STUPIDSID
1 (a)
Enlist the types of cements and explain properties of PPC.
7 M
1 (b)
Define standard consistency of cement and write the laboratory procedure for
determining the same.
7 M
2 (a)
Define initial setting time and final setting time of cement and explain the
laboratory test for the same. Mention the IS limits of IST and FST of OPC.
7 M
2 (b)
Give difference between Rapid hardening cement and Quick setting cement.
7 M
2 (c)
Explain heat of hydration and it's importance in setting.
7 M
3 (a)
Define aggregate and classify them according to (i) size (ii) Shape (iii) source
of origin and (iv) Weight criteria.
7 M
3 (b)
Define fineness modulus of aggregate and calculate it's value for the following test result. Explain it's utility.
| IS sieve | 40 | 20 | 10 | 4.75 | 2.36 | 1.18 | 0.60 | 0.30 | 0.15 |
| % wt. Retained | 5 | 30 | 50 | 60 | 80 | 96 | 99 | 100 | 100 |
| % Passing | 95 | 70 | 50 | 40 | 20 | 04 | 01 | 00 | 00 |
7 M
3 (c)
Describe effect of impurities in water on properties of concrete.
7 M
3 (d)
Enlist the purposes of using admixture in concrete.
7 M
4 (a)
Define workability of concrete and explain any one test to measure the
workability of concrete.
7 M
4 (b)
Explain segregation and bleeding phenomenon. Also write the causes of
Segregation.
7 M
4 (c)
Define the "Mix design" and design concrete mix M20 using following data
and IS : 10262 procedure.
1. Max. size of aggregate = 20 mm
2. Degree of workability = 0.80 CF
3. Degree of quality control = good
4. Type of exposure = mild
5. w/c/ = 0.47
6. Cement used = OPC 53 grade
7. Sp. Gravity of cement =3.15, Coarse aggregate = 2.70, Fine aggregate =2.65
8. Water absorption of Coarse aggregate = 0.5 %, Fine aggregate = 1.0 %
9. Free moisture in C. A. = 0.0 % , F. A. = 0.0 %
10. Bulk density of Cement = 1440, C. A. = 1650, F.A. = 1800 kg/m3
1. Max. size of aggregate = 20 mm
2. Degree of workability = 0.80 CF
3. Degree of quality control = good
4. Type of exposure = mild
5. w/c/ = 0.47
6. Cement used = OPC 53 grade
7. Sp. Gravity of cement =3.15, Coarse aggregate = 2.70, Fine aggregate =2.65
8. Water absorption of Coarse aggregate = 0.5 %, Fine aggregate = 1.0 %
9. Free moisture in C. A. = 0.0 % , F. A. = 0.0 %
10. Bulk density of Cement = 1440, C. A. = 1650, F.A. = 1800 kg/m3
7 M
5 (a)
Write note on NDT and it's utility
7 M
5 (b)
Write note on (i) Hot weather concreting (ii) Recycled aggregate concrete.
7 M
5 (c)
State causes and precautions for distress in structures.
7 M
5 (d)
Explain with sketch crack repair by injection grouting.
7 M
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