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Influence of Water to Cement Ratio (W/C) on Slump Flow and Compressive Strength of Self Compacting Concrete (SCC) Containting Portland Pozzolan Cement Tjaronge, Muhammad Wihardi; Djamaluddin, Abdul Rahman; Lemba, Nocolaus Rahmayanto; Kalesaran, Ichsan
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 1, Edisi XXXIV, PEBRUARI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (140.995 KB) | DOI: 10.14710/mkts.v14i1.3940

Abstract

Fly ash atau abu terbang adalah limbah pembakaran batu bara yang membutuhkan area pembuangan atau penimbunan yang luas. Penimbunan abu terbang dalam jumlah yang banyak dan terus menerus akan menyebabkan terjadinya polusi yang merusak ekosistem di sekitarnya. Pencampuran abu terbang dengan semen Portland untuk membuat sejenis semen Portland Pozzolan dapat memberikan keuntungan ekologi dan membuat dan menghemat sumber daya alam. Penelitian ini menggunakan sejenis semen Portland Pozzolan yang mengandung abu terbang untuk membuat Self Compacting Concrete (SCC). Perbandingan air terhadap semen (W/C) merupakan suatu parameter yang penting dalam campuran beton. Mix desain dengan beberapa variasi (W/C) yaitu 30,35, 40% dibuat untuk mempelajari pengaruh W/C terhadap slump flow dan kuat tekan SCC.Kata kunci: semen Portland Pozzolan, Self Compacting Concrete (SCC), perbandingan air terhadap semen (W/C), slump flow, kuat tekanPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3940[How to cite: Tjaronge, M.W., Djamaluddin, A.R., Lemba, N.R. dan Kalesaran, I., 2006, Influence of Water to Cement Ratio (W/C) on Slump Flow and Compressive Strength of Self Compacting Concrete (SCC) Containting Portland Pozzolan Cement, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 1, pp. 106-111]
Determining The Depth of Hard Soil Layers Using Geoelectric Resistivity and Cone Penetration Test Methods (Case Study: Kelurahan Bontoramba Kecamatan Somba Opu Kabupaten Gowa) Nurhasanah, Nurhasanah; Muhiddin, Achmad Bakri; Djamaluddin, Abdul Rahman; Niswar, Muhammad
JIPF (Jurnal Ilmu Pendidikan Fisika) Vol 9, No 1 (2024): January 2024
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/jipf.v9i1.4853

Abstract

Hard soil layers can impact the loading, stability, and behavior of structures in the geotechnical field. Comprehensive understanding of the depth and properties of hard soil layers can aid in designing suitable structures. Therefore, this study employed the resistivity geoelectric and Cone Penetration Test (CPT) methods to map the features of hard soil layers. Resistivity data were acquired through measurements utilizing the geoelectric method, while data on cone resistance, shear resistance, and friction ratio were gathered through field measurements using the CPT tool. The collected data was analyzed comprehensively to obtain a complete understanding of soil conditions. Based on resistivity values, the results indicated the research site comprises alluvium, very dry clay, and dry sandy soil. Based on the CPT test, it is determined that the layers contain mixtures of fine-grained soils, clay, silt, and sand. Therefore, it can be inferred that the dense sand lithology constitutes the hard soil layer geologically. The employment of both approaches delivers supplementary details on soil features and depth.
The Performance of Geosynthetic Reinforcement Road Pavement Over Expansive Soil Subgrade Hairulla, .; Harianto, Tri; Djamaluddin, Abdul Rahman; Arsyad, Ardy
Civil Engineering Journal Vol 10, No 12 (2024): December
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-12-020

Abstract

One of the problems faced in infrastructure development, especially roads, is problematic soils, including expansive soils, which are distributed around 20% of national road construction in Indonesia. Geosynthetics are reinforcement materials that can be used to overcome problematic soils. The study aimed to determine the behavior of expansive soil with geosynthetic reinforcement against swelling potential and swelling pressure in the wetting cycle. The research utilized an experimental approach involving three test concepts. The first was a control test without reinforcement. The second included a combination of geogrid, geotextile, and geomembrane layers, while the third utilized an H2Rx reinforcement layer. Analysis was carried out on the development potential and pressure; the test was carried out for 57 days using displacement sensors and pressure sensors, and data recording was carried out every 5 seconds using a computer. The findings from the results of this study indicated that the presence of reinforcement using a geosynthetic reinforcement layer can overcome the behavior that occurs in expansive soils with swelling potential and swelling pressure. The novelty of this research is the inclusion of a geosynthetic reinforcement layer on expansive soil combined with a drainage layer in the pavement subgrade. Doi: 10.28991/CEJ-2024-010-12-020 Full Text: PDF
DAMPAK AKIBAT AKTIFITAS PENAMBANGAN PASIR DI KOTA SORONG Asriadi, Asriadi; Rahim, Irwan Ridwan; Djamaluddin, Abdul Rahman
Jurnal Inovasi Pendidikan dan Sains Vol 4 No 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v4i1.1472

Abstract

Sand is one of main material for construction. The need of sand is very high for construction development in Sorong for structure or infrastructure work. The research aimed (1) to analyze how wide is the economic impact of the on the community as the result the activties of the sand mines; and (2) to suggest processing management in order to overcome the flood impact on the sand mining activities in sorong city, particularly in kilometer 10 area of Kampung Bugis. the research design was in the formof work program which was arranged so that research could be carried effectively and efficiently. in the stage, the aerialgraphy and overlay of the map of the mine region so that the extent of the mine from year to year could be identified. the research stages were group into the library studym data collection, survey and field observation. and the tecnique of data analysis used the method of eclac and ahp. the research result indicated tha extent of the mining had reached 60%, and consequently the area of flood puddle had increase to80%. the cost had also increased every year, and highest increase occured in 2016, when the cost of the damage and loss wass Rp 12.6 billion, and the cumulative cost had reached Rp 77.14 billion. the management effort to overcome the flood could be divided into 5 criteria of the management efforts, namely costs, availability, realization, time and friendly enviroment, with 3 alternatives, legal reinforcement, construction of structures and social engineering. thus, itt can be include tha the occurance of the flood was influenced by the extent of the sand mining, sothat the sediment scraping reduced the capacity of the river retain water.