Puput Risdanareni, Adjib Karjanto, Januarti Jaya Ekaputri, Poppy Puspitasari, Febriano Khakim
This paper presents the result of study on using volcanic ash which obtained from Mount Kelud as fly ash replacement material to produce geopolymer concrete. Test was conducted on geopolymer concrete mixture with 0%, 25%, 50% and 100% fly ash replacement with Kelud volcanic ash. Sodium hydroxide (NaOH) and Sodium Silicate (Na2SiO3) were applied as alkaline activator. The mechanical properties was assessed by compressive strength while workability of fresh concrete by slump test. Producing geopolymer concrete with volcanic ash is possible with maximum replacement of up to 50%. Research and development on eco-friendly material such as volcanic ash is very useful to help reconstruction process of volcanic disaster around the world. © 2016 Trans Tech Publications, Switzerland.
Department of Civil Engineering, Universitas Negeri Malang, Jalan Semarang no.5, Malang, East Java, Indonesia; Department of Civil Engineering, ITS, Kampus ITS Surabaya, 60111, Indonesia; Center of Excellence Geopolymer and Green Technology (CEGeoTech), School of Materials Engineering, University Malaysia Perlis (UniMAP), P.O. Box 77, Kangar, Perlis, Malaysia; Department of Mechanical Engineering, Universitas Negeri Malang, Jalan Semarang no.5 Malang, East Java, Indonesia; Undergraduate Student in Department of Civil Engineering, Universitas Negeri Malang, Jalan Semarang no.5, East Java, Malang, Indonesia
