Pengaruh Penggunaan Kapur (CaO) Sebagai Bahan Stabilisasi Tanah Lempung Pada Proyek Pembangunan Sarana Limbah Di Pantai Utara Lamongan

Pribadi, Rizal Wahyu (2021) Pengaruh Penggunaan Kapur (CaO) Sebagai Bahan Stabilisasi Tanah Lempung Pada Proyek Pembangunan Sarana Limbah Di Pantai Utara Lamongan. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tanah dapat dibagi menjadi dua yaitu tanah non-kohesif (cohesionless soils) atau tanah kohesif (cohesive soils). Tanah ekspansif merupakan jenis tanah yang mengalami perubahan volume akibat adanya perubahan kadar air dalam pori-pori tanah. Apabila kadar air dalam pori tanah meningkat maka volume tanah akan mengembang, sedangkan apabila kadar air tanah berkurang maka tanah akan menyusut(Chomaedhi et al., 2007). Perilaku dan sifat-sifat lempung sangat bergantung pada komposisi mineral-mineralnya, unsur-unsur kimianya, tekstur lempung, dan partikel-partikelnya serta pengaruh lingkungan di sekitarnya. (Alaa & Kurniawidi, 2015).Stabilisasi tanah dapat dilakukan pada kondisi tanah yang buruk. Stabilisasi tanah dapat memperbaiki sifat fisik dan mekanik tanah. Kondisi tanah pada Proyek Pembangunan Sarana Limbah di Pantai Utara Lamongan ini memiliki sifat tanah lempung yang buruk, sehingga perlu distabilisasi. Penelitian ini bertujuan untuk mempelajari dan mengetahui sejauh mana pengaruh campuran bahan kapur pada proses terhadap sifat-sifat fisik, kuat geser tanah lempung campuran yang distabilisasi. Percobaan dilakukan dengan mencampurkan tanah alami dan tanah kering udara dengan kadar kapur bervariasi mulai dari 0%, 3%, 5%, 7%, 10%, dari berat tanah kering. Uji fisik tanah meliputi analisa saringan, gravimetri,volumetri, dan atteberg limit. Sedangkan uji mekanik tanah setelah dicampur berupa proctor standart, CBR (California Bearing Ratio), UCT (Unconfined Compression Test) dan uji XRF (X-ray Fluorescence Spectrometer) dan Uji SEM (ScanningElectron Microscope). Hasil penelitian yang didapat menunjukan bahwa tanah asli memiliki jenis tanah lempung dengan plastisitas rendah. Dengan nilai berat isi kering 1,52 gr/cm3 dan kadar air optimum 22,91%. Pada tanah yang distabilisasi mengalami peningkatan nilai pada variasi kapur 3% dengan nilai berat isi kering 1,53 gr/cm3 dan kadar air optimum 23,38%. Pada pengujian CBR didapatkan peningkatan nilai terbesar yaitu pada variasi kapur 3% dengan nilai 1,33% dibandingkan dengan nilai tanah asli yaitu 0,98%. Pada pengujian UCT didapatkan peningkatan nilai terbesar yaitu pada variasi kapur 3% dengan nilai 53,02 kN/m2 dibandingkan dengan nilai tanah asli yaitu 28,44 kN/m2. ====================================================================================================== Soil can be divided into two, namely non-cohesive soils (cohesionless soils) or cohesive soils (cohesive soils). Expansive soil is a type of soil that changes in volume due to changes in water content in the soil pores. If the water content in the soil pores increases, the soil volume will expand, whereas if the soil moisture content decreases, the soil will shrink (Chomaedhi et al., 2007). The behavior and properties of clay are highly dependent on the composition of its minerals, chemical elements, clay texture, and particles and the influence of the surrounding environment. (Alaa & Kurniawidi, 2015).Soil stabilization can be done in poor soil conditions. Soil stabilization can improve the physical and mechanical properties of the soil. The soil condition in the Waste Facility Development Project on the North Coast of Lamongan has poor clay properties, so it needs to be stabilized. This study aims to study and determine the extent of the influence of the lime mixture on the process on the physical properties, shear strength of the stabilized mixed clay. The experiment was carried out by mixing natural soil and air-dried soil with lime content varying from 0%, 3%, 5%, 7%, 10%, of the dry weight of the soil.Soil physical tests include sieve analysis, gravimetric, volumetric, and Atteberg limit. While the mechanical tests of the soil after being mixed were in the form of standard proctor, CBR (California Bearing Ratio), UCT (Unconfined Compression vi Test) and XRF (X-ray Fluorescence Spectrometer) and SEM (ScanningElectron Microscope). The results obtained indicate that the original soil has a type of clay with low plasticity. With a dry weight value of 1.52 g/cm3 and an optimum moisture content of 22.91%. In the stabilized soil, the value increased in the lime variation of 3% with a dry density value of 1.53 g/cm3 and an optimum water content of 23.38%. In the CBR test, the largest increase in value was found in the 3% lime variation with a value of 1.33% compared to the original soil value, which was 0.98%. In the UCT test, the largest increase in value was found in the 3% lime variation with a value of 53,02 kN/m2 compared to the original soil value, which was 28,44 kN/m2.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Tanah ekspansif, Stabilisasi Kapur, Kekuatan Geser
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction)
T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization
Divisions: Faculty of Vocational > Civil Infrastructure Engineering (D4)
Depositing User: Rizal Wahyu Pribadi
Date Deposited: 03 Sep 2021 03:17
Last Modified: 03 Sep 2021 03:17
URI: https://repository.its.ac.id/id/eprint/90795

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