SIFAT FISIK DAN MEKANIK KOMPOSIT SEMEN-CaCl2-AREN DENGAN VARIASI TEKANAN PENGEPRESAN

Dikdo Kus Indarto (Mahasiswa Jurusan Teknik Mesin FT Universitas Sebelas Maret Surakarta Jl. Ir. Sutami 36 A, Surakarta)
Dody Ariawan (Staff Pengajar Jurusan Teknik Mesin FT Universitas Sebelas Maret Surakarta Jl. Ir. Sutami 36 A, Surakarta)
WR Wijang (Staff Pengajar Jurusan Teknik Mesin FT Universitas Sebelas Maret Surakarta Jl. Ir. Sutami 36 A, Surakarta)

Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik
Vol 1, No 1 (2010): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 1 2010

The aim of this research is to investigate bending strength values of arengata-cement composite that based on variation of pressing pressure at manufacture. The composite consists of randomized arengata fiber as filler/reinforced (80 mesh size) and portland cement (50% weight ratio)-CaCl2 (10% weight ratio) mixing as matrix. The bending strength was characterized by Universal Testing Machine and the bending specimens based on ASTM D3039. The bending strength have been measured as a function of variation pressing pressure (70 Kg/cm2, 76 Kg/cm2, 82 Kg/cm2 dan 88 Kg/cm2). The experiment  result indicate that  bending strength increase with the increase of pressing pressure. As the result, the highest bending strength (125, MPa) and density (1,57 gr/cm3) were reached at 88 Kg/cm2 pressing pressure and the lowest water absorption was reached at 88 Kg/cm2 pressing pressure. Based on Scanning Electron Microscop observation, composite with 88 Kg/cm2 pressing pressure shows a good bond between matrik and fibre. Keywords : aren-cement composite, weight fraction of CaCl2 and bending strength.