CE Materials Midterm Exam

Construction material structural matrix types include:

• cyclic

• amorphous

• external

• substrate

Masonry walls retain their structure for temperature in Celsius up to:

• 400

• 600

• 800

• 1000

Compared to 80 ksi steel, the yield strength for 70% glass-titanium alloy is:

• 0.5 times higher

• 2 times higher

• 3 times higher

• 5 times higher

The material group that is ductile but susceptible to fire is:

• mineral-based materials

• metal-based materials

• organic materials

• inorganic materials

Plastic stress-strain for steel occurs in:

• Zone I

• Zone II

• Zone III

• Zone IV

Scratch resistance of minerals follows the hardness scale of:

• Brinell

• Moh

• Rockwell

• Vickers

The thermal entity involving thermal stress cracking of concrete is:

• specific heat capacity

• thermal conductivity

• thermal expansivity

• enthalpy of formation

Moisture absorption factors include:

• volumetric water content

• gravimetric water content

• absorption weight

• all the above

Example failure modes are:

• tension parallel to grain

• nail pull out

• exposed rusting rebar

• all of the above

The bond with shared electron pairs in a joint orbital is:

• metallic

• hydrogen

• ionic

• covalent