ASTM C856 PDF

This standard is issued under the fixed designation C ; the number 1 This practice is under the jurisdiction of ASTM Committee C09 on Concrete. ASTM C – Download as PDF File .pdf), Text File .txt) or read online. ASTM C has been carried out in accordance with ASTM C to identify any potential AAR con ituent and was written by. Dr R.J. Sewell of the Geological Survey.

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A photographic chart of materials, phenomena, and reaction products discussed in Sections 8 — 13 and Tables 1- 6 are available as Adjunct C ADJC Selection and Use of Apparatus. Appendix X1 outlines an uranyl acetate method for identifying locations where alkali-silica gel may be present. Ground surface of concrete containing portland blast-furnace slag cement are unusually white near-free surfaces but retain greenish or blue-greenish patches, and slag particles can be seen with the stereomicroscope or polarizing microscope.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM C – 18a Standard Practice for Petrographic Examination of Hardened Concrete

Historical Version s – view previous versions of standard. Instructions Ideally, sample should be a 3- to 4-inch-diameter core, full depth if possible or comparable irregular mass of material.

The samples examined may be taken from concrete constructions, that is, all sorts of objects, units, or structures that have been built of hydraulic cement concrete. Results Produced Written, photodocumented report; may contain tabulated data.

Sections c586 normal to placement in conventionally placed concrete with normal bond tend to have aggregate knobs abundant on the bottom of the upper piece as cast and sockets abundant on the top of the lower piece as cast.

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Visual and Stereomicroscope Examination. This practice outlines the standard procedures for performing petrographic examination of hardened concrete samples. A specific hazard statement is given in 6.

A specific hazard statement is given in 6. If you need asttm info or have any questions, please note the Lab ID number 57 and contact us at: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Work Item s – proposed revisions of this standard.

Appropriate procedures for the sampling, preparation, and examination of specimens are detailed methodically. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Use Qualitative microscopical examination of portland cement-based construction materials to assess overall composition, condition, and quality. The SI units in parentheses are provided for information purposes only.

Reported data can include: Other mineral admixtures with characteristic particles visible at low magnification are recognizable. Selection and Use of Apparatus. Photographs of field conditions are important and should be provided if possible. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

Selection and Use of Apparatus. Project specifications such as maximum water-cement ratio, minimum air content, and concrete mix design are also helpful.

Link to Active This link will always route to the current Active version of the standard.

The samples examined may be taken from concrete constructions, they may be concrete products or portions thereof, or they may be concrete or c8556 specimens that have been exposed in natural environments, or to simulated service conditions, or subjected to laboratory tests. Visual and Stereomicroscope Examination. Each report specifically addresses the client? Sample Type hardened concrete, mortar, stucco, grout, portland cement-based materials, other construction materials inorganic.

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Sections sawed in the plane of bedding normal to the direction of placement are likely to have inconspicuous orientation. Visual and Stereomicroscope Examination.

ASTM C – 17 Standard Practice for Petrographic Examination of Hardened Concrete

Qualifications of Petrographers and Use of Technicians. Work Item s – proposed revisions of this standard. Invaluable tool for evaluating concrete distress and construction materials issues, such as: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. For specimen examination, the equipments needed are stereomicroscope, dollies, petrographic or polarizing microscope, metallographic microscope, eyepiece micrometer, stage micrometer, microscope lamps, needleholders and points, bottles with droppers, assorted forceps, lens paper, refractometer, and cc856 media.

The samples examined may be taken from concrete constructions, they may be concrete products or portions thereof, or they may be concrete or mortar specimens that have been exposed in natural environments, or to simulated service conditions, or subjected to laboratory tests.

The SI units in parentheses are provided for information purposes only. Link to Active This link will always route to the current Active version of the standard.

Active view current version of standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior adtm use. This practice applies to samples of all types of hardened hydraulic-cement mixtures, including concrete, mortar, grout, plaster, stucco, terrazzo, and the like.