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This specification covers three types of masonry cement for use where mortar for masonry is required. Masonry cement shall conform to the applicable physical property requirements prescribed. The masonry cement shall be sampled in accordance with practice C 183. The temperature and relative humidity of the air in the vicinity of the mixing slab and dry materials, molds, base plates, and mixing bowl shall conform to the requirements of test method C 109/C 109M. Determine normal consistency by the Vicat apparatus in accordance with test method C 187. Determine autoclave expansion in accordance with test method C 151. Determine the time of setting by the Gillmore needle method in accordance with test method C 266. Determine the density of the masonry cement in accordance with test method C 188, using kerosene as the liquid. The sand shall be a blend of equal parts by weight of graded standard sand and standard 20-30 sand conforming to specification C 778. The compressive testing procedures for mortars are presented. Water retention shall be determined in accordance with the procedures in test method C 1506.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers three types of masonry cement for use where mortar for masonry is required.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and Rounding given in Standard , of measurements made in other units. Values are stated in only SI units when inch-pound units are not used in practice.
1.3 The text of this standard refers to 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.
1.4 The following safety hazards caveat pertains only to Sections 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. and of this specification. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C151 Test Method for Autoclave Expansion of Hydraulic Cement
C183 Practice for Sampling and the Amount of Testing of Hydraulic Cement
C185 Test Method for Air Content of Hydraulic Cement Mortar
C187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement Paste
C188 Test Method for Density of Hydraulic Cement
C219 Terminology Relating to Hydraulic Cement
C266 Test Method for Time of Setting of Hydraulic-Cement Paste by Gillmore Needles
C270 Specification for Mortar for Unit Masonry
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C430 Test Method for Fineness of Hydraulic Cement by the 45-m (No. 325) Sieve
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
C778 Specification for Standard Sand
C1506 Test Method for Water Retention of Hydraulic Cement-Based Mortars and Plasters
ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
UNSPSC Code 30111504(Mortars); 30111600(Cement and lime)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM C91 / C91M-18, Standard Specification for Masonry Cement, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top