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All Journal Jurnal F. Teknik : RESULTAN JREC (Journal of Electrical and Electronics) SITEKIN: Jurnal Sains, Teknologi dan Industri BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Creative Research Journal Jurnal Kridatama Sains dan Teknologi Jurnal ABDIMAS (Pengabdian kepada Masyarakat) UBJ Jurnal Sains dan Teknologi Jurnal Bakti Bagi Bangsa Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri Innovative: Journal Of Social Science Research Jurnal Salome: Multidisipliner Keilmuan Jurnal Ilmiah Multidisiplin Ilmu Jurnal Riset Teknik Komputer
Ninik Paryati
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Journal : Jurnal Kridatama Sains dan Teknologi

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Analisis Hasil Kuat Tekan Beton Normal Terhadap Mix Design Kuat Tekan Beton Rencana Paryati, Ninik; Nuryati, Sri; Yulius, Elma; Agussalim, Anita Mardiana
Jurnal Kridatama Sains dan Teknologi Vol 6 No 02 (2024): JURNAL KRIDATAMA SAINS DAN TEKNOLOGI
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v6i02.1244

Abstract

Concrete Mix Design is the design of concrete using concrete constituent materials consisting of fine aggregate (sand), coarse aggregate (gravel), cement, water with added or not added ingredients, with the aim of obtaining the compressive strength of the planned concrete. One indicator of good concrete quality can be seen from the results of compressive strength testing, where the compressive strength of the resulting concrete must not be lower than the compressive strength of the planned concrete in the mix design. Mix design work must be carried out carefully and carefully because when determining the ratio and proportion of the concrete mixture you must pay attention to good concrete standards and meet the requirements, including compressive strength, workability (ease of work) and durability (concrete durability). The aim of this research is to find out what factors influence the compressive strength of normal concrete to be lower than the compressive strength of the planned concrete in the mix design, and to find out the difference between the compressive strength of the resulting normal concrete and the compressive strength of the planned concrete. The large number of concrete compressive strength results that do not match the strength of the mix design plan in many studies of Civil Engineering students at Islamic University 45 Bekasi is the basis for the need to carry out analysis so that the cause of the error can be identified, starting from filling in the mix design form, determining the ratio from the graph, the proportion of the mixture of the constituent materials. concrete, as well as the ratio of weight or volume of concrete used. The results of this research show that the compressive strength planned in the mix design was 20 Mpa, while the average compressive strength produced with a W/C of 0.59 was 17.5 Mpa, which decreased by 12.5%, while the average compressive strength produced with a W/C of 0.6 amounting to 22,667 Mpa, an increase of 13.3% from the design compressive strength, possibly because the water content is greater so it is easier to mold, so the concrete surface is flatter and the resulting compressive strength is greater. W/C is the ratio or comparison of the weight of water to the weight of cement and cementitious additives which are generally added to high quality concrete mixtures. The conclusion is that the factors that influence the compressive strength of normal concrete to be lower than the compressive strength of the planned concrete in the mix design are sand with a fine modulus of 3.0635, gravel with a fine modulus of 6.72. The average concrete compressive strength for W/C 0.59 is 17.5Mpa and the average concrete compressive strength for W/C 0.60 is 22,667 Mpa, so the difference between the two average compressive strengths is 5.2 Mpa, where with W/C 0.60 The resulting compressive strength of the concrete is better.
Analisis Debit Aliran Sungai pada Kali Sadang Cibitung Kabupaten Bekasi Falah, Fazrul; Yulius, Elma; Nuryati, Sri; Paryati, Ninik; Prihesnanto, Fajar; Darma, Eko; Gunarti, Anita Setyowati Srie
Jurnal Kridatama Sains dan Teknologi Vol 7 No 01 (2025): Jurnal Kridatama Sains dan Teknologi
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v7i01.1599

Abstract

The Sadang River is a primary channel in Cibitung Subdistrict, Bekasi Regency, which functions to channel water from several secondary channels, including those in Wanajaya Village and Wanasari Village. The existing conditions show that the Sadang River is prone to overflowing during the rainy season and is unable to optimally support the irrigation needs of the surrounding agricultural land. Therefore, a redesign of the channel system is necessary, including increasing the river's storage capacity through channel dimension improvements based on peak flow rates derived from hydrological analysis, as well as integrated watershed management efforts. The objective of this study is to analyse the river flow discharge in the Sadang River, which is divided into four segments, and to address the river flow discharge. The research method used in this study is a quantitative method with a hydrological and hydraulic analysis approach. The hydrological analysis process was carried out by determining the average rainfall and analysing the flood discharge using the Nakayasu Synthetic Unit Hydrograph (HSS) method. Subsequently, measurements of the existing channel dimensions were taken, spatial analysis was conducted using ArcMap 10.8 software, and the channel dimensions were re-planned based on the planned peak discharge results. The research results show that the existing flow rate of the Sadang River is 954.37 m3/sec, and the analysis of the peak flow rate of the Sadang River with a 10-year return period is 6107.47 m3/sec and a 25-year return period is 7513.01 m3/sec, with the same peak time of 2 hours. It is necessary to plan with a rectangular channel, the dimensions of the channel base width (b) = 28.7m and channel height (h) = 10m because the river channel is unable to accommodate the flow of flood discharge.
Co-Authors Adi Susanto, Riki Agussalim, Anita Mardiana Anita Mardiyana Agussalim Anita Setyowati Srie Gunarti Aris Setyo Wibowo Asrika, Sukwati Dewi Budi Rahmawati, Budi Ciptaningtyas, Yulia Darma , Eko Dian Dwi Putra Ekawati , Dian Ekawati , Inna Eko Darma Eko Darma Elma yulius Elvira Novita Tanjung Eransyah, Muhammad Fitra Fajar Prihesnanto, Fajar Falah, Fazrul Fathu Rahman Fikri, ZA Freedrick, Freedrick Gunawan Priyatno Irfan Nanda Pratama Irfan Saputra, Muhammad Luky Adrianto Maarif, Rizal Nurita, Firda Putri Prasetyawan, Dimas Tri Prasetyo, Setyo Priyatno, Gunawan Putra, Dian Dwi Rika Sylviana Rizal Maarif Saputro, Rizki Adityo Setyo Supratno Sri Marini Sri Nuryati Sri Nuryati Srigunarti, Anita Setyowati Supratno , Setyo Taufan, Acep Ali