Concrete Materials and Construction
This assignment may be performed in teams of no more than 3 persons, or individually.
February 9, 2012
Due: February 21, 2012
1. Sketch the location and orientation of cracks for the followin
Quiz #14, March 29, 2012
You may use a combination of words and sketches to clearly answer these questions.
1. Why is it that the intentional inclusion of billions of microscopically sized-air bubbles in a
cubic yard or cubic meter of
Quiz #13, March 27, 2012
1. What is the fundamental cause of damage when moist concrete freezes?
Water expands when it freezes (about 10%). This causes internal pressure
that cracks the concrete from the inside-out.
2. The primary mea
Quiz #12, March 15, 2012
You intend to use the electrical potential test to evaluate active corrosion.
What is this test?
Measures the voltage of the various combinations of active micro- and macrocorrosion cells in the concrete.
Quiz #11, March 15, 2012
You have been retained to evaluate Cornells Stadium parking garage to determine its
vulnerability to corrosion of reinforcing steel. The owners representative asks you to briefly
describe the test and inspecti
Quiz #10, March 13, 2012
You and a friend are walking to campus and as you approach the loading-dock entrance to
Hollister Hall you both see what is shown in Photo#1. Your friend, who is highly intelligent but
has not had an engineeri
Quiz #8, February 28, 2012
Please respond to the questions in the context of recent course topics
1. What is shown in Image 1?
These are plastic shrinkage cracks
2. What is the relevance of Image 2?
We discussed moisture content of sa
Quiz #6, February 26, 2012
Assume concrete with a paste volume fraction o f 33% and an aggregate volume fraction of 67%.
Assume also that the elastic modulus of the paste = 1,500,000 psi and the elastic modulus of the
aggregate = 12,0
Quiz #4, February 9, 2012
A forensic engineering story problem.
A concrete testing laboratory reports that all of the cylinders that were made at a particular
jobsite on December 30, and subsequently tested in the lab 28 days later on
Quiz #3, February 7, 2012
1. (5 points) Briefly explain what is mean by the phrase: The concrete contractor is in a
race with the chemical reaction between water and cement.
Essential point: The cement-water reaction proceeds at a rat
Quiz #2, February 2, 2012
From the perspective of an educated engineer, and in the specific context of this course, what is
wrong with the following internet exchange?
people found it
Please write your answer in the spa
CEE 6750 Concrete Materials and Construction
Quiz #21, April 19, 2012
1. A cement producer is anticipating the manufacture of 1000 Tons or Tonnes or Toneladas of Portland
cement. The rotary kiln is fired with coal. The coal is Pennsylvania Anthracit