Soil Mechanics and Foundation MCQ's
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Soil Mechanics and Foundation MCQ's
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HOW TO CHECK QUALITY OF CEMENT ON SITE--

(1)Colour Test--

✓colour must be uniform [Grey greenish shade]

(2)Float Test--

✓Take a cement and throw it into water and if -
°cement is sink in water then it has good quality
°cement floats it has bad quality

(3) Rubbing Test--

✓Take a pich of cement & rubbs in fingers if it is smooth it is good

(4)Date Of Packing--

✓As cement's age increases it's strength decreases

∆After 3 months of packing its strength decreases by 20 to 30%

∆After 6 months - Decreases by 30-40%

∆After 12 months - decreases by 40-50%
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Set No.19 MCQ's from 1 to 35
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Set No.19 MCQ's from 36 to 100 @civilconstructions.pdf

🔹Barrage -

A barrage is a type of low-head, diversion dam which consists of a number of large gates that can be opened or closed to control the amount of water passing through.

This allows the structure to regulate and stabilize river water elevation upstream for use in irrigation and other systems.

🔹Purpose -

1. To maintain pond level.

2. To raise the water level during low supplies. In case of higher floods, shutters are dropped down and overflow takes place while in case of gated weir, gates are raised during floods.

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Steps Involved In Concreting
Process
Concrete is a construction material made from a
mixture of cement, aggregate (sand or gravel), water
and sometimes admixtures in required proportions.
Following are the major steps which involved in
concreting process:
Steps In Concreting:
Batching:
The process of measuring different concrete
materials such as cement, coarse aggregate, sand,
water for the making of concrete is known as
batching. Batching can be done in two different
ways.
1. Volume Batching
2. Weight Batching.
In volume batching the measurements of concrete
materials are taken by volume & On the other hand
the measurements are taken by weight in weight
batching.
Mixing:
In this process, all the materials are thoroughly
mixed in required proportions until the paste shows
uniform color and consistency. Hand mixing and
machine mixing are the two different methods of
mixing.
Note: To achieve optimum quality the materials
should be mixed first in dry condition and then in
wet condition.
Transportation:
When the mixing is done properly the freshly made
concrete is then transported to the construction
site, this process is known as transportation. After
that, the concrete is correctly placed on the
formworks. Concrete can be transported to the site
location in two ways
1. Manual Transportation.
2. Mechanical Transportation.
Compaction:
Compaction is the process in which the air bubbles
are eliminated from the freshly placed concrete. It is
required to increase the ultimate strength of
concrete by enhancing the bond with reinforcement.
Curing:
Curing is the process in which the concrete keeps its
moisture for a certain time period to complete the
hydration process. Curing should be done properly to
increase the strength of concrete.
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