ASTM C780-11 Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
ASTM International / 01-Aug-2011 / 18 pages ASTM C780-11 pdf
Designation: ASTM C780 – 11
Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
This ASTM C780-11 standard is issued under the fixed designation C780; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. ASTM C780-11, A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ASTM C780-11, This standard has been approved for use by agencies of the Department of Defense.
1.1 This ASTM C780-11 test method covers procedures for the sampling and testing of mortars for composition and for their plastic and hardened properties, either before or during their actual use in construction.
Note 1 – Guide C1586 provides guidance on evaluating mortar and clarifies the purpose of both this test method and Specification C270, ASTM C780-11.
Note 2 – The testing agency performing this test method should be evaluated in accordance with Practice C1093.
1.2 Preconstruction Evaluation – This test method permits comparisons of mortars made from different materials under simulated field conditions. It is also used to establish baseline values for comparative evaluation of field mortars.
1.3 Construction Evaluation – Use of this method in the field provides a means for quality assurance of field-mixed mortar. ASTM C780-11, It includes methods for verifying the mortar mix proportions, comparing test results for field mortars to preconstruction testing, and determining batch-to-batch uniformity of the mortar.
1.4 The test results obtained under this test method are not required to meet the minimum compressive values in accordance with the property specifications in Specification C270.
1.5 The values stated in inch-pound units are to be regarded as standard. ASTM C780-11, The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6 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. ASTM C780-11, For specific hazards statements, see Section 8.
Keywords ASTM C780-11: aggregate ratio; air content; compressive strength; concrete penetrometer; cone penetrometer; consistency; consistency retention; mortar; tensile strength; Aggregate ratio; Aggregate-to-cement ratio; Air content; Composition analysis; Compression testing–masonry/mortar; Cone penetration; Cone penetrometer test; Consistency; Construction materials; Field testing; Hardness tests; Laboratory–construction materials testing; Masonry mortar; Mortar aggregate ratio test method; Penetration–cement/concrete; Plain unit masonry; Plastic properties; Preconstruction evaluation; Pressure meter method; Quality control (QC); Reinforced unit masonry; Sampling masonry materials/applications; Sampling mortar and grout; Specimen preparation (general); Tensile properties/testing–masonry assemblies; Volumetric measurement; Water content; ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar), ASTM C780-11.