This standard is issued under the fixed designation C ; the number 1 This guide is under the jurisdiction of ASTM Committee C09 on Concrete and. As part of assessing the quality of an aggregate source, ASTM C may be required to determine if substances are present in the aggregate that are. ASTM C/CM: Standard Guide for Petrographic Examination of Aggregates for Concrete.

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Accredited Materials Testing Laboratory

Materials that commonly find their way to our shop include: Order Form 2 Email complete form to contact listed below. Instructions Detailed report expressing composition and physical characteristics of the aggregate.

Criteria are available for identifying the minerals in the list above by their optical properties or by XRD 23. Print and complete the following order form. Petrographic examinations provide identification of types and varieties of rocks present in potential aggregates.

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ASTM C – 98 Standard Guide for Petrographic Examination of Aggregates for Concrete

Flat, elongated, and thin chip-like particles in aggregate increase the mixing water astmm and hence decrease concrete strength. C2995 is the industry standard throughout the world for investigating a multitude of problems.

Finely porous aggregates near the concrete surface are also likely to form popouts, which are blemishes on pavements and walls.

Standard Guide for Petrographic Examination of Aggregates for Concrete This examination identifies the rocks and minerals present in coarse and fine aggregates. Materials that commonly find their way to our shop include: Sample Type natural sand and gravel, drilled core, ledge rock, crushed stone, manufactured sand. Use As part of assessing the quality of an aggregate source, ASTM C may be required to determine if substances are present in the aggregate that are potentially deleterious to concrete.

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Standard Practice for Petrographic Examination astj Hardened Concrete This is the industry standard throughout the world for investigating a multitude of problems.

Test Methods

As part of assessing the quality of an aggregate source, ASTM C may be required to determine if substances are present in the aggregate that are. At least particles are identified for each sieve size in a gradation.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. ASTM C qualitatively and quantitatively evaluates sieved aggregate for physical or mineralogical characteristics that may influence its performance in concrete. Privacy Policy Sensors Sitemap. This examination identifies the rocks and minerals present in coarse and fine aggregates. Use As part of assessing the quality of an aggregate source, ASTM C atm be required to determine if substances are present in the aggregate that are potentially deleterious to asm.

If you need more info or have any questions, please note the Lab ID number 58 and contact us at:. The test provides key information on not only how much air is present, but whether the size and spacing of the voids are suitable for providing protection against freeze-thaw damage. Historical Version s — view previous versions of standard. The agreement may stipulate specific determinations to be made, observations to aztm reported, funds to be obligated, or a combination of these or other conditions.

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Examination in both reflected and transmitted light may be necessary to provide data for these identifications. Criteria are available for identifying the minerals in the list above by their optical properties or by XRD If you need more info or have any questions, please note the Lab ID number 58 and contact us at: Click here to see the standard.

If you need more info or have any questions, please note the Lab ID number 58 and contact us at:. ASTM C qualitatively and quantitatively evaluates sieved aggregate for physical or mineralogical characteristics that may influence its performance in concrete. Time for Results Please contact a CTLGroup chemical services representative or Project Manager to discuss your individual project needs and asgm response times.

Instructions Detailed report expressing composition and physical characteristics of the aggregate. ASTM C also can be used to evaluate compliance of the bulk aggregate to local, state, or federal specifications for the project, for the presence and abundance of deleterious materials. This test is essential for understanding the aggregates that are used to produce concrete and can be the only method capable of detecting components that may have adverse reactions from alkali-aggregate atsm, freeze-thaw damage, or other mechanisms such as popouts and sulfuric acid attack associated with iron sulfides.