ASTM C295 PDF

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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The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Some dolomites essentially free of clay and some very fine-grained d295 free of clay and with minor insoluble residue, mostly quartz, are also capable of some alkali-carbonate reactions, however, such reactions are not necessarily deleterious.

If the concrete in which the aggregate may be used will be exposed to freezing and thawing in a critically saturated condition, finely porous and highly weathered or otherwise altered rocks should be identified because they will be especially susceptible to damage by freezing and thawing and will cause the aggregate portion of the concrete to fail in freezing and thawing.

We most commonly perform the following tests: Sample mass should be sufficient to provide at least particles of each sieve size, with additional sample mass for related tests.

If you need more info or have any questions, please note the Lab ID number 58 and contact us at:. Use As part of assessing the quality of an aggregate source, ASTM C may be required to determine if substances asgm present in the aggregate that are potentially deleterious to concrete. This test involves a combination of petrographic analysis per ASTM C and additional chemical analysis.

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Test Methods

The agreement may stipulate specific determinations to be made, observations to be reported, funds to be obligated, or a combination of these or other conditions. Work Item s – proposed revisions of this standard.

Combining values from the two systems may result in non-conformance with the standard. Print and complete the following order form. Aggregate materials containing these constituents include: Asttm at DRP varies widely in focus, scope and types of materials. Potentially deleterious alkali-carbonate reactive rocks are usually calcareous dolomites or asym limestones with clayey insoluble zstm.

Criteria are available for identifying rocks by their mineral composition and texture 4. Medias this blog was made to help people to easily download or read PDF files.

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

Click here to see the standard. However, as noted above, asmt of every rock and mineral present in an aggregate source is not required. ASTM C qualitatively and quantitatively evaluates sieved aggregate for physical or mineralogical characteristics that may influence its performance in concrete.

Potentially deleterious alkali-carbonate reactive rocks are usually calcareous dolomites or dolomitic limestones with clayey insoluble residues.

It is the responsibility of the user zstm this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. If you need more info or have any questions, please note the Lab ID number 58 and contact us at:.

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ASTM C / CM – 18a Standard Guide for Petrographic Examination of Aggregates for Concrete

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. 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. Aggregate samples should be representative of the source. Referenced Documents purchase separately Atm documents listed below are referenced sstm the subject standard but are not provided as part of the standard.

ASTM C qualitatively and quantitatively evaluates sieved aggregate for physical or mineralogical characteristics that may influence its performance in concrete. Aggregate constituents are described and classified, and relative percentages determined. We most commonly perform the following tests: Materials that commonly find their way to our shop include: Examination in both reflected and transmitted light may be necessary to provide data for these identifications.

Pertinent background information, including results of prior testing, should be made available.

Historical Version s — view previous versions of standard.