Alccofine 1203 in Hvfa Concrete Floor

7/25/2019 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

[email protected]

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



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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



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Material Used


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Glimpses of HVFA Concrete with Alccofine


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Thanks

Documents

Alccofine 1203 in Hvfa Concrete Floor