6. Paper Maryudi-UAD. Key Engineering Material

Maryudi, Maryudi (2016) 6. Paper Maryudi-UAD. Key Engineering Material. TransTech Publications.

Text 6. 2016-Key Engineering Material .718.196.pdf Download (459kB)

Abstract

Kelut volcano had erupted in February 2014. The eruption has produced various materials
i.e. ash, sands, etc. Volcanic ash contains various elements such as Si, Al, Ca, Fe, Na and P. It is
potential to be used as raw material for cement-based products. This study investigates the
utilization of Kelut’s volcanic ash as the raw material of cement-brick. The Kelut’s volcanic ash
was analyzed to determine the contents of iron (Fe), aluminum (Al), and silica (Si). The volcanic
ash was screened to obtain 100 mesh size of ash. The volcanic ash of 100 mesh size was mixed with
cement, sand, and water with ratio of 1 kg cement, 2 kg volcanic ash, and 15 kg sand (1 :2 :15). The
mixture of volcanic ash, sand and cement was poured and pressed in the concrete brick mold. The
concrete brick was then aerated in a room for hardening process. The experiment was repeated for
another ratio of raw material (cement: volcanic ash: sand = 2:1:15) and the age of the concrete brick
(46, 61, 75 and 89 days). Concrete bricks were analyzed to determine the quality and the mechanical
characteristics. The results has shown that Kelut’s volcanic ash has a composition of aluminum (Al)
4.707%, silica (SiO2) 23.4%, and iron (Fe) 3.85%, that is like the composition of the cement
materials. The concrete bricks which are made of cement, Kelut’s volcanic ash, and sand with the
ratio of 2:1:15 has a maximum compression strength of 18.85 MPa at the age of 89 days. The
addition of Kelut’s volcanic ash has improved the strength of concrete brick. However, too much
volcanic ash will lead to increasing compression strength

Item Type:	Other
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisi / Prodi:	Faculty of Industrial Technology (Fakultas Teknologi Industri) > S1-Chemical Engineering (S1-Teknik Kimia)
Depositing User:	Maryudi ST, MT, Ph.D
Date Deposited:	18 Nov 2019 05:40
Last Modified:	18 Nov 2019 05:40
URI:	http://eprints.uad.ac.id/id/eprint/15756

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