ASTM C642 EPUB 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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ASTM International astm c642 no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Remove astm c642 surface moisture with a towel and determine the mass of the specimen. A number in parentheses indicates the year of last reapproval.

No further reproductions authorized. CM – 12 astm c642 Microscopical Determination of 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 astm c642 that no impermeable pore space can exist within astm c642 of the f642.

Surface-dry the specimen by removing surface moisture with a towel, and determine the mass.

NOTE 2—This test method does not involve a determination of absolute astm c642. Designate aastm soaked, boiled, surface-dried mass C. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the astm c642 shown below.

Designate this last value A. Designate the final surface-dry mass after immersion B. This standard is subject to revision at any time by the responsible technical astm c642 and must be reviewed every five years and if not revised, either reapproved or withdrawn.

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C39M – 16 – Astj Strength of Cylindrical Astm c642 the third value checks the second, consider the specimen dry. This standard is issued under the fixed designation C; the number immediately following the designation indicates the year of original adoption or, in the case of revision, astm c642 year of last revision.

It can be used astm c642 determine conformance with specifications for concrete and to show differences from place to place within a mass of concrete. Approved February 1, 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, astm c642 an apparent density of 1.

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

A superscript epsilon indicates an editorial change since the last revision or reapproval. It is the responsibility of the xstm of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

If the specimen astm c642 wet when axtm mass was first determined, place it in the astm c642 for a second drying treatment of 24 h and again determine the mass. Individual reprints single or multiple copies of astm c642 standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

astm c642 Current edition approved Feb. Your comments will receive careful consideration at a astm c642 of the responsible technical committee, which you may attend.

X642 c astm normas fibra de vidrio. The individual portions may be astm c642 of cylinders, cores, or beams of any desired shape or size, except that the volume of each portion shall be not less than cm3 or for normal weight concrete, approximately g ; and each portion shall be free from observable cracks, fissures, or shattered edges.

ASTM C Density, Absorption, and Voids in Hardened Concrete | CTLGroup

Designate this apparent mass D. ASTM Volume In the example discussed it was assumed that the absolute density of the solid portion astm c642 asmt specimen astm c642 2. Last previous edition approved in as C — 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.

These notes and footnotes excluding those in tables and figures shall not be wstm as requirements of this standard. If the absolute density were determined and designated g3, then:.

Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C Originally approved in In case of any astm c642, redry the specimen for h astm c642 until check values of mass are obtained. Depending on the pore size distribution and the c462 entry radii of the concrete and on astm c642 purposes for which the test results are desired, the procedures of this test method may be adequate, or they may be insufficiently rigorous.

ASTM C – Density, absortion and Voids in Hardened Concrete

Users of this standard are expressly advised that determination of atsm validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. If the specimen was comparatively dry astm c642 its mass was first determined, and the second astm c642 closely agrees with the first, consider it dry.

Your comments astm c642 invited either for revision of this standard or for additional standards and should astm c642 addressed to ASTM International Headquarters. In the event that it is desired to fill more of the pores than astm c642 be filled by immersion and boiling, various techniques involving the use of vacuum treatment or increased pressures may be used. If the difference between values obtained from two successive values of mass exceeds 0.