Soil ii presentation-department of urban and infrastructure engg,neduet.
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1) Four boreholes were drilled up to 50 m depth at the site of Tower H in DHA, Karachi to determine subsoil conditions. Standard penetration tests and other tests were performed on soil samples. 2) Grain size analysis, Atterberg limits, unconfined compression tests, point load tests, direct shear tests, and specific gravity tests were conducted to understand properties of the soil. 3) Results of the tests are presented in eight figures as part of the report on subsoil investigation.
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This study examined the effect of cement on the geotechnical properties of expansive Jamshoro soil in Pakistan. Jamshoro soil samples were mixed with 5%, 10%, 15%, and 20% cement by weight and cured for 1, 7, 14, and 28 days. Direct shear tests showed that shear strength increased with higher cement content and longer curing time, indicating improved cohesion. It was concluded that cement treatment effectively improved the geotechnical properties of Jamshoro soil by binding soil particles into larger aggregates and increasing shear strength and cohesion over time.
The Geotechnical Properties of Jamshoro Soil (Shale) With Cement
The geology of Jamshoro soil is nearly consist of multilayers in alternative form. The alternative layer of
Jamshoro soil occur in the form of lime stone and shale or vice versa. The basic aim of this research is to improve
the geotechnical properties of Jamshoro soil (shale) by using the cement as the stabilized material. This paper
reports the effect of cement on the geotechnical characteristic of the cohesive soil and swelling potential of the
Jamshoro soil. The soil sample used for testing purpose are thoroughly mixed to obtain the homogeneity. After
that thoroughly mixed was dried in the oven. Oven dried sample was mixed with cement at different proportion
that was 5% ,10%, 15% and 20% by the soil weight. Water content used in the mixture to form the specimens at
optimum moisture contents of the soil. The compacted this prepared soil specimen was done by followed the
procedure of standard proctor test. Compacted specimens were cured for the period of 1, 7, 14 and 28 days. After
the completion of curing duration of specimen direct shear test was done. On the base of experimental result, it
was concluded that the cement showed an appreciable improvement of the cohesion with the curing period.
shear strength of soil
This document discusses the shear strength of soils. It begins with an abstract describing shear strength and factors that influence it, such as particle interactions and stresses. It then outlines different methods to measure shear strength in the laboratory and field, including direct shear tests, triaxial shear tests, and vane shear tests. The Mohr-Coulomb failure criteria is also explained as a way to analyze shear strength based on normal and shear stresses. Key parameters that govern shear strength are identified as cohesion and the friction angle.
“STABILAZATION OF SOIL USING PLASTIC WASTE GENERATED FROM PLASTIC BAGS AND BO...
This document summarizes research on stabilizing expansive clay soils using plastic waste from bottles and bags. The plastic was cut into strips and added to soil samples at different ratios and sizes. Tests found adding plastic strips significantly improved shear strength, reduced swelling and cracking, lowered optimum moisture content, and slightly increased maximum dry density. Stabilizing expansive soils with plastic waste helps address the problem of plastic recycling while improving soil engineering properties.
Site Investigation.ppt
The document provides information on site investigation procedures for determining subsurface soil conditions. It discusses the purpose of site investigations which include selecting foundation type, evaluating load capacity, estimating settlement, and determining groundwater levels. The typical steps of a subsurface exploration program are outlined, including assembling structure information, conducting reconnaissance, preliminary borings, and detailed borings. Methods of soil and rock sampling are described along with tools used. Standards for boring depth and spacing are provided based on structure type and soil conditions. Finally, components of a geotechnical investigation report are summarized.
GE Lab manual.pdf
I am sharing here GEOTECHNICAL ENGINEERING LAB MANUAL for students and faculty. it will be helpful to all civil engineer and institutes.
Siteinvestigation
This document provides an overview of site investigation procedures for determining subsurface soil conditions. It discusses the purposes of site investigations, which include selecting foundation types, evaluating load capacity, estimating settlements, and determining potential foundation problems. The exploration program aims to determine soil stratification and engineering properties through borings, samples, and field tests. Standard procedures are outlined for boring depth and spacing, soil and rock sampling methods, groundwater level determination, and field strength tests like SPT, CPT, and PLT.
Piling design intro
Piling design
Pile Design and Construction Rules of Thumb
by Ruwan Rajapakse
Chapter 1 and 3
***pic in the slides are not my own creation but are credited, may be subjected to copyright.
Site Investegation
The process of determining the layers of natural soil deposits that will underlie a proposed structure and their physical properties is generally referred to as site investigation.
014
This study examined the effect of gradation and sample size on the compression index of coarse-grained clayey soils. Consolidation tests were performed on base soil samples and gradation-modified samples using both a Rowe consolidation cell and oedometer tests. The results showed that modifying the gradation by replacement or scalping techniques increased the compression index values compared to the base soils. The replacement modification technique produced results closest to the base soils tested in the Rowe cell. The study concluded the replacement technique provides a more reliable way to determine the compression index of coarse-grained clayey soils compared to scalping or standard oedometer tests.
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Geological site investigation for Civil Engineering Foundations
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Effectiveness of Marble Powder and Terrazyme as natural Soil Stabilizer Labor...
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The Geotechnical Properties of Jamshoro Soil (Shale) With Cement
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Soil ii presentation-department of urban and infrastructure engg,neduet.
- 1. URBAN AND INFRASTRUCTURE ENGINEERING DEPARTMENT SOIL MECHANICS II GROUP MEMBERS: MUHAMMAD QAISER (UE-16067) S.M. HAMZA SHAH (UE-16075) SAAD ARAIN (UE-16302) ALI RAZA RIZVI (UE-16078)
- 2. A program of Subsoil Investigation was undertaken to determine subsoil conditions for Tower “H” at Creek View & Terraces, Phase VIII, DHA, Karachi. Consolidated Engineering Services (Pvt) Ltd, Karachi carried out the program of the soil investigation. LIST OF TESTS PERFORMED: 1. Standard Penetration Test (SPT) 2. Grain Size Analysis 3. Atterberg Limits 4. Unconfined compression and Point Load Test 5. Direct Shear Test and Specific Gravity REPORT REFERENCE:
- 3. STANDARD PENETRATION TEST: A total of 4 boreholes were drilled up to 50 m depth. Rotary drilling method was used to advance the borehole to the required depth. SPT was performed at 1.5 m interval by using Donut hammer. Fig.1 (Bore log)
- 5. GRAIN SIZE ANALYSIS: This test is performed to determine the percentage of different grain sizes contained within a soil. Sieve analysis is performed to determine the distribution of the coarser, larger-sized particles, and the hydrometer method is used to determine the distribution of the finer particles. Fig.3 (Grain size Analysis :Percent Finer by Weight)
- 6. ATTERBERG LIMITS: Atterberg limits is a basic measure of the critical water content of fine-grained soils. These tests include shrinkage limit, plastic limit, and liquid limit. Depending on the water content of a soil, it may appear in four states: solid, semi-solid, plastic and liquid. Fig.4 (Atterberg Limits)
- 7. UNCONFINED COMPRESSION & POINT LOAD TEST: The primary purpose of the Unconfined Compression Test is to quickly determine a measure of the unconfined compressive strength of rocks or fine-grained soils that possess sufficient cohesion to permit testing in the unconfined state. Fig.5
- 8. Fig.6
- 9. DIRECT SHEAR TEST & SPECIFIC GRAVITY: A direct shear test is a laboratory or field test used to measure the shear strength properties of soil such as cohesion and Angle of internal friction. Fig.7
- 10. Fig.8