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ASTM C125-2019 pdf free download

ASTM C125-2019 pdf free download.Standard Terminology Relating to Concrete and Concrete Aggregates
1. Scope
1.1 This standard is a compilation of definitions of terms as they are used in standards under the jurisdiction of Committee C09. 1.2 Other terminology under the jurisdiction of Committee C09 is included in two specialized standards. Terms relating to constituents of concrete aggregates are defined in Descriptive Nomenclature C294. Terms relating to constituents of aggre- gates for radiation-shielding concrete are defined in Descrip- tive Nomenclature C638. 1.3 Related terminology for hydraulic cement is included in Terminology C219. In the event of conflict between definitions in Terminology C125 and definitions in Terminology C219, definitions in Terminology C125 shall govern for Committee C09 standards. 1.4 When a term is used in an ASTM standard for which Committee C09 is responsible, it is included herein only ifused in more than one Committee C09 standard. N OTE 1—The subcommittee responsible for this standard will review definitions on a five-year basis to determine if the definition is still appropriate as stated. Revisions will be made when determined necessary. The year shown in parentheses at the end of a definition indicates the year the definition or revision to the definition was approved. A letter R and a year indicate when the definition was reviewed. No date indicates the term has not yet been reviewed. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terms and Their Definitions
absorption, n—the process by which a liquid is drawn into and tends to fill permeable pores in a porous solid body; also, the increase in mass of a porous solid body resulting from the penetration of a liquid into its permeable pores. (R2008) D ISCUSSION —In the case of concrete and concrete aggregates, unless otherwise stated, the liquid involved is water, the increase in mass is that which does not include water adhering to the outside surface, the increase in mass is expressed as a percentage of the dry mass of the body and the body is considered to be “dry” when it has been treated by an appropriate process to remove uncombined water, such as drying to constant mass at a temperature between 100 and 110°C. accreditation, n—of testing agency, a process by which an evaluation authority attests that a testing agency has dem- onstrated the competency to perform specific tasks in accor- dance with a standard. (2011) admixture, n—a material other than water, aggregates, cemen- titious material, and fiber reinforcement that is used as an ingredient of a cementitious mixture to modify its freshly mixed, setting, or hardened properties and that is added to the batch before or during its mixing. (R2015) accelerating admixture, n—an admixture that increases the rate of reaction of cementitious materials thus reducing time of setting and increasing early strength development of a cemen- titious mixture. (2015) air-entraining admixture, n—admixture that causes the de- velopment of a system of microscopic air bubbles in concrete or mortar during mixing. (R2008) chemical admixture, n—an admixture in the form ofa liquid, suspension, or water-soluble solid. (2014) extended set-control admixture, n—an admixture that can predictably reduce the hydration rate ofcement for applications requiring extended time of setting followed by normal strength development. (2019)

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