Need help? Chat now
Cart (0)
Search book title
Enter keywords for book title search
Search book content
Enter keywords for book content search
 Admin Code
 CADD File
 City Code
 Comprehensive Plan
 Conference Paper
 County Code
 Course & CEU
 DHS Documents
 Executive Regulation
 Federal Guideline
 Firm Content
 Land Use and Development
 Legislative Rule
 Local Amendment
 Local Code
 Local Document
 Local Regulation
 Local Standards
 Model Code
 Model Standard
 Rules & Regulations
 State Amendment
 State Code
 State Manual
 State Plan
 State Standards
 Study Guide
 Technical Bulletin
  • ASTM
    C270-05a Standard Specification for Mortar for Unit Masonry
    Edition: 2005
    Unlimited Users - 1 Loc per year

Description of ASTM-C270 2005

ASTM C270-05a

Historical Standard: ASTM C270-05a Standard Specification for Mortar for Unit Masonry

SUPERSEDED (see Active link, below)


1. Scope

1.1 This specification covers mortars for use in the construction of non-reinforced and reinforced unit masonry structures. Four types of mortar are covered in each of two alternative specifications: ( 1 ) proportion specifications and ( 2 ) property specifications.

Note 1When the property specification is used to qualify masonry mortars, the testing laboratory performing the test methods should be accredited in accordance with Practice C 1093.

1.2 The proportion or property specifications shall govern as specified.

1.3 When neither proportion or property specifications are specified, the proportion specifications shall govern, unless data are presented to and accepted by the specifier to show that mortar meets the requirements of the property specifications.

1.4 The text of this standard references 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.

1.5 The terms used in this standard are identified in Terminologies C 1180 and C 1232.

1.6 The following safety hazards caveat pertains only to the test methods section 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C5 Specification for Quicklime for Structural Purposes

C91 Specification for Masonry Cement

C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)

C110 Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone

C128 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate

C144 Specification for Aggregate for Masonry Mortar

C150 Specification for Portland Cement

C188 Test Method for Density of Hydraulic Cement

C207 Specification for Hydrated Lime for Masonry Purposes

C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency

C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes

C595 Specification for Blended Hydraulic Cements

C780 Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry

C952 Test Method for Bond Strength of Mortar to Masonry Units

C979 Specification for Pigments for Integrally Colored Concrete

C1072 Test Methods for Measurement of Masonry Flexural Bond Strength

C1093 Practice for Accreditation of Testing Agencies for Masonry

C1157 Performance Specification for Hydraulic Cement

C1180 Terminology of Mortar and Grout for Unit Masonry

C1232 Terminology of Masonry

C1324 Test Method for Examination and Analysis of Hardened Masonry Mortar

C1329 Specification for Mortar Cement

C1384 Specification for Admixtures for Masonry Mortars

C1489 Specification for Lime Putty for Structural Purposes

C1506 Test Method for Water Retention of Hydraulic Cement-Based Mortars and Plasters

C1586 Guide for Quality Assurance of Mortars

E72 Test Methods of Conducting Strength Tests of Panels for Building Construction

E514 Test Method for Water Penetration and Leakage Through Masonry

E518 Test Methods for Flexural Bond Strength of Masonry

Masonry Industry Council

HotandColdWeatherMas January 1999


air content; compressive strength; masonry; masonry cement; mortar; portland cement-lime; water retention; water retentivity;

ICS Code

ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

DOI: 10.1520/C0270-05A

ASTM International is a member of CrossRef.

Customers who bought this book also bought...

Format Year Publisher Type Title Annual Price
Model Standard
$50.00 Buy

This book also exists in the following packages...

Year Publisher Title Annual Price
[+] $2,632.00 Buy
[+] $7,022.00 Buy
[+] $5,658.00 Buy
[+] $700.00 Buy
[+] $7,430.00 Buy
[+] $834.00 Buy
[+] $4,297.00 Buy

Subscription Information ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at or +1 800.798.9296.


Some features of ASTM Standards Subscriptions are:

- Online access: With’ s web based subscription service no downloads or installations are required. Access ASTM Standards from any browser on your computer, tablet or smart phone.

- Immediate Access: As soon as the transaction is completed, your ASTM Standards Subscription will be ready for access.


For any further information on ASTM Standards Subscriptions, please contact us at or +1 800.798.9296.


About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.