Term
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Definition
| Standard Test Method for Organic Impurities in Fine Aggregates for Concrete |
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Term
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Definition
| Organic Impurities in Fine Aggregates for Concrete |
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Term
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Definition
| The principal value of this test method is to furnish a warning that injurious amount of organic impurities may be present. |
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Term
| Two methods of testing for organic impurities |
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Definition
1-Standard color solution
2-Glass color standard |
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Term
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Definition
1-Fill glass bottle to aproximately 130-mL with sample of the fine aggregate
2-Add sodium hydroxide solution until the volume of fine aggregate and liquid, indicated after shaking, is approximately 200mL
3-Stopper the bottle, shake and then allow to stand for 24h |
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Term
| When testing for organic impurities the sample should be approximately _____g(_____lb) and be taken from the larger sample. |
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Definition
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Term
| Procedure for testing for organic impurities by standard color solution |
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Definition
| At the end of the 24-h standing period, fill a glass bottle to the approximately 75-ml(2-1/2 fluid oz) level with the fresh standard color solution, not longer than 2h hours old. Compare the color of light transmitted throught the two liquids, record whether the color of the supernatant liquid is lighter, darker or equal to the color of the standard color solution. |
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Term
| Procedure for testing for organic impurities by glass color standard |
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Definition
| At the end of the 24-h standing period, compare the color of the supernatant liquid of the test sample to five glass standard colors. |
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Term
| If the color of the supernatant liquid is darker than the standard color or Organic Plate No3.(Gardner Color Standard No.11) the sample may be considered... |
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Definition
| To possibly contain injurious organic impurities, and further tests advisable before approving the fine aggregate for use in concrete. |
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Term
| The reagent solution of Sodium Hydroxide mixture |
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Definition
| 3 parts NaOH, 97 parts water |
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Term
| For the organic impuritties test the bottle should be approximately _____ to ___ and gradations gradations at ____ and ____ |
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Definition
ASTM - 240 to 470mL(8 to 16oz)
AASHTO - 350 to 475mL(12 to 16oz)
Gradations at 130 and 200mL(4.5 and 7oz) |
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Term
| For the organic impuritties test the bottle with the test mixture must stand for _____ hours |
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Definition
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