ASTM C359-08
Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- Standard No.
- ASTM C359-08
- Release Date
- 2008
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM C359-13
- Latest
- ASTM C359-21
- Scope
The purpose of this test method is to determine the degree to which a cement mortar develops early stiffening. It is intended for use by those interested in methods for determining the potential early stiffening of hydraulic cement.
When used for estimating the relative tendency of a cement to manifest early stiffening, a judgment may be made by comparing the behavior in the penetration series (see 10.4.1 and 10.4.2) and the remix procedure (see 10.4.3) to differentiate a relatively less serious and less persistent tendency to early stiffening (false set) from one that is more persistent and, consequently, more serious (flash set).
Severe false setting in a cement may cause difficulty from a placing and handling standpoint, but it is not likely to cause difficulties where concrete is mixed for a longer time than usual, as usually occurs in transit mixing, or where it is remixed prior to placing or transporting, in concrete pumping operations. It is most likely noticed where concrete is mixed for a short period of time in stationary mixers and transported to the forms in non-agitating equipment, as on some paving jobs, and when concrete is made in an on-site batch plant.
Cements with severe false setting usually require slightly more mixing water to produce the same consistency, which may result in slightly lower strengths and increased drying shrinkage.
Early stiffening resulting from false set is not likely to cause a cement to fail the applicable time of setting requirement.
Early stiffening resulting from flash set, depending on severity, can cause a cement to fail the applicable time of setting requirement.
1.1 This test method covers the determination of early stiffening in hydraulic-cement mortar.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.3 This standard 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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. The use of gloves, protective clothing, and eye protection is recommended. Wash contact area with copious amounts of water after contact. Wash eyes for a minimum of 15 min. Avoid exposure of the body to clothing saturated with the liquid phase of the unhardened material. Remove contaminated clothing immediately after exposure. )
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
ASTM C359-08 Referenced Document
- ASTM C1005 Standard Specification for Reference Masses and Devices for Determining Mass and Volume for Use in Physical Testing of Hydraulic Cements
- ASTM C183 Standard Practice for Sampling and the Amount of Testing of Hydraulic Cement
- ASTM C185 Standard Test Method for Air Content of Hydraulic Cement Mortar
- ASTM C187 Standard Test Method for Normal Consistency of Hydraulic Cement
- ASTM C305 Standard Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
- ASTM C670 Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
- ASTM C778 Standard Specification for Standard Sand
- ASTM D1193 Standard Specification for Reagent Water
- ASTM E2251 Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
ASTM C359-08 history
- 2021 ASTM C359-21 Standard Test Method for Early Stiffening of Hydraulic-Cement (Mortar Method)
- 2020 ASTM C359-20 Standard Test Method for Early Stiffening of Hydraulic-Cement (Mortar Method)
- 2018 ASTM C359-18 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2013 ASTM C359-13 Standard Test Method for Early Stiffening of Hydraulic Cement 40;Mortar Method41;
- 2008 ASTM C359-08 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2007 ASTM C359-07 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2006 ASTM C359-06 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2005 ASTM C359-05 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2004 ASTM C359-04 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2003 ASTM C359-03a Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 2003 ASTM C359-03 Standard Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)
- 1999 ASTM C359-99 Standard Test Method for Early Stiffening of Portland Cement (Mortar Method)
