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Jurnal Teknik Sipil Unika Soegijapranata : G-SMART (Geoteknik, Struktur, Manajemen Konstruksi, Sumber Daya Air, Transfortasi)

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Published by Universitas Katolik Soegijapranata

ISSN : 26205297 EISSN : 26205297 DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture Engineering Transportation

Jurnal G - SMART : Jurnal Teknik Sipil Unika Soegijapranata yang meliputi Geoteknik, Struktur, Manajemen Konstruksi, Sumber Daya Air dan Transportasi.

Arjuna Subject : -

Articles 96 Documents

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The Advantage of Moringa oleifera Powder Addition in Natural Polymer Modified Concrete Mixture Rr. M. I. Retno Susilorini; Budi Santosa; VG. Sri Rejeki; M.F. Devita Riangsari; Yan’s Dianaga Hananta
G-SMART Vol 1, No 1: Juni 2017
Publisher : Universitas Katolik Soegijapranata Semarang

Polymer modified concrete has become innovative materials to increase durability and sustainability of concrete. It is now important to develop natural polymers that are ‘greener’ than other chemical polymers. Therefore, this research wants to investigate compressive strength of natural polymer modified concrete added with Moringa oleifera powder, with and without its skin. This research was conducted experimentally in laboratory. There three compositions concrete mixture of several concrete cylinder specimens with dimension 10 cm x 20 cm which were cured in plain water for 7, 14, and 28 days. Compressive strength of normal concrete were designed as about f’c = 30 MPa. All specimens were tested for compressive strength after curing. This research meets conclusions: (1) Natural polymer modified concrete added by Moringa oleifera with skin specimens have compressive strength 82.85% compared control specimens; (2) Extreme high compressive strength has achieved by natural polymer modified concrete added by Moringa oleifera without skin specimens that have compressive strength 165,2% compared control specimens; and (3) Natural polymer made of Moringa oleifera is proven to increase the compressive strength of concrete

Pengaruh Penggunaan Zat Admixture “X” Terhadap Peningkatan Kuat Tekan Beton (Studi Kasus “Pasir Cepu dan Kerikil Rembang”) bryan ramadhan ramadhan; Yunita Perdanawati; David Widanto; Budi Setiyadi
G-SMART Vol 2, No 1: Juni 2018
Publisher : Universitas Katolik Soegijapranata Semarang

This research uses Cepu sand fine aggregate as the main material of making of concrete. Cepu sand has high mud and calcium content compared to Muntilan sand.In order for Cepu sand to be used as a concrete material, it is necessary to add an integral waterproofing admixture with plasticizer content to help the aggregate density. This study, varied admixture with 0%, 50%, 100%, 150%, 200% (20ml per 1kg cement) composition. All test objects totaling 80 pieces are used for compressive strength testing with the size of 15 × 15 × 15 cm test specimens.The result of laboratory test showed that Cepu sand concrete without addition of admixture with 14 days drying was found to be the average of compressive strength of 290 kg / cm2, while the highest was obtained by addition of 100% integral waterproofing admixture with an average value of 392 kg / cm2. While on 28 days drying, the average compressive strength value is 352 kg / cm2 without using integral waterproofing admixture, while the highest is obtained with addition of 100% integral waterproofing admixture with average value of 509 kg / cm2. With additional admixture the Cepu sand has increased the compressive strength higher than Muntilan sand concrete.

Tinjauan Geometrik Jalan Raya Pada Titik-Titik Rawan Kecelakaan (Blackspots) Di Kota Semarang Denis Bramedio Herlambang; Rosie Febri Febri Setyadi; Rudatin Ruktiningsih
G-SMART Vol 1, No 2: Desember 2017
Publisher : Universitas Katolik Soegijapranata Semarang

This study is based on traffic accidents in Indonesia which increased from year to year, theincrease of the accident rate resulted in the loss of material or casualties. Frequent accidentsare classified as blackspots (accident-prone points). Then to minimize the blackspot, there is aneed to study the safety of traffic more deeply, one of the efforts is to conduct a road geometricreview. In the geometric overview of the highway there are horizontal alignments and verticalalignments as the main points of discussion, where horizontal alignments discuss the speed,bend length, stop visibility, side free areas, bend extension and super elevation. While thevertical alinemen discuss about the cleverness, and vertical arch. Analysis of horizontalalignment and vertical alignment based on RSNI 2004 criteria. The results of this study indicatethat there are some discussion of horizontal alignment and vertical alignment that is not inaccordance with the criteria of RSNI 2004, the discussion includes the length of the curve, thestop visibility, and the side free area for alinemen horizontal, and vertical curvatures andvertical alignments.

Durabilitas Blok Beton Sandwich dengan Isian Styrofoam di Lingkungan Agresif Aditya Kenanga; M Rizky Darmawan; Rr.M.I Rretno Susilorini; David Widianto
G-SMART Vol 1, No 2: Desember 2017
Publisher : Universitas Katolik Soegijapranata Semarang

The research aimed to observe durability of sandwich concrete block with styrofoam inaggressive environment which was modeled by curing media. The curing media used in thisresearch are plain water, sea water, brakish water, and tidal flooding water. The curing wasconducted for 28 days and followed by compressive strength test. The result of this researchfound that maximum compressive strength was 1,76 MPa with tidal flooding water as curingmedia, followed by 1,67 MPa with brakish water as curing media, and also 1,64 MPa with seawater as as curing media, and the lowest compressive strength was 1,36 MPa with plain wateras as curing media.

KAJIAN KARAKTERISTIK DAS (Studi Kasus DAS Tempe Sungai Bila Kota Makassar) Angelica Mega Nanda; Eko Prasetyo Nugroho; Budi Santosa
G-SMART Vol 1, No 1: Juni 2017
Publisher : Universitas Katolik Soegijapranata Semarang

Kota Makassar menjadi salah satu kota dengan tingkat pembangunan infrastruktur yang tinggi dan menyebabkan perubahan lahan yang sangat signifikan. Fenomena tersebut berdampak pada pola aliran di permukaan (surface flow) dan wilayah resapan air. Tujuan penelitian tugas akhir ini adalah untuk mengetahui karakteristik hidrologi DAS Tempe Sungai Bila di Kota Makassar.Penelitian ini menggunakan model hidrologi dengan bantuan software Hydrologic Engineering Centers Hydrologic Modeling System (HEC-HMS). Hidrograf yang dihasilkan HEC-HMS berupa outflow diolah untuk mengetahui karakteristik DAS Tempe Sungai Bila.Hasil penelitian menunjukan bahwa parameter yang digunakan pada simulasi tersebut sesuai dengan parameter yang ada. Dari analisis outflow didapatkan karakteristik hidrologi DAS Tempe selama tahun 2003 sampai dengan tahun 2013 antara lain debit maksimum rata-rata sebesar 81,46 mm; debit minimum rata-rata sebesar 1,05 mm; koefisien regime rata-rata sebesar 170,48 mm dan koefisien storage sebesar 0,06 mm.

Durabilitas Mortar Polimer Termodifikasi Alami dengan Amylum dan Bahan Tambah Madu Nanda Isdian Prasetyo; Gerald Arsa Adhiyaksa Abiyoga; Rr. M.I. Retno Susilorini; Budi Santosa
G-SMART Vol 2, No 1: Juni 2018
Publisher : Universitas Katolik Soegijapranata Semarang

The research aimed to investigate the durability of natural modified polymer mortar with amylum and honey admixture of aggressive environment that was modeled by 3 curing media, sea water, brakish water, and tidal flooding water. There were 855 specimens of mortar cubes with addition of amylum of 0,1%, 0,2%, 1%, 2%, and 5% and also honey of 0%, 0,03%, and 0,03%. All specimenswere cured and distributed into 3 curing medias for 7, 14, and 28 days. The result of this research met conclusion that optimum compressive strength was achieved by specimen with composition 0,1% amylum and 0,03% honey that was cured by sea water.

Kinerja Susut Pada Blok Beton Sandwich Dengan Isian Styrofoam Natalia Desi Ratnawati; Irviana Dyah Permatasari; Rr.M.I Rretno Susilorini; David Widianto
G-SMART Vol 1, No 2: Desember 2017
Publisher : Universitas Katolik Soegijapranata Semarang

Shringkage is a volume change unrelated to the load, where the volume of concrete is reduceddue to reduced water content due to hydration or evaporation or evaporation. The objective ofthis research is to obtain the shrink parameter on sandwich block with Styrofoam stuffing inthe form of visual, damage, saturated and shrinkage in the medium of marine and freshwatersoak for 28 days and get the graph between time and depreciation. This research uses twoexperimental method that is by way of oven and not dioven in fresh water and marine waterimmersion media, each of which is submerged media in the form of 5 pieces of specimen length37 cm, width 15,5 cm, and thickness 7.5 cm which if in total amounted to 10 concrete blocks,the concrete block is tested in laboratory materials Soegijapranata Unika by using thecontainer as a medium of immersion media and the length of the sorong as a tool length, width,thickness of the block and the scale that has a precision of 0.1 for get the weight of the concretethen if it gets the result will result in the amount of shrinkage. The results obtained from theshrinkage will be concluded whether the sandwich panel with Styrofoam stuffing can be usedas a bearing wall.

STABILISASI TANAH EKSPANSIF DENGAN BAHAN TAMBAH GIPSUM (STUDI KASUS DI KAWASAN INDUSTRI CANDI BLOK K-18, SEMARANG) Ibnu Widiantoro; Fauzi Ahmad
G-SMART Vol 1, No 1: Juni 2017
Publisher : Universitas Katolik Soegijapranata Semarang

Jenis tanah yang cukup banyak ditemui di Kota Semarang adalah tanah ekspansif. Tanahekspansif adalah tanah lempung yang memiliki karakteristik kembang susut yang cukup besarserta tingkat plastisitas yang tinggi. Permasalahan bangunan yang berdiri di atas tanahekspansif salah satunya terdapat di Kawasan Industri Candi yang berada di Jalan GatotSubroto Semarang pada lokasi Blok K-25. Permasalahan yang terjadi terletak pada tembokyang pecah dan retak retak serta lantai yang bergelombang. Salah satu upaya yang akandilakukan oleh penulis untuk meningkatkan kestabilan tanah ekspansif adalah melakukanpenelitian terhadap penambahan bahan tambah gipsum dengan persentase penambahan yangberbeda. Dalam penelitian ini digunakan penambahan gipsum dengan persentase gipsumsebanyak 0%, 15%, 20% dan 25% dari berat tanah kering. Uji yang dilakukan di laboratoriummeliputi uji mineral tanah, index properties, atterberg limit, uji saringan, uji hidrometer, ujikompaksi, uji swelling dan direct shear. Berdasarkan uji yang telah dilakukan denganpenambahan gipsum, dapat disimpulkan bahwa gipsum memiliki pengaruh yang cukup baikdalam meningkatkan stabilisasi tanah lempung ekspansif.

Kajian Potensi Erosi Di Daerah Aliran Sungai Babon Menggunakan Permodelan GeoWEPP Revangga Dandha Pratama; Dimas Jalu Setyawan; Budi Santosa
G-SMART Vol 3, No 2: Desember 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i2.1892

At the time of the high intensity of rainfall in Semarang, the water contained in the Babon River had overflowed, resulting in flooding of parts of the area adjacent to the Babon river flow. This matter has many factors, there are erosion and sediment produced. This study aims to study erosion potential in the Babon watershed, using the Geospatial Interface for Water Erosion Prediction Project (GeoWEPP) modeling. The results of the modeling are the amount of erosion rate and erosion distribution in the study area. The erosion prediction period in this study is in 2006 - 2015. Data needed in GeoWEPP operation are Digital Elevation Model, climate data, land use data, and soil type data. Based on the GeoWEPP process in the Babon watershed the erosion rate was 36.1 tons / ha / year and the sediment yield was 26075.2 tons / year. From the results of the erosion rate produced divided by the reasonable erosion rate get the Erosion Hazard Level index (TBE) of 3.6 or including medium TBE. Based on the distribution of erosion maps produced, the area experienced the greatest erosion rate in the Ungaran region. This is due to the fact that it belongs to the highlands and has a high slope value.

Kajian Kapasitas Sungai Sengkarang Kabupaten Pekalongan Dengan Menggunakan HEC-RAS Johanes Among Timur; Abraham Daksa; Budi Santosa
G-SMART Vol 3, No 1: Juni 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i1.1570

Flooding was natural disasters the minimize the impact or can be avoided when you know a source of the problem. The increase in discharge flood most affected by the existence of the to watershed ( DAS ), and the form of profile river that could not be accommodate flooding luminance stretch out. The purpose of this research is to evaluate capacity river Sengkarang in order to accommodate flooding luminance stretch out, and give the alternative solution flood. The necessary data in the form of rainfall daily from year 2001 - 2016 in five station rain, namely station Karang Gondang, PS.Kletak station, Karangsari station, Pekalongan station, and Kutosari station. Daily rainfall data is then processed into hourly rain data using Mononobe method. Then from the parameters that have been specified in the insert into HEC-HMS software. The result of HEC-HMS this is discharge flood simulations with the period repeated 2 annual of 322.8 m3 / s, the period repeated 5 annual of 582.6 m3 / s, the period repeated of 10 years of 765.1 m3 / s, the period repeated 25 annual of 1034.3 m3 / s, the period repeated 50 annual of 1148.9 m3 / s. after obtained discharge simulations with the period repeated certain then afterward did the simulation profile river sengkarang by using HEC-RAS software. This permodelan it can be found in which a part is happened flood. Therefore done solution altermatif of normalization river.

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