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All Journal Jurnal Sains dan Teknologi Jurnal Abdi Masyarakat Multidisiplin
Anastasia Septya Wardaningrum
Universitas Dian Nusantara
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Sosialisasi Inovasi material Menggunakan Silica Fume dan Fly Ash sebagai Bahan Tambah pada beton Anastasia Septya Wardaningrum; Era Agita Kabdiyono; Ahmad Fachri Ilham Al Akmal; Iqbal Rusdiani; Kukuh Faizal Akhmad; Muhammad Khoirul Dzakwan
 Jurnal Abdi Masyarakat Multidisiplin Vol. 5 No. 2 (2026): Agustus: JURNAL ABDI MASYARAKAT MULTIDISIPLIN
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jammu.v5i2.2797

Abstract

This title describes an activity (such as a seminar, workshop, or presentation) aimed at disseminating information (socialization) about an innovation in the field of construction materials. Many small-scale construction practitioners, craftsmen, or the general public still use conventional concrete mixing methods (only cement, sand, gravel, water). They do not understand that the addition of additives can significantly change the properties of concrete. Fly Ash (fly ash from coal combustion) and Silica Fume (residual silicon metal production) are industrial wastes that are abundantly produced. If not utilized, these materials often become environmental pollutants. In the field, this waste is often considered useless, even though it has high pozzolanic properties. Conventional concrete often has quite large micropores, making it susceptible to water seepage and cracking over time. Without additives, it is difficult to achieve high-quality concrete or watertight concrete at the greatest cost efficiency. In the field, cement use is often wasteful. Replacing some cement with Fly Ash or Silica Fume is a global solution that has not been widely implemented at the local/community level. The main objective of this activity is to bridge modern concrete technology with its applications in society to create better and more sustainable construction. The main focus of innovation is the use of two specific materials: Silica Fume and Fly Ash. These two materials—often byproducts or waste from other industries—are presented as additives mixed into concrete.
Analisis Kapasitas Saluran Drainase terhadap Debit Rencana di Kelurahan Bidara Cina, Kecamatan Jatinegara, Jakarta Timur Anastasia Septya Wardaningrum; Jalaludin Jalaludin; Stevi Cahyani
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 3 (2026): Juni 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i3.8676

Abstract

Bidara Cina is a flood-prone area in East Jakarta due to high rainfall, limited channel capacity, and low elevation along the Ciliwung River. This study analyzes the existing drainage channels' capacity to accommodate design runoff discharge based on BMKG rainfall data and hydrological parameters. Methods include calculating design rainfall intensity (Gumbel/Mononobe method), design discharge (Rational Method), and existing capacity (Manning’s formula) using secondary data from BMKG, BIG, BPS, and East Jakarta Water Resources Sub-department. Main channel segments were selected as representative samples. Based on frequency analysis of 20-year extreme data (2006–2025) from Halim Perdanakusuma Station, the design rainfall intensity is 78.71 mm/hour for a 5-year return period and 96.60 mm/hour for a 10-year return period. Evaluation of 15 channel segments shows that macro channels (Ciliwung River and Ciliwung Waterway) and the main connecting channel (West Otista Raya Street) meet the required capacity. However, 7 secondary channel segments in densely populated areas (RW 06, RW 07, and RW 11) fail to meet capacity or overflow due to narrow dimensions and the lack of local retention polders.
Co-Authors Ahmad Fachri Ilham Al Akmal Era Agita Kabdiyono Iqbal Rusdiani Jalaludin, Jalaludin Kukuh Faizal Akhmad Muhammad Khoirul Dzakwan Stevi Cahyani