DEVELOPMENT OF COMPRESSIVE STRENGTH OF CONCRETE FROM A BINDER OF BOTTOM ASH AND CALCIUM CARBIDE RESIDUE

Abstract

In this study, two waste materials, calcium carbide residue and bottom ash,
were used as a binder in concrete. Bottom ash from the Mae Moh power plant
in Lampang province was mixed with calcium carbide residue, a waste obtained
from an acetylene gas production industry in Samutsakorn province. The
mixture was used as a binder for casting concrete. This paper focused on the
development of compressive strength of the concrete made from the two waste
materials to replace cement in concrete. Also, the cement not exceeding 55
kg/m3 was used to promote and increase the compressive strength of concrete.
The results demonstrated that the compressive strengths of concrete without
cement were as high as 29.7 and 36.8 MPa at 28 days and 90 days, respectively.
Also, the adding 55 kg/m3of cement in the concrete mixture produced the
compressive strength of 44.3 and 51.4 MPa at 28 and 90 days, respectively. For
cement concrete to have the compressive strength of 47 MPa at 28 days, the use
of cement in the mixture of 450 kg/m3 was needed. The results also illustrated
that the use of concrete made from calcium carbide residue and bottom ash as a
binder provided a satisfactory compressive strength and also reduced the use of
cement in concrete mixture.