Alccofine 1203 in Hvfa Concrete Floor.
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Transcript of Alccofine 1203 in Hvfa Concrete Floor.
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Ambuja Cements Ltd. 2010
ALCCOFINE 1203 in HVFA CONCRETE FLOOR.
M35 - High Volume Fly Ash concrete withAlccofine 1203.
Conducted by :
Sanjeev Sharma
CSG Himachal Pradesh
For Sales query:
Abinash Mishra
National Head-Sales and Marketing
ALCCOFINE products
09892370453
www.alccofine.com
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Fortunately, a waste product can be substituted for large portions of Portland
cement, significantly improving concretes environmental characteristics.
Fly ash, consisting mostly of silica, alumina, and iron, forms a compound
similar to Portland cement.
High volume of fly ash are used in concrete creates a stronger, more
durable product and reduces concretes environmental impact
considerably. Due to its strength and lower water content, cracking is
reduced.
The study reveals that high volume fly ash concrete show that higher
resistance against acid attack, alkaline attack, and sulphate attack
compared with conventional concrete.
Introduction
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Innormal Fly Ash Concrete, the ash replacement(for Cement) is usually in
range of15-35%. IS 1489 ( Part 1 ) : 1991 (Indian Standard Portland-Pozzolana Cement Specification : Fly Ash Based) specifies that the fly ash
constituent in Portland-pozzolana cement shall not be less than 15 percent
and not more than 35 percent by mass of Portland-pozzolana cement.
InHigh-volume fly ash (HVFA) Concrete, the ash replacement is more thanusual, and in many cases, exceeds a 50% weight replacement for cement.
So, technically, there is a higher than normal volume of ash within the mix
design, and because of the specific gravity difference between cement (3.15)
and a standard fly ash (2.54 to 2.65), the volume of total Cementitious
material can increase.
Introduction of Alccofine 1203
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Higher ultimate strength
Improved workability
Reduced bleeding
Reduced heat of hydration
Reduced permeability
Increased resistance to sulphate attacks
Lowered costs
Reduced shrinkage
Increased durability
Properties of HVFA concrete
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We proposed to use Alccofine 1203 along with 50% fly ash due to the following
benefits of this product:-
ALCCOFINE 1203 is a new generation, ultrafine, low calcium silicate product,
manufactured in India. It has distinct characteristics to enhance
'performance of concrete' in fresh and hardened stages
ALCCOFINE1203 performs in superior manner than all other mineral
admixtures used in concrete within India. Due to its inbuilt CaO content,
ALCCOFINE1203 triggers two way reactions during hydration
Primary reaction of cement hydration.
Pozzolanic reaction: ALCCOFINE also consumes by
product calcium hydroxide from the hydration of cement to form additional
C-S-H gel
This results in denser pore structure and ultimately higher strength gain.
Introduction of Alccofine 1203
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Mix Design for 1 Cum of HVFA concrete
M 35 ConcreteHVFA with
AlccofineHVFA
Cement in Kgs 366 366
Alccofine in Kgs 32.06 0
Admixture dosage in Kgs 5.88 5.49
Fly Ash in Kgs 92 92
FA in Kgs 651 651CA-1, 10 mm Kgs 370 370
CA-2, 20 mm Kgs 687 687
Water 230.3 215.26
W/C 0.47 0.47
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Proportioning of materials for 8 cubes
M 35 ConcreteHVFA with
Alccofine
HVFA
Cement in Kgs 9.855 9.855
Alccofine in Kgs 0.88 0.00
Admixture dosage % 1.2 1.2
Fly Ash in Kgs 2.7 2.7
FA in Kgs 19.17 19.17CA-1 10 mm Kgs 10.9 10.9
CA-2 20 mm Kgs 20.25 20.25
Water 5.9 5.9
W/C 0.47 0.47
Sikament 170
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Results
Slump in mmM 35 Concrete HVFA with Alccofine HVFA
Initial 70 55
30 minutes retention 60 40
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Results
Compressive Strength in MpaM 35 Concrete HVFA with Alccof ine HVFA
1 Day 9.95 10
3 Days 22.37 18.01
7 Days 31.14 24.7728 Days 47.02 39.28
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Concrete comparison ( Compressive Strength)
MPa
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Concrete:-Like to like comparison
The gain in compressive strength for HVFA concrete with Alccofine is substantially
high for 3,7 & 28 days
The initial slump & slump retention of the concrete with Alccofine is also higher
than that of concrete without Alccofine signifying that Alccofine is also contributing
towards increasing the workability of the concrete
Additional economy in the mix design can be achieved by reducing cement
content by 15% in case of HVFA with Alccofine
Conclusion from results
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Concrete:-Like to like comparison
The gain in compressive strength for HVFA concrete with Alccofine is substantially
high for 3,7 & 28 days
The initial slump & slump retention of the concrete with Alccofine is also higher
than that of concrete without Alccofine signifying that Alccofine is also contributing
towards increasing the workability of the concrete
Additional economy in the mix design can be achieved by reducing cement
content by 15% in case of HVFA with Alccofine
Conclusion from results
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Mix Design for 1 Cum of HVFA concrete with 15% reduced cementcontent
M 35 Concrete HVFA with Alccofine
Cement in Kgs 311.1
Alccofine in Kgs 26.13
Admixture dosage in Kgs 4.47
Fly Ash in Kgs 62.22
FA in Kgs 651CA-1, 10 mm Kgs 370
CA-2, 20 mm Kgs 687
Water 180
W/C 0.45
CEMENTCONTENT
REDUCEDB
Y15%
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Results
Compressive Strength in MpaM 35 Concrete HVFA with Alccof ine
1 Day 11.61
7 Days 34.76
28 Days 44.95
Slump in mmM 35 Concrete HVFA with Alccof ine
Initial 22
(As desired by the customer for site mixing)
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Compressive Strength HVFA with Alccofine
MPa
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Cement Content 366 Kg / Cu M reduced to311 Kg / Cu M
Saving of 55 Kg / Cu MCost of Cement per kg Rs 6.70 (Rs 335/bag)
Saving Rs 368.50 / Cu M
Alccofine Content Fly Ash Content32.06 Kg / Cu M reduced to 26.13 Kg 92 Kg reduced to 62 Kg
Saving of 5.93 Kg / Cu M Saving of 30 Kg / Cu M
Cost of Alccofine per kg Rs 20.16 Cost of Fly Ash per Kg Rs1Saving Rs 120 / Cu M Saving Rs 30 / Cu M
(Admixture & water content not considered as the client lowered the slump requirement from the initial
50 mm to 20 mm).
TOTAL SAVING PER CUBIC METER = Rs 489.50
TOTAL CONCRETE DONE TILL DATE = 286 Cu M.
TOTAL SAVING BY USING ALCCOFINE 1203 IN HVFA CONCRETE TILL DATE = Rs 1,39,997
Savings
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Economical
We can achieve additional economy / savings in HVFA concrete by
using Alccofine 1203 without compromising on strength &
workability of concrete
Improved Strength Gain
Improved Durability
Reduced Segregation
Improved Workability
Better Retention of Workability
Conclusion from results
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Material Used
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Glimpses of HVFA Concrete with Alccofine
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Thanks