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Significance and Use
5.1 The durability of concrete largely depends on the ease with which fluids, both liquids and gases can enter into and move through, the concrete.3 Adsorption and absorption of a liquid into empty or partially empty pores occur by capillary attraction.4 The continuity of the pores and their size, as well as the volume of the voids, are factors that affect the sorptivity.4
5.2 This test method is intended to compare the relative performance of concrete mixtures exposed to wetting and drying. It is not intended to compare the performance of concrete mixtures that will be submerged continuously.
5.3 This test method tests a concrete that is essentially dry, as contrasted to the condition of the concrete in Test Method C1585, in which much of the capillary water is retained.
5.4 This test method determines the water absorbed into dried concrete in the first 30 minutes as an indicator of the susceptibility of the concrete to water intrusion. This test method subjects all of the surfaces of the specimen to water thereby giving a value for bulk sorption of the specimen which gives an indication of the potential durability of the concrete mixture.
5.5 This test is applicable to hydraulic cement concrete mixtures with or without supplementary cementitious materials or admixtures.
5.6 This test method permits for the use of both cores and cast specimens. The results for cast specimens are not equivalent to those obtained from cores. Results can differ because, compared with cores, cast specimens have smoother surface texture, no damage from coring, and a greater amount of paste exposed at the surface.
5.7 This test is a measurement of the bulk sorption of concrete and has not been evaluated as a technique to assess the effectiveness of surface treatments applied to the concrete.
1.1 This test method covers the determination of water ingress into the bulk (mass) of a hardened, dried concrete specimen after being submerged for 30 minutes.
1.2 The text of this test method references notes that provide explanatory information. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This test method does not purport to address all of the safety concerns, if any, associated with its use. 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field
C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
C125 Terminology Relating to Concrete and Concrete Aggregates
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing of Hydraulic Cements
C1585 Test Method for Measurement of Rate of Absorption of Water by Hydraulic-Cement Concretes
ICS Number Code 91.100.30 (Concrete and concrete products)
UNSPSC Code 30111500(Concrete and mortars)
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ASTM C1757-13, Standard Test Method for Determination of One-Point, Bulk Water Sorption of Dried Concrete, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top