Ditemukan 2 dokumen yang sesuai dengan query
From years to years the use of aggregate for maintence and new pavement construction increases, wjile the resources of crushed stone decrease......
JJJ 26 (1-2) 2009
Artikel Jurnal Universitas Indonesia Library
Andriayani, author
We carried out silicon extraction from the natural resources of Tanjung Tiram Asahan, Batu Bara Regency, North Sumatra through variation of heating temperatures and magnesiothermic reduction. Prior to the extraction, the sand from the natural resource was refined until the solid white silica powder was separated. The reaction conditions were...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:7 (2015)
Artikel Jurnal Universitas Indonesia Library
