soil properties and stress week3

Question 1

what is soil a mixture of?

Answer 1

solid, liquid and gas

Question 2

what is a soil?

Answer 2

any of the deposits forming the earths crust which isn’t solid rock

Question 3

what are the different soil sizes?

Answer 3

silt, clay, sand, gravel, cobbles, boulders

Question 4

what is meant by granular soil?

Answer 4

when the particles of the soil DO NOT stick together when being compressed

Question 5

what is meant by cohesive soil?

Answer 5

when the particles of the soil stick together when being compressed

Question 6

what is peat?

Answer 6

soil made up of organic/plant matter, contains a high moisture content (not good for construction)

Question 7

what is soil mechanics?

Answer 7

the study of soil behaviour as an engineering material when a force is imposed on it

Question 8

what do soil properties depend on?

Answer 8

particle types and moisture content

Question 9

what is stress caused by?

Answer 9

an applied load and/or self weight

Question 10

what the different principles of soil?

Answer 10

stress, pore water pressure, density and unit weight, moisture content

Question 11

what is effective stress?

Answer 11

stress that passes through the soil skeletons

Question 12

what is particle size distribution?

Answer 12

the range of particle sizes in the soil

Question 13

what is plasticity?

Answer 13

the ability to deform without cracking

Question 14

at what stage is soil behaving plasticly?

Answer 14

when the moisture conten is between the plastic limit and the liquid limit

Question 15

what is the plasticity test called?

Answer 15

Atterberg limit test

Question 16

what is soil description?

Answer 16

a vision description of the soil properties

Question 17

what is phase relationship?

Answer 17

the proportion of solid, liquid and gas there are in the soil

Question 18

what test is phase relationship neede for?

Answer 18

compactibility