M sand

Suitability of M-sand as fine aggregates in mortar & concrete

1. SUITABILITY OF MANUFACTURED SAND (M-SAND) AS FINE AGGREGATE IN CONCRETE 1 PRESENTED BY RASTHAN SAHAR K.P S7 C2 ROLL NO: 59 GUIDED BY Sri. R. SATHEESH CHANDRAN Professor Dept. OF CIVIL Engg. CET

2. Present Relevance Misconception about M-sand National Green Tribunal has recently banned sand mining due to Disastrous environmental consequences Quality of river sand has been reduced due to over exploitation of the river bed 2

3. Misconception About M-sand This is evident from a recent news that came on 8 th of august 2013 in Calicut edition of Malayala Manorama daily 3

4. 4 Fig. 1

5. 5 Source: www.msand.in/comparison , accessed on 6/10/2013 Table 1

6. 6 Source: www.msand.in/comparison , accessed on 6/10/2013 Table 2

7. National Green Tribunal Has Recently Banned Sand Mining Due To Disastrous Environmental Consequences This is evident from a recent news that came on 6 th of august 2013 in online edition of TOI 7

8. 8 Fig 2

9. Quality Of The River Sand Has Been Reduced Due To The Over Exploitation Of River Bed Today the sand available in the river bed is very coarse and contains a high percentage of silt, clay and other organic impurities, this will reduce the quality of concrete. 9

10. 10 Source: www.msand.in/comparison , accessed on 6/10/2013 Table 3

11. Purpose Of Presentation To prove scientifically that M-sand is more effective than the best natural counterpart Comparative analyzing of properties of M-sand and River sand Concrete characteristics using M-sand and River sand (M20 grade) 11

12. 12 Properties Type of sand M-sand River sand 1. Textural composition (% by weight) Coarse sand (4.75-2.00 mm) Medium sand (2.00-0.425 mm) Fine sand (0.425-0.075 mm) 28.1 44.8 27.1 6.6 73.6 19.8 2 . Specific gravity 2.63 2.67 3 . Bulk density ( kN /m3) 15.1 14.5 4. pH 10.11 8.66 5 . Chemical composition of M-sand M-sand contains elements like Si, Al, Ca, Mg, Na, K, Fe, etc. Properties of M-sand and river sand Table 4

13. Texture Of M-sand And Natural River Sand Particles 13 Source: www.khanija.kar.ncode.in/DCPublication , accessed on 6/10/2013 Fig. 3

14. Grain Size Distribution Curves Of The M-sand And River Sand 14 Source: www.msand.in/comparison , accessed on 6/10/2013

15. Concrete Characteristics Using M-sand And River Sand Consistency of concrete IS 456 code specifies a minimum slump of 50 mm for medium workability. M20 grade concrete mix meet this requirement when M-sand is used as fine aggregate. Bond strength 13.9 MPa for river sand and 14.1 MPa for M-sand Stress-strain characteristics of concrete The strain corresponding to peak stress is 0.0017 and 0.0021 for the concrete using river sand and M-sand respectively. Compressive and flexural strength of concrete 15

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17. Conclusion 17 Manufactured sand is more superior than river sand as fine aggregate in mortars and concrete

18. References ASTM C1072-11 “Standard Test Methods for Measurement of Masonry Flexural Bond Strength” American Society for Testing Materials. BS: 4551 - 1980, "British standard methods of testing mortars, screeds and plasters", British Standards Institution, U. K. IS: 456 – 2000, “Plain and reinforced concrete – code of practice”, Bureau of Indian Standards, New Delhi, India. IS: 383 – 1970 (2002), “ Specification for coarse and fine aggregates from natural sources for concrete”, Bureau of Indian Standards, New Delhi, India. IS: 2116 – 1980 (1998), “Specification for sand for masonry mortars”, Bureau of Indian Standards, New Delhi, India. IS: 2250 – 1981 (2000), "Indian Standard Code of Practice for Preparation and Use of Masonry Mortars", Bureau of Indian Standards, New Delhi. 18

19. IS: 1905 - 1987, "Code of Practice for Structural Use of Un reinforced Masonry", Bureau of Indian Standards, New Delhi IS: 1199 – 1959 (2004), “Methods of sampling and analysis of concrete” Bureau of Indian Standards, New Delhi, India. IS: 516 – 1959 (2004), “Methods of tests for strength of concrete”, Bureau of Indian Standards, New Delhi, India. IS: 2770 (Part I) – 1967 (2002), “Methods of testing bond in reinforced concrete”, Bureau of Indian Standards, New Delhi, India. Venkatarama Reddy, B. V. and Ajay Gupta, Characteristics of cement-soil mortars, Materials and Structures (RILEM), Vol. 38 (July 2005), No. 280, 639-650 www.msand.in www.khanija.kar.ncode.in 19

20. THANK YOU 20