Aggregates Part 2: Production and Quality Control TSYH 3221

Upon successful completion, the student will be able to:

Module 1 - Crushing and Reduction Equipment

• Discuss the purpose of crushing aggregates.
• Discuss the functions and categories of crushers and the stages in the crushing process.
• Identify the five types of crushers and explain the advantages and disadvantages of each.
• Determine the production rates of various crushers and select the appropriate equipment given the job requirements.

Module 2 - Screening Equipment

• Describe the purpose for the screening plant.
• Recommend the screen sizes required for various aggregate products.
• Describe the various types of screen assemblies and screen meshes.
• Describe the washing and sorting of aggregates through the use of screen decks.
• Calculate the capacities of each deck given the initial feed rate and the details of the screening deck.
• Determine the sizes of screen deck assemblies and the required screens for production of given material size requirements.

Module 3 - Washing and Classifying Equipment

• Describe the procedures used to wash and sort fine aggregates and discuss the operation of each equipment type.
• Explain the process by which a sand classifier produces sand to project specifications.
• Compare types of washing and classification equipment and recommend the appropriate equipment for job specifications.

Module 4 - Ancillary Handling Equipment

• Discuss the types and purposes of the various aggregate feeder systems.
• Define the components of conveyor systems and discuss the operation and adjustment of these systems.
• Identify the components of a conveyor scale system and discuss the requirements for scale calibration.
• Identify and explain the use of stakers and surge systems in the transfer and storage of aggregates.

Module 5 - Stockpiling Aggregates

• Explain three methods of stockpiling aggregates.
• Recognize the potential dangers of stockpile segregation and recommend procedures to eliminate these dangers.
• Compute stockpile quantities given the appropriate data.

Module 6 - Development of Aggregate Resources

• State and discuss the steps taken for aggregate source investigation.
• Analyze a gravel prospect report and make recommendations on the method and type of processing equipment required to meet project aggregate specifications.
• State and describe the steps required in source development and the factors to be considered in the phases of establishing an aggregate source.
• Recommend the selection of processing methods for the aggregate based on the characteristics of the deposit.

Module 7 - Quality Control

• Identify and define the role of an inspector and the various inspector/producer relationships.
• State and define the role of the inspector in aggregate production.
• Employ standard sampling procedures as they apply to aggregate production.
• Identify the key areas of the aggregate process plant where sampling should take place.
• Record the daily production data on standard recording forms.
• Describe the general procedures for standard aggregate tests.

Module 8 - Introduction to Economics

• State and define the basic elements and types of contracts relative to aggregates.
• State and define the basic types of estimates.
• Identify the components of a bid price calculation and discuss the relationship of each to the bid.

Effective as of Fall 2003