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By
K.Pranuthi-14011D9010
Contents
Introduction
Ingredients
Methods used for making HSC
Comparison Between HSC and HPC
Advantages
Applications...
Introduction
Concrete is defines as High-
Strength Concrete (HSC) only on
the basis of :
 Compressive strength
 At given...
28 day Compressive Strength
• 1970’s 40MPa
• later 60-100MPa
Ingredients of HSC
Cement
Sand
Water (Low Water -Cement Ratio)
Optimum sized aggregates (10mm
to 20mm)
Admixtures
Admixtures
 Silica fume (To prevent Ca(OH)₂
crystals in cement matrix)
 Water reducing agents (Super
plasticizers)
Dosag...
Methods for making HSC
1. Seeding
2. Re-vibration
3. High Speed Slurry
4. Use of admixtures
5. Inhibition of Cracks
6. Sulphur Impregnation
7. Use of Cementitious
aggregates
Comparison Between
HSC and NSC
High Resistance to Applied
pressures compared to NSC
 Water Cement Ratio is :
HSC - 0.25
...
Normal
Strength
20-50 MPa
High Strength 50-100 MPa
Ultra High
Strength
100-150 MPa
 Aggregate size are:
HSC - 10 mm to 20mm
NSC - 40mm
Higher Modulus of Elasticity
 Lower creep coefficient
 Less deflec...
Advantages
Reduces amount of Steel
Reduces Dead Load
Reduces space occupied by
Columns.
Increases rental Space.
High ...
To use the concrete service at
early age.
Eg :Pavement in 3 days
High rise buildings an be build
by reduced columns.
Limitations
Damaged at high temperature
i.e less resistance to fire.
Must be expertise in selection of
ingredients.
Applications
Long Span Bridges : Vidya Sagar
Setu at Kolkata
High Rise
building :
South Wacker
Drive , Chicago
Kaiga
Power
Project
Petronas
Towers,
Malaysia
Conclusion
 In recent years there has been a
rapid growth of interest in high
strength concrete.
We may use HSC more oft...
Thank
you
High strength concrete
High strength concrete
High strength concrete
High strength concrete
High strength concrete
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High strength concrete

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Brief on High Strength concrete

Veröffentlicht in: Ingenieurwesen
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High strength concrete

  1. 1. By K.Pranuthi-14011D9010
  2. 2. Contents Introduction Ingredients Methods used for making HSC Comparison Between HSC and HPC Advantages Applications Conclusion
  3. 3. Introduction Concrete is defines as High- Strength Concrete (HSC) only on the basis of :  Compressive strength  At given age
  4. 4. 28 day Compressive Strength • 1970’s 40MPa • later 60-100MPa
  5. 5. Ingredients of HSC Cement Sand Water (Low Water -Cement Ratio) Optimum sized aggregates (10mm to 20mm) Admixtures
  6. 6. Admixtures  Silica fume (To prevent Ca(OH)₂ crystals in cement matrix)  Water reducing agents (Super plasticizers) Dosage rate 5% to 20% or higher by mass of cementing material.
  7. 7. Methods for making HSC 1. Seeding 2. Re-vibration 3. High Speed Slurry 4. Use of admixtures 5. Inhibition of Cracks
  8. 8. 6. Sulphur Impregnation 7. Use of Cementitious aggregates
  9. 9. Comparison Between HSC and NSC High Resistance to Applied pressures compared to NSC  Water Cement Ratio is : HSC - 0.25 NSC - 0.4 to 0.6
  10. 10. Normal Strength 20-50 MPa High Strength 50-100 MPa Ultra High Strength 100-150 MPa
  11. 11.  Aggregate size are: HSC - 10 mm to 20mm NSC - 40mm Higher Modulus of Elasticity  Lower creep coefficient  Less deflection Fracture Surface HSC – Smooth NSC - Rough
  12. 12. Advantages Reduces amount of Steel Reduces Dead Load Reduces space occupied by Columns. Increases rental Space. High Compressive Strength
  13. 13. To use the concrete service at early age. Eg :Pavement in 3 days High rise buildings an be build by reduced columns.
  14. 14. Limitations Damaged at high temperature i.e less resistance to fire. Must be expertise in selection of ingredients.
  15. 15. Applications Long Span Bridges : Vidya Sagar Setu at Kolkata
  16. 16. High Rise building : South Wacker Drive , Chicago
  17. 17. Kaiga Power Project
  18. 18. Petronas Towers, Malaysia
  19. 19. Conclusion  In recent years there has been a rapid growth of interest in high strength concrete. We may use HSC more often in future.
  20. 20. Thank you

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