ASTM C642 PDF

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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The samples used for porosity determination were cast in plastic 4 8 in. Remove the surface moisture with a towel and determine the mass of the specimen.

ASTM C642 – 13

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. The theoretical paste porosity and total porosity are illustrated in Fig.

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

It is interesting c6642 note that at the highest level of vacuum 7Torr the measured porosity If the third value checks the second, consider the specimen dry.

Although tests like water sorption ASTM C [8] measure the change in mass of a sample as a function of time as water is absorbed, Castro et al. The theoretical pore volume porosity of the paste can be considered as the sum of. This suggests that Astm a Astm a If the specimen was wet when its mass was first determined, place it in the oven for a second drying treatment of 24 h and again determine the mass.

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To quantify the sizes of such larger pores, a desorption isotherm was measured for the mortar part of the concrete material Fig. Originally approved in c62 If the absolute density were determined and designated g3, then:.

Concrete is a porous material with a wide range of pore sizes. Designate this apparent mass D. This part of the porosity accounts for Pore volume is also important for a variety of transport problems and is used as an input for durability or shrinkage models [3,4]. 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.

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. Although different groups are currently considering rapid electrical test methods in potential standardization, tests like ASTM C [2] also rely on the concrete being saturated.

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. Approved February 1, Designate the soaked, boiled, surface-dried mass C. C39M – 16 – Compressive Strength of Cylindrical Remember me for one month. Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C Land Use and Development.

Manuscript received July 19, ; accepted for publication April 8, ; published online June 23, C [10] as compared with using the vacuum saturation approach for a typical air-entrained INDOT class C bridge deck concrete mixture that was produced using concrete from a ready-mix concrete truck.

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

This standard is c6442 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. 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.

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 adtm. Print 1 2 3 4 5 page sstarting from page current page.

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ASTM – Comparison of the Pore Volume in Concrete as Determined Using ASTM C

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. The slump of the concrete was 4 in.

Please login to your authorized staff account to use this feature. Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence.

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ASTM Volume Nails, Spikes, and Staples. Current edition approved Feb.