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All Journal Jurnal Rekayasa Sipil dan Desain Jurnal Rekayasa Hijau Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Abdi Geomedisains Organisms: Journal of Biosciences Indonesian Journal of Environment and Sustainability Issues Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung
Andandaningrum, Della
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Dentistry Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Medicine & Pharmacology Nursing Veterinary

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Pengaruh Waktu Perendaman Terhadap Uji Kuat Tekan Paving Block Menggunakan Campuran Tanah dan Kapur dengan Alat Pemadat Modifikasi ANDANDANINGRUM, DELLA; Iswan, Iswan; Setyanto, Setyanto
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 4 (2016): Edisi Desember 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i4.495

Abstract

Paving block is a composition ingredient construction made from mixture of portland cement or a kind of adhesive hydrolysis, water, and aggregates with or without other ingredients. Concrete bricks can colored as original color or given substance color on composition and used for page both inside nor outside construction. In this study the process of manufacture of paving blocks will use a mix of soil and chalk. Moreover, soaking of the paving blocks that are expected to increase the strength of paving blocks is according to SNI 03-0691-1996. Soil samples tested were from Kota Baru, South Lampung. Composition blend of soil and chalk with variation time to soak is 7 days, 14 days, 21 days, and 28 days, as well as to the treatment of pre-combustion and post-combustion of the sample of paving blocks. Based on the results of physical testing the original soil, USCS classify soil samples as fine-grained soil and belong to the group ML. Results from this study is the manufacture of paving blocks using silt soil and chalk soil material that does not meet the specifications of SNI 03-0691-1996. This is because the weakness on modification compactor which are use when make a sampel. For the compressive strength of paving blocks pre-combustion and post-combustion are best shown in soaking time of 28 days. The compressive strength that generated as a whole still does not meet the specifications of the paving block SK SNI 03-0691-1996 that is a minimum compressive strength at 85 kg/cm2. But value of water absorption meets the specification 03-0691-1996 which is 3%-10%.Keyword : Paving block, slit soil, compressive strength, soil burning.
Assessment of Water Quality Using Macrobenthos as Bioindicators in Pier 2 Kota Agung, Tanggamus Regency Suci Wulan Pawhestri; Andandaningrum, Della; Arrumaisha Vina Yofanka
ORGANISMS: JOURNAL OF BIOSCIENCES Vol. 6 No. 1 (2026): Organisms: Journal of Biosciences
Publisher : Pusat HKI, Paten, dan Publikasi Ilmiah Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/sz9vpt14

Abstract

Kota Agung Pier 2 in Tanggamus Regency is a coastal area with high port activities that may affect aquatic environmental conditions. Previous studies on macrobenthos diversity in this area are limited, highlighting the need for updated ecological assessments. This study aimed to evaluate macrobenthos diversity as a bioindicator of water quality using a quantitative descriptive method across three observation stations. At each station, five sampling points with three replicate core samples (10 cm diameter, 10 cm depth) were collected during low tide in May 2025, ensuring consistent environmental conditions. The parameters measured included macrobenthos composition, temperature, depth, water clarity, pH, and dissolved oxygen (DO). Macrobenthos identified included the families Terebellidae, Ophiuridae, Conidae, and Mytilidae. Shannon-Wiener diversity (H′) ranged from 0.29–0.35 (low), evenness (E) from 0.04–0.05, and Simpson’s dominance (C) from 0.28–0.87, reflecting environmental stress and uneven species distribution. The Family Biotic Index (FBI) ranged from 3.81–3.86, indicating good water quality with low organic pollution. Physical and chemical parameters were within the standards set by Government Regulation No. 22 of 2021. Overall, the results show that while macrobenthos communities experience environmental pressures, the water at Pier 2 Kota Agung still supports aquatic life. This study provides updated data for ecological monitoring and informs sustainable coastal management
Co-Authors Arrumaisha Vina Yofanka Aulia Ulmillah Dyah Indriana Kusumastuti Endro Prasetyo Wahono Fauziah, Hanifah Nur indah marlina ardianti Iswan Iswan Ma'rifah, Siti Melitania, Melitania Munawarah Panggabean, Siti Panggabean, Siti Munawarah Sari, Dwi Meyta Sari, Mita Permata Setyanto Setyanto Suci Wulan Pawhestri Suci Wulan Pawhestri Tama, Dwi Sulis Triyana, Agis Vantika, Marsela Ayu Vera Chania Putri Vitria Susanti