Interns @ Ultratech

ULTRATECH CEMENT LTD

ANOOP K.N.251091

INTERNSHIP PRESENTATION

ULTRATECH CEMENTS(Aditya Birla Group) 2

A US $35 billion corporation, the Aditya Birla Group is in the League of Fortune 500

Anchored by an extraordinary force of over 133,000 employees, belonging to 42 different nationalities

Over 60 per cent of its revenues flow from its overseas operations.

The Group operates in 33 countries

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BUSINESS

Globally

The world’s most cost-efficient aluminium and copper producers. Hindalco-Novelis is the largest aluminium rolling company.

No.1 in viscose staple fibreThe largest producer of carbon black The 4th largest producer of insulatorsThe 5th largest producer of acrylic fibreAmong the top 10 cement producersAmong the best energy-efficient fertilizer plants

ULTRATECH CEMENTS(Aditya Birla Group)

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In India

A top fashion player (branded apparel – Van Huesen, Louis Phileppe, Peter England , Allen solly etc…….)

The 2nd largest producer of viscose filament yarn.The largest producer in the chlor-alkali sector.Among the top three mobile telephony companies.A leading player in Life Insurance and Asset

Management.Among the top two supermarket chains in the retail

business.Among the top 10 BPO companies


5ULTRATECH CEMENTS(Aditya Birla Group)

UltraTech cement is the 8th largest cement producer in the world

UltraTech is the country's largest exporter of cement clinker( 45% of total exports)

UltraTech and its subsidiaries have a presence in 5 countries through 11 integrated plants, 1 white cement plant, 1 clinkerisation plant, 15 grinding units, 2 rail and 3 coastal terminals and 101 RMC plants.

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OBJECTIVE OF CEMENT COMPANY??


To be No.1

How?“ To sell as many bags possible”

○ Possible when they INNOVATE. ○ Whitetopping is one such innovative concept

promoted by cement manufacturers across world


WORK ASSIGNED?

To do a study on Whitetopping technology.

Concrete mix design using blended cements for 7th day serviceability of road. Portland Pozzalana cement andPortland slag cement


WHITETOPPING Definition : It’s a PCC overlay on top of

existing bituminous pavement.

How old is technology?Very old , works date back to early 1900’sPretty new to India.


WHY WHITETOPPING? Rutting of bituminous pavement is a real

problem in hot climate like India, with heavy truck loads, operating under frequent start/stop conditions.


ADVANTAGES Extended service life Increased structural capacity Reduced maintenance requirements and Lower life-cycle costs Improvement in safety in view of the increased

reflection of light Improving the environmental benefits – as concrete

roads are much greener and less polluting.


VARIETY OF WHITETOPPING Classification based on degree of bonding

between the underlying bituminous layer with PCC overlay and the thickness of the overlay

Conventional Whitetopping: Thin Whitetopping(TWT):Ultra-Thin Whitetopping (UTWT):


Conventional Whitetopping( No bonding considered)Thickness of 200 mm or moreDesigned as new rigid pavement

Thin Whitetopping( often bond considered but not mandatory)Thickness > 100mm but < 200mm

Ultra-Thin Whitetopping ( Bonding is mandatory)Thickness less than or equal to 100mm


CONSTRUCTION

Scraping of the existing Bitumen Road to get key


Cleaning of the scraping grit


Aligning of rails for paver movement


Receiving of first pour of concrete


Paver Machine in operation


Bull float operation


Surface Texturing being done

ULTRATECH CEMENTS(Aditya Birla Group) 20Quality check – controlled slump most essential

Day

Night


Spraying of Curing Compound


Covering Fresh Concrete with plastic Sheets to prevent moisture loss and wind


Groove cutting in progress


Finished surface


CONCRETE MIX DESIGNIS:10262-2009

IS:456-2000 IRC:15-2002IRC:44-1976


STEPS IN DESIGN1. All the needed information for the project are

collected2. Target average flexural and compressive

strength is estimated on the basis of minimum specified strength.

3. Water-cement ratio is determined.4. Gradations of coarse aggregate, fine aggregate

to give required combined aggregate grading.5. Required workability is chosen 6. Proportions of all ingredients of mix are found


Goal To achieve minimum of M35 strength on

7th day.

Flexural strength of 4 Mpa as recommended by IRC.


1. PSC MIX PROPORTIONCement = 410 kg

Coarse aggregate 20 mm = 640 kg

12.5 mm = 523 kg

Manufactured sand = 775 Kg

Water = 139.50 Kg

Admixture(dosage @ 0.5% by weight of cement) = 1.863 litres

Total density = 2487.5 kg/m3


2. PPC MIX PROPORTIONCement = 410 kg

Coarse aggregate 20 mm = 640 kg

12.5 mm = 523 kg

Manufactured sand = 775 Kg

Water = 139.50 Kg

Admixture(dosage @ 0.4% by weight of cement) = 1.64 litres

Total density = 2487.5 kg/m3

(NOTE: The quantities above are for 1 m3 of concrete)


TESTING At CIVIL-AID TECHNOCLININC PVT LTD

(A Bureau Veritas Group company), Bengaluru


RESULTSSL.

NO

CEMENT

TYPE

NO OF

CUBES

CASTE

D

FOR COMPRESSIVE

STRENGTH

ON/AFTER

AVERAGE

STRENGTH

RECOMMENDED

Mpa

AVERAGE

STRENGTH

OBTAINEDMpa

1 PSC 15 7 Days 35 37.87

15 28 Days >35 >50

2 PPC 15 7 Days 35 39.28

15 28 Days >35 52.09


CONCLUSION The criteria of achieving strength of 35Mpa

on 7th day can be successfully obtained by adopting the above mentioned mix proportions, there by reinforcing the belief that even the “blended” cements can be used for the design of concrete roads.


THANK YOU

Interns @ Ultratech

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