PENGARUH RASIO FLY ASH TERHADAP ALKALI AKTIVATOR DAN MOLARITAS NAOH TERHADAP SIFAT MEKANIK AGREGAT BUATAN GEOPOLIMER BERBASIS FLY ASH DENGAN METODE COLD BOND PELLETIZATION

JARED, ALAND KURNIA ZAWAWI and Adhitya, Bimo Brata and Costa, Anthony (2023) PENGARUH RASIO FLY ASH TERHADAP ALKALI AKTIVATOR DAN MOLARITAS NAOH TERHADAP SIFAT MEKANIK AGREGAT BUATAN GEOPOLIMER BERBASIS FLY ASH DENGAN METODE COLD BOND PELLETIZATION. Undergraduate thesis, Sriwijaya University.

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Abstract

In industrial construction, aggregate acts as the main component in the manufacture of concrete, asphalt and other construction materials. Natural aggregates derived from natural resources such as crushed stone, gravel and sand, have been an important resource in infrastructure development projects for many years. However, the increase in global demand for aggregates, both locally and globally, has resulted in a decrease in the availability of quality natural aggregates. In the early 2000s, a new approach to artificial aggregate production emerged known as the cold bond pelletization (CBP) process, which was applied to dry powdered fly ash. In this method, fly ash particles agglomerate in an inclined rotating pan at room temperature to form fly ash pellets. This kind of research is carried out through experimental methods in the laboratory. In the CBP method, the Aggregate Impact Value (AIV) test was carried out to study the effect of variations in the ratio of fly ash to alkaline activator (FA/AA) and variations in the molarity of NaOH on the mechanical properties of the aggregate. The effective molarity value for artificial aggregate by the geopolymer cold bond pelletization method is 15 molar which has the lowest AIV proportion value with an average value of 3.45%. The AIV value of geopolymer aggregates from variations FA/AA 3 to variations FA/AA 3.25 experienced an average decrease of 0.69%. Then it decreased again from the FA/AA variation of 3.25 to the FA/AA variation of 3.5 of 1.72%. The effective value of the FA/AA ratio of aggregates made by the geopolymer cold bond pelletization method is 3.5 FA/AA with an average value of 2.49%. Values decreased by an average of 0.75% at molarities of 13 molars to 15 molars. However, it experienced an increase in the 17 molar variation of 0.52%. The effect on the physical value of the aggregate was that there was a decrease in the value of the physical properties of the aggregate from a variation of 13 mol to 15 mol, but an increase from 15 mol to 17 mol. Exceptions to the volume weight test. The effect on physical properties is that the higher the FA/AA, the higher the aggregate physical values except for the water content test.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	agregat geopolimer, cold bond pelletization, fly ash, fly ash/alkali aktivator, molaritas NaOH, sifat fisik agregat, sifat mekanik agregat
Subjects:	T Technology > TH Building construction
Divisions:	03-Faculty of Engineering > 22201-Civil Engineering (S1)
Depositing User:	Aland Kurnia Zawawi Jared
Date Deposited:	22 Sep 2023 03:38
Last Modified:	22 Sep 2023 03:38
URI:	http://repository.unsri.ac.id/id/eprint/128991

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