WorksheetsDay 85-Dec 22-worksheet-Diploma-Cement part 2
Total questions: 15
Worksheet time: 10mins
The standard consistency of cement paste is considered correct when the Vicat plunger penetrates:
10–12 mm from the top
3–5 mm from the top
5–7 mm from the bottom of the mould
Touches the bottom of the mould
The percentage of water used for determining the initial setting time of cement is:
0.85P
0.75P
0.50P
1.00P
As per IS specifications, the minimum initial setting time of Ordinary Portland Cement shall not be less than:
10 minutes
20 minutes
30 minutes
45 minutes
The soundness test of cement using Le-Chatelier apparatus is carried out to determine the presence of:
Alkalis
Gypsum
Uncombined lime
Silica
Which type of cement is most suitable for mass concrete works such as dams?
Rapid hardening cement
Ordinary Portland cement
Low heat cement
Quick setting cement
The cement preferred for canal linings and marine construction due to low C3A content is:
Pozzolana cement
High alumina cement
Sulphate resistant cement
White cement
The IS code for Rapid Hardening Cement is:
IS 269
IS 1489
IS 8041
IS 12269
True/False: Hydrophobic cement attains the same strength as Ordinary Portland Cement after 28 days.
True
False
True/False: Acid resistant cement is water resistant by default.
True
False
The weight of the movable rod in the Vicat apparatus is approximately ———-grams
(a)
Initial setting time of cement is determined using ———-vicat needle?
(a)
The water content used for the compressive strength test of cement mortar is taken as which of the following?
(P/2)
(P/4) + 3%
(P/5) + 2%
(P/3) + 1%
Specific gravity of cement is determined using ————flask
(a)
In the Le-Chatelier soundness test, the expansion of cement should not exceed ………millimeters
(a)
Moisture absorption of cement during storage should not be more than ———percentage
(a)
