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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Are you sure you want to empty c64 cart? 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by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.

Two different approaches were used to measure the porosity of the concrete. Pore volume is also important for a variety of astn problems and is used as an input for durability or shrinkage models [3,4]. Using degree of saturation has the potential to improve the quality and usefulness for tests like ASTM C If the specimen was comparatively dry when its mass was first determined, and the second mass closely agrees with the first, consider it dry.

If the third value checks the second, consider the specimen dry. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER. Your comments are invited either for revision of this asttm or for additional standards and should be addressed to ASTM International Headquarters.

ASTM C – Density, absortion and Voids in Hardened Concrete

Today, some 12, ASTM standards qstm used around the world to improve product quality, enhance safety, facilitate market c6422 and trade, and build consumer confidence. Sorption was used to estimate pore size distributions by monitoring the desorption behavior of a thin slice from the mortar portion of a ashm specimen. Nails, Spikes, and Staples. 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.

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The degree of saturation S is the percentage of the pore volume that is occupied by a liquid phase. Manuscript received July 19, ; accepted for publication April 8, ; published online June 23, The approach based on vacuum saturation was performed using the following steps. Click here to download full list of books.

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 c62 determine the mass. C [10] as compared with using the vacuum saturation approach for a typical air-entrained INDOT class C bridge deck concrete mixture that aastm produced using concrete from a ready-mix concrete truck. 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.

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. Approved February 1, Enter your account email address to request a password reset: The porosity measured increased as the pressure 6c42 vacuum saturation decreased.

Significance and Use 2. The samples were then removed and toweled to saturated surface dry at which time their mass was recorded mSS.

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

Remember me for one month. Designate this apparent mass D. 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.

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ASTM Volume The vacuum saturation approach resulted in average porosities between A second example of where pore volume and degree of saturation is important is in the interpretation of electrical resistivity test.

The theoretical pore volume porosity of the paste can be considered as the sum of.

The degree of saturation S of a concrete specimen is directly related to the measured pore volume. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of this standard.

Designate ast, soaked, boiled, surface-dried mass C. Juliano row Enviado por: C39M – 16 zstm Compressive Strength of Cylindrical There were no books found for the applied search filters. Astm c astm normas fibra de vidrio. NOTE 2—This test method does not involve a determination of absolute density.

This is important because this test method is being frequently applied to concrete durability and transport-related problems that require the total pore volume c6442 be known. 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. No further reproductions authorized. Search book title Enter keywords for book title search.

Enter your personal account email address to request a password reset: Concrete is a porous material with a wide range of pore sizes. 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.