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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Although tests like water sorption ASTM C  measure the change in mass of a sample as a function of time as water is absorbed, Castro et al. If you like to setup a quick demo, let us know at support madcad. The samples used for porosity determination were cast in plastic 4 8 in. The degree of saturation C42 is the percentage of the pore volume that is occupied by a liquid phase.
No items in cart. It aastm be used to determine conformance with specifications for concrete and to show differences from place to place within a mass of concrete.
ASTM C642 – 13
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C A superscript epsilon indicates an editorial change since the last revision or reapproval. CM – 12 – Microscopical Determination of Using degree of saturation has the potential to improve the quality and usefulness for tests like ASTM Asfm However, once this critical level of saturation is exceeded in the concrete, the saturated portion of the concrete develops damage progressively on each freezing and thawing cycle.
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 address shown below.
Numerous aspects of concrete performance can be related to the pore structure pore volume and pore size distribution including strength, transport properties, freeze and thaw resistance, and shrinkage.
These notes and footnotes excluding those in tables and figures shall not be considered as requirements of this standard. To quantify the sizes of such larger pores, a desorption isotherm was measured for the mortar part of the concrete material Fig. Remove the surface moisture with a towel and determine the mass of the specimen. Designate the final surface-dry mass after immersion B.
The accurate measurement of total pore volume, therefore, becomes an important factor that is needed for interpreting other tests performed on concrete. If the specimen was comparatively dry when its mass was first determined, and the second mass closely agrees with the first, consider it dry.
Surface-dry the specimen by removing surface moisture with a towel, asttm determine the mass. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Astm c astm normas fibra de vidrio. Designate this last value A. Designate the soaked, boiled, surface-dried mass C. Copyright Compu-tecture, Inc. Two different approaches were used to measure the porosity of the concrete. In the example discussed it was assumed that the absolute density of the solid portion of the specimen was 2. ASTM Volume NOTE 2—This test method does not c6442 a determination of absolute density. In case of any doubt, redry the specimen for h periods until check values of mass are obtained.
Remember me for one month. The theoretical pore volume porosity of the paste can be considered as the sum of.
ASTM C642 – 13-Density, absortion and Voids in Hardened Concrete
Concrete is a porous material with a wide range of pore sizes. Current edition approved Feb. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER. C39M – 16 – Compressive Strength of Cylindrical Register for a trial account. Search book title Enter keywords for book title search. Individual reprints single or multiple copies of this standard may be c6422 by contacting ASTM at the above address or at phonec6442or service astm.
As such, the accurate measurement of the total void space is critical.
ASTM C – Density, absortion and Voids in Hardened Concrete
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This is important because this test method is being frequently applied to concrete durability and transport-related problems that require the total pore volume to be known. The samples were double bagged and sealed until the time of testing approximately 9 months at which time the concrete was removed from the bag, cut into two 4-in.
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Pore volume is also important for a variety of transport problems and is used as an input for durability or shrinkage models [3,4]. Originally approved in 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. If the difference between values obtained from two successive values of mass exceeds 0. 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 to use.
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, the year of last revision.
If the third value checks the second, consider the specimen dry. A number in parentheses indicates the year of last reapproval. It asym interesting to note that at the highest level of vacuum 7Torr the measured porosity F Standard Specification for Driven Fasteners: Last previous edition approved in as Atsm — Although different groups are currently considering rapid electrical test methods in potential standardization, tests like ASTM C  also rely on the concrete being saturated.
The constituent volumes are 6.