Substructure Laboratory (Soil Mechanics Lab.)
The experiments dealing with the physical and mechanical properties of the disturbed, undisturbed and remolded soil specimens and some of the in-situ tests are performed by the Substructure Laboratory.
Laboratory Experiments:
1- Water content of soils using oven and Speedy Moisture apparatus
2- Grading (Sieve analysis)
3- Hydrometry
4- Liquid and Plastic limits (Atterberg’s limits)
5- Sand equivalent
6- Compaction characteristics of soils (Standard effort)
7- Compaction characteristics of soils (Modified effort)
8- In-place density using sand bottles
9- Relative density of cohesionless soils
10- California bearing ratio (CBR)
11- Unconfined uniaxial strength
12- Direct shear strength
13- Consolidation
14- Triaxial test
15- Permeability (Constant head)
In-situ Tests:
The in-situ tests that can be performed by the lab are as follows:
1- Plate Loading Test
2- In-situ CBR
3- Stamdard Penetration Test (SPT) for clayey and granular soils
Laboratory Apparatus:
Pic(1):Sieves & Shaker
![AWT IMAGE](files/rail/pages/sub2.jpg)
Pic(2):Oven
![AWT IMAGE](files/rail/pages/sub3.jpg)
Pic(3):Speedy Moisture Apparatus
![AWT IMAGE](files/rail/pages/sub4.jpg)
Pic(4):Hydrometer
Pic(5):Liquid Limit Apparatus
![AWT IMAGE](files/rail/pages/sub6.jpg)
Pic(6):Compaction Apparatus
![AWT IMAGE](files/rail/pages/sub7.jpg)
Pic(7):Relative Density
![AWT IMAGE](files/rail/pages/sub8.jpg)
Pic(8):CBR
![AWT IMAGE](files/rail/pages/sub9.jpg)
Pic(9):Sand Bottles
![AWT IMAGE](files/rail/pages/sub10.jpg)
Pic(10):Unconfined Uniaxial Strenght
![AWT IMAGE](files/rail/pages/sub11.jpg)
Pic(11):Direct Shear Strength
![AWT IMAGE](files/rail/pages/sub13.jpg)
Pic(12):Consolidation
![AWT IMAGE](files/rail/pages/sub14.jpg)
Pic(13):Push-out Jack
![AWT IMAGE](files/rail/pages/sub12.jpg)
Pic(14):Triaxial Apparatus
![](./files/rail/images/Labratory/15.jpg)
Pic(15): Digital triaxial testing apparatus
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