Abstract:
Due to a rapid increase in the construction industry in past few
decades especially in concrete constructions, demand of
construction materials have increased manifold. Cement, the
most important part of concrete mostly determines the cost of
large project, as it is the most costly and essential material used
in concrete. Its manufacturing process contributes significantly
to greenhouse gases and also accounts for almost 7 percent of
world carbon dioxide co2 gas production. Use of
complementary cementitious materials in concrete is in practice
all over the world, such as fly ash, ground granulated blast
furnace slag, rice husk ash and many other mineral admixtures.
But the most interesting is the replacement of cement with
baggase ash produced from combustion of sugarcane baggase.
Baggase is obtained as a fibrous residue after crushing and juice
extraction in sugar factories and is reused as fuel in boilers in the
same industry for electricity generation. The resulting ash
known as SCBA ( usually bottom ash and in a smaller
proportion fly ash) is a valuable material for cement and
concrete production due to presence of high amount of silica and
aluminium oxides. The successful utilization of baggase ash in
concrete would not only lower the cost of construction but also
substantially contribute to reduce green house gases.
Along with bagasse ash replacement with cement, another
material known as Quarry dust or stone dust which is usually
