ASTM C642 PDF DOWNLOAD

ASTM C pdf – Download as PDF File .pdf), Text File .txt) or read online. Baixe grátis o arquivo ASTM C – 13_Density, absortion and Voids in Hardened enviado por Juliano no curso de Engenharia Civil na UERJ. 5 Sep KT reflects testing procedures found in ASTM C ASTM C ; Standard Test Method for Density, Absorption, and Voids in Hardened.

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Users of this standard are expressly advised that determination of the validity of any such astm c642 rights, and the risk of infringement astm c642 such rights, are entirely their own responsibility. C39M – 16 – Compressive Strength of Cylindrical If you feel that your comments have not 6c42 a fair hearing astm c642 should make your views known to the ASTM Committee on Standards, at the address shown below. Designate this last value A. Surface-dry the specimen by removing surface moisture with a towel, and determine the mass.

If the third value checks the second, consider the specimen dry. No further reproductions authorized.

ASTM C – 13 Standard Test Method for Density, Absorption, and Voids in Hardened Concrete

If a rigorous measure of total pore space is desired, this can only be obtained by determining absolute density by first reducing the sample to discrete particles, each of which is sufficiently small so astk no impermeable pore astm c642 can exist within any of the particles.

Originally approved in Your astm c642 are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

If the specimen was comparatively dry when its mass was first determined, and the second mass closely agrees with astm c642 first, consider it dry. If the absolute density were determined and designated g3, then:. In the example astm c642 it was assumed that the absolute density of the solid portion of the specimen was 2. Remove the surface moisture with a towel and c624 the mass of the specimen.

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If the difference between values obtained from two successive values of mass exceeds 0. A superscript epsilon indicates an editorial change astm c642 the last revision or reapproval. Depending on the pore size distribution and astm c642 pore entry radii of the concrete and on the purposes for which the test results are desired, the procedures of this test method may be adequate, or they may be insufficiently rigorous. CM – 12 – Microscopical Determination of It can be used to determine conformance with specifications for concrete and to astm c642 differences from place to place within a mass of concrete.

A number astm c642 parentheses indicates the year of last reapproval. Designate the soaked, boiled, aetm mass C. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. NOTE 2—This test method does not asmt a determination of absolute density. Concrete and Concrete Astm c642 and is the direct responsibility of Subcommittee C Designate the final surface-dry mass after immersion B.

Astm c astm normas fibra de vidrio.

Current edition approved Feb. The individual portions may be pieces of cylinders, cores, or astm c642 of any desired shape or size, except that astm c642 volume of each portion shall be not less than cm3 or for normal weight asttm, approximately g ; and each portion shall be free from observable cracks, fissures, or shattered edges.

This standard is issued under the fixed designation C; the number immediately following the designation indicates the year of original astm c642 or, in the case of revision, the year of last revision. ASTM Volume If the astm c642 was wet when its mass was first determined, place it in the f642 for a second drying treatment of 24 h and again determine the mass.

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ASTM C642 – 13-Density, absortion and Voids in Hardened Concrete

These notes and footnotes excluding those in tables and figures shall not be considered as requirements of this standard.

Approved February 1, In the event that it is desired to fill more of the pores than will be filled by immersion and boiling, various astm c642 involving the use astm c642 vacuum treatment or increased pressures may be used. asm

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. It is the responsibility of the user of this standard to establish appropriate safety astm c642 health practices and determine the applicability of regulatory limitations prior astm c642 use. The operations, if performed, and the calculations, if performed as described, have the effect of assuming that there are 95 cm3 of pore space and cm3 of solids, and indicate that the solid material, therefore, has an apparent density of 1.

Designate this apparent mass D. Committee C09 has identified the location of selected changes to this test method since the last issue, C — 06, that may impact the use of this test method. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.

In case of any doubt, redry the specimen for h periods until check values of mass are obtained. Last previous edition approved in as C — Individual astm c642 single or multiple astm c642 of this standard may be obtained by contacting ASTM at the above address or astm c642 phonefaxor service astm.