Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Tex-411-A, Soundness of Aggregate Using Sodium Sulfate or Magnesium
Sulfate
Overview
Effective dates: August 1999 – October 2004.
This test measures aggregate resistance to disintegration.
Apparatus
The following apparatus is required:
♦
Set of standard U.S. sieves meeting the requirements of Test Method "Tex-907-K,
Verifying the Accuracy of Wire Cloth Sieves" in the following sizes:
•
300 µm (No. 50)
•
600 µm (No. 30)
•
1.18 mm (No. 16)
•
2.36 mm (No. 8)
•
4.00 mm (No. 5)
•
4.75 mm (No. 4)
•
6.3 mm (1/4 in.)
•
8.0 mm (5/16 in.)
•
9.5 mm (3/8 in.)
•
12.5 mm (1/2 in.)
•
16.0 mm (5/8 in.)
•
19.0 mm (3/4 in.)
•
25.0 mm (1 in.)
•
31.5 mm (1-1/4 in.)
•
37.5 mm (1-1/2 in.)
•
50.0 mm (2 in.)
•
63.0 mm (2-1/2 in.)
•
larger sizes by 12.5 mm (1/2 in.) spread.
♦
Tanks, with a volume greater than five times the solid volume of the immersed samples
in their containers
♦
Perforated containers, for immersion of samples, such as baskets of non-corrosive wire
mesh, or sieves with suitable openings to allow free access of solution to the samples
♦
Solution temperature control device
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
♦
Balance, accurate and readable to within 0.1 g
♦
Drying oven, maintained at 110 ± 5 °C (230 ± 9 °F) with an evaporation rate of at least
25 g/h for 4 h, while the doors of the oven are kept closed.
•
Determine this rate by the loss of water from 1-L Griffin low-form beakers, each
initially containing 500 g of water and at a temperature of 21 ± 2 °C (70 ± 3 °F),
placed in each corner and the center of each shelf of the oven.
•
The oven must meet the evaporation requirement in all test locations when empty
except for the beakers of water.
♦
Hydrometer, conforming to the requirements of ASTM E 100
♦
Water from an approved drinking water source
♦
Barium chloride (0.2 molar).
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Normalized Gradation and Standardization
Normalized gradation and standardized maximum aggregate sizes are used in this test
method. This reduces the impact of aggregate size and gradation on all the soundness test
results.
The median of the specification gradation shall be normalized for the aggregate products as
shown in the 'Normalized Gradations' table, and should be used for this test.
Application
Concrete Fine Aggregate
Concrete Coarse Aggregate
Surface Treatment
HMAC
Micro-Surface
Rock Riprap
Rock Riprap Bedding
Base Material
Normalized Gradations
Passing Sieve
Retained Sieve
4.75 mm (No. 4)
2.36 mm (No. 8)
2.36 mm (No. 8)
1.18 mm (No. 16)
1.18 mm (No. 16)
600 µm (No. 30)
600 µm (No. 30)
300 µm (No. 50)
300 µm (No. 50)
19.0 mm (3/4 in.)
9.5 mm (3/8 in.)
9.5 mm (3/8 in.)
4.75 mm (No. 4)
12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
9.5 mm (3/8 in.)
4.75 mm (No. 4)
12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
9.5 mm (3/8 in.)
4.75 mm (No. 4)
4.75 mm (No. 4)
2.36 mm (No. 8)
4.75 mm (No. 4)
2.36 mm (No. 8)
2.36 mm (No. 8)
1.18 mm (No. 16)
1.18 mm (No. 16)
600 µm (No. 30)
600 µm (No. 30)
300 µm (No. 50)
300 µm (No. 50)
63.0 mm (2-1/2 in.)
37.5 mm (1-1/2 in.)
37.5 mm (1-1/2 in.)
19.0 mm (3/4 in.)
63.0 mm (2-1/2 in.)
37.5 mm (1-1/2in.)
37.5 mm (1-1/2 in.)
19.0 mm (3/4 in.)
19.0 mm (3/4 in.)
9.5 mm (3/8 in.)
9.5 mm (3/8 in.)
4.75 mm (No. 4)
37.5 mm (1-1/2 in.)
19.0 mm (3/4 in.)
19.0 mm (3/4 in.)
9.5 mm (3/8 in.)
9.5 mm (3/8 in.)
4.75 mm (No. 4)
4.75 mm (No. 4)
2.36 mm (No. 8)
2.36 mm (No. 8)
1.18 mm (No. 16)
1.18 mm (No. 16)
600 µm (No. 30)
600 µm (No. 30)
300 µm (No. 50)
300 µm (No. 50)
Normalized Gradation
10%
23%
22%
22%
23%
66%
34%
28%
72%
13%
50%
37%
17%
23%
20%
14%
26%
70%
30%
24%
39%
24%
13%
26%
13%
15%
7%
8%
6%
5%
20%
Preparing Saturated Solution
The following table lists the steps necessary to prepare a saturated solution.
Preparing a Saturated Solution
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Chapter 4, Concrete
Step
1
2
3
4
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Action
♦ Dissolve a USP, or technical grade salt, in water at a temperature of 25 °C (75 °F) minimum.
♦ Add sufficient salt of either the anhydrous (MgSO4 or Na2SO4) or the crystalline hydrate (MgSO4
+ 7H2O or Na2SO4 + 10H2O) form, to ensure not only saturation, but also the presence of excess
crystals when the solution is ready for use in the tests (see 'Minimum Mass of Salt Per Liter of
Water' table).
♦ Thoroughly stir the mixture during the addition of the salt and allow the solution to cool to 20 - 24
°C (68 - 75 °F).
♦ Allow the solution to remain undisturbed for at least 48 hours before use.
NOTE: To reduce evaporation and prevent contamination, keep the solution covered at all times when
access is not needed.
♦ Prior to each use break up any salt cake in the tank, and stir.
♦ Determine and document the temperature and specific gravity of the solution at least once a week.
♦ Test reproducibility will be affected if these factors are allowed to vary from test requirements.
♦ When obtaining a specific gravity reading, obtain it prior to stirring the solution.
♦ When tested, the specific gravity should not be less than 1.151 nor more than 1.174 for the sodium
sulfate solution, or not less than 1.295 nor more than 1.308 for the magnesium sulfate solution.
Discard a discolored solution, or filter it and check for specific gravity.
The following table indicates the minimum mass of salt per liter of water.
Salt
Anhydrous
Crystalline
Minimum Mass of Salt Per Liter of Water
MgSO4
350 g
1400 g
Na2SO4
215 g
700 g
NOTE 1: Some aggregates containing carbonates of calcium or magnesium are attacked
chemically by fresh sulfate solution, resulting in erroneously high measured losses. If
this condition is encountered or suspected, repeat the test using a solution that has been
used previously to test the same type of carbonate rock, provided that the solution meets
the requirements for temperature and specific gravity.
NOTE 2: When the sample does not contain smaller particle sizes, crush the larger particles,
as spelled out in the 'Normalized Gradations' table.
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Preparing Concrete Fine Aggregate
Concrete fine aggregate consists of all concrete aggregate passing a 4.75 mm (No. 4) sieve,
except for mineral filler.
The table below lists the steps required to prepare concrete fine aggregate.
Step
1
2
3
Preparing Concrete Fine Aggregate
Action
Reduce the sample to test size shown in Test Method "Tex-401-A, Sieve Analysis of Fine and
Coarse Aggregate."
Thoroughly wash the fine aggregate sample over a 300 µm (No. 50) sieve, dry to constant mass
in oven.
Hand sieve the sample to refusal according to Test Method "Tex-401-A, Sieve Analysis of Fine
and Coarse Aggregate," into the size fractions shown in the 'Aggregate Size Fractions' table.
NOTE 1: Do not test any concrete fine aggregate passing the 300 µm (No. 50) sieve. It is
assumed to have 0% loss and is accounted for in the normalized gradation as 23% of the
sample.
NOTE 2: Do not use fine aggregate sticking in the meshes of the sieves in preparing samples.
Place each size fraction in separate containers for the test.
The following table indicates the size fractions of aggregate after sieving (see Step 3 of
'Preparing Concrete Fine Aggregate' ).
Sieve Passing
4.75 mm (No. 4)
2.36 mm (No. 8)
1.18 mm (No. 16)
600 µm (No. 30)
Manual of Testing Procedures
Aggregate Size Fractions
Sieve Retained
2.36 mm (No. 8)
1.18 mm (No. 16)
600 µm (No. 30)
300 µm (No. 50)
5
Mass, grams
100 g
100 g
100 g
100 g
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Preparing Coarse Aggregate for Concrete, Surface Treatment and HMAC Applications
The table below lists the steps necessary to prepare coarse aggregate for concrete, surface
treatment, and HMAC applications.
Step
1
2
3
4
5
Preparing Coarse Aggregate for Concrete, Surface Treatment and HMAC Applications
Action
Reduce the sample to test size shown in Test Method "Tex-401-A, Sieve Analysis of Fine and
Coarse Aggregate."
♦ Make a rough separation of the sample into designated sizes by hand or mechanical sieving.
• If mechanical sieving is used, limit sieving to the minimum required to separate the sample
to avoid abrasion of softer particles.
♦ Thoroughly wash the sample of coarse aggregate and then dry to a constant mass in the oven.
Hand sieve the sample to refusal according to Test Method "Tex-401-A, Sieve Analysis of Fine
and Coarse Aggregate," into the size fractions listed in the 'Sample Size Fractions' table.
♦ Concrete - Concrete coarse aggregate consists of material from which the sizes finer than the
4.75 (No. 4) sieve have been removed.
♦ Bituminous Coarse Aggregate – Coarse aggregate for HMAC and surface treatment
applications consists of material from which sizes finer than 2.36 mm (No. 8) have been
removed. (See NOTE 3).
Weigh out quantities of the different sizes within the tolerances shown in the 'Sample Size
Fractions' table. Where the test portions consist of two sizes, combine them to the designated total
mass.
Record the masses of the test samples and their fractional components.
The table below lists the sample size fractions for coarse aggregate for concrete, surface
treatment, and HMAC applications.
Item
Concrete Aggregate
Concrete Aggregate
Concrete Aggregate
♦ consisting of:
Sample Size Fractions
Sieve Passing
Sieve Retained
19.0 mm (3/4 in.)
12.5 mm (1/2 in.)
12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
9.5 mm (3/8 in.)
4.75 mm (No.4)
♦ 9.5 mm (3/8 in.)
♦ 6.3 mm (1/4 in.)
♦ 6.3 mm (1/4 in.)
♦ 4.75 mm (No. 4)
HMAC
HMAC
♦ consisting of:
12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
♦ 9.5 mm (3/8 in.)
♦ 6.3 mm (1/4 in.)
9.5 mm (3/8 in.)
4.75 mm (No.4)
♦ 6.3 mm (1/4 in.)
♦ 4.75 mm (No. 4)
HMAC
Surface Treatment
Surface Treatment
♦ consisting of:
4.75 mm (No. 4)
12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
♦ 9.5 mm (3/8 in.)
♦ 6.3 mm (1/4 in.)
2.36 mm (No. 8)
9.5 mm (3/8 in.)
4.75 mm (No. 4)
♦ 6.3 mm (1/4 in.)
♦ 4.75 mm (No. 4)
Weight, g
670 ± 10
330 ± 5
300 ± 5
♦ 180 ± 5
♦ 120 ± 5
1000 ± 10
300 ± 5
♦ 180 ± 5
♦ 120 ± 5
100 ± 5
1000 ± 10
300 ± 5
♦ 180 ± 5
♦ 120 ± 5
NOTE 3: When HMAC Type D coarse aggregate does not contain sufficient + 9.5 mm (3/8
in.) material, when calculating use same loss as passing 9.5 mm (3/8 in.) and retained
on 4.75 mm (No. 4) sieve.
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Preparing Aggregate for Other Applications
The following table lists the steps necessary to prepare aggregate for other applications.
Step
1
2
3
4
5
Preparing Aggregate for Other Applications
Action
Reduce the sample to test size shown in Test Method "Tex-401-A, Sieve Analysis of Fine and
Coarse Aggregate."
♦ Make a rough separation of the sample into designated sizes by hand or mechanical sieving. If
mechanical sieving is used, limit sieving to the minimum required to separate the sample to
avoid abrasion of softer particles.
♦ Thoroughly wash the sample of coarse aggregate and then dry to a constant mass in the oven.
Hand sieve the sample to refusal according to Test Method "Tex-401-A, Sieve Analysis of Fine
and Coarse Aggregate," into the size fractions indicated in the
'Sample Size Fractions for Other Applications' table.
♦ Rock Riprap and Rock Riprap Bedding - Rock riprap consists of aggregate from which sizes
finer than 19.0 mm (3/4 in.) have been removed. Rock riprap bedding consists of aggregate
from which the sizes finer than 4.75 mm (No. 4) have been removed.
♦ Base Material - Base material consists of sizes between 37.5 mm (1-1/2 in.) and 300 µm (No.
50). Use the same masses as specified for concrete fine aggregate for sizes smaller than 4.75
mm (No. 4) and as specified for coarse aggregate for size fractions between 37.5 mm (1-1/2
in.) to 4.75 mm (No. 4).
♦ Micro-Surfacing Material – Micro-surfacing material consists of sizes between 4.75 mm (No.
4) and 300 µm (No. 50). Use the same masses as specified for concrete fine aggregates. Do
not test any material passing the 300 µm (No. 50) sieve. It is assumed to have 0% loss and is
accounted for in the normalized gradation as 26% of the sample.
Weigh out quantities of the different sizes within the tolerances shown above and where the test
portions consist of two sizes, combine them to the designated total mass.
Record the masses of the test samples and their fractional components.
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
The table below lists the sample size fractions for other applications.
Item
Rock Riprap
♦ consisting of:
Sample Size Fractions for Other Applications
Sieve Passing
Sieve Retained
63 mm (2-1/2 in.)
37.5 mm (1-1/2 in.)
♦ 63 mm (2-1/2 in.)
♦ 50 mm (2 in.)
♦ 50 mm (2 in.)
♦ 37.5 mm (1-1/2 in.)
Rock Riprap
♦ consisting of:
37.5 mm (1-1/2 in.)
♦ 37.5 mm (1-1/2 in.)
♦ 25.0 mm (1 in.)
19.0 mm (3/4 in.)
♦ 25.0 mm (1 in.)
♦ 19.0 mm (3/4 in.)
Rock Riprap Bedding
♦ consisting of:
63.0 mm (2-1/2 in.)
♦ 63.0 (2-1/2 in.)
♦ 50 mm (2 in.)
37.5 mm (1-1/2 in.)
♦ 50 mm (2 in.)
♦ 37.5 mm (1-1/2 in.)
Rock Riprap Bedding
♦ consisting of:
37.5 mm (1-1/2 in.)
♦ 37.5 mm (1-1/2 in.)
♦ 25.0 mm (1 in.)
19.0 mm (3/4 in.)
♦ 25.0 mm (1 in.)
♦ 19.0 mm (3/4 in.)
Rock Riprap Bedding
♦ consisting of:
19.0 mm (3/4 in.)
♦ 19.0 mm (3/4 in.)
♦ 12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
♦ 12.5 mm (1/2 in.)
♦ 9.5 mm (3/8 in.)
Rock Riprap Bedding
♦ consisting of:
9.5 mm (3/8 in.)
♦ 9.5 mm (3/8 in.)
♦ 6.3 mm (1/4 in.)
4.75 mm (No. 4)
♦ 6.3 mm (1/4 in.)
♦ 4.75 mm (No.4 )
Base Material
♦ consisting of:
37.5 mm (1-1/2 in.)
♦ 37.5 mm (1-1/2 in.)
♦ 25.0 mm (1 in.)
19.0 mm (3/4 in.)
♦ 25.0 mm (1 in.)
♦ 19.0 mm (3/4 in.)
Base Material
♦ consisting of:
19.00 mm (3/4 in.)
♦ 19.0 mm (3/4 in.)
♦ 12.5 mm (1/2 in.)
9.5 mm (3/8 in.)
♦ 12.5 mm (1/2 in.)
♦ 9.5 mm (3/8 in.)
Base Material
♦ consisting of:
9.5 mm (3/8 in.)
♦ 9.5 mm (3/8 in.)
♦ 12.5 mm (1/2 in.)
4.75 mm (No. 4)
♦ 12.5 mm (1/2 in.)
♦ 4.75 mm (No. 4)
Base Material
Base Material
Base Material
Base Material
4.75 mm (No. 4)
2.36 mm (No. 8)
1.18 mm (No. 16)
2.36 mm (No. 8)
1.18 mm (No. 16)
600 µm (No. 30)
300 µm (No. 50)
600 µm (No. 30)
Manual of Testing Procedures
8
Weight, g
5000 ± 300
♦ 3000 ± 300
♦ 2000 ± 200
1500 ± 50
♦ 1000 ± 50
♦ 500 ± 10
5000 ± 300
♦ 3000 ± 300
♦ 2000 ± 200
1500 ± 50
♦ 1000 ± 50
♦ 500 ± 10
1000 ± 10
♦ 670 ± 10
♦ 330 ± 5
300 ± 5
♦ 180 ± 5
♦ 120 ± 5
1500 ± 50
♦ 1000 ± 50
♦ 500 ± 10
1000 ± 10
♦ 670 ± 10
♦ 330 ± 5
300 ± 5
♦ 180 ± 5
♦ 120 ± 5
100 ± 5
100 ± 5
100 ± 5
100 ± 5
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Procedure
The following table lists the steps necessary to perform the soundness test.
Step
1
2
3
4
5
6
7
8
9
10
Performing the Soundness Test
Action
♦ Immerse samples in the prepared solution of sodium or magnesium sulfate for 16 to 18 hours.
♦ The solution must cover the samples by at least 12.5 mm (0.5 in.).
♦ Suitably weighted wire grids placed over the samples will permit this coverage to be achieved
with lightweight aggregates.
Cover the tank to reduce evaporation and prevent contamination.
Maintain the solution at a temperature of 20 to 24 °C (68 to 75 °F) for the immersion period.
Remove the aggregate samples from the solution, permit them to drain for 15 ± 5 minutes, and place
in the drying oven.
♦ Oven-dry the samples until they reach a constant mass (See NOTE 4).
♦ Constant mass will be considered achieved when the mass loss is less than 0.1% of the sample
mass in 4 h of drying.
Allow the samples to cool to room temperature.
Repeat Steps 1 through 6 for a total of five (5) cycles unless otherwise specified.
♦ After completion of the final cycle allow the sample to cool to room temperature.
♦ Wash sodium sulfate and magnesium sulfate free from the sample.
♦ Wash by circulating water continuously at 43 ± 6 °C (110 ± 10 °F) through the samples in their
containers.
♦ Circulation of the water occurs by allowing water, which starts near the bottom, to flow through
the samples and overflow.
♦ Determine the thoroughness of washing by obtaining a sample of water flushed through the
aggregate; check by adding 0.2 M barium chloride to the rinse water.
♦ If the water becomes cloudy, additional washing is required.
For aggregate retained on the No. 4 sieve:
♦ Using running water, wet sieve the aggregate with sufficient agitation to assure all undersized
material passes the sieve sizes listed in the 'Aggregate Retained on the No. 4 Sieve' table.
♦ While sieving, rinse the aggregate free of any salt with water over the sieve size designated in
the 'Aggregate Retained on No. 4 Sieve' table.
♦ Clean the sample containers.
♦ Return the samples to the containers and oven-dry each fraction to a constant mass (see NOTE
4).
For aggregate passing the No. 4 sieve:
♦ Using warm running water or spray at 43 ± 6 °C (110 ± 10 °F), rinse the samples in the container
free of any possible remaining salt. Do not allow the samples to be subjected to impact or
abrasion during rinsing.
♦ Oven-dry each fraction to a constant mass (see NOTE 4).
♦ Hand sieve (dry) the fractions over the same sieve on which it was retained before the test.
♦ Sieve to refusal according to Test Method "Tex-401-A, Sieve Analysis of Fine and Coarse
Aggregate."
Weigh the material retained on each sieve to the nearest 0.1 g and record each mass.
Manual of Testing Procedures
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
The following table lists the aggregate retained on No. 4 sieve (see Step 9 of the
'Performing the Soundness Test' procedure).
Aggregate Retained on No. 4 Sieve
Retained on Sieve
Sieve Used to Determine Loss
50 mm (2 in.)
37.5 mm (1-1/2 in)
37.5 mm (1-1/2 in.)
31.5 mm (1-1/4 in.)
19.0 mm (3/4 in.)
16.0 mm (5/8 in.)
9.5 mm (3/8 in.)
8.0 mm (5/16 in.)
4.75 mm (No. 4)
4.0 mm (No. 5)
NOTE 4: Drying time required to reach constant mass may vary considerably for several
reasons. Efficiency of drying will be reduced as cycles accumulate because of salt
adhering to particles and, in some cases, because of increase in surface area due to
breakdown. The different size fractions of aggregate also will have different drying
rates. The smaller sizes will tend to dry more slowly because of their larger surface area
and more restricted interparticle voids, but this tendency may be altered by the effects
of the container size and shape.
NOTE 5: Permitted-loss percentage differs between fine and coarse aggregates and the use
of the two salts. The test is more severe when magnesium sulfate is used; accordingly,
the percent losses allowed are higher than those produced when sodium sulfate is used.
Calculations
Use the following calculations to determine percent loss.
♦
Calculate Individual Percent Loss of each size fraction (ci)
ci = [( ai − bi ) / ai ] 100
Where:
♦
•
ai = initial mass of each size fraction
•
bi = final mass of each size fraction.
Calculate Normalized Percent Loss of each size fraction (di), from the
'Normalized Gradations' table
d i = (ci ) • Normalized Gradation Percent
♦
Calculate Total Percent Loss
e = Σ ( di )
NOTE: See 'Examples of Calculations' for different applications of calculations for Concrete
Fine Aggregate, HMAC Coarse Aggregate, and Rock Riprap Bedding.
Examples of Calculations
Manual of Testing Procedures
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Chapter 4, Concrete
Tex-411-A, Soundness of Aggregate Using
Sodium Sulfate or Magnesium Sulfate
Size
(a)
Orig. Wt.
(grams)
(b)
Wt. Ret.
(grams)
(c)
Individual
% Loss
Normal.
Grad. %
(d)
Normal
% Loss
100.2
100.7
99.6
100.3
92.6
94.8
93.2
96.5
0
7.6
5.9
6.4
3.8
0
10
23
22
22
23
0.8
1.4
1.4
0.8
0
100
4.4
Concrete Fine Aggregate
4.75 mm - 2.36 mm (No. 4 - No. 8)
2.36 mm - 1.18 mm (No. 8 - No. 16)
1.18 mm - 600 µm (No. 16 - No. 30)
600 µm - 300 µm (No. 30 - No. 50)
minus 300 µm (No. 50)
Total =
% Unsound = 4
400.8
HMAC Coarse Aggregate Example
12.5 mm - 9.5 mm (1/2 in. - 3/8 in.)
9.5 mm - 4.75 mm (3/8 in. - No. 4)
4.75 mm - 2.36 mm (No. 4 - No. 8)
Total =
% Unsound = 24
Rock Riprap Bedding Example
63.0 mm - 37.5 mm (2-1/2 in.- 1-1/2
in.)
37.5 mm - 19.0 mm (1/2 in. – 3/4 in.)
19.0 mm - 9.5 mm (3/4 in. - 3/8 in.)
9.5 mm - 4.75 mm (3/8 in. - No. 4)
Total =
% Unsound = 5
1009.5
298.6
100.3
858.6
228.5
71.3
14.9
23.5
28.9
1408.4
13
50
37
1.9
11.8
10.7
100
24.4
4989.7
4887.5
2.0
24
0.5
1502.3
1008.6
297.0
1428.2
951.1
268.3
4.9
5.7
9.7
39
24
13
1.9
1.4
1.3
100
5.1
7797.6
Reporting Test Results
Report test results to the nearest whole number.
A worksheet should contain:
♦
Initial mass of each size fraction
♦
Final mass of each size fraction
♦
The individual percent loss of each sample fraction
♦
Total percent loss of the sample
♦
Kind of solution (Sodium or Magnesium sulfate)
♦
The number of cycles tested.
Manual of Testing Procedures
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