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Sieve Analysis

# Sieve Analysis - 6 Weigh each sieve and report the mass...

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ASTM C 136-01 (AASHTO No. T 27) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates Equipment Balance Sieves Mechanical sieve shaker Oven Sampling The minimum test sample for fine aggregates is 300 grams. For coarse aggregates, the test sample size will be determined by the nominal maximum size (the smallest sieve opening through which the entire aggregate sample is permitted to pass). For mixtures of fine and coarse aggregate, the coarse recommendations will be used. Procedures 1. Wash the aggregate to remove deleterious material and dust. 2. Dry sample at a temperature range of 105-115 o C until there is no mass change in the aggregate. 3. Choose appropriate sieves needed for testing and stack them in descending order. a. 1”, ¾”, ½”, 3/8”, No. 4, 8, 16, 30, 50, 100, 200, pan 4. If needed, split the sample into multiple quantities and sieve the material. 5. Remove the sieves from the mechanical shaker.

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Unformatted text preview: 6. Weigh each sieve, and report the mass retained on each sieve in a cumulative manner. 7. Calculate the cumulative percent retained on each sieve. 8. Calculate the percent passing each sieve. 9. Calculate the fineness modulus. Calculations • Percent Retained T Mass Mass tained 200 200 Re % = • Percent Passing T Mass Mass Pass 200 200 %-= • Fineness Modulus 100 ... % % % % % % % % % 2 1 1 4 3 8 3 4 8 16 30 50 100 + + + + + + + + + + + + + + + + + = FM Significance and Use • The grading of aggregates is used to determine if the particle size distribution of the aggregates is in compliance with the project specifications. • Gradation is important in determining porosity and packing Report • Total % passing each sieve to the nearest whole number • Total % retained on each sieve to the nearest whole number • Fineness Modulus to the nearest 0.01 Precision •...
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• Spring '09
• TIMM
• Construction aggregate, Particle size distribution, AASHTO, mechanical sieve shaker, 300 grams, smallest sieve opening

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Sieve Analysis - 6 Weigh each sieve and report the mass...

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