ASTM C780-02

Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry

SCOPE
1.1 This 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.
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. 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 C 270.
1.5 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. For specific hazards statements, see Section 8.

General Information

• Status: Historical
• Publication Date: 09-Jun-2002
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C12 - Mortars and Grouts for Unit Masonry
• Drafting Committee: C12.02 - Research and Methods of Test

Relations

• Replaces: ASTM C780-00 - Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
• Effective Date: 10-Jun-2002
• Replaced By: ASTM C780-05 - Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
• Effective Date: 15-Jul-2005
• Referred By: ASTM C1314-23a - Standard Test Method for Compressive Strength of Masonry Prisms
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1384-18e1 - Standard Specification for Admixtures for Masonry Mortars
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1072-22 - Standard Test Methods for Measurement of Masonry Flexural Bond Strength
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1586-20 - Standard Guide for Quality Assurance of Mortars
• Effective Date: 10-Jun-2002
• Referred By: ASTM C901-18 - Standard Specification for Prefabricated Masonry Panels
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1714/C1714M-23 - Standard Specification for Preblended Dry Mortar Mix for Unit Masonry
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1180-22 - Standard Terminology of Mortar and Grout for Unit Masonry
• Effective Date: 10-Jun-2002
• Referred By: ASTM C270-19ae1 - Standard Specification for Mortar for Unit Masonry
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1093-23 - Standard Practice for Accreditation of Testing Agencies for Masonry
• Effective Date: 10-Jun-2002
• Referred By: ASTM C1713-23 - Standard Specification for Mortars for the Repair of Historic Masonry
• Effective Date: 10-Jun-2002
• Referred By: ASTM E2260-21a - Standard Guide for Repointing (Tuckpointing) Historic Masonry
• Effective Date: 10-Jun-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation:C780–02
Standard Test Method for
Preconstruction and Construction Evaluation of Mortars for
1
Plain and Reinforced Unit Masonry
This 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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
INTRODUCTION
This test method provides a standard procedure for sampling and testing mortars for composition
and plastic and hardened properties, either before or during actual construction. The procedures
outlined in the Annexes are considered applicable for evaluating various combinations of portland
cement, lime, and masonry cement for mortars common to plain and reinforced unit masonry
construction.
The test procedures describe methods for the measurement of mortar composition and mortar
properties. No attempt is made to claim or substantiate specific correlations between the measured
properties and mortar performance in the masonry. However, data from these test methods can be
combined with other information to formulate judgments about the quality of the masonry.
Testing using these procedures is limited to the preconstruction evaluation of masonry mortars
withinthelaboratory,totheevaluationofmasonrymortarsattheconstructionsite,andinestablishing
the degree of quality control exercised during mortar production at the construction site.
1. Scope* responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 Thistestmethodcoversproceduresforthesamplingand
bilityofregulatorylimitationspriortouse.Forspecifichazards
testing of mortars for composition and for their plastic and
statements, see Section 8.
hardened properties, either before or during their actual use in
construction.
2. Referenced Documents
1.2 Preconstruction Evaluation—This test method permits
2.1 ASTM Standards:
comparisons of mortars made from different materials under
C39 Test Method for Compressive Strength of Cylindrical
simulated field conditions. It is also used to establish baseline
2
Concrete Specimens
values for comparative evaluation of field mortars.
C109/C 109M Test Method for Compressive Strength of
1.3 Construction Evaluation—Use of this method in the
Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube
field provides a means for quality assurance of field-mixed
3
Specimens)
mortar. It includes methods for verifying the mortar mix
C128 Test Method for Density, Relative Density (Specific
proportions, comparing test results for field mortars to precon-
2
Gravity) and Absorption of Fine Aggregate
struction testing, and determining batch-to-batch uniformity of
C173 Test Method for Air Content of Freshly Mixed
the mortar.
2
Concrete by the Volumetric Method
1.4 The test results obtained under this test method are not
C187 Test Method for Normal Consistency of Hydraulic
required to meet the minimum compressive values in accor-
3
Cement
dance with the property specifications in Specification C270.
C231 Test Method for Air Content of Freshly Mixed
1.5 This standard does not purport to address all of the
2
Concrete by the Pressure Method
safety concerns, if any, associated with its use. It is the
4
C270 Specification for Mortar for Unit Masonry
C470 Specification for Molds for Forming Concrete Test
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC12onMortars
for Unit Masonry and is the direct responsibility of Subcommittee C12.02 on
2
Research and Methods of Test. Annual Book of ASTM Standards, Vol 04.02.
3
Current edition approved June 10, 2002. Published July 2002. Originally Annual Book of ASTM Standards, Vol 04.01.
4
published as C780–74. Last previous edition C780–00. Annual Book of ASTM Standards, Vol 04.05.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
C780–02
2
Cylinders Vertically batches are sampled and used in establishing the plastic and
C496 Test Method for Splitting Tensile Strength of Cylin- hardened properties of the mixtures. Because all the trial
2
drical Concrete Specimens
mixturesareprebatchedbyweight,additionalcharacteristicsof
C511 Specification for Moist Cabinets, Moist Rooms, and
themortarsmaybecalculatedandusedinananalysisofmortar
Water Storage Tanks Used in the Testing
...