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When the soil have been used a lot of times so it gets unhealthy. In other words it has been stressed out. Many Crops have been grown in it.
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What is preconsolidation stress in soil?
Preconsolidation stress is the maximum of vertical overburden stress that a particular soil sample has sustained in the past.
What is important of effective stress in soil mechanics?
Effective Stress is the grain to grain contact of soil particles. the higher the effective stress, the stronger the soil. effective stress at a certain depth is calculated as follows: Effective stress = total stress - pore water pressure the pore water pressure is often taken as water table. pore water pressure has a negative effectice on effective stress, as it hinders grain to grain contact.
What is the proposal for soil improvement under shallow foundation?
I need to know about soil improvement with respect to soil stress such as adding sand cement or similar higher stress material to get better bearing capacity.
Soil liquefsction occurs when?
A state of 'soil liquefaction' occurs when the effective stress of soil is reduced to essentially zero, which corresponds to a complete loss
What is the purpose of soil liquefaction?
Soil liquefaction is what happens when soil becomes weakened due to natural disasters such as an earthquake. The soil acts more like a liquid due to the stress.
What do you mean by plastic equilibrium of soil?
state of stress with in a soil mass or a portion there of that has been deformed to such an extant that its ultimate shearing resistance is mobilized
What is difference between normally consolidated sand and over consolidated sand?
When stress is removed from a consolidated soil, the soil will rebound, drawing water back into the pores and regaining some of the volume it had lost in the consolidation process. If the stress is reapplied, the soil will re-consolidate again along a recompression curve, defined by the recompression index. Soil that has been consolidated to a large pressure and has been subsequently unloaded is considered to be overconsolidated. A soil which is currently experiencing the maximum past vertical effective stress is said to be normally consolidated.
What is quick condition in soil mechanics?
Quick Condition is a condition which arises due to presence of water/moisture in a soil mass. When the pore water pressure is so much that it equals the total stress in the soil mass then the effective stress becomes zero as a result of this and there is so force which can hold the particles together and prevent sliding away of the soil particles. In such a case the soil mass behaves almost as a liquid and there is no strength in it. For eg, the slopes in soil mass become unstable in rainy seasons and slope failures occur on account of this. As soon as the water content is reduced the soil's effective stress is increased thereby resulting in stability.
Why the principle of effective stress important in soil mechanics?
coz at the end of structure construction soil grains are the one whic carry the load so useful in analysis of bearing capacity of granular soil
The quality of the soil on which the horse works is very important which hurt the horses joints and tendons the most?
A horse should have a mixture of hard and soft soil, if not it could stress or strain the tendons.
What is a soil scientist?
A soil scientist is someone who studies and knows about the properties of the types of soil on the earth's surface. Of what they are composed, how they behave under various types of mechanical or chemical stress, their value to agriculture, how they may be improved, how they are distributed around the globe and so on.
Where is Liquifaction most likely to occur?
Soil liquefaction is where soil behaves like a liquid, losing its structure and strength. It occurs at or near fault lines in earthquakes or in other conditions that apply stress to the ground.
