RANI KARTIKA SARI, NIM 112022060 (2026) PENGARUH CAMPURAN FLY ASH DAN SERAT POLYPROPYLENE TERHADAP DURABILITAS MORTAR PADA PERENDAMAN AIR RAWA. Skripsi thesis, Universitas Muhammadiyah Palembang.

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh variasi substitusi fly ash dengan penambahan serat polypropylene (PP) 1% terhadap durabilitas mortar pada kondisi siklik air rawa. Penelitian dilakukan secara eksperimental menggunakan benda uji mortar berbentuk kubus berukuran 5×5×5 cm dengan variasi kadar fly ash sebagai substitusi sebagian semen. Parameter yang dianalisis meliputi kuat tekan dan berat jenis mortar pada kondisi normal dan setelah mengalami siklus perendaman-pengeringan (wet–dry cycle) menggunakan air rawa. Hasil penelitian menunjukkan bahwa penambahan fly ash dan serat polypropylene memengaruhi durabilitas mortar. Variasi substitusi fly ash sebesar 2% (FA2) menghasilkan kinerja optimum dengan kuat tekan tertinggi sebesar 21,33 MPa pada kondisi normal dan 24,80 MPa pada kondisi siklik. Nilai berat jenis mortar cenderung menurun seiring meningkatnya kadar fly ash, terutama setelah mengalami kondisi siklik akibat bertambahnya porositas. Namun, penurunan berat jenis tidak secara langsung menyebabkan penurunan kuat tekan. Secara keseluruhan, kombinasi substitusi fly ash sebesar 2% dan penambahan serat polypropylene 1% terbukti mampu meningkatkan durabilitas mortar pada kondisi siklik air rawa. This study aimed to analyze the effect of fly ash substitution with the addition of 1% polypropylene (PP) fiber on the durability of mortar under cyclic swamp water exposure. The research was conducted experimentally using 5×5×5 cm mortar cube specimens with various fly ash substitution levels as partial cement replacement. The evaluated parameters included compressive strength and density under normal conditions and after cyclic wetting–drying exposure using swamp water. The results showed that the incorporation of fly ash and polypropylene fiber significantly affected mortar durability. The optimum performance was achieved at 2% fly ash substitution (FA2), producing the highest compressive strength of 21.33 MPa under normal conditions and 24.80 MPa under cyclic conditions. Mortar density generally decreased with increasing fly ash content, particularly after cyclic exposure due to increased porosity. However, the reduction in density did not directly lead to a decrease in compressive strength. Overall, the combination of 2% fly ash substitution and 1% polypropylene fiber effectively improved the durability of mortar under cyclic swamp water conditions.

Item Type:	Thesis (Skripsi)
Additional Information:	Pembimbing : 1. Ir. Revisdah, M.T 2. Dr. Verinazul Septriansyah, S.T., M.T
Uncontrolled Keywords:	Durabilitas Mortar, Fly Ash, Serat Polypropylene, Air Rawa, Kuat Tekan. Mortar Durability, Fly Ash, Polypropylene Fiber, Swamp Water, Compressive Strength.
Subjects:	Teknik Sipil > Bahan-bahan Bangunan
Divisions:	Fakultas Teknik > Teknik Sipil (S1)
Depositing User:	Mahasiswa Fakultas Teknik
Date Deposited:	09 Sep 2026 06:22
Last Modified:	09 Sep 2026 06:22
URI:	http://repository.um-palembang.ac.id/id/eprint/37329

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