KARAKTERISTIK PAPAN SEMEN BERBAHAN BAKU KAYU KEMIRI (Aleurites moluccana) YANG DIBUAT MELALUI INJEKSI KARBON DIOKSIDA (CO2) UNTUK PERCEPATAN CURING SEMEN
Abstract: The main problem of
cement board manufacturing technology is the length of curing time required to
achieve the complete hardening cement. In this reseach, acceleration curing
technology has been developed through injection of carbon dioxide (CO2). This
research was aimed to analyze the characteristics of cement boards that are
made by using CO2 to accelerate the curing process. The wood materials used in
this study was candlenut (Aleurites moluccana). Cement board is made with the
composition of wood, cement, water: 1: 2.5: 1.25 with a target density of 1 g
cm-3. CO2 injection is applied in three phase namely, liquid phase (15oC
temperature & 50 kg cm-2 pressure), gas phase (27 oC temperature & 50
kg cm-2 pressure), and super-critical phase (35 oC temperature & 80 kg cm-2
pressure). Each phase is combined with three levels treatment time, namely, 10,
30, and 60 minutes. As a control, cement board with a conventional curing
process that was conditioned for 28 days in room condition has been produced.
The research results indicated that CO2 injection applications in various
phases to produce cement board have better characteristics compared to that of
conventional cement board. Cement board using CO2 injection in liquid phase has
better characteristics compared to those of gas and super critical phases.
However the optimum conditions achieved in the injection time for 60 minutes,
while applications with supercritical CO2 has been able to achieve the best results
with 10 minutes of injection time.
Penulis: Suhasman, Herpina
Yanti, Ba kri
Kode Jurnal: jpkehutanandd120084
