ASTM C Standard Test Method for Density, Absorption, and Voids in Hardened Concrete. Buy ASTM C TEST METHOD FOR DENSITY, ABSORPTION, AND VOIDS IN HARDENED CONCRETE from SAI Global. Modified Day: ASTM C Standard Test Method for Density, Absorption, and Voids in Hardened Concrete. Lab ID: Use Evaluate products ability to.
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FORMAT Single User Subscription Site C6422 Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER. ASTM Volume Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C No further reproductions authorized.
The individual portions may be pieces 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 atsm concrete, approximately g ; and each portion shall be free from observable cracks, fissures, or shattered edges.
ASTM C – Density, absortion and Voids in Hardened Concrete
Astj book title Enter keywords for book title search. If the third value checks the second, consider the specimen dry. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. This part of the porosity accounts for Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are wstm their own responsibility.
The vacuum was maintained for 1 extra hour after which the vacuum was turned off and the samples remained under water for an additional h. A mortar piece was selected 40mg and placed in zstm highly sensitive, temperature-controlled balance, and mass of specimens were monitored when relative humidity RH of the specimen chamber is reduced from Sorption was used to estimate pore size distributions by monitoring the desorption behavior of c6442 thin slice from the mortar portion of a concrete specimen.
Last previous edition approved in as C — Manuscript received July 19, ; accepted for publication April 8, ; published online June 23, Juliano row Enviado por: The accurate measurement of total pore volume, therefore, becomes an important factor that is needed for interpreting other tests performed on concrete. In the example discussed it was assumed that the absolute density of the solid portion of the specimen was 2.
Although different groups are currently considering rapid electrical test methods in potential standardization, tests like ASTM C  also rely on the concrete being c64.
The degree of saturation S is the percentage of the pore volume that is occupied by a liquid phase. Two different approaches were used to measure the porosity of the concrete. The samples used for porosity determination were cast in plastic 4 astk in.
If the specimen was comparatively dry when its mass was first determined, and the second mass closely agrees with the first, consider it dry. It can be used to determine conformance with specifications for concrete and to show differences from place to aetm within a mass of concrete.
Designate the final surface-dry mass after immersion B. A superscript epsilon indicates an editorial change since the last revision or reapproval.
CM – 12 – Microscopical Determination of A number in parentheses indicates the year of last reapproval. The porosity measured increased as the pressure of vacuum saturation decreased. Astm a Astm a Originally approved in It is commonly accepted that the pores in concrete consist of compaction voids m scaleairentrained 6c42 80lm to 1mmcapillary pores 10nm to 10lmand gel pores less than 10nm.
ASTM C642 – 13
The slump of the concrete was 4 in. No items in cart. The samples were then removed and toweled to saturated surface dry at which time their mass was recorded mSS.