Building Materials, Third Edition
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- If p is the standard consistency of cement, the amount of water used in conducting the
initial setting time test on cement is
(a) 0.65 p (b) 0.85 p (c) 0.6 p (d) 0.8 p
- Increase in fineness of cement
(a) reduces the rate of strength development and leads to higher shrinkage.
(b) increases the rate of strength development and reduces the rate of deterioration.
(c) decreases the rate of strength development and increases the rate of diterioration.
(d) increases the rate of strength development and leads to higher shrinkage.
- Consider the following statements:
- Tests on cement paste to determine initial and final setting times are done at normal
consistency condition.
- Low heat cement has a high percentage of tri-calcium aluminate.
- High early strength Portland cement contains a large percentage of tricalcium
silicate and lower percentage of dicalcium silicate.
which of these statements are correct?
(a) 1 and 2 (b) 1 and 3 (c) 2 and 3 (d) l, 2 and 3
- Match List-I with List-II and select the correct answer using the codes given bellow the lists:
List-I List-II
(Laboratory tests)(Property)
A. Vicat apparatus 1. Soundness of cement
B. Le-Chatelier apparatus 2. Initial setting time of cement
C. Slump test 3. Workability of cement concrete
D. Fineness modulus 4. Relative size of aggregates
Codes:
(a)AB CD (b)AB CD
1234 1432
(c)AB CD (d)AB CD
3421 2134
- Match List-I (Property of cement) with List-II (Testing apparatus) and select the correct
answer using the codes given below the lists:
List-I List-II
(Property of Cement)(Apparatus)
A. Specific gravity 1. Blain’s appratus
B. Setting time 2. Le-Chatelier’s flask
C. Soundness 3. Compressometer
D. Fineness 4. Autoclave
5. Vicat’s apparatus
Codes:
(a)AB CD (b)AB CD
3512 2514
(c)AB CD (d)AB CD
2541 5341
- Before testing setting time of cement one should test cement for
(a) soundness (b) strength (c) fineness (d) consistency
