STUDY ON USE OF BOTTOM ASH AND SILICA FUME IN CONCRETE
Under the guidance of Submitted by T.Sujatha Asha sedeq
Asst.Professor 138W1D8716 Civil Engineering Dept
STUDY ON USE OF BOTTOM ASH AND SILICA FUME IN CONCRETE
ABSTRACT
The possibility of substituting natural fine aggregate with
industrial by-products such as waste bottom ash offers technical,
economic and environmental advantages which are of great importance
in the present context of sustainability in the construction
sector.
Bottom ashis part of the non-combustibleresidue of combustion in
afurnaceorincinerator. In an industrial context, it usually refers
tocoalcombustion and comprises traces of combustibles embedded in
forming clinkers and sticking to hot side walls of a coal-burning
furnace during its operation. The portion of the ash that escapes
up the chimney or stack is, however, referred to asfly ash.
Theclinkersfall by themselves into the bottom hopper of a
coal-burning furnace and are cooled. The above portion of the ash
is referred as bottom ash.
Silica fume is an ultrafine powder collected as a by-product of
the silicon and ferrosilicon alloy production and consists of
spherical particles with an average particle diameter of 150 nm.
The main field of application is aspozzolanicmaterial for
concrete.
Under the guidance of Submitted by T.Sujatha Asha
SedeqAsst.Professor 138W1D8701Civil Engineering Dept
