Effect of Aggregate and Aggregate Cement Ratio

Q. Which type of aggregates give maximum strength to concrete ?

1. Flaky aggregates
2. Angular aggregates
3. Rounded aggregates
4. Mixed aggregates

Q. Grading of aggregates in a concrete mix is mainly essential to achieve:

1. Adequate workability
2. Higher density
3. Reduction in voids
4. Better durability

Q. For ensuring quality of concrete, use:

1. single sized aggregates
2. two sized aggregates
3. graded aggregates
4. coarse aggregates

Q. The risk of segregation is more for :

1. wetter mix
2. larger proportion of maximum size aggregate
3. coarser grading
4. wetter mix and larger proportion if maximum size aggregate and coarse grading

Q. For R.C.C. construction, the maximum size of coarse aggregate is limited to :

1. $10mm$
2. $15mm$
3. $20mm$
4. $25mm$