PENGARUH KOMPOSISI NANO SEMEN TERHADAP KUAT TEKAN MORTAR
ABSTRACT: The micro voids in
the cement paste of cementitious material drastically reduce the load-carrying
capacity of the element, due to the reduction in area. On the other hand, the
weak interface between aggregates and mortar induces micro-crack initiation and
promote crack propagation. It therefore becomes curial to reduce the voids in
the mortar, and promotes a better hydration degree of cement. A method that has
been proven effective is the use of nano-cement particles. The smaller cement particles
will result in a better hydration process, and create less large ettringites
and calcium hydrates. This research work studied the effect of nano-cement
percentage in the mortar mix by the substitution method. The ratio in weight of
the nano-cement with respect to the normal cement ranged from 0%, 20%, 40%,
60%, 80%, to 100%. The specimens sized 50 × 50 × 50 mm were tested at the age
of 28 days to obtain their compression strength. The cement-to-sand proportion
was 1 to 2.75, while a water-cement-ratio of 0.485 was maintained throughout
the experiments. Two cement types, PCC (Portland Composite Cement) and PPC
(Portland Pozzolane Cement), all Indonesian based products, were compared to
obtain a picture of the overall cement condition in Indonesia, and the
effectiveness of the nano-cement use to each of the types.
Penulis: Dion Aji Fadlillah,
Frisky Sustiawan, Han Ay Lie, Purwanto
Kode Jurnal: jptsipildd140533
