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All Journal Simposium II UNIID 2017 CANTILEVER
Hastuti, Yulia
Jurusan Teknik Sipil Teknik Sipil, Fakultas Teknik Universitas Sriwijaya
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation

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Journal : CANTILEVER

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PERKUATAN LERENG DENGAN GEOGRID DAN SHEET PILE PADA JALAN KIKIM BESAR (KM. 256) KOTA LAHAT Hastuti, Yulia; Wahyuni, R.A. Mitha; Dewi, Ratna
CANTILEVER Vol 5, No 1 (2016): Cantilever
Publisher : Jurusan Teknik Sipil & Perencanaan Fakultas Teknik Universitas Sriwijaya

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Abstract

Landslide is one of the most common problems in improving road structures. One of the landslide cases occurred in the area of Kikim Besar, Lahat District precisely at Km.256. To obtain an optimal solution of the problem requires proper analysis in the reinforcement of the slope. In this study used an alternative slope reinforcement by using sheet pile or geogrid reinforcement. The purpose of this research is to know the condition of natural slope stability at that location and the effect of stability slope change with retrofitting structure using sheet pile or geogrid. This research uses modeling with Plaxis 2D program. Modeling was made to obtain the safety factor values on the natural slopes on the slopes 1-1, 2-2, and 3-3 pieces, comparing the safety factor of each slope before and after the reinforcement, and comparing the safety factor of each slope after reinforcement using geogrid type UX 1700 and sheet pile type W325 A 1000. From the research results obtained that the strengthening of geogrid and sheet pile can increase the value of slope safety factor. The sheet pile modeling has the greatest safety factor value for each slope of 1.794 for slopes 2-2 and 1,532 for slopes 3-3 compared with geogrid reinforcement that produces a safety factor value of 1,325 for slopes 2-2 and 1,343 for slopes 3-3 pieces.
PENGARUH PENAMBAHAN SERBUK CANGKANG KEONG TERHADAP NILAI CBR TANAH LEMPUNG EKSPANSIF Hastuti, Yulia; Muhtarom, Ahmad; Iryani, Sakura Yulia; Derisqi, Azmi; Dewi, Ratna
CANTILEVER Vol 7, No 1 (2018): Cantilever
Publisher : Jurusan Teknik Sipil & Perencanaan Fakultas Teknik Universitas Sriwijaya

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Abstract

n this research, soil improvement is done by using waste of snail shells (LCK) in Desa Ulak Kembahang II, Kecamatan Lubuk Keliat, Kabupaten Ogan Ilir, Sumatera Selatan and soil from Tanjung Api-api Area, Gasing , Kabupaten Banyuasin, Sumatera Selatan . The soil used is a type of problematic soil that is expansive clay, which is known LL value (Liquid limit) more than 35%. The LCK used is then used as powder. Furthermore, there are 5 variations of percentage of addition of snail shell powder (SCK) with soil, and give the curing time is for 0, 1 and 7 days. Results from CBR Unsoaked (US) Testing resulted in the addition of SCK at a certain percentage and the curing time could increase the value of CBR expansive clay soil. The highest value of CBR Unsoaked on variation of percentage of SCK increase as much as 11% in the curing curing time for 7 days that is equal to 5.6% for the value of CBR US which in the original land has a CBR value of 3.5%. The result analysis of SEM-EDX test on soil mixture and SCK known SCK works as filler which fill the cavity found in soil grains and the main element of soil known as SiO2 and Al2O3 forming binder material with CaO.
Co-Authors Arfie Safitri Aztri Yuli Kurnia Derisqi, Azmi Dewi, Ratna Dewi, Ratna Meilianti Bindari Mirka Pataras Muhtarom, Ahmad Nanda Putri Anindita Rizki Prasetya Person Sakura Yulia Iryani Wahyuni, R.A. Mitha