scholarly journals Pemanfaatan Semen Slag untuk Stabilisasi Tanah dan Pengaruhnya Terhadap Nilai CBR Berdasarkan Variasi Kadar Air Sisi Basah Optimum

2021 ◽  
Vol 18 (2) ◽  
pp. 132-140
Author(s):  
Enden Mina ◽  
Woelandari Fathonah ◽  
Rama Indera Kusuma ◽  
Naufal Abdurrasyid
Keyword(s):  
Bearing Capacity ◽  
Road Construction ◽  
Soil Improvement ◽  
California Bearing Ratio ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Ratio Test ◽  
High Plasticity ◽  
Slag Cement ◽  
Test Soil

Many of the damage in road construction occurred because the soil did not have a good bearing capacity, therefore soil improvement was needed to increase the strength of the soil. One of the damaged roads that occur due to the lack of soil bearing capacity is at Priyayi Mosque Village Road, Kasemen District, Serang City which has a low carrying capacity with a CBR value of 1.99%. In this study, several tests were carried out, soil physical and California Bearing Ratio test. Soil physical tests carried out were water content, soil density, grain size analysis, Atterberg limits, compaction test and, CBR with the addition of slag cement with variations of 0%, 5%, 10%, 15% based on Variation of optimum wet side moisture content. The result of soil physical properties testing obtained the type of soil is an organic clay with high plasticity. The results of the California Bearing Ratio test on the original soil had a CBR value of 2.4% and there was an increase to the optimum at the addition of 15% Slag Cement in 0 and 3 days of curing with a CBR value of 11.2% and 15.25%. Based on these results, it can be concluded that the cement slag content of 15% with 3 days of curing time can increase the bearing capacity of the soil and fulfill the requirements as a good road subgrade

scholarly journals Engineering Characterization of Subgrade Soils of Jimma Town, Ethiopia, for Roadway Design

Geosciences ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 94
Author(s):  
Alemineh Sorsa ◽  
Sanjaya Senadheera ◽  
Yoseph Birru
Keyword(s):  
Engineering Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
High Plasticity ◽  
Soil Characterization ◽  
Engineering Structures ◽  
Undisturbed Soil ◽  
Subgrade Soil ◽  
Geotechnical Investigations ◽  
Jimma Town

Soils are naturally occurring materials that carry loads of civil engineering structures including roads and buildings. However, not all natural soils are suitable for such uses due to limited strength and instability under varying environmental conditions. A lack of adequate geotechnical investigations and soil characterization can result in the over-design of foundations, unexpected excavations to remove unsuitable soils, cost overruns, construction delays; and, contract disputes. In this research, an experimental plan was executed to determine the engineering properties of subgrade soil in Jimma Town in southwestern Ethiopia by using both disturbed and undisturbed soil samples. The plan included tests to determine the moisture content, specific gravity, grain-size analysis, Atterberg limits, compaction-density relationship, California Bearing Ratio (CBR), unconfined compression strength, and triaxial shear strength. X-ray diffraction (XRD) analysis was also conducted to determine the chemical composition of the soil. The soil characterization indicated that soft clay is the predominant subgrade soil type and that it has a very low load-bearing capacity, high plasticity, low strength and, high compressibility, which makes the soil unsuitable to serve as a highway subgrade without the help of soil improvement techniques.

scholarly journals ANALYSIS OF LATERITE SOIL WITH PORTLAND CEMENT MIXED VARIATIONS AND THE EFFECT ON THE CBR UNSOAKED

2021 ◽  
Vol 5 (2) ◽  
pp. 60-73
Author(s):  
Ahmad Ravi ◽  
Hurul 'Ain ◽  
Betti Ses Eka Polonia ◽  
M. Hanif Faisal
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Road Construction ◽  
Chemical Compounds ◽  
Soil Improvement ◽  
Expansive Clay ◽  
Traffic Loads ◽  
Construction Loads ◽  
Strength And Durability ◽  
Test Result

Ketapang and Kayong Utara Regency have road construction that often suffers damage before the planned life age caused by the behavior of expansive clay. The subgrade is a fundamental structure in building road construction because the subgrade will support traffic loads or construction loads. The strength and durability of the pavement structure road will depend on the properties and bearing capacity of the subgrade. Practically soil stabilization is a reinforcement engineering against foundation or subgrade by using mixed materials. Therefore, different soil improvement variations are needed. Based on the test result, the CBR value of Sukadana initially gets a 2.95% point. The CBR value for the 6% and 10 % mixture, respectively, gets 17.14% and 25.02%. The CBR value of Sungai Melayu Rayak originally get 4.65% point. Then, for the 6% and 10% mixture, the CBR values increased by 13.78% and 18%. The value of the bearing capacity of the highway soil construction can be know from the results of CBR testing on each variation. The CBR also can measure the strength of the soil. The addition of cement to the earth tends to increase the bearing capacity of the ground. It is because cement can function as a binder between soil particles with chemical compounds contained in cement.

scholarly journals The Evaluation of Geotechnical Properties of Precambrian Hazara Slates, Hazara-Kashmir Syntaxis, Azad Kashmir, Pakistan

2019 ◽  
Vol 10 (2) ◽  
pp. 129-133
Author(s):  
Muhammad Alam ◽  
Javed Akhtar Qureshi ◽  
Garee Khan ◽  
Manzoor Ali ◽  
Shaheen Shah
Keyword(s):  
Sedimentary Rocks ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Ratio Test ◽  
Rock Unit ◽  
Fold And Thrust Belt ◽  
Elongation Index ◽  
Azad Kashmir ◽  
Flakiness Index ◽  
Aggregate Material

The fold and thrust belt of the eastern Hazara division characterised the sedimentary rocks of Precambrian toPaleocene age. The sequence and formation of Precambrian signify the oldest rock unit as Hazara Slate. Geologicalmap of the study area was prepared at the scale of 1:75,000 for about 140 square kilometre area located inMuzaffarabad (Azad Kashmir) district and Lohargali of Abbottabad (Khyber Pakhtunkhwa) district. The lab analysisshows that it is not rational to use Hazara slates as aggregate material due to its mineral accumulation and composition.Los Angele’s Abrasion Value, Impact Value, Crushing Value, Specific Gravity, Water Absorption, Flakiness Index,Elongation Index, Porosity Value, California Bearing Ratio test and Grain Size Analysis were done and co-related withB.S standards and the parameters were deduced. It was observed that the mineral composition of Hazara Slates rangesfor illite, kaolinite, quartz and carbonate. Kaolinite and illite are clay minerals which haveswelling potential to causeconstruction material damage the material. The presence of Carbonate and Quartz gives strength to the material, but itspercentage is low. Reserves calculation of different localities was also done for the quarry development.

scholarly journals Geotechnical Properties of Rubber Tires and Sediments Mixtures

2014 ◽  
Vol 4 (2) ◽  
pp. 618-624 ◽  
Author(s):  
H. Sellaf ◽  
H. Trouzine ◽  
M. Hamhami ◽  
A. Asroun
Keyword(s):  
Geotechnical Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
High Plasticity ◽  
Dredged Sediment ◽  
Scrap Tire ◽  
Rubber Content ◽  
Tire Rubber ◽  
North West ◽  
Scrap Tire Rubber

An experimental work was undertaken to study the effect of rubber tires on the geotechnical properties of a dredged sediment, using a mixing ratio of large size. For comparison, two types of soil were studied (dredged sediment from Fergoug dam and Tizi Tuff from the north west of Algeria). Taking into account the high compressibility and the low water absorption of the rubber tires, grain size analysis, density, Atterberg limits analysis, chemical composition, direct shear tests, loading-unloading tests, modified Proctor and CBR tests are performed on the two soils and their mixtures with different scrap tire rubber (10, 20, 25 and 50%). The results show that liquid limits and plastic indexes decrease with the scrap tire rubber content and that the decrease is more significant for soil with high plasticity. Cohesion also decreases with scrap tire rubber content when the internal friction angle is vacillating. Compression and recompression indexes increase gradually with the scrap tire rubber content and the variation for compression index is more significant for the two soils. Compaction characteristics and CBR values decrease with scrap tire rubber content. The CBR values for W=3% are important compared to those with W=5% excepted for mixture with (75% tuff and 25% scrap tire rubber). The results show that the scrap tire rubber can be used as a reinforcement material for dredged soil, but with a content that should not highly affect the compressibility.

scholarly journals The Evaluation of Geotechnical Properties of Precambrian Hazara Slates, Hazara-Kashmir Syntaxis, Azad Kashmir, Pakistan

2019 ◽  
Vol 10 (2) ◽  
pp. 129-133
Author(s):  
Muhammad Alam ◽  
Javed Akhtar Qureshi ◽  
Garee Khan ◽  
Manzoor Ali ◽  
Shaheen Shah
Keyword(s):  
Sedimentary Rocks ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Ratio Test ◽  
Rock Unit ◽  
Fold And Thrust Belt ◽  
Elongation Index ◽  
Azad Kashmir ◽  
Flakiness Index ◽  
Aggregate Material

The fold and thrust belt of the eastern Hazara division characterised the sedimentary rocks of Precambrian toPaleocene age. The sequence and formation of Precambrian signify the oldest rock unit as Hazara Slate. Geologicalmap of the study area was prepared at the scale of 1:75,000 for about 140 square kilometre area located inMuzaffarabad (Azad Kashmir) district and Lohargali of Abbottabad (Khyber Pakhtunkhwa) district. The lab analysisshows that it is not rational to use Hazara slates as aggregate material due to its mineral accumulation and composition.Los Angele’s Abrasion Value, Impact Value, Crushing Value, Specific Gravity, Water Absorption, Flakiness Index,Elongation Index, Porosity Value, California Bearing Ratio test and Grain Size Analysis were done and co-related withB.S standards and the parameters were deduced. It was observed that the mineral composition of Hazara Slates rangesfor illite, kaolinite, quartz and carbonate. Kaolinite and illite are clay minerals which haveswelling potential to causeconstruction material damage the material. The presence of Carbonate and Quartz gives strength to the material, but itspercentage is low. Reserves calculation of different localities was also done for the quarry development.

scholarly journals MENINGKATKAN NILAI CBR TANAH SUB-GRADE DENGAN STABILISASI TANAH KAPUR

2019 ◽  
Vol 13 (1) ◽  
pp. 50
Author(s):  
Moch Sholeh ◽  
Yunaefi Yunaefi
Keyword(s):  
Road Construction ◽  
Soil Improvement ◽  
Clay Soils ◽  
Dry Density ◽  
Chemical Stabilization ◽  
High Plasticity ◽  
Expansive Clay ◽  
A Value ◽  
Poor Soil ◽  
Low Shear

Poor soil properties and disadvantage when used as the basis of a building or road construction, including high plasticity, low shear strength, large volume or density changes and large shrinkage potential. Various methods are used to improve the strength of expansive clay soils, including by adding chemicals (chemical stabilization). Soil improvement that has been done is to mix the soil with lime, but only to review the dry density (γd). The purpose of this study is to explain the effect of adding lime to the soil on increasing CBR values, swelling, and knowing the optimum lime percentage in order to obtain maximum CBR and minimum swelling values. The results of the original soil swelling test showed a value of 9.14%, with the addition of lime percentage the swelling value showed a decrease. From the results of the addition of lime percentage showed the greatest decrease occurred in the addition of lime by 12% that is equal to 70.35%. So it can be concluded with the addition of lime will improve the original soil because it can reduce the value of swelling

scholarly journals Geoengineering Assessment of Subgrade Highway Structural Material along Ijebu Owo – Ipele Pavement, Southwestern Nigeria

2020 ◽  
pp. 57-69
Keyword(s):  
Shear Strength ◽  
Clay Mineralogy ◽  
California Bearing Ratio ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Southwestern Nigeria ◽  
Kaolinite Clay ◽  
Static Water ◽  
Under Construction ◽  
Geotechnical Tests

Geochemical, geotechnical, and geophysical investigations were carried out along Migmatite gneiss underlain Iyere – Ipele pavement (under construction) in order to assess the suitability of the imported subgrade soil. Also static water level (SWL) was obtained from five open wells along the highway. The geotechnical tests include specific gravity, grain size analysis, consistency limits, consolidation, compaction, and California Bearing Ratio (CBR), and shear strength; while geochemical tests were analyzed using X-ray fluorescence and Atomic Absorption Spectrophotometer (AAS). The results show that SiO2, Al2O3 and Fe2O3 constitute an average of 46.2%, 23.30% and 26.54% respectively of the soils chemical composition. The silica- sesquioxide ratio of the samples ranges from 0.89 to 0.96 and classified as true laterite. The topsoil along the highway is made of moderately competent/competent soil with resistivity ranging from 298 – 924 ohm-m and thickness of 3.1 - 8.2 m. The SWL varies from 3.3 - 5.5 m with an average of 4.3 m (moderately low). The soils are characterized by high California Bearing Ratio values, moderate shear strength (150 – 200kpa), and unconfined compressive strength (300 – 420kpa) with predominant kaolinite clay mineralogy group. The AASHTO and USCS classification system rate the soils as good and fair/good respectively.

scholarly journals PERBANDINGAN PENGGUNAAN SEMEN DAN GARAM UNTUK STABILISASI TANAH DASAR

2019 ◽  
Vol 12 (2) ◽  
pp. 93
Author(s):  
Zuhrufah Diana Azza, Gerard Aponno, Dwi Ratnaningsih
Keyword(s):  
Bearing Capacity ◽  
Classification System ◽  
Soil Stabilization ◽  
American Association ◽  
Road Construction ◽  
Soil Classification ◽  
High Plasticity ◽  
The Road ◽  
State Highway ◽  
Before And After

Soil is the key of the road foundations. Soil of high CBR value will have good bearing capacity for road construction. Conversely, soil stabilization must be carried out to the subgrade that has bad bearing capacity. The goals of this analysis are to find out the soil characteristict of before stabilization, CBR values of before and after stabilization, the optimum cement use and salt (NaCl) use as stabilizers.The results of soil poperties test in Silt High Plasticity (MH) based on Unified Soil Classification System (USCS) and A-7-5 based on American Association of State Highway and Transportation Official (AASHTO). The result of CBR without stabilization is 3.64% for standard soaked and 5.13%  for modified soaked. The maximum results of stabilized testing with cement showed 9.802 % CBR; 69.298% CBR of each sample respectively standard and modified soaked test; of salt showed 3.93% CBR; 5.33% CBR of standard and modified soaked test of each sample respectively.   Keywords: CBR, cement, NaCl, soil stabilization

scholarly journals Geotechnical properties of lateritic soil as subgrade and base material for road construction in Abeokuta, Southwest Nigeria

2018 ◽  
Vol 6 (1) ◽  
pp. 78
Author(s):  
Layade Gideon Oluyinka ◽  
Ogunkoya Charles Olubunmi
Keyword(s):  
Specific Gravity ◽  
Moisture Content ◽  
Base Material ◽  
Road Construction ◽  
Geotechnical Properties ◽  
Lateritic Soil ◽  
Size Analysis ◽  
Dry Density ◽  
Ratio Test ◽  
Regulatory Standards

Lateritic soils that overburden Mohammad Buhari Estate in Abeokuta area of Ogun State, Nigeria is in great use for road construction. However, little is known of their geotechnical properties and suitability as base, sub-based and sub-grade materials for road construction. This study is aimed at utilizing in accordance with regulatory standards of Nigeria, the geotechnical techniques to investigate the properties of this lateritic soil. The samples were collected at 0. 25m deep at different locations and were subjected to the following laboratory test; Particle size analysis, Atterberg limits test, Compaction test, Californian Bearing Ratio test, Moisture content and Specific gravity test. The result shows un-soaked CBR test from 12.52-55.84 %. The specific gravity results range from 2.57-2.89 while the optimum moisture content and maximum dry density range from 18.20-28.30% and 1.48-1.81mg/m3 respectively. The liquid limit, plastic limit and plastic index ranges from 12.0 to 40.1%, 10.0 to 22.0% and 2.8 to 20.4% respectively. This implies that lateritic soil present throughout the study area is suitable for use as sub-base and base materials since the geotechnical properties are fairly within the regulatory standards of Nigeria.

scholarly journals CORE LOG AND CONE PENETRATION TEST APPROACH FOR BEARING CAPACITY ANALYSIS OF QUATERNARY DEPOSIT AND ITS CORRELATION TO FACIES DISTRIBUTION IN SOUTHERN BALI

2020 ◽  
Vol 35 (4) ◽  
pp. 1-14
Author(s):  
Nugroho Aji Satriyo ◽  
Eko Soebowo ◽  
Imam Achmad Sadisun
Keyword(s):  
Bearing Capacity ◽  
Depositional Environment ◽  
Cone Penetration Test ◽  
Shallow Foundation ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Capacity Analysis ◽  
Penetration Test ◽  
Cone Penetration ◽  
Quaternary Deposit

Area development deals with optimal land use and the reduction of the risk of geological disasters. The coastal area of South Bali is prone to land settlement hazards. In order to mitigate the risk, it is important to understand the depositional environment of the area related to its bearing capacity and geological hazard risks. The aim of this research is to understand the subsurface depositional environment and quantifying its bearing capacity. Quantitative modeling was carried out to obtain the sediment-bearing capacity of the Pendungan area in Bali, Indonesia. The methods used in this research were the observation of borehole cores, the identification of the cone penetration test (CPTu) curves pattern, the sediment index property test, the soil strength laboratory, and bearing capacity analysis. Based on lithologic association, the CPTu curve pattern, and grain size analysis, there are three facies developing in the study area with different bearing capacity values. Generally, beach ridge sand has a higher bearing capacity (N-SPT value of 8 – 52) for shallow foundation than fluvial clay. Meanwhile, floodplain facies has the lowest bearing capacity (N-SPT value of 2 – 20).

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