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Organic Impurities In Aggregate

  • MATERIAL SPECIFICATION FOR AGGREGATES - Ontario

    C 87/87M-10 Effect of Organic Impurities in Fine Aggregate on Strength of Mortar . D 6473-10 Standard Test Method for Specific Gravity and Absorption of Rock for Erosion Control . 1004.03 DEFINITIONS . For the purpose of this specification, the following definitions apply:

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  • ASTM C 33/C33M—08 Specification for Concrete Aggregates .

    Fine aggregate shall be free of injurious amounts of organic impurities. Fine aggregate for use in concrete that will be subject to wetting, extended exposure to humid atmosphere, or contact with moist ground shall not contain any materials that are deleteriously reactive with the alkalis in the cement in amount sufficient to cause excessive .

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  • Test Procedures (400-A Series)

    Organic Impurities in Fine Aggregate for Concrete: X: Tex-409-A: Free Moisture and Water Absorption in Aggregate for Concrete: Tex-410-A: Abrasion of Coarse Aggregate Using the Los Angeles Machine: Tex-411-A: Soundness of Aggregate Using Sodium Sulfate or Magnesium Sulfate: X: Tex-412-A: Lightweight Pieces in Aggregate: Tex-413-A

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  • Organic Impurities in fine aggregates - lovibond

    Organic impurities, usually in the form of tannic acid and its derivatives, are typically present in fine aggregates such as sand. These may interfere with the chemical reaction of hydration and may effect the strength of the mortar or concrete where the aggregates are used. The test method for this determination conforms to the alternative procedure specified in ASTM C40.

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  • SiteManager Forms

    Below are links to Excel forms for use with SiteManager, a software program that automates and streamlines the management of highway construction contracts.

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  • Simple Field Testing of Materials - Civil Engineering Portal

    test for organic impurities in fine aggregate The aggregate must be checked for organic impurities such as decayed vegetations, humus, and coal dust, etc. Colour test is a reliable indicator of the presence of harmful organic matter in aggregates except in areas where there are deposits of lignite.

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  • AF347 Organic Impurities in Fine Aggregates (ASTM C40 .

    :413470. Lovibond ® AF347 Test Kit Organic Impurities in Fine Aggregates, according to ASTM C40Compact, robust and easily portable for site use. No need to prepare a standard solution. Simple, straightforward test procedure

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  • Deleterious Substances in Aggregate- Alkali-Aggregate .

    Deleterious Substances in Aggregate- Alkali-Aggregate Reactions Organic Impurities Organic impurities interfere with the hydration reaction Organic matter. Deleterious Substances in Aggregate- Alkali-Aggregate Reactions Organic Impurities Organic impurities interfere with the hydration reaction Organic .

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  • Section 902 AGGREGATES

    a. Fine aggregate includes all aggregates particles passing the No. 4 sieve. b. The fine aggregate must meet the requirements of subsection 902.08. 902.04. Chip Seal Aggregates. For chip seal, use 34CS aggregate with a maximum moisture content of 4 percent, calculated in accordance with section 109 at the time of placement, and in accordance .

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  • Organic Impurities Test Set | Product categories

    Categories. Materials Testing. Material Testing - Aggregate. Hydrometer Sets and Accessories; . Organic Impurities Test Set. Showing the single result. Home > Materials Testing > Material Testing - Aggregate > Organic Impurities Test Set Hanna Instruments pHep®5 pH/Temperature Tester, Range: -2.0 to 16.0 pH, Resolution: 0.01 pH .

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  • HOW AGGREGATE PROPERTIES AFFECTS CONCRETE PROPERTIES .

    The aggregate should not contain harmful organic impurities, excess to the limit specified. Aggregate Crushing Value (ACV) Aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load.

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  • AASHTO T 21 - Standard Method of Test for Organic .

    Jan 01, 2005 · AASHTO T 71 - Standard Method of Test for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar. Published by AASHTO on January 1, 2008. This test method covers the determination of the effect on mortar strength of the organic impurities in fine aggregate, whose presence is indicated by tests with T 21. Comparison is made between.

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  • Section 902 AGGREGATES

    a. Fine aggregate includes all aggregates particles passing the No. 4 sieve. b. The fine aggregate must meet the requirements of subsection 902.08. 902.04. Chip Seal Aggregates. For chip seal, use 34CS aggregate with a maximum moisture content of 4 percent, calculated in accordance with section 109 at the time of placement, and in accordance .

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  • Simple Field Testing of Materials - Civil Engineering Portal

    test for organic impurities in fine aggregate The aggregate must be checked for organic impurities such as decayed vegetations, humus, and coal dust, etc. Colour test is a reliable indicator of the presence of harmful organic matter in aggregates except in areas where there are deposits of lignite.

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  • ACI Certification - Concrete - NICET Main

    ACI Certification - Concrete Concrete Work Element Credit for ACI Certification. You'll have a head start in meeting NICET's examination requirement for the Construction Materials Testing subfield of Concrete if you have one or more of the following ACI certifications:

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  • Aggregate Testing Standards — EnviroMINE, Inc.

    Dec 01, 2014 · Aggregate is the main ingredient in Portland Cement Concrete and Asphalt Concrete. All aggregate used for construction purposes must be tested, physically and chemically, to verify its suitability for these uses. Every potential production site must be tested to ensure that the m

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  • CCANZ - Impurities and Other Harmful Materials

    If the colour of the liquid is darker than that of the reference solution, the aggregate contains organic compounds and further tests should be made to determine if these are harmful. Normally, the strength of concrete made with the sand is used as a gauge of the harmful effects of the impurities.

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  • ELE International - Organic Impurities in Fine Aggregate

    If aggregate contains organic impurities it may not be suitable for inclusion in concrete. Organic impurities, usually tannic acid and its derivatives, may interfere with the chemical reactions of hydration. Impurities are more likely to be found in fine (sand) aggregate.

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  • Section 501 Concrete

    501.2.5.3.2 Organic Impurities (1) Fine aggregate shall not contain harmful quantities of organic impurities. The engineer will reject aggregates, subjected to the colorimetric test for organic impurities, producing a darker than standard color, unless they pass the mortar strength test.

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  • Organic Impurities ASTM-Color Reference Chart - Gilson Co.

    The HM-815 Organic Impurities ASTM-Color Reference Chart is used in estimating the presence of organic compounds in fine aggregates in accordance with ASTM and AASHTO requirements. The chart has five permanent reference colors which meet the most current revisions, and is housed in a sturdy protective plastic case.

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  • ASTM C40/C40M - Standard Test Method for Organic .

    Jan 01, 2019 · ASTM C87/C87M - Standard Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar. Published by ASTM on May 1, 2017. This test method covers the determination of the effect on mortar strength of the organic impurities in fine aggregate, whose presence is indicated using Test Method C40/C40M. Comparison is made.

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  • Standard Test Method for Organic Impurities in Fine .

    C87/C87M Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar. C125 Terminology Relating to Concrete and Concrete Aggregates. C702/C702M Practice for Reducing Samples of Aggregate to Testing Size. D75/D75M Practice for Sampling Aggregates.

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  • ASTM C40 : Standard Test Method for Organic Impurities in .

    This test method covers two procedures for an approximate determination of the presence of injurious organic impurities in fine aggregates that are to be used in hydraulic cement mortar or concrete. One procedure uses a standard color solution and the other uses a glass color standard.

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  • SECTION 701 AGGREGATES

    D. Organic Impurities. Aggregate subjected to the colorimetric test for organic impurities and producing a color darker than the standard will be rejected unless the aggregates pass the mortar strength test specified in (E) below. Do not use aggregates showing a

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  • HOW TO CHECK IMPURITIES IN SAND ON SITE?

    Organic impurities in sand may be either due to decayed vegetation, humus, coal particles, or organic and industrial wastes depending upon the source of the sand. It is generally considered that organic impurities retard the setting of cement and thus have deleterious effect on the strength of .

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  • Test method T260

    (b) If the colour of the liquid above the fine aggregate is darker than the reference colour, the sample is reported "Fails" on the test report and desirability of performing further tests to assess the effect of organic impurities on the concrete-making properties of the fine aggregate .

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  • ASTM C40 | Testing Services | Standard Test Method for .

    Standard Test Method for Organic Impurities in Fine Aggregates for Concrete Reference Number ASTM C40 Material. Aggregate. Test Property. Injurious organic impurities. Description of Test. The fine aggregate is placed into a glass bottle with a 3% sodium hydroxide solution. The mixture is shaken vigorously and allowed to stand for 24-hours.

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  • AASHTO T 21 | Testing Services | Organic Impurities in .

    Organic Impurities in Fine Aggregates for Concrete Reference Number AASHTO T 21 Material. Aggregate. Test Property. Organic content. Description of Test. The fine aggregate is placed into a glass bottle with a 3% sodium hydroxide solution. The mixture is .

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  • ASTM C40 | Testing Services | Standard Test Method for .

    Standard Test Method for Organic Impurities in Fine Aggregates for Concrete Reference Number ASTM C40 Material. Aggregate. Test Property. Injurious organic impurities. Description of Test. The fine aggregate is placed into a glass bottle with a 3% sodium hydroxide solution. The mixture is shaken vigorously and allowed to stand for 24-hours.

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  • Manual of Aggregate Quality Test Procedures

    organic impurities in fine aggregate, whose presence is indicated by tests with ITP 21. Comparison is made between compressive strengths of mortar made with washed and unwashed fine aggregate. 1.2 The values stated in English units are to be regarded as the standard.

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