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WorksheetsDay 87-Dec 24-worksheet-Diploma-Filler materials
Total questions: 15
Worksheet time: 11mins
Which of the following best explains why sand acts as a filler material in mortar?
It increases setting time
It occupies voids and reduces cost
It accelerates hydration
It acts as binding material
Which sand is excavated at a depth of about 1–2 m from ground level and is considered excellent for construction?
River sand
Sea sand
Pit sand
Gravelly sand
Bulking of sand reduces when:
Moisture content increases beyond a limit
Sand becomes finer
Sand is angular
Sand is dry
Sand passing through a sieve of 1.5875 mm clear opening is classified as:
Coarse sand
Gravelly sand
Fine sand
Pit sand
Which of the following mortar types is unsuitable for water-logged areas?
Cement mortar
Lime mortar
Gauged mortar
Gypsum mortar
Which additive makes mortar fire-resistant?
Gypsum
Aluminous cement
Lime
Surkhi
Multiple choice: The bulk density of X-ray shielding mortar is approximately.
6kN/m3
12kN/m3
15kN/m3
22kN/m3
Bulking of sand is more pronounced in coarse sand than in fine sand.
True
False
Mortar is a composite material made of ————-
(a)
The binding material in lime mortar is (a) .
River sand has generally (a) shaped grains.
Bulking of sand is maximum when moisture content is about ______ to ______ percent.
(a)
Colour change to brown in the sodium hydroxide test indicates presence of (a) impurities.
The fineness modulus of good sand should lie between ______ and ______.
(a)
The process of adding cement to lime mortar is called (a) .
