問題一覧
1
3 types of stress and their meaning
done.
2
is a broad category of coarse to medium-grained particulate material used in construction including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. _____ are the most mined materials in the world.
aggregate
3
is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens(cures)over time.
concrete
4
To obtain accurate measures of fundamental properties or physical constants – it requires accumulation of an orderly and reliable store of information – it needs precision, care and patience
scientific measurement
5
To develop new or better information on known materials or to develop new materials – it obtains new understanding of known materials – it discovers the properties of new materials – it develops meaningful standards of quality or test procedures – it requires skill, ingenuity and resourcefulness
materials research and development work
6
8 tests carried out on fresh and hardened concrete
done.
7
to supply routine information on the quality of a product. - it checks the acceptability of materials under purchase – it takes control of production or manufacture – it requires accuracy but does not need high degree of refine
commercial or control testing
8
characteristics of a material that relate to its behavior in chemical reactions particularly in connection with corrosion and alloying.
chemical properties
9
is a standard setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States.
AASHTO
10
5 types of construction materials
done.
11
it refers to measurement of the characteristics and behavior of materials to be used in specifying the suitability of materials to various applications. (e.g. construction). Examination of material properties with respect to design and use of end pro duct.
material testing
12
is the unit deformation to which a material may be subjected. a deformation caused by the application of an external force.
strain
13
a finely milled mineral powder, usually gray in color. Mixed with water, ____ serves as an adhesive to bind sand, gravel, and hard rock in concrete.
cement
14
7 tests carried out on steel reinforcement
done.
15
is a black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation. It is used for rd surfacing and roofing.
bitumen
16
4 classification of materials.
done.
17
materials that exhibit electrical and thermal conductivity plays an important role in industrial operation.
metallic
18
includes wood, stone, brick, cement, concrete, resins (plastic), rubber, leather, ceramics, etc.
non-metallic
19
4 tests carried out on cement
done.
20
is a private organization that establishes specifications for materials and methods of construction accepted as standards throughout the United States.
ASTM
21
describe the behavior of materials under the application of forces.
mechanical properties
22
includes all other metals and their combinations.
non-ferrous
23
4 categories for material testing
done.
24
7 tests carried out on bitumen
done.
25
3 properties of engineering materials
done.
26
includes steel, cast iron, wrought iron, malleable cast iron.
ferrous
27
the externally distributed force which tend to resist deformation.
stress
28
it is the outcome is uncertain and new insights are to be gained.
experiments
29
5 tests carried out on aggregates
done.
30
an item, materials or supply consumed or used in a construction project and incorporated in the constructed building or structure.
construction materials
31
are provided in combination with plain cement concrete to make it reinforced concrete.
steel bar
32
those distinguishing qualities or characteristics that are used to describe a substance in the absence of external forces.
physical properties
33
indicate a more or less established procedure with limits of the results generally defined.
tests