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Sains Malaysiana 46(9)(2017): 1617–1623 http://dx.doi.org/10.17576/jsm-2017-4609-34
Influence of Water-to-Cement Ratio on the Compressive Strength of Cement-Biochar-Spent Ion Exchange Resins Matrix (Pengaruh Nisbah Air-Simen terhadap Kekuatan Mampatan Matriks
Simen-Bioarang-Resin Pertukaran Ion Terpakai) ZALINA
LAILI1*,
MUHAMAD
SAMUDI
YASIR1
& MOHD ABDUL WAHAB
YUSOF2 1Nuclear
Science Programme, School of Applied Physics, Faculty of Science
& Technology Universiti
Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia 2Malaysian
Nuclear Agency, Bangi, 43000 Kajang, Selangor Darul Ehsan, Malaysia Diserahkan:
7 Ogos 2014/Diterima: 23 April 2017 ABSTRACT The influence of water-to-cement
ratio (w/c) on the compressive strength of cement-biochar-spent
resins matrix was investigated. Spent resins waste from nuclear
reactor operation was solidified using cement with w/c ranging
from 0.35 to 0.90 by weight. In this study, biochar was used
as a cement admixture. Some properties of spent resins and biochar
were determined prior to the formulation study. Compressive
strength of harden cement-biochar-spent resins matrix was determined
at 28 days. The compressive strength of cement-biochar-spent
resins matrix was found to depend on the w/c and the amount
of spent resins added to the formulation. The immersion test
of cement-biochar-spent resins matrix showed no significant
effects of cracking and swelling. The compressive strength of
the cement-biochar-spent resins matrix increased after two weeks
in water immersion test. Keyword: Compressive
strength; radioactive waste; solidification; spent ion exchange
resins; water-to-cement ratio ABSTRAK Pengaruh nisbah air-simen
(w/c) terhadap kekuatan mampatan matriks simen-bioarang-resin
pertukaran ion terpakai telah dikaji. Sisa resin terpakai daripada
operasi reaktor nuklear telah dipejalkan dengan menggunakan
simen dengan w/c daripada 0.35 hingga 0.90. Dalam kajian ini,
bioarang digunakan sebagai bahan tambah kepada simen. Beberapa
ciri resin terpakai dan bioarang telah ditentukan sebelum kajian
formulasi. Kekuatan mampatan matriks simen-bioarang-resin terpakai
yang mengeras ditentukan pada umur 28 hari. Kekuatan mampatan
simen-bioarang-resin terpakai didapati bergantung kepada nisbah
simen-air dan jumlah resin terpakai yang ditambah kepada formulasi.
Ujian rendaman air bagi matriks simen-bioarang-resin terpakai
menunjukkan tiada kesan ketara keretakan dan pengembangan berlaku.
Kekuatan mampatan matriks simen-bioarang-resin terpakai didapati
meningkat selepas dua minggu ujian rendaman air. Kata kunci: Kekuatan
mampatan; nisbah simen-air; pemejalan; resin pertukaran ion
terpakai; sisa radioaktif RUJUKAN ASTM Standards C39/C39M-09a. 2010. Standard Test Method for Compressive
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172(2-3): 828-834. *Pengarang untuk surat-menyurat; email: liena@nuclearmalaysia.gov.my
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