first unit quiz

What could be the possible answer among the following for compressive strength of high strength concrete

• 10MPa

• 20MPa

• 30MPa

• 40MPa

2.the fire resistance of a structural member is depenent on following factor

• geometry

• materials used in construction

• load intensity and characteristics of the exposing fire

• all of above

High-Performance Concrete is ____________ as compared to Normal Strength Concrete

• Less brittle

• Brittle

• more Brittle

• Highly ductile

Which of the following is not a property of high performance concrete ?

• High early strength

• High abrasion resistant

• High modulus of elasticity

• High permeability

Out of the constituents of cement like tricalcium silicate, dicalcium silicate, tricalcium aluminate, the first to set and harden is __________

• tricalcium silicate

• dicalcium silicate

• tricalcium aluminate

• none of these

____________ mm nominal maximum size aggregates gives optimum strength.

what are the properties of self compacting concrete?

• filling ability

• passing ability

• segregation resistance

• all the above

Self–compacting concrete (SCC) is characterized by:

• High power component

• High water – powder ratio

• Cementitious materials up to 30%

• Rough surface finish

choose the Test conducted on self compacting concrete

• slump flow test

• slump cone test

• compaction factor test

• flow table test

What is concrete?

• A mixture of homogenous materials

• A mixture of cement and hydrogen sulphide

• A mixture of cement, water,and aggregates

• A mixture of material and hydrogen