List and briefly describe the five main types of Portland cement as specified by AASHTO.
What will be an ideal response?
The AASHTO specifications list five main types of Portland Cement:
Type I is suitable for general concrete construction, where no special properties
are required.
Type II is suitable for use in general concrete construction, where the concrete
will be exposed to moderate action of sulphate or where moderate heat of
hydration is required.
Type III is suitable for concrete construction that requires a high concrete strength
in a relatively short time and is sometimes referred to as high early strength
cement.
Type IV is suitable for projects where low heat of hydration is necessary.
Type V is used in concrete construction projects where the concrete will be
exposed to high sulphate action.
You might also like to view...
Antifederalists believe that the sovereignty of the people resided in which branch of the central government?
A. Executive B. Legislative C. Judicial D. Cabinet E. All of these are correct.
Which of the following statements regarding discrimination issues is true?
a. Employers can avoid gender-related issues by hiring only men. b. Employers can minimize workplace discrimination by hiring based on valid, job-related requirements. c. Employers avoid claims of job discrimination by hiring anyone who applies for a job, if a position is available. d. Employers are justified in ignoring claims of sexual harassment against male employees.
Equipotential planes of electrical installations related to manmade bodies of water must be bonded to the electrical grounding system using an insulated, covered, or bare solid copper conductor no smaller than _____.
a. No. 6 AWG b. No. 8 AWG c. No. 12 AWG d. No. 16 AWG
Technician A says brake fluid should be filled to the top of the reservoir to be assured of proper brake pressure when the brakes are applied. Technician B says that the brake fluid level should be filled only to the maximum level line to allow for expansion when the brake fluid gets hot during normal operation. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician