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Provides students with knowledge and ability to properly perform, record, and report the results of basic field and laboratory procedures for aggregates. The course includes hands on testing and practical knowledge application of the AASHTO/ASTM standards such as description, sampling aggregates, reducing samples of aggregate to testing size, etc.
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Upon successful completion of the course, the student will be able to:
Understand concepts of Standard Test Methods for testing of aggregates.
Develop a working knowledge for testing of aggregates.
Perform Standard Test Methods for testing of aggregates.
Test methods and specific learning objectives include:
Sampling of Aggregates
Understand distinction between "maximum" and "nominal maximum" aggregate sizes
Understand sampling requirements
Reducing Samples of Aggregate to Testing Size
Know requirements for reducing fine aggregates
Know reducing requirements for coarse aggregate
Know and perform the procedure for introducing sample to splitter
Know and perform procedure for quartering sample
Know and perform procedure for miniature stockpile samples
Materials Finer than 75-μm (No. 200) Sieve by Washing
Know proper apparatus and materials
Know the sample size requirements for different aggregate sizes
Know and perform procedure for washing
Know and perform calculation for amount of material passing 75-μm sieve by washing
Sieve Analysis of Fine and Coarse Aggregates
Know sieving requirements for mechanical sieve shakers
Know that size of field sample shall be at least four times required test sample
Know how to determine size of test samples for fine and coarse aggregates
Know the procedure for hand sieving and the requirements for sufficiency of hand sieving
Know the calculations, percent passing, etc., to nearest 0.1%
Know the requirements for calculating fineness modulus
Specific Gravity and Absorption of Coarse Aggregate
Know definition of terms for specific gravity
Know requirements and procedure for sample preparation
Know the sequence of operations for the test procedure
Calculate relative density, Density OD, Density SSD and apparent density and absorption
Specific Gravity and Absorption of Fine Aggregate
Know the difference between dry, moist, SSD and free water on aggregates
Know types of pycnometer that can be used
Understand alternative procedure for sample preparation
Calculate bulk specific gravity (relative density), SSD, & (apparent density)
Moisture Content of Aggregate by Drying
Understand scope of test method
Understand detrimental effects of rapidly heating the sample
Know when sample is thoroughly dry
Calculate total evaporable moisture content
Know surface moisture content
Organic Impurities in Fine Aggregates for Concrete
Understand significance and use of test method
Understand results of the test method
Understand method used for standard color solution procedure
Know proper procedure for interpreting results
Effective as of Fall 2017
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