BUILDING MATERIAL AND CONSTRUCTION:
Lab test of Rock,Brick,Cement,Aggregate,Concrete etc
ex:
sand + Cement = Mortar
Mortar + Coarse aggregate = Concrete
Different Test of Brick:
1) Crushing strength test by UTM in lab
Standard result are 10.5N/mm2 (1st class) 7.5(2nd class) 3.5(3rd class)
Stand. Size of brick- 19x19x9
2)- Water absorption test - Not more than 20% Of water by Wt. If immersed in water for 24hr - 1st class
Not more than 22% water- 2nd class & 24% - 3rd class
Many other test of brick- Hardness test,Toughness test.
English, Fleming, strecher & Header bond of brick masonary.
CONCRETE:
Strong in Compression & weak in tension (i.e we provide steel bar)
Grade(Nominal mix)- M10- 1:3:6 M15- 1:2:4 M20- 1:1.5:3 M25- 1:1:2
Know about admixture
Geo-technical engineering:
Index properties of soil, Phase diagram of soil, Classification of soil
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