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.

1.1 This specification covers three types of masonry cement for use where mortar for masonry is required.

1.2 The values stated in SI units are to be regarded as the standard. Values in SI units shall be obtained by measurement in SI units or by appropriate conversion of measurements made in other units, using the Rules for Conversion and Rounding given in IEEE/ASTM SI 10.

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 16 and 17 of this specification. 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.)