| Cement
Content per m3 of
concrete |
Dosage of admixture per m3 of concrete | Slump
Values | ||
| Initial |
After 1
hour |
After 1 1/2 hour | ||
| 300 kg | 1.65 ltr (0.55%) | 190 mm | 120 mm | 100 mm |
| 320 kg | 1.60 ltr (0.50%) | 200 mm | 140 mm | 110 mm |
| 340 kg | 1.55 ltr (0.45%) | 200 mm | ||
| 360 kg | 1.45 ltr (0.40%) | Collapse | 140 mm | 110 mm |
| 400 kg | 1.40 ltr (0.35%) | Collapse | 120 mm | 90 mm |
| 440 kg | 1.30 ltr (0.30%) | Collapse | 110 mm | 80 mm |
1) Hindustan Construction Company required Chemical Admixtures of the
nature which are suitable to the mix they have designed with 70% replacement of
cement with flyash, slag etc. 2) HCC needed an Admixture as a waterproofing
agent, and also to reduce water-cement ratio by about 20%.
3) They require a
material, which works in severe marine environments.
Cera-Chem along with other well known construction chemical companies competed for the project order in a very adverse climatic environment requiring least dosage of admixture but with good workability and cohesiveness. All the other construction chemical manufacturers were unable to succeed in the trial stage itself as their chemicals are found uncompatible with the ingredients of concrete available at Ennore. Cera-Chem with a strong technical background procured the order for CERAPLAST 300-M which is a high grade Superplasticizer cum Retarder giving high strength concrete suiting to the marine atmosphere at Ennore. Cera-Chem supplied around 2,00,000 litres till date and still are in the course of supply.
1) East Coast Construction Company were on a look out for
admixtures of the nature which are to be high water reducing as well as fast
setting giving high strength.
2) They needed good workable concrete of slump
with an initial value of 180mm to 190mm and should be pumpable.
3) They
require a material, which works in high water level areas reducing the water
content of the concrete mix.
Cera-Chem was successful to procure the order for CERAPLAST 200 after satisfying all the requirements of the client through thorough trials and testing. Around 5000 litres of the admixture has been supplied for the first phase of the project - construction of bridge piers where 1/3rd of its height is submerged under water.
Benefits to the User/Project
Secondary chemicals for waterproofing were not required as CERAPLAST
200 itself acted as waterproofing plasticizer, which made the project economical.
CASE STUDY - 4 :
CCC Builders
Merchant (Delhi) Private Limited - New Delhi Hearing the Cera-Chem range of concrete admixtures,
CCC Builders (Delhi) Pvt. Ltd. Approached Cera-Chem for the supply of an admixture
for the manufacture of concrete blocks.
Their Requirements
1) They
needed a waterproofing chemical to make the top surface of the concrete blocks
water repellent
2) They need an admixture which reduces the water-cement ratio of concrete
to get high strength and impact resistance for the blocks
3) High strength requirements within a week of manufacturing Cera-Chem suggested
CERAPLAST 300 which is a high grade superplasticizer which make the concrete
dense so impermeable making it waterproof. Lab trials were conducted, tested
for strength and thus found suitable to their requirements.
CASE STUDY - 5 :
L & T Ready Mix - ECC Group - Chennai
Cera-Chem enlisted as an authorised manufacturer of
construction chemicals in the L&T ECC Group as the admixture
CERAPLAST 300-SRV came
successful with good results suiting to the Readymix Concrete Plants of L&T.
An approval letter has been given from the main concrete lab of ECC Group
showing that Cera-Chem's admixture can be used in the L&T RMC plants.
The details of the approval letter and the test report has been enclosed along
with.
CERAPLAST 300-SRV tested
in the concrete lab was found suitable along with mineral admixture-flyash
(20% replacement of cement), which was encouraging and the admixture is found
suitable to work in lower water-cement ratios.
P.R. Ready Mix - Coimbatore
Cera-Chem with the same material CERAPLAST 300-RS(G) went inside the wedge
of RMC market of Coimbatore with admixture working with least dosage with
good workability. Indian Institute Of Technology (IIT) - Chennai Cera-Chem
supplied CERAPLAST 200 water reducing Admixture for the construction works
and also for testing in the laboratory which gave best results.
Structural Engineering Research Centre (SERC) - Chennai
Cera-Chem Chemical Admixtures has undergone detailed studies on
different methodologies regarding the compatibility of admixtures with mineral
admixtures like flyash, slag etc. under the experienced and able scientists
of SERC, detailing a report "Investigations
on a New Generation Superplasticizer for its use in cement concretes containing
flyash" which is enclosed
herewith.
Spencer Plaza -
Phase III, Anna Salai, Chennai
Cera-Chem supplied CERAPLAST 200 and CERAPLAST
300 for spencer plaza, Phase III project after a detailed and thorough testing
of our materials by M/s.Torsteel Research Foundation
In India, Chennai giving satisfactory reports regarding the
compatibility and confirming to standards , of Cera-Chem
admixtures.
Concrete Products & Construction Company, Sriperumbudur,
Chennai
CERAPLAST 300-M is in
the stream of regular supply of huge volumes for the manufacturing of pre-stressed
concrete lighting poles. Cera-Chem is the only supplier to this company which
manufacture the lighting poles for Southern Railways. Attainment of high strength,
reduction in water-cement ratio, waterproofing nature etc of CERAPLAST 300-M
resulted in the success of supply.
© Copyright Cerachem,2001