The Use of Pumice as Partial Substitution of Coarse Aggregate With The Addition Of Silica Fume
Pumice is a rock with the main characteristics of being light in color and very porous.
Pumice is a type of igneous rock formed from the explosive eruption of a volcano.
This rock is also known as silicate volcanic glass because it contains foam made of glass-walled bubbles.
Pumice is most widely used as a lightweight concrete aggregate and as an abrasive in various industrial products.
The purpose of this study was to determine the effect of pumice (pumice) as a partial substitute for coarse aggregate with the addition of silica fume on the compressive strength of concrete.
Silica fume is a fine pozzolanic material, where the silica composition is mostly produced from blast furnaces or the residue from the production of silicon and silicon iron alloys (known as a combination of microsilica and silica fume).
Silica fume is a filler in concrete that contains high levels of silica.
The use of pumice as a partial substitution of coarse aggregate, which is used are: 0%, 20%, 30% 50% and the addition of silica fume 5%.
The results showed the highest compressive strength at 0% pumice with the addition of 5% silica fume with an average compressive strength value of 23.26 Mpa.
Author : Haruna, Husain – Bosowa University