Final Project Report on Use of Fly Ash in Cement (India)
Date
1995
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Abstract
A project on "Use of fly ash in Cement (India)" was started
from 1st April, 1992 at Shriram Institute, Delhi (India) in collaboration with CANMET, Ottawa and sponsored by IDRC, Canada. In this project, three "Annual Progress Reports" for the
period: (a) .1st April 1992 to 31st March, 1993 (b) 1st April,
1993 to 31st March, 1994 and (c) 1st April 1994 to 31st March,
1995 have already been submitted to the sponsor. During these
periods it has been possible to produce ordinary Portland Cement
meeting all the requirements specified in Indian Standard
Specification No.269 using upto 14.5% fly ash in the raw mix. During the current period of operation of this project from
01.04.1995 to 30.09.1995, twenty experiments were conducted in
the rotary kiln using up to 20% fly ash in the raw mix. Most of
the cement plants in India are firing coal in the kiln to
provide the necessary heat and the ash generated gets mixed up
with the raw mix. To compensate this ash, a few experiments have
also been done by mixing appropriate quantity of coal in the raw
mix. The batches were evaluated chemically, by X-Ray Diffraction
and optical microscopic technique. The mechanical properties viz compressive strength at 3 days, 7 days & 28 days curing, Blain
fineness, setting time, autoclave expansion test etc. were
evaluated. It has been possible to prepare portland cement meeting all
the specifications of Indian Standard No. 269
upto 18% fly ash in the raw mix.
Description
Appendices included
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IDRC Final Report
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Keywords
INDIA, CONSTRUCTION MATERIALS, CEMENT, TESTS, NEW PRODUCTS, INDUSTRIAL INNOVATIONS, PILOT PROJECTS, INDUSTRIAL PROCESSES