FIRST HOUR EXAMINATION - TAM 324/CEE300
Friday February 16, 2007 Work all problems in spaces provided One page of hand-written notes permitted.
1. (10 points) Nitrogen gas can be used to improve the properties of steel. A sheet of steel
a) Describe briefly the microstructure of softwood and hardwood.
b) Mention which microstructural feature is responsible for the
possibly higher density of hardwood compared to softwood
higher variability of pro
Consider a concrete mixture shown in the table below that has been tested to give a 28-day
compressive strength of 5330 psi.
A blend of 40% fine aggregate and 60% coarse aggregate has a bulk density of 1920 kg/m3. If the
specific gravity of the fine aggregate is 2.60 and that of the coarse aggregate is 2.70,
(a) Compute the volume percent of
CEE 300/TAM 324
Consider the isothermal transformation curves (TTT diagram) for eutectoid steel. Estimate the material phases
and microstructure expected to form due to the following thermal processing:
(a) heated to 800 C for a l
The table below shows the sieve analysis results for an aggregate sample.
a) Calculate the cumulative percent passing for each sieve
b) Plot the results on a properly formatted size distribution curve.
1) Using various sources such as the Compass2G Handout, your textbook, and Google online
sources even Wikipedia, determine typical mean diameters for cement particles, sand particles,
and coarse aggregate particles us
The modulus of elasticity of boron carbide (B4C) having 5% volume porosity is 290 GPa.
(a) Compute the modulus of elasticity for non-porous B4C.
(b) At what volume percent porosity will the modulus of elasticity for B4C
CEE 300/ TAM 324
1) A steel contains 8% cementite and 92% ferrite at room temperature. Estimate the carbon
content of the steel. Is the steel hypoeutectoid or hypereutectoid?
2) A steel contains 18% cementite and 82% ferrite at ro
SECOND HOUR EXAMINATION - TAM 324/CEE300
Wednesday March 7, 2007 Work all problems in spaces provided One page of hand-written notes permitted.
1. (15 points) Assume a single-crystal BCC material. (a)(5pts) Sketch the BCC crystal unit c
Use an internet search to find information about design of reinforced concrete structures.
Answer the following questions:
a) Which factors affect the location of rebar in Reinforced Concrete structures?
b) How much co