Crushed Limestone

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Studi Pengaruh Ukuran Butir terhadap Parameter Kompaksi Material Crushed Limestone.

Studi Pengaruh Ukuran Butir terhadap Parameter Kompaksi Material Crushed Limestone.

Tujuan penelitian adalah untuk menganalisis pengaruh ukuran butir terhadap parameter kompaksi material crushed limestone. Material crushed limestone yang digunakan berasal dari Padalarang, Jawa Barat. Ukuran butir equivalent dari crushed limestone yang digunakan sebagai material uji adalah : 2mm (SU1), 3mm (SU2), dan 4mm (SU3). Uji kompaksi di laboratorium menggunakan tata cara standard proctor test dengan standar ASTM D 698. Untuk uji sieve analysis standar yang digunakan antara lain adalah : BS 1337, ASTM C136 dan ASTM D 2487.
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Pengaruh Penambahan Persentase Debu Batu terhadap Koefisien Permeabilitas Material Crushed Limestone.

Pengaruh Penambahan Persentase Debu Batu terhadap Koefisien Permeabilitas Material Crushed Limestone.

The research objective is to analyze the influence of stone dust addition towards permeability parameter on crushed limestone material. The material that used for a test sample are both well and poorly graded crushed limestone that comes from Sukabumi, West Java. Laboratory test procedures are according to standard provision of ASTM D 2434-68 with constant head methods. Assumed void ratio value are 0,7 on entire test with 8cm assumed sample height (L r ). Head

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Pengaruh Siklus Kompaksi terhadap Parameter Kompaksi Material Crushed Limestone.

Pengaruh Siklus Kompaksi terhadap Parameter Kompaksi Material Crushed Limestone.

1) Demi pengembangan ilmu pengetahuan saya menyetujui untuk memberikan kepada Universitas Kristen Maranatha Hak Bebas Royalti nonekslusif (Non-Exclusive Royalty Free Right) atas laporan penelitian saya yang berjudul “ Pengaruh Siklus Kompaksi Terhadap Parameter Kompaksi Material Crushed Limestone ” .

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Pengaruh Penambahan Butiran Halus Terhadap Pemadatan pada Material Crushed Limestone.

Pengaruh Penambahan Butiran Halus Terhadap Pemadatan pada Material Crushed Limestone.

From the test results obtained value Gs average 20% crushed limestone with fine grains was 2.63. And the average value Gs for crushed limestone 3mm without the mixture obtained from the experiments have been conducted by previous researchers (Laowo, S.A., 2016) amounted to 2.77. Testing has been done for Crushed Limestone with 20% fine grain values obtained optimum moisture content, wopt 8% and a maximum dry weight of γdmax of 1,825gr / cm 3 . Test without compacting the crushed

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Pengaruh Curing Time terhadap Paramenter Kompaksi Material Crushed Limestone.

Pengaruh Curing Time terhadap Paramenter Kompaksi Material Crushed Limestone.

crushed limestone. Material ini sering digunakan sebagai timbunan perkerasan jalan, lapangan terbang, dan lain-lain. Untuk memenuhi spesifikasi kepadatan pada pekerjaan timbunan di lapangan maka harus dilakukan uji kompaksi di laboratorium terlebih dahulu terhadap material timbunan crushed limestone untuk memperoleh paramater kompaksi yang akan dijadikan sebagai acuan pada spesifikasi pekerjaan timbunan tersebut.

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Pengaruh Ukuran Butir Terhadap Koefisien Permeabilitas Material Crushed Limestone.

Pengaruh Ukuran Butir Terhadap Koefisien Permeabilitas Material Crushed Limestone.

Tujuan penelitian dalam Tugas Akhir ini adalah mengevaluasi pengaruh ukuran butir terhadap koefisien permeabilitas material crushed limestone dengan metode constant headberdasarkan standar ASTM D 2434-68.Sampel uji penelitian menggunakan material berukuran butir ekivalen sebagai berikut: SU2 (Lolos saringan 3mm tertahan saringan 2mm) dan SU1 (Lolos saringan 2mm tertahan saringan 1mm). Nilai angka pori yang direncanakan pada pengujian permeabilitas ialah 0,7, 0,8, dan 0,9. Dengan asumsi tinggi sampel uji (L r ) 8cm.

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Pengaruh Gradasi terhadap Nilai CBR Material Crushed Limestone.

Pengaruh Gradasi terhadap Nilai CBR Material Crushed Limestone.

crushed limestone dari poorly graded ke well graded dengan energi kompaksi 56 blows per layer hanya mengalami kenaikan nilai CBR sebesar 4,9%. Klasifikasi lapisan konstruksi jalan berdasarkan kurva stress-penetration (Porter. O.J., 1942) untuk material crushed limestone baik pada gradasi material poorly graded dan well graded, termasuk kedalam klasifikasi good subgrade.

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Pengaruh Gradasi Terhadap Parameter Kompaksi Material Crushed Limestone.

Pengaruh Gradasi Terhadap Parameter Kompaksi Material Crushed Limestone.

Gambar 4.8 Kurva Uji Kompaksi II Well Graded dan Poorly Graded (2mm) . 38 Gambar 4.9 Kurva Uji Kompaksi II Well Graded dan Poorly Graded (3mm) . 39 Gambar 4.10 Kurva Uji Kompaksi II Well Graded dan Poorly Graded (4mm) . 40 Gambar 4.11 Gambar 4.11 Kurva Gabungan Kompaksi Crushed Limestone Uji I Well Graded dan Poorly Graded (2mm, 3mm, 4mm)...........41

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Pengaruh Energi Kompaksi Pada Uji Standard Proctor Material Crushed Limestone.

Pengaruh Energi Kompaksi Pada Uji Standard Proctor Material Crushed Limestone.

obtained different behaviors, wopt to 25 collisions/layer and 35 collisions/layer obtained on the condition of the water content of natural (no added water), whereas wopt to 56 collisions/layer and 75 collisions/layer obtained in addition 105,9cc of water. For samples Crushed Limestone, recommended for energizing amounted 1360,8kN.m/m3 (56 collision/layer) or more due to the trend curve in the curve of new compacting the ideal gain curve at 56 the number of collisions/layer and 75 collision/layer.

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Pengaruh Ukuran Butir terhadap Nilai CBR Material Crushed Limestone.

Pengaruh Ukuran Butir terhadap Nilai CBR Material Crushed Limestone.

The purpose of this research is to analyze the influence of grain size on the value of CBR (California Bearing Ratio) crushed limestone material. The material used for the test sample is crushed limestone from areas Padalarang, West Java with a grain size equivalent to 2mm (test sample 1), 3mm (test sample 2) and 4mm (test sample 3). CBR test laboratory that performed in this study refers to the standard ASTM D1883. Design CBR value obtained using one method of water content only. Tests conducted at the Laboratory of Soil Mechanics, Civil Engineering Maranatha Christian University, Bandung.
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Pengaruh Gradasi terhadap Water Absorption Material Crushed Limestone.

Pengaruh Gradasi terhadap Water Absorption Material Crushed Limestone.

1) Demi pengembangan ilmu pengetahuan saya menyetujui untuk memberikan kepada Universitas Kristen Maranatha Hak Bebas Royalti nonekslusif (Non-Exclusive Royalty Free Right) atas laporan penelitian saya yang berjudul “ Pengaruh Gradasi Terhadap Water Absorption Material Crushed Limestone ” .

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Pengaruh Kadar Air terhadap Degradasi Ukuran Butir Material Crushed Limestone Pasca Kompaksi.

Pengaruh Kadar Air terhadap Degradasi Ukuran Butir Material Crushed Limestone Pasca Kompaksi.

The purpose of this study was to analyze the effect of water content of the degradation of the grain size of the material after compacting crushed limestone. Limestone is derived from karst Citatah Padalarang, West Bandung Regency, West Java. The grain size crushed limestone material used is a material passing sieve 2mm and retained sieve 0.85mm (P2mm R0.85mm) and passing 4.75mm and retained 0.85mm (P4.75mm R0.85mm). Test sieve analysis refers to ASTM C 136- 01, ASTM D 2487-06, and BS 1337. Test compaction refers to the standard (ASTM D-698).
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Material Crushed Limestone Saat Pra Kompaksi Dan Pasca Kompaksi.

Material Crushed Limestone Saat Pra Kompaksi Dan Pasca Kompaksi.

Sebagai material yang akan dipakai untuk timbunan pada pekerjaan konstruksi jalan harus melalui analisis ukuran butir (sieve analysis), salah satunya dengan material limestone. Analisis ayakan adalah mengayak dengan menggetarkan contoh tanah melalui satu set ayakan dimana lubang-lubang ayakan tersebut makin kecil secara berurutan. Hasil dari analisis ayakan bertujuan untuk mendapatkan gradasi dan dapat membandingkan beberapa jenis tanah yang berbeda-beda.

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Pengaruh Pengurangan Diameter Mold Standard Proctor terhadap Parameter Kompaksi Crushed Limestone.

Pengaruh Pengurangan Diameter Mold Standard Proctor terhadap Parameter Kompaksi Crushed Limestone.

Tujuan penelitian adalah melakukan analisis pengaruh pengurangan diameter mold standard proctor terhadap parameter kompaksi material crushed limestone. Material yang digunakan untuk sampel uji (SU) adalah crushed limestone yang berasal dari daerah Padalarang, Jawa Barat. Ukuran butir yang digunakan yaitu: SU1 (lolos saringan 2mm tertahan saringan 1mm), SU2 (lolos saringan 3mm tertahan saringan 2mm). Diameter mold yang digunakan adalah 8cm (mold non-standard). Energi kompaksi dan jumlah lapisan mengacu pada ketentuan standard proctor, (ASTM D698) yaitu 600kN-m/m 3 dengan jumlah lapisan 3 lapis.
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Evaluasi Gradasi Material Crushed Limestone Well Graded Saat Pra Kompaksi dan Pasca Kompaksi.

Evaluasi Gradasi Material Crushed Limestone Well Graded Saat Pra Kompaksi dan Pasca Kompaksi.

The results of the study material is well graded crushed limestone 1 post-compaction test with a water content (w) w1 = 0.23% below the optimum moisture content w2 (wopt) = 1.67%, the value of the coefficient of uniformity (Cu) and the coefficient of gradation ( cc) down, among others: Cu = 17.65 cc = 1.59, and Cu = 16.59 cc = 1.44 with grading classification remains well graded, there is no change in gradation of pre-compaction. While w3 = 3.34%, w4 and w5 = 4.91% = 6.23% above w2, Cu and Cc values are unknown so the classification gradation material with moisture content above w2 addition of post-compaction is not classifiable (unclassified). PercentValue pre-compacting fines against post- compaction increased to a maximum of 19.132% and a minimum of 8.256%. For material well graded crushed limestone second test, the water content w1 = 0.08% below the optimum moisture content w2 (wopt) = 1.73%, Cu and Cc values rise, among others: Cu = 11.74 and Cu = 12, 97 while the value of Cc down among others: and Cc Cc = 1.45 = 1.28 with grading classification remains well graded, there is no change in gradation of pre-compaction. While w3 = 3.27%, w4 and w5 = 5.22% = 6.25% above w2, Cu and Cc values can not be known so that the classification gradation material with moisture content above w2 addition of post-compaction is unclassified. Percent Value fines pre-compaction of the post-compacting increased to a maximum of 13.198% and a minimum of 6,016%.
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The Modeling of Massive Limestone Using Indicator Krigng Method: Case Studies of Massive Limestone in PT Sinar Asia Fortuna - Universitas Negeri Padang Repository

The Modeling of Massive Limestone Using Indicator Krigng Method: Case Studies of Massive Limestone in PT Sinar Asia Fortuna - Universitas Negeri Padang Repository

ABSTRACT: In the context of mining, the estimation is an attempt to estimate the value of block or point that expected to approach the true value. An accurate geological modeling will greatly assist in mining minerals that expected production in accordance with the company’s production targets. Therefore, the research was conducted at PT Sinar Asia Fortuna to determine the geological model and resources. The geological modeling and resource’s estimation of massive limestone was done using Indicator Kriging Method. The geological modeling of massive limestone was carried out by using SGeMS version 2.0 and Datamine Studio 3, while the limestone’s resource was estimated by using Datamine Studio 3. This study categorizes the limestone to be 3 types, i.e. massive limestone, vuggy limestone and chalk. The estimation of percentage by using Indicator Kriging Method obtained the distribution of limestone massive proportion of 75%, 23% vuggy limestone and 2% chalk. The resource calculation respectively obtains 130.889.422 tons of massive limestone, 40.139.422 tons of vuggy limestone, and 3.490.384 tons of chalk. Total tonnage for the indicator kriging = 174 519 228 tons
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PABRIK CALCIUM CHLORIDE DARI LIMESTONE DENGAN PROSES NETRALISASI

PABRIK CALCIUM CHLORIDE DARI LIMESTONE DENGAN PROSES NETRALISASI

Bahan baku limestone dari stock pile F-110 diumpankan denga Belt conveyor J-111 untuk dihancurkan pada hammer crusher C-112 dari ukuran 6 in menjadi ¼ in,kemudian limestone dihaluskan pada ballmill C-113 dari ukuran ¼ in menjadi 200 mesh.Produk ballmill C-113 kemudian disaring pada screen H- 114,dimana produk oversize dikembalikan pada ballmill C-113 dengan backet elevator J-118 dari silo F-119

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ANALISIS METODE ELEMEN HINGGA PADA LENDUTAN STRUKTUR JALAN RAYA TERHADAP PENGGUNAAAN BATU KAPUR ( LIMESTONE)

ANALISIS METODE ELEMEN HINGGA PADA LENDUTAN STRUKTUR JALAN RAYA TERHADAP PENGGUNAAAN BATU KAPUR ( LIMESTONE)

Damage to the highway pavement is a problem in the transportaion system. Those problem can be solved by strengthening the carrying capacity of the foundation to thicken the base course layer and the use of geotextiles on the subgrade. The purpose of this study was to determine the use of local materials such as limestone as a base course in terms of the value of deflection. Limestone as a base course thickness variation studied by 5, 10, 15 and 20 cm on the basis of different subgrade conditions, namely soft soil, soft soil with a geotextile and granular soil. This study uses three different types of calculation methods, the finite element method with SAP 2000, Plaxis v.8.2 , and the formula Hetenyi (1974). Road conditions assumed in road class III with the axis of heaviest load of 8 tons. Coating the surface of a concrete slab with dimensions of 24 m x 6 m x 0.15 m with quality K350 and f'c of 35 MPa. These results indicate that the addition of the thickness of the base layer of limestone as a base course with SAP 2000, Plaxis v.8.2, and the formula Hetenyi (1974) can reduce deflection of 8.15%, 2.04% and 11.06%. Added geotextile in soft soil with three methods can reduce the deflection of 12.52%, 1.35% and 16.92%. omparison of types of granular soil and soft soil with three methods can decrease by 41.97%, 33.47% and 53.09%.
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PABRIK CAUSTIC SODA DARI LIMESTONE DAN SODA ASH DENGAN PROSES CONTINUOUS DORR CAUSTICIZING.

PABRIK CAUSTIC SODA DARI LIMESTONE DAN SODA ASH DENGAN PROSES CONTINUOUS DORR CAUSTICIZING.

Dengan mengucapkan rasa syukur kepada Tuhan Yang Maha Esa dan dengan segala rahmat serta karuniaNya sehingga penyusun telah dapat menyelesaikan Tugas Akhir “Pra Rencana Pabrik Caustic Soda dari Limestone dan Soda Ash dengan Proses Continuous Dorr Causticizing”, dimana Tugas Akhir ini merupakan tugas yang diberikan sebagai salah satu syarat untuk menyelesaikan program pendidikan kesarjanaan di Jurusan Teknik Kimia, Fakultas Teknologi Industri, Universitas Pembangunan Nasional “ Veteran” Jawa Timur.

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Geology of Jragung and Bengkah, Karangawen District, Demak regency, Central Java Province - Diponegoro University | Institutional Repository (UNDIP-IR)

Geology of Jragung and Bengkah, Karangawen District, Demak regency, Central Java Province - Diponegoro University | Institutional Repository (UNDIP-IR)

The geological mapping has been started since the beginning of the educational process. However, simulations conducted in the laboratory only provides an ideal example, when the truth is rarely found in these ideal conditions. Therefore, students are trained to observe actual conditions in the mapping of geology, seeking connection with ideal conditions, and use for reconstruction in general geological conditions in the areas of training organized into Geological Map. Mapping method is done by determining the boundaries of a particular unit. The next point that the limits have been obtained directly from the field will be drawn and reported in the form of maps. Course for a certain unit limit yield a specific map. For example there are limits which litologi can be mapped into geological map. As for getting the map data which includes several methods of survey methods, descriptive methods, and analytical methods. Geomorphology mapping area is divided into three units based on its morphogenesis, namely: structural landform Units, denudasional landform unit, fluviatil landform units. Stratigraphy in this area is divided into 5 units, namely: tufaceous limestone Unit, sandstone Unit ,carbonaceous claystone Unit, limestone unit, and Deposition Aluvial unit. Geological structures are formed in regions of heavy and mapping fault.
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