Stabilisasi Tanah Lempung dengan Campuran Pasir Pantai terhadap Nilai CBR

Simanjuntak, Muhammad Rokky A.; Lubis, Kamaluddin; Rangkuti, Nuril Mahda

doi:10.31289/jcebt.v1i2.1680

Cited by 7 publications

(4 citation statements)

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“…The CBR value is the ratio between the pressure required to penetrate the soil with a round section piston of 3 inches 2 (19.35 cm 2 ) with a penetration speed of 0.05 inches/minute to the pressure required to penetrate a specific standard material. The greater the CBR value, the greater the bearing capacity of the soil and vice versa [20]. The results obtained at 5 test points show that the CBR value is relatively flat, with an average value of 1.4 on day 7 and 1.33 on day 14.…”

Section: Calcite Distribution Uniformity and Results Of California Be...mentioning

confidence: 91%

Scale-Up Soybean Crude Urease Calcite Precipitation (SCU-CP) Method for Sandy Soil Improvement

Oktafiani,

Putra,

Erizal

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Loose sandy soils tend to have low shear strength; thus, improving the mechanical properties is necessary to enhance the bond of soil grains. Adding an additive that will form a bonding agent, i.e., calcite, within the soil to increase the strength of the soil is a relatively novel technique. Soybean Crude Urease Calcite Precipitation (SCU-CP) is a soil improvement method that utilizes soybeans as a catalyst for calcite formation in the reaction of urea and CaCl2. This study aims to evaluate the efficacy of SCU-CP in the large-scale application in terms of the distribution of calcite and its impact on the behavior of the California Bearing Ratio. A soil sample made with a 1-m acrylic mold with a 5cm diameter and a drum test with a height and diameters of 50 cm and 60 cm, respectively. The results in a percentage distribution of material vertically on a 1-m acrylic mold and horizontally on a 60 cm diameter drum with an even distribution. The average percent spread is 3.96% in the mold and 7.19% in the drum-test even distribution of strength, where the average CBR result is 1.40 on the seventh day. This study concluded that the SCU-CP method with the pouring technique has a promising approach for real-field application.

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Section: Calcite Distribution Uniformity and Results Of California Be...mentioning

confidence: 91%

Scale-Up Soybean Crude Urease Calcite Precipitation (SCU-CP) Method for Sandy Soil Improvement

Oktafiani,

Putra,

Erizal

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The soil testing results will help determine the bearing capacity of the soil where a structure will be built. The bearing capacity of the soil is associated with the CBR value obtained from AASHTO [8], as shown in Table 1.…”

Section: Theoretical Of Soft Soilsmentioning

confidence: 99%

Effects of Physical and Mechanical Properties of Soft Soil on Subgrades Performances in Lubuk Bayas Village, Serdang Bedagai Regency

Juliana,

Bawadi

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Generally, the existence of soft soil in Indonesia will be a problem in the construction of highway construction. One factor that influences and needs to be known in road construction is the characteristics of the subgrade where the pavement construction will be placed on it. Poor soil characteristics can cause bumpy road surfaces, cracks, or other road damage. Therefore, before carrying out a soil improvement, it is necessary to know its characteristics through the physical and mechanical properties of the subgrade. This research was conducted in Lubuk Bayas Village, Serdang Bedagai Regency, North Sumatra Province. Tests of physical properties in this study include sieve analysis, water content, specific gravity, plasticity limit test, and liquid limit test. The soil shear strength test and California Bearing Ratio (CBR) test were carried out to test the mechanical properties using a Dynamic Cone Penetrometer (DCP). From the results of testing the physical properties of the soil, it was found that Samples 1, 2, and 3 were fine-grained soils with the percentage of soil passing the No.200 sieve greater than 50%. The USCS classification system shows that samples 1 and 2 of the soil are in the Lean Clay (CL) group, while sample 3 is in the Fat Clay (CH) group. Samples 1, 2, and 3 include soils with high plasticity because the PI value is >17. The results of testing the mechanical properties of the soil Sample 1 obtained the value of c = 0.1299 kg/cm2 and Ø = 13.2°, in Sample 2 obtained the value of c = 0.1075 kg/cm2 and the value of Ø = 11.2° and in Sample 3 obtained the value of c = 0.1275 kg/cm2 and the value of Ø = 11.9°. DCP testing on samples 1, 2 and 3 obtained CBR values of 5.35%, 4.73% and 3.15%. From the CBR results, it can be seen that the soil in this location has a low soil bearing capacity, so if it is to be used as a subgrade layer, it will be necessary to repair the soil first so that structural damage does not occur in the future. Soil improvement can be made by stabilizing the soil using natural materials to maintain environmental sustainability. Natural materials that can be used include sand with certain gradations, stone ash, palm shell ash, and various other natural materials.

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“…Beberapa masalah yang akan muncul, baik pada saat pembangunan maupun setelah pekerjaan konstruksi, diantaranya dinding mengalami keretakan, terangkatnya pondasi, jalan menjadi bergelombang dan banguanan akan runtuh (Wibowo & Endaryanta, 2017). Hal ini dapat disebabkan karena tanah lempung mempunyai daya dukung, kuat tekan dan kuat geser yang rendah (Simanjuntak et al, 2018). Untuk mengatasi hal tersebut maka perlu dilakukannya uji kuat geser langsung (Rini & Ardan, 2018).…”

Section: Abstrakunclassified

Stabilitas Tanah Lempung Berpasir Melalui Uji Kuat Geser Langsung Dengan Menggunakan Mesin Direct Shear Test

Mahendra¹,

Candra²,

Aisyah³

et al. 2022

j.of Sustainable civ. Engineering (JOSCE)

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Dalam merancang dan membangun suatu bangunan diperlukan pengetahuan rinci tentang tanah yang akan dibangun. Jenis tanah yang perlu diperhatikan dalam konstruksi ialah tanah lempung sehingga penelitian ini menggunakan sampel tanah lempung berpasiran. Hal ini karena tanah lempung berpasir mempunyai sifat plastisitas yang tinggi dan perubahan susut tanah relatif besar. Untuk mengatasi hal tersebut perlu dilakukan uji kuat geser tanah. Penelitian ini menggunakan metode eksperimental uji kuat geser langsung dengan mesin direct test shear yang bertujuan untuk mengetahui stabilitas dan kekuatan tanah sebagai perencanaan sebuah konstruksi pada area tanah tersebut. Adapun metodologi yang dilakukan adalah pengambilan sampel tanah, pengujian di laboratorium dan pengambilan data. Hasil dari penelitian ini diperoleh nilai tegangan normal dan tegangan geser. Nilai tegangan normal yaitu sampel 1 dengan beban 0,8 kg adalah 2,540 kPa, sampel 2 dengan beban 1,593 kg adalah 5,012 kPa dan sampel 3 dengan beban 3,163 kg adalah 10,110 kPa, sedangkan nilai tegangan geser yaitu sampel 1 dengan beban 0,8 kg adalah 0,42 kPa, sampel 2 dengan beban 1,593 kg adalah 0,60 kPa dan pada sampel 3 dengan beban 3,163 kg adalah 1,28 kPa. diperoleh nilai kohesi sebesar 0,082 kPa dan nilai sudut geser diperoleh sebesar 6,637°. Data pengujian tanah ini dapat dijadikan sebagai acuan untuk menentukan tipe dari suatu tanah.

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Stabilisasi Tanah Lempung dengan Campuran Pasir Pantai terhadap Nilai CBR

Cited by 7 publications

References 0 publications

Scale-Up Soybean Crude Urease Calcite Precipitation (SCU-CP) Method for Sandy Soil Improvement

Scale-Up Soybean Crude Urease Calcite Precipitation (SCU-CP) Method for Sandy Soil Improvement

Effects of Physical and Mechanical Properties of Soft Soil on Subgrades Performances in Lubuk Bayas Village, Serdang Bedagai Regency

Stabilitas Tanah Lempung Berpasir Melalui Uji Kuat Geser Langsung Dengan Menggunakan Mesin Direct Shear Test

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