CIVE 2700 Lecture Notes - Lecture 17: Moraine, Relative Density, Tranche
4 Apr 2016
School
Department
Course
Professor
Document Summary
Moisture properties of timber are very important - affects on strength - k factors. Importance of grain direction - affects on strength i. e. know how and when to use the k factor (on final exam) Grain size analysis (not required to know - just basics) Know difference between glacial and deposits. Particles are results of weathering of rocks and organic decay of vegetation. Physical weathering: erosion from freeze/thaw, abrasion from glaciers, activity of plants/animals. Chemical weathering: reaction of rock minerals with oxygen, acids, salts, carbonation and leaching. *we don"t understand soil that well yet (still doing much research) Develops plastically (like putty) when mixed with water. Should not be used as foundations or even light structures, due to excessive settlement. *natural soils are a blend of constituent materials. Igneous rock and granite decompose to silty sands. Residual soil: soil that remains where it was formed. Transported soil: soil that weathers at one site and is transported by action of .
