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Joined: 26 Jan 2003
|Posted: Tue Nov 23, 2004 5:22 am Post subject: Hindustan Construction Co.- CDM Project
|HCC - moves one more step ahead . . . . !!!
HCC has moved one more step ahead. To make enviro-friendly construction we
are doing our level best. Please go through following email. For more
Mr. Srinivasa RAO - SRINIVASA@hccindia.co.in
Message From RAO P Srinivasa
Sent: Wednesday, November 10, 2004 3:22 PM
Subject: Hindustan Construction Co.- CDM Project
All Civil/Structural Engineers,
The greatest challenge for the Construction Industry in the present
generation is realization of projects aimed at infrastructure development in
harmony with the 'Sustainable Development' concepts. Under the context of
Civil Construction, Sustainable Development can be defined as judicious use
of naturally occurred materials and also adoption/ application of
construction techniques/ methods/ practices for various construction
activities, without result in to or potentially lead to any adverse
Cement is the most dominant and essential construction material among other
construction materials. Unfortunately, cement production process is not
environment friendly. Besides consuming huge thermal energy the production
process lead to emission of huge quantity of CO 2 which is a Green house gas
causing 'global warming'. To achieve the sustainable development in
Construction sector, it is imperative to minimize the consumption or to
replace some of these naturally occurred materials with the alternative
environment friendly materials, which are basically by-products/or waste
materials from other industries such as fly ash from thermal power plants.
Past and current research has successfully demonstrated that fly ash can be
used as an alternative/ supplementary cementitious material in production of
Concrete for not only to achieve sustainable development in the Construction
Industry but also to produce durable concrete structures which lasts longer.
Higher cement content in Concrete mix create many problems like higher
shrinkage, enormous heat of hydration in case of mass concrete, thermal
cracks and many other problems. The above problem of higher cement content
in concrete shall be overcome by partial replacement of the cement with fly
ash a supplementary cementitious material; and usage of minimum mixing water
in concrete by using the superplasticizers, a high range water reducing
admixtures. This process is defined as the Lower Cement content Concrete
Technology (LCCT), which has been developed by HCC R&D Centre. HCC R&D
Centre has a technological collaboration with CANMET- CANADA for promotion
of use of fly ash in cement concrete in India.
The LCCT helps in improving the consistency and workability of fresh
concrete. Because of the additional fines present in such concrete mix, the
amount and rate of bleeding and heat of hydration of the concrete is
reduced. With the fly ash present, the rate of strength gained is lower
initially, but the strength grows continuously over a reasonable period to
reach the target acceptable strength.
As a result of this LCCT project activity, large-scale OPC demand would be
avoided. HCC is envisaging using around one million tonne of fly ash in next
ten years, there by reducing approximately one million tonne of CO2
emission. Avoidance of CO2 emissions qualifies for Clean Development
Mechanism (CDM) benefits under the Kyoto Protocol to which India is a
The Kyoto Protocol establishes the CDM to enable industrialized countries to
finance green house gases (such as CO2, etc) emission reduction projects in
developing countries and receive credit for doing so. The revenue generated
due to such benefits (reducing CO2 emissions) will be used to fund the OPC
reduction activities proposed by HCC.
As a part of the CDM project activity development process, the project
design document explaining LCCT has been already submitted to the CDM
executive board, Bonn, Germany and Ministry of Environment and Forest, New
Delhi, India. As part of the process, it is necessary to conduct the local
stakeholder consultation process. All relevant project documents (Project
Report, Project Design Document and Environmental Impact Assessment) and
stakeholder comment form are provided in our website
http://www.hccindia.com/aboutus/cdm.htm. This web page is also linked to the
CII website for more viewers.
So, I request you to go through the above link to have more details about
LCCT and also post your comments if any, as part of the local stakeholders.
The stakeholder consultation committee shall review the posted comments.
Chief Corp. Executive- IMS, R&D
Hindustan Construction Co. Ltd.
LBS Marg, Vikhroli(w),
MUMBAI - 400083
Phone: 022 2577 5959
Hindustan Construction Company, Mumbai, India
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