ALTERNATIF PENGGUNAAN LIMBAH PABRIK KERTAS SEBAGAI PENGGANTI SEBAGIAN SEMEN (CEMENTITOUS) DALAM PEMBUATAN BETON
ABSTRACT: The demand of cement
in construction industry is increasing. The cement price is also increasing and
getting more expensive because the
raw material to
produce cement is
not renewable material.
Therefore, alternative material
is required to substitute
cement. The paper industry waste contains Aluminium Oxide
(Al2O3), Calcium Oxide (CaO), Magnesium Oxide
(MgO), Sulphur Trioxide
(SO3), and Silicon Dioxide (SiO2).
These compounds could
be used to subtitute raw material in producing
cement, and hopefully could answer this problem. This research objective is to
find the influence of
the use of
alumunium waste in concrete,
particularly the behaviour of
the physical characteristics of cement paste (setting time) and mechanic
characteristics of concrete (compressive
strength, modulus of elasticity, bond strength of reinforcement, and modulus of
rupture) with waste content 5% until 15%
from the composition of cement for concrete
fc’ =25 MPa. Results
of research indicated that the
waste was retarder
and the waste content less
than 10% were met the condition
of SNI 15-2094-1994. The use of 5% paper mill waste in a concrete mixture
still was permitted because modulus
of elasticity increased by 8% compared
to the concrete
without waste. Furthermore,
compressive strength waste concrete
5% is 26,7
MPa, where the
value is above fc’=
25 MPa. Bond
slip that was
reached during maximum P pulled
still on the minimal value permitted by ASTM C 234, and the modulus rupture (14.7%) was smaller compared
to the waste concrete 10%.
Keywords: setting time,
the waste of the paper
industry, compressive
strength, modulus of
elasticity, bond slip reinforcement,
modulus of rupture
Penulis: Norman Ray, Juis W U,
Eko R
Kode Jurnal: jptsipildd090008
