scholarly journals Study the Geotechnical Properties for Recent Deposits/AL-Fursan Area North of Tikrit

2019 ◽  
Vol 24 (5) ◽  
pp. 38
Author(s):  
Salih Rakan Shalal ◽  
Mohammed Rashid Abood ◽  
Amera Ismail Hussain
Keyword(s):  
Internal Friction ◽  
Geotechnical Properties ◽  
Silty Sand ◽  
Engineering Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Test Results ◽  
Cohesion Strength ◽  
Area North ◽  
Properties Of Soil

Four sites with different depth in AL-Fursan area/ North Tikrit city were selected for recent deposits sampling. The geotechnical properties of soil were tested and improvement of engineering properties of soil by cement was carried out. The geotechnical properties  test results revealed that the moisture content ranges between (0.53 -1.45)% which is low because of  sampling in summer season, while the grain size analysis show that the soil at the study area is coarse soil (sand) with fines. The soil type in the first site is clayey sand (SC), the second site contains sand with equal percentage of silt and clay (SC- SM) , the third and fourth site types are silty sand (SM). The specific gravity ranges between (2.46- 2.72) sites (1,2,3) are low liquid limit and low swelling index but the fourth site is moderate. The value of cohesion strength for the four sites are (16, 13, 1, 8)kPa respectively, sites (1) and (2)  are moderate cohesion while sites (3) and (4) are non-cohesion, none plastic and un active. The low values of cohesion strength belongs to high percentage of coarse particles in the area. The values of internal friction angles ranges between (300- 370). The consolidation test results revealed  that all sites were moderate compressive index except the first site which is low compressive and low swelling. The study area soil are neutral and high content of gypsum and soluble Dissolved salts and also high organic content. The soil improvement by cement tests results show increasing of cohesion and internal friction angle and the compaction test results show the samples are well sorted.   http://dx.doi.org/10.25130/tjps.24.2019.087

scholarly journals Comparison of Geotechnical Properties of Laterite, Kaolin and Peat

2015 ◽  
Vol 773-774 ◽  
pp. 1438-1442 ◽  
Author(s):  
Siti Aimi Nadia Mohd Yusoff ◽  
I. Bakar ◽  
Devapriya Chitral Wijeyesekera ◽  
Adnan Zainorabidin ◽  
Aziman Madun
Keyword(s):  
Specific Gravity ◽  
Moisture Content ◽  
Initial Moisture Content ◽  
General Information ◽  
Geotechnical Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Proctor Test ◽  
Construction Operation ◽  
Soil Behaviour

This paper compares some geotechnical properties of Kaolin, Laterite and Peat. Laterite was collected from Bukit Banang while Peat sample was collected from Parit Nipah, both locations were in Batu Pahat, Johor. Meanwhile, kaolin that was used in this research was manufactured kaolin. These soil samples were subjected to routine laboratory analysis and resulting data were analyzed statistically using a correlation analysis. A laboratory testing program consists of “Basic properties test” to obtain general information on the materials (e.g Natural moisture content, Atterberg Limit, Specific gravity, grain size analysis, chemical composition and pH) and “Geotechnical properties tests” to measure specific properties that characterize soil behaviour for design and constructability assessments (e.g Standard Proctor Test, Unconfined Compressive Strength and CBR).The results showed that the Natural/initial moisture content for laterite, peat and kaolin is 22.54%, 480.61% and 0.22% respectively. Meanwhile Specific gravity for each soil was in the range 1.50-2.79.It was also found that the pH of all soil is acidic which lay in the range of 3.76-5.95.The UCS for the optimally compacted sample of laterite is 445.77 kPa, kaolin is 199.23 kPa and for peat is 58.70 kPa. This paper summarizes the result of analysis performed on all tests conducted. Based on the results, the geotechnical property of the soil is a highly dependent with the type of soil and therefore, determining the soil characterization and the soil strength should be considered during the planning phase of any earthwork construction operation.

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 Effect of Saturation Levels on Shear Strength and Bearing Capacity Properties of Soil Types

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Mahmood D. Ahmed ◽  
Alaa D. Almurshedi ◽  
Hayder H. Alwan
Keyword(s):  
Bearing Capacity ◽  
Unsaturated Soils ◽  
Soil Classification ◽  
Soil Samples ◽  
Engineering Properties ◽  
Test Results ◽  
Soil Layers ◽  
Angle Of Internal Friction ◽  
Noticeable Reduction ◽  
Properties Of Soil

This study presents a comprehensive set of laboratory works for the examined soil layers extracted from Baghdad city (specifically from Alkadhimya, Alaitaifiya, and Alhurriya) to illustrate their engineering properties. The researchers have adopted the unified soil classification system for soil classification purposes. Also, the direct shear test was performed for soil samples with various degrees of saturation (0%, 25%, 50%, 75%, and 100%). The test results have shown a significant reduction in cohesion property with higher moisture content within soil samples. Also, a noticeable reduction in angle of internal friction value has occurred with such changes. Furthermore, it has been found that the bearing capacity of unsaturated soils ranged between 2000 and 3000 KPa, and about 500-700 KPa for the soaked soil samples.

scholarly journals A Virtual and Comparative Study on Soil Features and its Managing Ability

2021 ◽  
Vol 9 (1) ◽  
pp. 159-163
Author(s):  
Anuja Narayanan
Keyword(s):  
Empirical Models ◽  
Geotechnical Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Structural Factors ◽  
Simple Method ◽  
Angle Of Internal Friction ◽  
Soil Features ◽  
Different Types ◽  
A Site

The study is related to the comparison of soil characteristics in some areas from a depth of 1m, 1.2m, and 1.5m; physical and geotechnical properties of the soil samples are studied in the laboratory to develop a simple method to determine the type of soil on a site. The tests conducted are grain size analysis, specific gravity, and field density. Moreover, the research intends to validate the behavior of sieving systems for different types of soils and at various loading conditions. From work, a decision support system to facilitate a sieving system that integrates geological, geotechnical, and structural factors is developed. The study reveals that an increase in the plasticity index decreases the angle of internal friction. The empirical models developed with the help of regression analysis for the benefit of field engineers for predicting the geotechnical properties.

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 Experimental Examination on Utilization of Processed Mine Overburden Sand by Substituted to River Sand in Construction

2020 ◽  
Vol 9 (5) ◽  
pp. 1858-1865
Keyword(s):  
Mine Waste ◽  
Construction Materials ◽  
Mining Industry ◽  
Mining Area ◽  
Geotechnical Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Land Resource ◽  
River Sand ◽  
Natural Sand

Overburden is the unutilized rock or soil bands that are generated during the mining process and are dumped near the marked placed inside the mine boundaries. It contains alluvial, sandstone, soil, gravel, clay, debris other than mining material. Dumping or management of this mine waste is a significant environmental problem, and additional cost spends to the mining industry. And also, most of this waste is disposed of at the surface, which inevitably requires extensive planning. Sand and gravel are low energy-intensive construction materials, but the growing demand for industrial uses has depleted this natural source. Limitations to natural sand extraction and legal regulations have been imposed in several countries due to environmental concerns. Due to the above, all the reasons river sand has become very costly in recent years. The research has been carried out to convert the overburden to processed overburden sand after that compared the geotechnical properties like specific gravity, permeability, moisture content, and grain size analysis, swell factor of both the overburden processed sand and natural river sand. Then we check the suitability of processed overburden material as a replacement to natural river sand in construction by comparing the strengths of the concrete samples prepared with both the river sand and processed overburden sand. We found the average compressive strength of overburden sand brick is 24.69 MPa, and river sand brick is 28.08 MPa of 14 days curing of bricks. The results obtained that the processed overburden sand can be used as the best alternative for the river sand because the geotechnical properties of both are almost the same. This processed overburden utilization in the coal mining area to reduced environmental impact, more availability of a land resource, minimizing the overburden disposable cost to the mining industry, and it’s also helpful to the preservation of natural river sand.

scholarly journals Sedimentological Properties of the Sand Dunes and Valley Sediments in Al-Muthanna, Southern Iraq

2021 ◽  
Vol 54 (1F) ◽  
pp. 69-84
Author(s):  
Mohammed L. Hussein
Keyword(s):  
Sand Dunes ◽  
Minor Component ◽  
Alkali Feldspar ◽  
Silty Sand ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rock Fragments ◽  
Southern Iraq

Sedimentological properties of the dunes and valley terrigenous sediments in Al-Muthanna Governorate, southern Iraq were carried out. Ten samples were collected, where five samples from both sand dunes, and valley sediments. Grain size analysis revealed that sand, silt and clay fractions are the constituents of these sediments. Sand fractions predominant in the dunes and the texture is classified as silty sand, whereas clay fractions dominate in the valley sediments, with sandy clay texture. The mineralogy is determined by X-ray diffraction, which revealed that quartz is the main mineral in both study areas, followed by calcite, feldspars in lesser amount and evaporates (gypsum) in minor component of the light minerals. Petrographically, monocrystalline quartz dominates over polycrystalline quartz in both areas. Rock fragments in the valley sediments are higher than in the sand dunes, which are comprised of carbonate, chert, igneous, metamorphic, evaporate, and mudstone rock fragments. Feldspars are approximately similar in the study areas and comprised mainly alkali feldspar (potash feldspar) and plagioclase. Petrogenically, the sand dunes occupy the quartzose-recycled field, while the valley sediments fall in transitional recycled fields represented recycled orogeny.

scholarly journals Pengolahan Sedimen Layang dan Sedimen Terendap Survei Hidro-Oseanografi Banjarmasin 2015

2016 ◽  
Vol 2 (1) ◽  
pp. 71-88
Author(s):  
Ngavif Ardani ◽  
Saroso Saroso ◽  
Kamija Kamija ◽  
Khoirol Imam Fatoni
Keyword(s):  
Grain Size ◽  
Silty Sand ◽  
Grain Size Analysis ◽  
Size Analysis

Keselamatan pelayaran adalah suatu keadaan terpenuhinya persyaratan keselamatan dan keamanan yang menyangkut aktivitas angkutan pada alur pelayaran dan di pelabuhan. Salah satu kendala yang dihadapi untuk mendukung terlaksananya kegiatan di pelabuhan dengan aman adalah terjadinya pendangkalan kolam. Laju sedimentasi yang cepat merupakan kendala bagi kelancaran operasional pelabuhan Banjarmasin dan alur pelayarannya. Penting dilakukan kajian untuk mengetahui karakteristik proses sedimentasi yang terjadi. Karakter sedimen laut dapat diidentifikasi dengan ukuran butir sedimen, komposisi sedimen, mekanisme transportasi, dan lingkungan pengendapan. Ukuran butir adalah sifat-sifat yang sangat fundamental dari partikel sedimen, mempengaruhi pengangkatan (entrainment), transport dan pengendapan sedimen. Analisa ukuran butir sedimen memberikan kunci penting bagi asal-usul sedimen, sejarah transportasi, dan kondisi pengendapan. Analisa ukuran butir sedimen memberikan gambaran tentang sifat-sifat fisik sedimen yang berkaitan dengan kemungkinan pemanfaatannya untuk berbagai keperluan. Adapun untuk pengolahan sedimen layang dapat dilakukan dengan metode penyaringan (filtering) dan sedimen terendap dengan metode kering sampai dengan mendapatkan hasil jenis sedimen dan analisis ukuran butir (Grain Size Analysis). Hasil pengolahan sedimen tersebut didapatkan nilai rata-rata kandungan sedimen layang pada daerah survei adalah 0,0309 gram/liter dan berdasarkan ukuran rata-rata dari ukuran partikel sedimen yang mendominasi adalah fraksi pasir dengan jenis Silty Sand. Berdasarkan nilai Sortasi, terlihat bahwa partikel sedimen pada umumnya terpisah dengan buruk dengan klasifikasi Poorly Sorted. Dilihat dari nilai kurtosisnya didominasi jenis leptokurtic. Selanjutnya dari nilai Skewness dominan bernilai negatif, hal ini dapat menggambarkan bahwa kecendrungan partikel kasar.

scholarly journals Geotechnical Properties of Termite Mound Soil as Construction Material

2020 ◽  
pp. 45-58
Author(s):  
Hammed A. Olayiwola ◽  
K. A. Apanpa ◽  
Anjorin, Ademola
Keyword(s):  
Construction Material ◽  
Soil Samples ◽  
Geotechnical Properties ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Termite Mound ◽  
Termite Mounds ◽  
Cbr Test ◽  
Compressive Strength Test ◽  
Southwest Nigeria

This study investigates variation of termite mounds in relation to the control soils around our environment that are not hindered by the termites at various locations at The Polytechnic; Ibadan, Oyo State, southwest Nigeria. From the study area, five termitaria were selected at random. At the core of termitaria, soil samples were taken at a distance of 7.5m and 15m to the both side of termitaria. Twenty five (25 soil samples were collected in all and were subjected to geotechnical properties such as natural moisture content, grain size analysis, california bearing ratio (CBR) test, Atterberg’s limits, and unconfined compressive strength test. The results proved that termite mound soil have better geotechnical properties compared to surrounding control soil. The betterment was attributed to the activities of termites in termitaria thus increasing the strength parameters present in the soil.

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