Kontribusi Bubuk Slag Nikel di dalam Meminimalkan Dampak Intrusi Mikroorganisme terhadap Perilaku Fisik Material Beton
Abstrak
This paper is presents the experimental study on use of nickel slag powder in the minimization intrusion impact
of microorganism to physical properties of concrete materials. The intrusion of microorganism into concrete
pores is fungus (Aspegillus Niger) and yeast (Sacchromycodes ludwigi) groups. Both types of this microorganism produce organic matter is acetate acid (CH3COOH) able to react with chemical compound in concrete materials, especially calcium hydroxide and calcium silicate hydrate compound. The reaction affect on the increasing of porosity, permeability coefficient, and loss masses of concrete. The effect of intrusion of microorganism
can be minimized by use 16% nickel slag powder. For concrete without nickel slag powder, physical properties
tend to follow equation of geometry function (power equation), while the concrete of 16% nickel slag powder as
indicated by equation of saturated growth rate function.
of microorganism to physical properties of concrete materials. The intrusion of microorganism into concrete
pores is fungus (Aspegillus Niger) and yeast (Sacchromycodes ludwigi) groups. Both types of this microorganism produce organic matter is acetate acid (CH3COOH) able to react with chemical compound in concrete materials, especially calcium hydroxide and calcium silicate hydrate compound. The reaction affect on the increasing of porosity, permeability coefficient, and loss masses of concrete. The effect of intrusion of microorganism
can be minimized by use 16% nickel slag powder. For concrete without nickel slag powder, physical properties
tend to follow equation of geometry function (power equation), while the concrete of 16% nickel slag powder as
indicated by equation of saturated growth rate function.