JNTU COLLEGE OF ENGINEERING,ANANTAPUR.          PRESENTATION BY….                        R.RAGHAVENDRA                    ...
CONTENTS           :1. INTRODUCTION2. MANUFACTURE OF ROBO SAND3. HOW ROBOSAND IS SUPERIOR TO   RIVERSAND?4. MONITORING THE...
INTRODUCTION      :    Sand Dredging of creeks and river beds             R                                             ...
WHAT IS         ROBOSAND: ROBOSAND is sand manufactured, obtained    from specific natural granite using the    state-of ...
MANUFACTURE OF    ROBOSAND :-SAND MANUFACTURINGMACHINE
SCREENING   EQUIPMENT
FINAL PRODUCT (ROBO SAND)
HOW ROBOSAND IS    SUPERIOR TO RIVER          SAND   Particle ShaPe   high-comPreSSion Strength   greater Durability  ...
MONITORING THE QUALITY OF ROBOSAND  Sieve analysis  Optical microscopic study to  check      the paricle size  Workabil...
TesT on concreTe making maTerial wiTh roBosanDanD river sanD as ingreDienTs cemenT                 (as per is 4031-1988)  ...
Coarse aggregate (as per IS: 2386-1963 & IS: 383-1970)                                RIVER SAND   ROBOSANDSpecific Gravit...
Laboratory Trial Mix Design Test Results                                   RIVER SAND   ROBOSANDWater cement ratio        ...
ADVANTAGES1. Cheaper :  Great saving2.    No impurities           No wastage3.    Superior building       Saving substa...
CONCLUSIO   N :    The Government of India is in the process ofimposing ban regulation norms on digging on riverbeds.This...
REFERENCES     : WWW.ROBOSAND.COM THE HINDU PROPERTY PLUS     ( Saturday, Jul 02, 2005)
?R.RAGHAVENDRA
Presentation on robosand @ crit by raghavendra
Upcoming SlideShare
Loading in …5
×

Presentation on robosand @ crit by raghavendra

7,712 views

Published on

One of the major adventures of civilization is construction .With the passing times in growth of population, today construction activity is at its peak .Even with the advancement of technology the quality of construction largely depends upon the ingredients used to construct any building. One such ingredient is sand, which is one of the most essential components to give shape to the dreams of the people. Natural sand has been the main source of fine aggregates, since man began to use concrete and masonry. The fact remains undisputed that the river sand that has been produced by rivers in natural processes has not increased for ages. Down the years, these river sand deposits have been exploited to the fullest extent. This indiscriminate exploitation causing almost an irreversible damage to the river system are leading to ecological damage, ground water depletion, water scarcity and fall in farm production. Above all, illegal quarrying and use of filter sand is nothing but playing with human lives. Most of the state governments of India are imposing environmental ban on the dredging operations and all sand quarrying operations in most of the areas. This leads to the development of another latest technology, alternative to the river sand –ROBOSAND

Published in: Education
0 Comments
12 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
7,712
On SlideShare
0
From Embeds
0
Number of Embeds
7
Actions
Shares
0
Downloads
398
Comments
0
Likes
12
Embeds 0
No embeds

No notes for slide

Presentation on robosand @ crit by raghavendra

  1. 1. JNTU COLLEGE OF ENGINEERING,ANANTAPUR. PRESENTATION BY…. R.RAGHAVENDRA III/IV B.Tech, Civil
  2. 2. CONTENTS :1. INTRODUCTION2. MANUFACTURE OF ROBO SAND3. HOW ROBOSAND IS SUPERIOR TO RIVERSAND?4. MONITORING THE QUALITY OF ROBOSAND5. RIVER SAND VS ROBOSAND6. ADVANTAGES7. CONCLUSION8. REFERENCES
  3. 3. INTRODUCTION : Sand Dredging of creeks and river beds R O Not consistent in size and gradation B Composition of clay, silt, marine products, O S moisture and organic impurities and A N other unwanted material. D Poor quality
  4. 4. WHAT IS ROBOSAND: ROBOSAND is sand manufactured, obtained from specific natural granite using the state-of - the – art European technology. Its numerous advantages over river sand have made it a favorite and a “Must- to- use” with quality conscious builders.
  5. 5. MANUFACTURE OF ROBOSAND :-SAND MANUFACTURINGMACHINE
  6. 6. SCREENING EQUIPMENT
  7. 7. FINAL PRODUCT (ROBO SAND)
  8. 8. HOW ROBOSAND IS SUPERIOR TO RIVER SAND Particle ShaPe high-comPreSSion Strength greater Durability truckloaDS of aDvantageS DoeS away with conStuction DefectS SuPerior Qualit greater economy SavingS eaSy availabilty
  9. 9. MONITORING THE QUALITY OF ROBOSAND  Sieve analysis  Optical microscopic study to check the paricle size  Workability ( slump test by slump cone method)  Cube test for compressive strength  Various mix designs
  10. 10. TesT on concreTe making maTerial wiTh roBosanDanD river sanD as ingreDienTs cemenT (as per is 4031-1988) RIVER SAND ROBOSAND 3 days compressive strength 33.0 M Pa 33.0 M Pa 7 days compressive strength 39.0 M Pa 39.0 M Pa 28 days compressive strength 49.0 M Pa 49.0 M Pa setting times initial 190 min 190 min final 290 min 290 min Fineness (’s) 308 sq. m/Kg 308 sq. m/Kg
  11. 11. Coarse aggregate (as per IS: 2386-1963 & IS: 383-1970) RIVER SAND ROBOSANDSpecific Gravity 2.71 2.71Water absorption % by wt. 0.42 0.42Sand (as per IS: 2386-1963 & IS: 383-1970) RIVER SAND ROBOSANDSpecific Gravity 2.52 2.52Water absorption % by wt. 0.20 0.20Material finer than 75 micron 0.04 0.08(% by weight)
  12. 12. Laboratory Trial Mix Design Test Results RIVER SAND ROBOSANDWater cement ratio 0.5 0.5Workability value of slumping in 65 50mmCompressive strength of concrete 37 44cubes at 28 days N/sq. mm RIVER SAND ROBOSANDMarine Products 2- 4% NilOver Sized Material 6- 8% NilClay & Silt 5-8% NilMoisture 4-5% NilTotal 17- 25% Nil
  13. 13. ADVANTAGES1. Cheaper :  Great saving2. No impurities  No wastage3. Superior building  Saving substantially strength and physical on cement cost properties4. Consistent gradation  Screening avoided5. “GREEN SAND”  Eco friendly product6. Ever available
  14. 14. CONCLUSIO N : The Government of India is in the process ofimposing ban regulation norms on digging on riverbeds.This comes in the midst of growing environmentalconcerns and greater awareness of protection of naturebounties. When that happens river sand will become ascarce item. And what happens next, go for alternatives.The alternative is Guess what - Manufactured and qualitysand “RaboSand”.
  15. 15. REFERENCES : WWW.ROBOSAND.COM THE HINDU PROPERTY PLUS ( Saturday, Jul 02, 2005)
  16. 16. ?R.RAGHAVENDRA

×