Review 2

Question 1

mass of a unit volume of a material

Answer 1

density

Question 2

this is the weight per unit volume of material

Answer 2

specific weight / unit weight

Question 3

measure of the void (hollow space) in a material

Answer 3

porosity

Question 4

this is the content of water contained in a material.

Answer 4

Moisture

Question 5

this pertains to the ability of material to carry out heat

Answer 5

Thermal Conductivity

Question 6

this pertains to the expansion or contraction of the material as the temperature changes.

Answer 6

Thermal Expansion

Question 7

it is the resistance of a fluid which is being deformed by either shear or tensile stress.

Answer 7

Viscosity

Question 8

A measure of a material’s ability to resist a variety of mechanical forces.

Answer 8

Mechanical Properties

Question 9

this pertains to the behavior of a material, specifically solid objects, which experiences stresses or strains.

Answer 9

strength

Question 10

it is the maximum stress limit of a material wherein it cannot return to its original shape.

Answer 10

yield strength

Question 11

this is the maximum stress that the material can take before breaking; also known as tensile strength.

Answer 11

ultimate strength

Question 12

this is the ability of the material to deform when external force is applied and to return to its original state when the stress is eliminated.

Answer 12

elasticity

Question 13

this is a proportional constant between stress and strain. It is defines stiffness and rigidity of a material, governs deflections and influences buckling behavior.

Answer 13

Modulus of Elasticity

Question 14

this is the ability of the material to experience large amount of deformations without breaking before failure.

Answer 14

ductility

Question 15

this is created when forces pull on a member and tend to increase its length.

Answer 15

tensile stress

Question 16

this is a push (compress) on a member and tend to shorten it.

Answer 16

compressive stress

Question 17

produce forces that work in opposite directions parallel with the plane of the force, causing adjacent parts of a material to slide past one another.

Answer 17

shear stress

Question 18

the rate the water flows through a material.

Answer 18

Permeability

Question 19

this is a measure of the ability of a material to resist indentation or surface scratching. It is the result of several properties of a material, such as elasticity, ductility, brittleness and toughness.

Answer 19

Hardness

Question 20

this is the ability of a material to resist a very rapidly applied load, such as the strike of a hammer. It is an indication of the toughness of a material. A material with high impact strength will absorb the energy of impact without fracturing. It is affected by strength and ductility.

Answer 20

impact strength

Question 21

this is the resistance if a material to a cyclic load, one that varies in direction and/or magnitude.

Answer 21

Fatigue strength

Question 22

are those that are related to the material’s response to heat.

Answer 22

thermal properties

Question 23

is that branch of physics that deals with the generation, transmission and control of sound waves.

Answer 23

acoustic properties

Question 24

Potential reaction with environment

Answer 24

chemical properties

Question 25

these are aggregates from construction or demolition waste.

Answer 25

recycled aggregates

Question 26

these are aggregates that pass a 4.75 mm sieve.

Answer 26

fine aggregates

Question 27

these are aggregates that are retained on a 4.75 mm sieve.

Answer 27

coarse aggregates

Question 28

materials which were formed from clay, silt, sand, and gravel left by flowing streams like river.

Answer 28

Unconsolidated Rocks

Question 29

materials like limestone or volcanic rock

Answer 29

Solid Rock

Question 30

materials from actual construction (e.g. demolition works)

Answer 30

Recycled Materials

Question 31

is the process undergone by a material that has series of sequential degrees.

Answer 31

gradation

Question 32

This is used to determine the degree of uniformity of the aggregate gradation.

Answer 32

fineness modulus

Question 33

pertains to the weight of aggregate required to fill a specific amount of volume.

Answer 33

Bulk Unit Weight

Question 34

is the weight of the material divided by the weight of an equal volume of water.

Answer 34

specific gravity

Question 35

determines how well it will contain into a dense formation and determines the movement of it in the mixture.

Answer 35

particle shape and surface texture

Question 36

is the maximum amount that water aggregate can absorb

Answer 36

absorption capacity

Question 37

is the amount of water on the surface of the aggregate particle.

Answer 37

surface moisture

Question 38

SSD

Answer 38

saturated surface dry