PENGARUH UKURAN PARTIKEL DAN KOMPOSISI SEMEN- PARTIKEL TERHADAP KUALITAS PAPAN SEMEN DARI CANGKANG KEMIRI (ALEURITES MOLUCCANA WILD)
ABSTRACT: The Objective of
this reseach were to evaluate partcile size and effect of cement- candle nut
shell ratio to cement board quality, and
to determine optimum particle size and cementparticle ratio that
resulting the best physical and mechanical properties of cement board. The size
of board was 25 cm x 25 cm x 1 cm with density target was 1 g/cm3. The ratio of
particle size were 30 & 80 mesh, and the cement particle ratio were 80:20,
70:30, 60:40. Magnesium cloride was used as catalys to accelerate hardening
process. The physical and mechanical propertis of board was evaluated according
to JIS A 5417-1992. The result showed that density, moisture content, water
absortion thickness swelling, MOE & MOR were 1.00-1.08 gr/cm3; 7.45-11.56%;
5.28-7.02%; 6.12-7.70%; 1.89-4.40%; 4.34-7.90%; 5176-9158 kg/cm2 dan
45.51-62.08 kg/cm2, respectively. All the physical properties had fulfill
standard requirement. Whereas MOR & MOE didn’t fulfilled JIS A 5417-1992.
The best treatment in this research was particle size of 30 mesh and
particle-cement composition of 80:20.
Keywords: cement board,
candlenut shell, cement – particle ratio, physical and mechanical properties
Penulis: Ira Lestari Simbolon,
Tit0 Sucipto, Rudi Hartono
Kode Jurnal: jpkehutanandd150205