QUESTIONS AND CORRECT ANSWERS
What type of cement is used for construction of a pier in expose of high sulfate attack - CORRECT
ANSWER Type V
What type of cement is used for construction in cold weather - CORRECT ANSWER Type III
What type of cement is used for construction in a warm climate region - CORRECT
ANSWER Type II
What type of cement is used for construction of a structure without any specific exposure condition -
CORRECT ANSWER Type I
What type of cement is used for construction of a a foundation in a soil with severe surface exposure -
CORRECT ANSWER Type V
What type of cement is used for construction where high early strength is required, but not necessarily
high ultimate strength - CORRECT ANSWER Type III
What is the application of a retarder admixture? - CORRECT ANSWER More time is expected
to be needed for finishing concrete
What is the application of a air entrainer admixture? - CORRECT ANSWER The structure is
subject to freezing
What is the application of a water reducer admixture? - CORRECT ANSWER Increase the
slump with the same water content
What is the application of a accelerator admixture? - CORRECT ANSWER High early strength
concrete is required but not necessarily high ultimate strength
, What are the two major concerns in choosing the cement type for piers of a marine structure -
CORRECT ANSWER Exposure to seawater and corrosion
Amount of heat released in the large element and massive concrete pouring
What two cement types are most suitable for large piers with medium sulphate exposure? -
CORRECT ANSWER Type I and II
In a cold climate if you can only pick one admixture to use which one would you select to improve
the quality of concrete cast procedure? - CORRECT ANSWER Accelerator
In the Absolute Volume Method for concrete mix, choose two factors that are adjusted based on the
aggregate moisture conditions - CORRECT ANSWER 1. The actual weight of aggregates
2. the water content
What is the meaning of air dry? - CORRECT ANSWER Purse connected to the surface are
partially full of moisture but the surface is dry
What is the meaning of saturated surface dry (SSD)? - CORRECT ANSWER Pores connected
to the surface are filled with water but the surface is dry
What is the meaning of wet or moist? - CORRECT ANSWER Pores connected to the surface
are filled with water and there is excess moisture on the surface
True or False: high permeability is recommended for the concrete exposed to harsh and corrosive
environments - CORRECT ANSWER False
True or false: high temperature is always beneficial in concrete curing - CORRECT
ANSWER False
True or false: in Saturated Surface Dry (SSD) condition, the aggregates can absorb water to fill the
voids - CORRECT ANSWER False