Utilization of Kelut’s Volcanic Ash as the Aggregate Mixture of Concrete Brick

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.

• Periodical: Key Engineering Materials (Volume 718)
• Pages: 196-200
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.718.196
• Online since: November 2016
• Authors: Siti Salamah*, Maryudi Maryudi
• Keywords: Concrete Brick, Kelut’s Volcanic Ash, Mechanical Characteristics

References

[1] E.D. Bélizal, F. Lavigne, J.G. Galiard, D. Grancher, Geomorphology, 03643 (2011) 1-11.

[2] H.E. Wibowo, A. Harijoko, H. Humaida, A.A. Wati, M. Nakagawa, Proceedings of the Cities on Volcanoes 8. 2014 September 9-13, Yogyakarta, Indonesia (2014).

[3] J. Horwell Claire, Grain-Size analysis of volcanic ash for the rapid assessment of respiratory health hazard, J. Environ. Monit. 9 (2007) 1107-1115.

DOI: 10.1039/b710583p

[4] E.T. Wahyuni, Determination of chemistry Composition volcanic ash from Merapi Mountain Eruption", Journal of Human and Environmental, 19 (2012) 150-159.

[5] S. Salamah, The Characterization of Merapi volcanic ash as adsorbent for batik dyes adsorbent, Report Research, Research and Development Institute, Ahmad Dahlan University, (2013).

[6] S. Salamah, The use of Merapi volcanic ash for as adsorbent dyes removal from batik waste water, Report Research, Research and Development Institute, Ahmad Dahlan University, (2014).

[7] B. Gunawan, Kelut's volcanic ash has big benefits", Warta Muhammadiyah, (2014).

[8] A. Mellado, C. Catalan, N. Bouzon, M.N. Borracheo, M. J. Monzo., J. Paya, Carbon footprint of geopolymer mortar : study of the contribution of the alkaline activating solution and assessment of an alternative route, 4 (2014) 238.

[9] W. Pahir John, Green chemistry for sustainable cement production and use, Green Chemistry, 8 (2006) 763-780.

[10] I. Milicevic, D. Bjegovic, R. Siddique, Experimental research of concrete floor block with crushed bricks and tiles aggregate, Construction and Building materials, 94 (2016) 775-783.

DOI: 10.1016/j.conbuildmat.2015.07.163

[11] B. Wintoko, Success in business of concrete brick and paving block, Pustaka Baru Press, Yogyakarta, Indonesia, (2014).

[12] SNI (National Standard of Indonesia) 3-0349-1989, Concrete brick for wall construction.