Pengaruh Abu Terbang terhadap Karakteristik Mekanik Beton Mutu Tinggi
Abstract: The hight strength
concrete has known and use in many construction in Indonesia.This is proven
with many contruction such as high rise building and long spanbridge that use
it. Right now many research about hight strenght concrete combinewith fly ash.
PT. RAPP as one of pulp and paper industries in Riau provience usecoal as
energy resources. The waste material from burning process produce flay ashthat
can be used. In this research, fine and coarse aggregate was take local
sourcethat easy find in Pekanbaru market. The basis material for the establishment
ofconcrete mixed with fly ash with various compositions and also assisted with
thesuperplasticizer to increase workabilty. Variation content of fly ash used
0%, 15%,20%, 25%, and 30% by weight of cement. The type of specimens was a
cylinderwith size 150 mm x 300 mm. The compressive strength is 40 MPa were
tested at 28days with a curing process. The test results showed that the
highest compressivestrength contained in concrete mixtures with fly ash usage
20% at 41.03 MPa. Thehighest value of splitting tensile strength is 3.18 MPa
with 20% fly ash content.Value modulus of Elasticity was 4.27 x 104 MPa. The
results of this study indicatethe use of fly ash in concrete mixtures optimal
in 20%. These were indicated withincrease compressive strength, tensile strength,
and modulus of elasticity, while theuse of fly ash above 20% would be decline.
Penulis: Alex Kurniawandy,
Zulfikar Djauhari, Elpin Tua Napitu
Kode Jurnal: jpbiologidd110238
