Which of the following is added for quick setting of cement
Anonymous Poll
24%
Gypsum
7%
Alum
8%
Zinc sulphate
61%
Aluminium sulphate
IES CIVIL
Which of the following is added for quick setting of cement
D) Aluminium sulphate
Common accelerator used to decrease the setting time of cement are calcium nitrate, sodium nitrate, calcium chloride, aluminium sulphate etc.
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Common accelerator used to decrease the setting time of cement are calcium nitrate, sodium nitrate, calcium chloride, aluminium sulphate etc.
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Separation of water, sand and cement from a freshly mixed concrete is known as
Anonymous Poll
64%
Segregation
2%
Flooding
33%
Bleeding
1%
Creeping
The permanent deformation of concrete with time under steady load is called
Anonymous Poll
4%
Visco-elasticity
2%
Vicidity
90%
Creep
4%
Relaxation
To prevent sulphate attack in concrete, for preparing concrete mix, water pH must be within
Anonymous Poll
19%
7-10
9%
4-6
20%
5-7
52%
6-9
💧 Gravitational water
👉 Water not held by soil but freely drains.
💧 Capillary water
👉 Water held in soil by surface tension
💧 Hygroscopic water
👉 Water not available for plant use.
➖➖➖➖➖➖➖➖➖➖➖➖
🔰⚫️ Aquifer ➡️ Contains and yield water
🔴 Aquiclude ➡️ Contains water but very less permeability hence no substantial yield
🔵 Aquitard ➡️ Only seepage is possible
⚪️ Aquifuge ➡️ Incapable to absorb or transmit water
➖➖➖➖➖➖➖➖➖➖➖➖
@IESCIVIL
👉 Water not held by soil but freely drains.
💧 Capillary water
👉 Water held in soil by surface tension
💧 Hygroscopic water
👉 Water not available for plant use.
➖➖➖➖➖➖➖➖➖➖➖➖
🔰⚫️ Aquifer ➡️ Contains and yield water
🔴 Aquiclude ➡️ Contains water but very less permeability hence no substantial yield
🔵 Aquitard ➡️ Only seepage is possible
⚪️ Aquifuge ➡️ Incapable to absorb or transmit water
➖➖➖➖➖➖➖➖➖➖➖➖
@IESCIVIL
http://objection2.rrbonlinereg.com/rkey0318/question.aspx?rno=3190062157#no-back-button
check revised RRB je answer key👆
@IESCIVIL
check revised RRB je answer key👆
@IESCIVIL
♦️Dimensions of Septic Tanks: Septic tanks shall have minimum width of 75 cm., minimum depth of 1 m. below the water level and a minimum liquid capacity of 1 cu.m.
♦️Length of tanks shall be 2 to 4 times the width.
♦️Minimum nominal diameter of pipe shall be 100 mm. further, at junctions of pipes in
manholes, direction' of flow from a branch connection should not make an angle
exceeding 45 degree with the direction of flow in the main pipe.
♦️The gradients of land drains under drainage as well as the bottom of dispersion trenches and soak way should be between 1:300 and 1:400
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♦️Length of tanks shall be 2 to 4 times the width.
♦️Minimum nominal diameter of pipe shall be 100 mm. further, at junctions of pipes in
manholes, direction' of flow from a branch connection should not make an angle
exceeding 45 degree with the direction of flow in the main pipe.
♦️The gradients of land drains under drainage as well as the bottom of dispersion trenches and soak way should be between 1:300 and 1:400
🔶🔶 @IESCIVIL 🔶🔶