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PENGARUH KOLOM PASIR TERHADAP KONSOLIDASI TANAH LEMPUNG LUNAK Listyawan, Anto Budi; Wiqoyah, Qunik; Ningsih, Rena; Widhi Satriyana, Marten Widhi Satriyana Ramadlan
Eco Rekayasa Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

TheÂ road weaving near Sragen city Central Java has been daily problemÂ inÂ last decade. TheÂ existing of high expansiveÂ clay soil in subgrade below the road foundation has been identified as the major cause of this problem. Sand Column become one solution to improve the subgrade since it can ab-sorb the waterÂ from the void of clay soil and drain into the channel. The re-search develops a model of Sand column in laboratorium. The box of 1.0 m x 0.4 m x 0.4 m has been created. 15 cm diameter of sand column then installed at the toe and samples for consolidation test are taken from various distances from the centre of column (i.e. 16.67 cm; 33.33 cm; and 50 cm). The result shows that the Sand Column can improve the soft clay soil in terms of consolidation. The coefficient of consolidation increases as the compression index drops. Consequently, the consolidation settlement can be re-duced significantly.

TRAINING RENOVASI DAN PERAWATAN POMPA HIDRAM DI DESA KARANG PELEM, KECAMATAN KEDAWUNG, SRAGEN Sudjatmiko, Aliem; Wiqoyah, Qunik; Ujianto, Mohammad
WARTA WARTA Volume 10, Nomor 1, Maret 2007
Publisher : Universitas Muhammadiyah Surakarta

Technological Pump the Hidram technology pump to use the basework style of grafitasi earth and designed in such a way till work the pumpwork automatically without there external energi for example energi oil.Constraint which often bother the [job/activity] pump the hidramÂ is notoptimal is component function pump the effect stuffing up of dirt andcomponent damage pump. The pump Hidram equiped some kinds ofspillway, for example functioning water spillway to arrange awaking ofcurrent and awaking of pressure irrigate the , air-trap to arrange awakingof air composition in water. Especial benefit air good for condition of[isnature of water from nature of water which incompresible become semiincompresible so that punching influence irrigate the/hummer water notdestroy the material pump specially save the tekan.Tabung depress tofunction to catch and maintain the yielded water pressure. Component pumpthe hidram consisted of the Reservoir concentration, fast pipe, spillway oflimbah,balance weight, air spillway, spillway depress and save to depressand also other supporter that is pipe between. In course of evaluation[done/conducted] repair problem of water spillway using rubber of vehiclerut/rubber konveyor, and if/when reckoned from a economic side pumpthis very efficient because energi used to create the pressure irrigate tocome from laboring earth gravitation style air.Benefit from spillway irrigateand also air spillway can be arranged in such a way till work the pump canwork automatically and will labour on during balance constraint workthe pump not annoyed. From repair result got a technical age spillwaymount and stay more 6 month;moon and loss / water leakage causing tolessen the pressure can be avoided. To the condition of in such a way tillwork the pump automatically [done/conducted] a trial and error

PENGARUH KOLOM PASIR TERHADAP KONSOLIDASI TANAH LEMPUNG LUNAK Listyawan, Anto Budi; Wiqoyah, Qunik; Ningsih, Rena; Widhi Satriyana, Marten Widhi Satriyana Ramadlan
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

The road weaving near Sragen city Central Java has been daily problem in last decade. The existing of high expansive clay soil in subgrade below the road foundation has been identified as the major cause of this problem. Sand Column become one solution to improve the subgrade since it can ab-sorb the water from the void of clay soil and drain into the channel. The re-search develops a model of Sand column in laboratorium. The box of 1.0 m x 0.4 m x 0.4 m has been created. 15 cm diameter of sand column then installed at the toe and samples for consolidation test are taken from various distances from the centre of column (i.e. 16.67 cm; 33.33 cm; and 50 cm). The result shows that the Sand Column can improve the soft clay soil in terms of consolidation. The coefficient of consolidation increases as the compression index drops. Consequently, the consolidation settlement can be re-duced significantly.

Sudut Tenang Tanah Pasir-Lempung Pada Kondisi Runtuh Anto Budi Listyawan; Renaningsih Renaningsih; Qunik Wiqoyah; Aditya Galih Pradana
Borneo Engineering : Jurnal Teknik Sipil Volume 4 Nomor 2 Tahun 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v4i2.1441

The soil layer is the combination of many types as well as the soil in the slope area. The soil in the slope is frequently a mixture of clay and sand. The stability of slope becomes dominantly an issue in the geotechnical engineering area. The collapse of the slope occurs because the gravity of external forces is exceeding the shear strength of the soil. The recent research develops the apparatus to determine the angle of repose of the sand-clay soil in the failure conditions. Sandy soil is taken from Beach and Merapi volcano. The clay added into the sand in the proportion of 0%, 5%, 10%, 15%, 20%, 25%, and 30%. The experiment is conducted by taking the height of the falling material of 15cm, 25cm, and 35 cm. Adding 0% to 15% clay brings the sand into SP Category, then adding 20%-30% makes the sand in the SC category. The Modulus if a fine grain of sand beach is smaller than Merapi sand. As the percentage of clay added to the sand higher, the difference of angle of repose of Merapi sand before and after failure is getting smaller, but it is not the case in Beach sand. The percentage of loss of volume of Merapi sand after failure is also going down as the portion of clay higher. The loss of volume of Beach sand added by clay is getting higher in failure condition..

DRAINASE VERTIKAL DENGAN KOLOM CAMPURAN PASIR-PECAHAN BETON UNTUK MEMPERCEPAT KONSOLIDASI TANAH LEMPUNG Anto Budi Listyawan; Qunik Wiqoyah; Sugiyatno; M. Alaydrus Guntur Pamungkas4
JURNAL REKAYASA Vol 10 No 2 (2020): Jurnal REKAYASA
Publisher : Fakultas Teknik Sipil dan Perencanaan. Universitas Bung Hatta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37037/jrftsp.v10i2.61

Tanah di Desa Troketon, Kecamatan Pedan, Kabupaten Klaten mempunyai nilai PI sebesar 34,59%; LL 62,55%; PL 27,96%; dan SL 19.62% ditinjau dengan metode USCS (United Soil Clasification System) termasuk ke dalam kelompok golongan CH yaitu lempung anorganik berplastisitas tinggi. Tanah lempung yang buruk dapat mengakibatkan rusaknya bangunan di atasnya seperti jalan yang bergelombang. Tanah lempung yang buruk dapat diperbaiki menggunakan drainase vertikal yang bertujuan untuk mempercepat penurunan sehingga waktu yang dihabiskan untuk pembangunan relatif singkat dan tidak memakan biaya yang berlebih. Pada penelitian drainase vertikal ini digunakan kolom campuran pasir dan pecahan beton dengan variasi susunan kolom pola bujur sangkar dan segitiga. Sampel diambil pada titik tengah antar 4 kolom , 3 kolom dan 2 kolom, kemudian dilakukan pengujian konsolidasi. Pada variasi bujur sangkar titik tengah antar 4 kolom didapatkan nilai CV sebesar 0,000187 cm2/s, CC sebesar 0.429 dan SC sebesar 0.173 sedangkan, titik tengah antar 2 kolom mempunyai CV sebesar 0,000163 cm2/s, CC sebesar 0.490 dan SC sebesar 0.176. Pada variasi segitiga titik tengah antar 3 kolom didapatkan nilai CV sebesar 0.000129 cm2/s, CC sebesar 0.541 dan SC sebesar 0.254 sedangkan, titik tengah antar 2 kolom mempunya nilai CV sebesar 0.000114 cm2/s, CC sebesar 0.561 dan SC sebesar 0.258. Sehingga kolom campuran pasir dan pecahan beton dengan variasi bujur sangkar lebih baik untuk digunakan sebagai drainase vertikal.

TRAINING RENOVASI DAN PERAWATAN POMPA HIDRAM DI DESA KARANG PELEM, KECAMATAN KEDAWUNG, SRAGEN Aliem Sudjatmiko; Qunik Wiqoyah; Mohammad Ujianto
WARTA LPM WARTA Volume 10, Nomor 1, Maret 2007
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/warta.v10i1.3202

Technological Pump the Hidram technology pump to use the basework style of grafitasi earth and designed in such a way till work the pumpwork automatically without there external energi for example energi oil.Constraint which often bother the [job/activity] pump the hidram is notoptimal is component function pump the effect stuffing up of dirt andcomponent damage pump. The pump Hidram equiped some kinds ofspillway, for example functioning water spillway to arrange awaking ofcurrent and awaking of pressure irrigate the , air-trap to arrange awakingof air composition in water. Especial benefit air good for condition of[isnature of water from nature of water which incompresible become semiincompresible so that punching influence irrigate the/hummer water notdestroy the material pump specially save the tekan.Tabung depress tofunction to catch and maintain the yielded water pressure. Component pumpthe hidram consisted of the Reservoir concentration, fast pipe, spillway oflimbah,balance weight, air spillway, spillway depress and save to depressand also other supporter that is pipe between. In course of evaluation[done/conducted] repair problem of water spillway using rubber of vehiclerut/rubber konveyor, and if/when reckoned from a economic side pumpthis very efficient because energi used to create the pressure irrigate tocome from laboring earth gravitation style air.Benefit from spillway irrigateand also air spillway can be arranged in such a way till work the pump canwork automatically and will labour on during balance constraint workthe pump not annoyed. From repair result got a technical age spillwaymount and stay more 6 month;moon and loss / water leakage causing tolessen the pressure can be avoided. To the condition of in such a way tillwork the pump automatically [done/conducted] a trial and error

PENGARUH KOLOM PASIR TERHADAP KONSOLIDASI TANAH LEMPUNG LUNAK Anto Budi Listyawan; Qunik Wiqoyah; Rena Ningsih; Marten Widhi Satriyana Ramadlan Widhi Satriyana
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

The road weaving near Sragen city Central Java has been daily problem in last decade. The existing of high expansive clay soil in subgrade below the road foundation has been identified as the major cause of this problem. Sand Column become one solution to improve the subgrade since it can ab-sorb the water from the void of clay soil and drain into the channel. The re-search develops a model of Sand column in laboratorium. The box of 1.0 m x 0.4 m x 0.4 m has been created. 15 cm diameter of sand column then installed at the toe and samples for consolidation test are taken from various distances from the centre of column (i.e. 16.67 cm; 33.33 cm; and 50 cm). The result shows that the Sand Column can improve the soft clay soil in terms of consolidation. The coefficient of consolidation increases as the compression index drops. Consequently, the consolidation settlement can be re-duced significantly.

Perencanaan Fondasi Tiang Pancang Pada Gedung Perkuliahan Universitas Slamet Riyadi (Variasi Diameter Tiang Pancang) Qunik Wiqoyah; Iwan Setyo Nugroho
Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil Vol. 15/No.1/Juli 2022
Publisher : Departement of Civil Engineering, Faculty of Engineering

Uji sondir dilakukan pada 3 titik di lokasi pembangunan Gedung perkuliahan Universitas Slamet Riyadi. Didapatkan bahwa tanah keras terletak pada kedalaman 4,4 m dari permukan tanah. Berdasarkan hasil uji sondir tersebut maka jenis fondasi yang digunakan dalam perencanaan ini adalah pondasi tiang pancang beton dengan 3 jenis variasi diameter yaitu dengan diameter 0,3; 0,4; 0,5 m dengan kedalaman tiang 4 m. Tujuan dari perencanaan ini adalah menentukan beban struktur yang diterima oleh fondasi, mendesain jumlah tiang pancang yang dibutuhkan, mendesain penulangan pada Pile Cap serta penulangan tiang pancang. Perencanaan diawali dengan menentukan beban struktur yang diterima oleh fondasi, mendesain jumlah tiang pancang yang dibutuhkan, mendesain penulangan pada Pile Cap serta penulangan tiang pancang. Hasil perhitungan kapasiktas dukung tiang pancang mengunakan metode Meyerhof pada tanah pasir dan metode deRuiter dan Beringen pada tanah lempung didapatkan hasil sebagai berikut : untuk tiang diameter 0,3 m sebesar 534,856 kN, diameter 0,4 m sebesar 780,257 kN, diameter 0,5 m sebesar 827,689 kN. Perhitungan beban struktur atas didapatkan nilai beban aksial kolom terbesar 2293,510 kN. Jumlah tiang pancang yang dibutuhkan diameter 0,3 m jumlahnya 6 tiang, diameter 0,4 dan 0,5 m sebanyak 4 tiang.

Penurunan Konsolidasi Tanah Lempung Kecamatan Sambi Kabupaten Boyolali yang Distabilisasi dengan Limbah Keramik Qunik Wiqoyah; Sinta Thisya Wulandari; Danang Tri Wijaya
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 11 No 1 (2023): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Januari 2023)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v11i1.4542

Based on the preliminary test results, the original soil of the Sambi Boyolali area is classified as inorganic clay with high plasticity. It has a plasticity index value of 31.93%, therefore stabilization is required so that the soil is able to withstand the load of the structure above it. Stabilization was carried out by mixing the soil with ceramic waste that passed the No. 4 sieve with variations of ceramic waste 2.5%, 5%, 7.5%, and 10% of the weight of the soil sample, which aims to determine changes in physical properties and mechanical properties (consolidation settlement) before and after the soil is stabilized. The results of the physical properties test of the soil after being stabilized with ceramic waste showed a decrease in the value of water content, specific gravity, liquid limit value, and plasticity index as well as an increase in the plastic limit value, shrinkage limit value and the amount of soil that passed sieve No. 200. Soil classification changed from inorganic clay with high plasticity in the original soil, to inorganic clay with low plasticity when mixed with 10% ceramic waste. The results of the mechanical test showed an increase in the value of the maximum dry volume weight of the soil (γdmax) as well as the value of the consolidation coefficient (Cv), and a decrease in the compression index value (Cc) and the consolidation settlement value (Sc).

Konsolidasi Tanah Lempung Ekspansif di Ngawi Jawa Timur Yang Distabilisasi Dengan Serbuk Gypsum Renaningsih, Renaningsih; Adhistia, Danny; Wiqoyah, Qunik; Susanto, Agus
Bulletin of Civil Engineering Vol 3, No 1 (2023): Februari
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v3i1.17490

Tanah di desa Soko, Ngawi, Jawa Timur termasuk dalam kategori tanah lempung dengan plastisitas tinggi dan memiliki potensi kembang susut yang tinggi, berdasarkan penelitian sebelumnya dengan hasil uji mineral tanah ekspansif yaitu mineral montmorillonite. Penelitian ini berupaya memperbaiki sifat fisis dan sifat mekanis tanah dengan stabilisasi menggunakan serbuk gypsum dengan persentase campuran gypsum 0%, 2,5%, 5%, 7,5%, dan 10% dari berat sampel, supaya dapat bermanfaat untuk merencanakan struktur konstruksi terbaik diatasnya. Pengujian penelitian meliputi uji sifat fisis dan uji sifat mekanis pada tanah asli dan tanah campuran. Hasil uji fisis pada tanah asli dan tanah campuran menunjukkan bahwa semakin bertambahnya kandungan gypsum nilai specific gravity, nilai batas plastis, dan nilai batas susut mengalami kenaikkan sedangkan nilai kadar air, batas cair, indeks plastisitas, dan lolos saringan No.200 mengalami penurunan. Klasifikasi menurut AASTHO menunjukkan bahwa tanah asli dan tanah campuran 2,5% termasuk dalam kelompok A-7-6, sedangkan campuran 5%, 7,5%, dan 10% termasuk kelompok A-7-5. Klasifikasi menurut USCS tanah persentase campuran 0%, 2,5%, 5%, 7,5% termasuk dalam kelompok CH, sedangkan persentase 10% termasuk MH. Hasil uji sifat mekanis pemadatan dengan Standard Proctor didapatkan semakin bertambahnya kandungan gypsum nilai berat volume kering maksimal semakin naik sedangkan nilai kadar air optimum semakin turun. Hasil uji konsolidasi didapatkan seiring bertambahnya kandungan gypsum nilai Coefficient of Consolidation semakin naik dan nilai Compression Index dan Settlement of Consolidation semakin turun. Nilai Cv tertinggi 0,0531 cm2/detik, nilai Cc terendah 0,1578, dan nilai Sc terendah 0,0027 cm yang terdapat pada persentase campuran 10%.

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