Kualitas Beton SCC dengan Bahan Tambah Superplasticizer dan Limbah Serat Kenaf (Hibiscus Cannabinus L.)
Authors: Rustendi Iwan , Seputri Zulvanida Hallin , Poerwodihardjo Ferdinandes Eddy 
Published: October 2024

INTISARI
Self Compacting Concrete (SCC) adalah inovasi beton berupa beton cair
memadat mandiri tanpa adanya bantuan alat penggetar berupa vibrator.
Karakteristiknya yang cair memudahkan pada proses pengadukan. Dalam
penelitian ini dilakukan pengujian kuat tekan, kuat tarik belah, dan kuat lentur
beton SCC. Bahan yang ditambahkan ke dalam adukan adalah limbah serat
kenaf dengan persentase 0%, 0,25%, 0,5%, 0,75%, dan 1% serta
superplasticizer consol N11 LN dengan persentase 1,25%. Masing-masing
pengujian dibuat 4 sampel benda uji dengan pengujian pada umur 28 hari. Dari
hasil pengujian kuat tekan beton SCC mengalami penurunan kuat tekan seiring
dengan ditambahkannya variasi limbah serat kenaf. Pada pengujian kuat tarik
belah dan kuat lentur beton SCC mengalami kenaikan seiring ditambahkannya
variasi limbah serat kenaf. Pada penambahan LSK 1 tidak memenuhi syarat
sebagai beton SCC dikarenakan diperoleh nilai slump flow 52,71 cm. Limbah
serat kenaf pada kuat tekan beton SCC maksimum yaitu pada LSK 0,25
mencapai 27,61 MPa akan tetapi beton tanpa serat tetap yang mencapai kuat
tekan tertinggi sebesar 28,69 MPa, sedangkan penggunaan limbah serat kenaf
pada kuat tarik belah beton SCC maksimum yaitu pada LSK 0,75 mencapai
2,77 MPa, sedangkan penggunaan limbah serat kenaf pada kuat lentur beton
SCC maksimum yaitu pada LSK 0,75 mencapai 4,29 MPa.
Kata Kunci:
Self Compacting Concrete
Limbah serat kenaf
Kuat tekan
Kuat tarik belah
Kuat lentur
ABSTRACT
Self Compacting Concrete (SCC) is a concrete innovation in the form of liquid
concrete that compacts independently without the help of a vibrator. Its liquid
characteristics make the mixing process easier. In this research, compressive
strength, split tensile strength and flexural strength of SCC concrete were
tested. The ingredients added to the mixture are kenaf fiber waste with
percentages of 0%, 0.25%, 0.5%, 0.75% and 1% as well as consol N11 LN
superplasticizer with a percentage of 1.25%. For each test, 4 samples of test
objects were made with testing at the age of 28 days. From the test results, the
compressive strength of SCC concrete experienced a decrease in compressive
strength along with the addition of variations in kenaf fiber waste. In testing
the split tensile strength and flexural strength of SCC concrete increased as
variations in kenaf fiber waste were added. The addition of LSK 1 does not
meet the requirements as SCC concrete because the slump flow value is 52.71
cm. Waste kenaf fiber has the maximum compressive strength of SCC concrete,
namely at LSK 0.25, reaching 27.61 MPa, but concrete without fixed fiber
reaches the highest compressive strength of 28.69 MPa, while the use of waste
kenaf fiber for maximum split tensile strength of SCC concrete is at LSK 0.75
it reaches 2.77 MPa, while the use of kenaf fiber waste on the maximum
flexural strength of SCC concrete is at LSK 0.75 it reaches 4.29 Mpa.
Keyword:
Self Compacting Concrete
Kenaf fiber waste
Compressive strength
Split tensile strength
Flexural strength