacement of Cement by Fly Ash and Fine Aggregate by Marble Dust, Stone Dust on Concrete Properties Mr. Lokesh Kumar M.E. Student Department of Civil Engineering M.I.T.S. Gwalior (M.P.), India
Prof. Gautam Bhadoriya Professor Department of Civil Engineering M.I.T.S. Gwalior (M.P.), India
Abstract This Paper Presents the experimental study undertaken to investigate the influence of partial substitution of cement(opc) with Fly ash (FA), and partial substitution of fine aggregate by marble dust (MD) and stone dust(SD). Fly ash is a by product of burnt coal from the Thermal power plants , Marble dust is a waste product from marble industries and stone dust is a waste product from crusher plants. Waste disposal is an important issue in the present time and utilization of industrial waste like fly ash, stone dust and marble dust in concrete making studied to investigate the improvement in the properties of concrete and presenting their use as a alternative materials. The experiments were carried out by substituting 25% and 35% of cement by FA and Fine aggregate is replaced up to 40% by MD,SD . Keywords: Ordinary Portland Cement(43 Grade), Industrial Waste Fly Ash, Marble Dust & Stone Dust ________________________________________________________________________________________________________
I. INTRODUCTION Nagar bhusana and Bai (2011) reported that crushed stone powder can be effective used to replace natural sand without reduction in strength of concrete at replacement level up to 40% (pofale and Quadori,2013) compressive strength of concrete (M25,M30) made using crusher dust increased at all the replacement level between 30%-60% at an interval of 10% however maximum increased strength is observed at replacement level of 40% . (Sushil Kumar, 1992) A small percentage that is 3% to 5% of fly ash is being used in India while in other countries the percentage of utilization is 30% to 80%, whatever is the type of fly ash, and it causes types of pollution And air bore diseases such as silicoses, fibrosis of lungs, bronchitis etc. Fly ash is being consumed (tonnes/day) by several organizations in production of cement, bricks, cellular blocks, asbestos sheets, filling low lying areas and construction of roads as shown in Table1. (Bhattacharya B. et al., 2013) The type of fly ash collected at the bottom of boiler furnace having lesser fineness & high carbon content is called bottom fly ash. The finest fly ash is called dry fly ash, collected from different electrostatic precipitators (ESP) in dry form. While the ash mixed with water, forming slurry and drained out in ponds is referred as pond fly ash. Several million tons of coal for generating the electricity is being consumed in India out of which 40% of coal is accounted for generating of fly ash as a bye product. By the year 2010 more than 180 million tons of fly ash would be generated every year.
II. MATERIAL AND METHOD A. Cement: The cement used was Ordinary Portland Cement (43 Grade) The results of physical tests conducted on cement are as follows (OPC) : Normal consistency = 32% Specific gravity = 3.10 Initial Setting time = 45 min. Final Setting time = 435 min. B. Fly ash: Fly ash used was obtained from Parichha Thermal Power Plant, Jhansi (U.P.) India. Fly ash is one of the residues generated in the combustion of coal Specific gravity of fly ash is 2.14.
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Effect of Partial Replacement of Cement by Fly Ash and Fine Aggregate by Marble Dust, Stone Dust on Concrete Properties (IJSTE/ Volume 2 / Issue 6 / 001)
C. Stone Dust: Stone dust used was obtained from stone crusher plant located in Deen Dayal Nagar, Gwalior (M.P.) The fineness modulus and specific gravity are 3.98and 2.64 respectively. D. Marble Dust: Marble used was obtained from processing plant out of sawing and polishing of marble blocks. Sources of marble dust was obtained from Radha Swami Dayal Bagh Agra. Specific gravity is 2.72 . E. Aggregate: 1) Fine Aggregate: Specific gravity = 2.62 Fineness modulus = 3.91 2) Coarse aggregate: Specific gravity = 2.70 Fineness modulus = 5.04
III. EXPERIMENTAL INVESTIGATION The experimental investigation was planned to know the effect of addition of fly ash and marble dust, stone dust as a replacement of ordinary portland cement (43 grade) and fine aggregate (natural sand) by SD amd MD . Twelve types of concrete mixes (M1,M2,M3,M4,M5,M6) by 25% replacememt by fly ash and concrete mixes (M1,M1,M3,M4,M5,M6) by 35% replacement by fly ash were prepared as samples of 150x150x150 mm cube size. The M30 mix was designed as per IS 10262:2009 A. Control Mix:
Water(liters) 0.45 183
Cement(kg) 1 406
Table – 1 Fine Aggregate(kg) 1.44 585
Coarse Aggregate(kg) 2.90 1181
B. Detail Of Sample By Adding 25% And 35% Fly Ash: Table – 2 Fine Aggregate Sand-100% + MP-0% + SD -0%
Coarse Aggregate 20mm-60% + 10mm-40%
W/C 0.45
7 days Strength(N/mm2) 27.55
FA - 25%
Sand-70% + MP-20%+SD-10%
20mm-60% + 10mm-40%
0.55
20.88
M2 M3 M4 M5
Cement- 75% + FA - 25% Cement – 75% + FA - 25% Cement - + FA – 25% Cement – 75% + FA – 25%
Sand-70% + MP-15% + SD –15% Sand-70% + MP-10% + SD - 20% Sand-60% + MP-30% + SD- 10% Sand-60% +MP-20% + SD- 20%
20mm-60% +10mm-40% 20mm-60% + 10mm-40% 20mm-60% + 10mm-40% 20mm-60% + 10mm- 40%
0.55 0.55 0.55 0.55
23.55 26.66 21.33 22.22
M6
Cement – 75% + FA – 25%
Sand-60% + MP-10% + SD- 30%
20mm-60% + 10mm-40%
0.55
20.88
M1 M2 M3 M4 M5 M6
Cement – 65% + FA – 35% Cement – 65% + FA – 35% Cement – 65% + FA – 35% Cement - 65% + FA – 35% Cement – 65% + FA – 35% Cement – 65% + FA – 35%
Sand-70% + MP-20% + SD- 10% Sand-100% + MP-0% + SD – 0% Sand-70% + MP-20% + SD –10% Sand-70% + MP-15% + SD –15% Sand-70% + MP-10% + SD - 20% Sand-60% + MP-30% + SD- 10%
20mm-60% + 10mm-40% 20mm-60% + 10mm-40% 20mm-60% + 10mm-40% 20mm-60% + 10mm-40% 20mm-60% + 10mm-40% 20mm- 60% + 10mm-40%
0.60 0.60 0.60 0.60 0.60 0.60
19.55 20.44 23.11 19.55 17.77 18.66
Mix C
Binder Cement-100% + FA – 0%
M1
Cement-75% +
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Effect of Partial Replacement of Cement by Fly Ash and Fine Aggregate by Marble Dust, Stone Dust on Concrete Properties (IJSTE/ Volume 2 / Issue 6 / 001)
Compressive Strength at 25% fly ash
Compressive Strength at 35% fly ash
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Effect of Partial Replacement of Cement by Fly Ash and Fine Aggregate by Marble Dust, Stone Dust on Concrete Properties (IJSTE/ Volume 2 / Issue 6 / 001)
IV. CONCLUSION The following observations were made as result of experiments. 1) Increase in water cement ratio with addition of 25% fly ash as compared to control mix in diverse mixes(M1,M2,M3,M4,M5,M6) (shown above table.) 2) The 7 days compressive strength of cube is maximum for concrete mix M3 with addition of 25% fly ash as compared to other diverse concrete mixes viz M1,M2,M4,M5,M6 shown in above table. It is very much near to the control mix .This shows it is a better side to use such material. 3) Water cement ratio also increase with addition of 35% . 4) T he 7 days compressive strength of cube is maximum for mix M3 than other diverse mixes with addition of 35% of fly ash in concrete mix. 5) Using fly ash , marble dust and stone dust waste in concrete mix proved to be very useful to solve environmental problems and reduces to some extent the requirement of cement in large quantity. Therefore, it is recommended to reuse these wastes in concrete to move towards sustainable development in construction industry.
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