CE 353 Geotechnical Engineering Dr M. Touahmia 6 Soil Compaction Lecture Outline: 1. 2. 3. 4. 5. 6. 7. General Principles Standard Proctor Test Factors Affecting Compaction Modified Proctor Test Field Compaction Measurement of Field Compaction Special Compaction Techniques Textbook: Braja M. Das‚ "Principles of Geotechnical Engineering"‚ 7th E. (Chapter 6). 1 General Principles What is compaction? • Many types of earth construction‚ such as roads‚ railways
Premium Soil mechanics Density Water
A soil horizon is a layer parallel to the soil surface‚ whose physical characteristics differ from the layers above and beneath. Each soil type has at least one‚ usually three or four horizons. Horizons are defined in most cases by obvious physical features‚ chiefly colour and texture. These may be described both in absolute terms (particle size distribution for texture‚ for instance) and in terms relative to the surrounding material‚ i.e. ‘coarser’ or ‘sandier’ than the horizons above and below
Premium Soil
Q1. You are asked to create soil that would be considered very fertile. What would you include in your "recipe?" I would try to create a soil order all of my own‚ combining Inceptisols and Mollisols unique characteristics. My terrain for my soil to be placed would be on a mostly flat to gently sloping surface to provide good drainage‚ minimum erosion‚ and sufficient time for nutrients to drain into the soil. My “O” soil horizon will be mostly compost made from fallen leaves and other organic
Premium Soil
Determining Causes and Effects of Lake Huron Brian Jones Weber English Composition 5/19/2013 In today’s Ecosystem there are so many factors of cause and effect of pollution in any areas of the world. Pollutants affect the air that keeps us breathing‚ the animals that we hunt or fish‚ and even the water that we drink. Food‚ water‚ and oxygen are the most important things we need in order to survive a world full of life. With this being said Lake Huron and the other Great Lakes are being extremely
Premium Great Lakes Pollution Lake Michigan
Title L6 – Soil Permeability – Constant Head Test Introduction Permeability is measured in term of water flow through the soil in a given time. The soil permeability is a very important factor to study the behavior of soil in its natural condition with respect to water flow. The size of pore space and interconnectivity of the spaces help determine permeability‚ so shape and arrangement of grains play a role. Often the term hydraulic conductivity is used when discussing groundwater properties
Premium Sand Soil mechanics Aquifer
Daly‚ A. and P. Zannetti. 2007. An Introduction to Air Pollution – Definitions‚ Classifications‚ and History. Chapter 1 of AMBIENT AIR POLLUTION (P. Zannetti‚ D. Al-Ajmi‚ and S. Al-Rashied‚ Editors). Published by The Arab School for Science and Technology (ASST) (http://www.arabschool.org.sy) and The EnviroComp Institute (http://www.envirocomp.org/). Chapter 1 An Introduction to Air Pollution – Definitions‚ Classifications‚ and History Aaron Daly and Paolo Zannetti The EnviroComp Institute
Premium Air pollution
Latoya Walker Terrorism (89) Movie Review On Native Soil What happened on September 11th 2001 was a tragedy‚ many innocent people lost their lives‚ and these people include police‚ firefighters‚ and many others. No one would have ever imagine that something so tragic could have happen‚ when all seem to be going fine with our country. September 11th has left a scar and on not just the families of those that died that day‚ but also the people
Premium September 11 attacks Al-Qaeda
Soil Mechanics Soil is the most misunderstood term in the field. The problem arises in the reasons for which different groups or professions study soils. Soil scientists are interested in soils as a medium for plant growth. So soil scientists focus on the organic rich part of the soils horizon and refer to the sediments below the weathered zone as parent material. Classification is based on physical‚ chemical‚ and biological properties that can be observed and measured. Soils engineers think
Premium Soil mechanics
SOIL NAILING INTRODUCTION: Since its development in Europe in the early 1970s‚ soil nailing has become a widely accepted method of providing temporary and permanent earth support‚ underpinning and slope stabilization on many civil projects in the United States. In the early years‚ soil nailing was typically performed only on projects where specialty geotechnical contractors offered it as an alternate to other‚ conventional systems. More recently‚ soil nailing has been specified as the
Premium Soil The Wall
Ohene Akuoko 10/24/12 Soil and Environment Classification of Soil based on Sedimentation Rates Introduction Soil is a naturally occurring substance covering the upper level of Earth’s Continental Crust which sits upon Earth’s highest layer of geological area the lithosphere. Soil is actually nothing more but the remnants of the Earth’s Mountains and the life that has lived on this planet through the natural process of erosion and time on Earth. A good soil is said to be composed of 5 % organic
Premium Soil Sand Silt