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All Journal Cerucuk. Prodi S1 T. Sipil. Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Jurnal Teknik Sipil
Nurwidayati, Ratni
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EVALUATION OF POTENTIAL UTILIZATION OF SEA SAND IN LONTAR VILLAGE, KOTABARU REGENCY AS FINE AGGREGATE IN CONCRETE Taufik, Muhammad; Nurwidayati, Ratni
CERUCUK Vol 7, No 6 (2023): CERUCUK, VOL. 7 NO. 6 JUNE 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/crc.v7i6.12901

Abstract

Not all areas have sufficient resources for concrete needs. Coastal areas are areas that are difficult to obtain suitable sand for concrete needs. One of these coastal areas is Lontar Village, Kotabaru Regency, because of this, the people of Lontar Village, Kotabaru Regency, choose to use sea sand as a concrete material. The use of sea sand in Lontar Village, Kotabaru Regency is not subject to any treatment even though sea sand has a high salt content and uniform and fine grains, this can reduce the strength of the concrete. In this study, several treatments were carried out, namely no treatment, washing treatment and flush treatment, and using percentage variations of 0%, 30%, 50%, 70% and 100% sea sand. The parameters reviewed in this study were the compressive strength of concrete, split tensile strength of concrete and flexural strength of concrete.Concrete mix planning follows SNI 7626-2012. With untreated sea sand as a control, the sea sand treatment was followed by washing and flushing to reduce the salt content in the sea sand. Using several percentages of sea sand to add variety to the grain of sea sand. The treatment method used is fresh water immersion. The sample used was a mortar mixture in the form of a cube of 5 cm x 5 cm x 5 cm, and a concrete mixture in the form of a cylinder of 15 cm x 30 cm and a beam of 50 cm x 10 cm x 10 cm.The results showed that the highest compressive strength of mortar was in 30% sea sand washing treatment with 29.71 MPa. The highest compressive strength of concrete is at 0% sea sand with 20.38 MPa. The highest split tensile strength of concrete is at 30% sea sand with 1.92 MPa. And the highest flexural strength of concrete is at 30% sea sand with a flexural force of 3.05 MPa. Keywords: Sea Sand, Compressive Strength, Split Tensile Strength, Flexural Strength.
Bimbingan Teknis Pemanfaatan Limbah Abu Batu pada Green Paving Block untuk Pemberdayaan UMKM di Banjarbaru Krasna, Wiku Adhiwicaksana; Chairunnisa, Nursiah; Pratiwi, Ade Yuniati; Nurwidayati, Ratni; Barkiah, Ida; Darmawan, Arya Rizki
Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) Vol 4, No 3 (2025)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/ilung.v4i3.14333

Abstract

Indonesia merupakan salah satu negara dengan pembangunan infrastruktur yang sangat pesat. Pembangunan sektor jalan merupakan  salah satu pembangunan yang sedang masif dilakukan, terutama pada jalan dengan perkerasan kaku. Perkerasan kaku khususnya paving block banyak digunakan pada tempat khusus yang memerlukan kekuatan lebih untuk menahan beban sekunder. Pengaplikasian paving block pada pembangunan ruas jalan sudah seringkali kita jumpai pada banyak daerah di Indonesia. Penggunaan paving block  juga dinilai lebih ekonomis, efektif dan efisien daripada penggunaan perkerasan beton bertulang, paving block  juga memiliki tingkat kemudahan dalam pemasangannya. UMKM (Usaha Mikro Kecil dan Menengah) penyedia paving block di Banjarbaru hanya mengetahui bahwa pembuatan paving menggunakan semen dan pasir saja, mereka belum mengetahui bahwa paving juga dapat digunakan material limbah. Dalam hal ini Tim Pengabdian kepada Masyarakat Fakultas Teknik mengusulkan penggunaan limbah abu batu sebagai material pengganti pasir dalam pembuatan green paving block. Bimbingan teknis yang dilakukan termasuk penjelasan terkait prosedur pembuatan paving block berdasarkan SNI 03-0691-1996, metode curing atau perawatan, dan metode pengujian paving block. Berdasarkan hasil kuisioner terhadap peserta bimbingan teknis diketahui rata-rata 14,33% menyatakan sangat jelas, 33,33% menyatakan jelas, 47,67% menyatakan cukup jelas, dan 4,67% menyatakan kurang jelas.
KAJIAN JEMBATAN A-HALF THROUGH ARCH DENGAN SNI 1725:2016 DAN SNI 2833:2016 (STUDI KASUS JEMBATAN RUMPIANG KABUPATEN BARITO KUALA) Chairunnisa, Nursiah; Pratiwi, Ade Yuniati; Cahyadi, Ahmad; Karim, Abdul; Nurwidayati, Ratni; Prakoso, Puguh Budi
JURNAL TEKNIK SIPIL Vol 13, No 1 (2024): Volume 13 Nomor 1 Mei 2024
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v13i1.37056

Abstract

The Rumpiang Bridge is a Half Through Arch type bridge in Marabahan City, Barito Kuala District. This bridge was constructed in 2003 using loading regulations based on the BMS 1992 regulations. In 2016, the government issued the bridge loading regulations SNI 1725:2016, which introduced differences in loading compared to BMS 1992. Therefore, a structural modeling of the bridge was carried out to determine its capacity using the updated loadings from SNI 1725:2016 and SNI 2833:2016. The research utilized the Midas Civil software for assistance. The assessment of the bridge's capacity was based on the deflection values experienced by the bridge. The analysis results indicated that the maximum deflection values occurred under the combination of Static Load Case 1 and Dynamic Load Case 1. For Static Load Case 1, the maximum deflection values at the center span according to BMS 1992 and SNI 1725:2016 were 47.37 cm and 47.25 cm respectively. For Dynamic Load Case 1, the maximum deflection values at the center span according to BMS 1992 and SNI 1725:2016 were 30.108 cm and 28.41 cm respectively. On the other hand, under seismic loading based on SNI 2833:2016, the displacement experienced by the bridge due to the extreme combination 1 was 13.933 mm. Based on the conducted analysis, it is evident that the loading requirements from SNI 1725:2016 yield deflection results that still meet the criteria compared to the loading requirements from BMS 1992.
Co-Authors Abdul Karim Ade Yuniati Pratiwi Ahmad Cahyadi **) Darmawan, Arya Rizki Ida Barkiah MUHAMMAD TAUFIK Nursiah Chairunnisa Prakoso, Puguh Budi Wiku Adhiwicaksana Krasna