1. Introduction
Selection of materials and technologies for the building
construction should satisfy the felt needs of the user as well
as the development needs of the society, without causing any
adverse impact on environment. In recent years, awareness
of environmental aspects has grown in the building and
construction sector. Manufacturing processes of building
materials contribute greenhouse gases like CO2 to the atmosphere.
There is a great concern and emphasis in reducing the
greenhouse gases emission into the atmosphere in order to
control adverse environmental impacts. Energy requirements
for production and processing of different building materials
and the CO2 emissions and the implications on environment
have been studied byBuchanan andHoney [1], Suzki et al. [2],
Oka et al. [3], and Debnath et al. [4] among others. These
studies pertain to New Zealand, Japan and India.