SEC

Question 1

It is a kind of test that determines the consistency of concrete

Answer 1

Slump Test

Question 2

This should be done during the first seven days in order that the expected development of strength will be obtained and the occurrence of plastic cracks will be prevented or minimized.

It is a construction operation that concrete should be protected so that moisture is not lost during the early stages of hardening, and it should be kept at a temperature that will promote hydration and also protect against injury from subsequent construction activities.

Answer 2

Curing

Question 3

A general term relating to the character of a mix with respect to its fluidity

Answer 3

Consistency

Question 4

Material other than the basic ingredient of concrete mix immediately before or during mixing to modify one or more of the specific properties of concrete in the fresh hardened states

Answer 4

Admixture

Question 5

It is an impervious membrane applied to concrete pavement before its initial setting that prevents rapid evaporation of water from the mix

Answer 5

Curing Compound

Question 6

A mixture of cementitious materials and water, with or without aggregate, proportioned to produce a creamy consistency

Answer 6

Grout

Question 7

It refers to how easily freshly mixed concrete can be placed, consolidated and finished with minimal loss of homogeneity

Answer 7

Workability

Question 8

Occurs as concrete hardens, being greater in wet mixes. Curing helps to limit effects and therefore concrete in the actual structure should be thoroughly and continuously moistened for some considerable period after placing.

Answer 8

Shrinkage

Question 9

Ratio of the lateral strain to the longitudinal strain.

Answer 9

Poisson’s Ratio

Question 10

The constant of proportionality in the linear portion of the stress-strain diagram

Answer 10

Mod. of Elasticity (Young’s Modulus)

Question 11

The area under the entire stress-strain curve

Answer 11

Toughness Modulus

Question 12

The limit beyond which the material will no longer go back to its original shape when the load is removed

Greatest stress that can be applied to an elastic body without causing permanent deformation.

Answer 12

Elastic Limit

Question 13

Stress point where a material will have appreciable deformation when small amount of stress is experienced

Answer 13

Yielding

Question 14

The point in the stress-strain test at which the material will have an appreciable elongation without any increase of load.

Answer 14

Yield Point

Question 15

the ability of a material to absorb energy in the ELASTIC range (without permanent deformation)

Answer 15

Resilience

Question 16

the ability of a material to absorb energy in the PLASTIC range

Answer 16

Toughness

Question 17

the ability of a material to deform in the ELASTIC range without breaking

Answer 17

Elasticity

Question 18

the ability of a material to deform in the PLASTIC range without breaking

Answer 18

Plasticity

Question 19

When a material has to support a load for a long period of time, what causes it to continue to deform until a sudden fracture occurs?

Answer 19

Creep

Question 20

A measurement of the resistance of a material to deformation, indentation, or scratching, and can be used to verify the ultimate strength of structural steels after heat treatment

Answer 20

Hardness

Question 21

Ability of a material to undergo plastic deformation without failure under high tensile stresses

Answer 21

Ductility

Question 22

Reciprocal of stiffness

Answer 22

Flexibility (of a struc)

Question 23

Reciprocal of deflection

Answer 23

Rigidity

Question 24

the point through which the resultant of the resistance to the applied lateral force acts

Answer 24

Center of Rigidity

Question 25

the point on a structure where the resultant vertical load acts

Answer 25

Center of Gravity

Question 26

The point on a structure through which the applied seismic force acts

Answer 26

Center of Mass

Question 27

Develops when the center of mass and center of rigidity of a structure does not coincide

Answer 27

Torsional Shear Stress

Question 28

the distance between the center of rigidity and the center of gravity

Answer 28

Eccentricity

Question 29

the properties of the material are the same for every direction

Answer 29

Isotropic

Question 30

the properties of the material are different for different directions

Answer 30

Orthotropic

Question 31

Sudden drop of shear strength

Answer 31

Liquefaction

Question 32

A building which has a floor which is less than 70% as stiff as the floor immediately above it, or less than 80% as stiff as the average stiffness of the three floors above it

Answer 32

Soft Storey

Question 33

Refers to the lateral displacement of one level relative to the other level above or below

Answer 33

Storey Drift

Question 34

What can be measured by a seismometer?

Answer 34

Ground Displacement

Question 35

If two springs with stiffness k1 and k2 are arranged in parallel, which of the following gives the combined stiffness k?

Answer 35

k = k1 + k2

Question 36

Occurs when a building period coincides with the earthquake period

Answer 36

Resonance

Question 37

Besides the epicentre, it describes the location of the earthquake

Answer 37

Focal Depth

Question 38

Measured by the Richter scale

Answer 38

Magnitude of Earthquake