ASTM C62-23 PDF

Overview

ASTM C62-23 is the standard specification set by ASTM International for building brick, specifically solid masonry units manufactured from clay, shale, or similar naturally occurring materials. This standard details the minimum requirements for bricks intended for use in structural and nonstructural masonry where external appearance is not a primary concern. ASTM C62-23 applies to building bricks that are prismatic and made by molding, pressing, or extrusion, ensuring the fired material achieves vital strength and durability for construction applications.

The specification emphasizes the physical properties, quality control, and classification of bricks according to their resistance to freezing and thawing, making it a cornerstone reference for construction professionals, architects, and manufacturers working with solid masonry units.

Key Topics

• Scope and Limitations: Defines bricks covered by the standard, excluding facing and paving bricks. Emphasizes that ASTM C62-23 applies where appearance is secondary to function.
• Material and Manufacturing: Covers bricks made primarily from clay or shale, with provisions for the inclusion of additives or recycled materials at the manufacturer’s discretion.
• Grades of Building Brick:
  • Grade SW (Severe Weathering): High resistance to cyclic freezing and thawing, suitable for demanding climates and exposures.
  • Grade MW (Moderate Weathering): Moderate resistance, recommended where occasional freeze-thaw cycles occur.
  • Grade NW (Negligible Weathering): Minimal resistance, suitable for protected or indoor applications.
• Physical Requirements: Includes minimum compressive strength, maximum water absorption, and dimensional tolerances. Also addresses alternatives for absorption and freezing/thawing tests.
• Sampling and Testing: References ASTM C67 for standard test methods regarding sampling, compressive strength, and water absorption.
• Coring and Frogging: Outlines requirements for cored or frogged bricks, with specific provisions for structural integrity.
• Order Information: Provides guidelines for specifying grade, size, sampling, and optional properties during procurement.

Applications

ASTM C62-23 is widely used in the construction sector for specifying the requirements and acceptance criteria of building bricks in masonry projects. Key practical applications include:

• Structural Masonry Walls: Ensuring bricks meet strength and durability standards required for load-bearing walls.
• Nonstructural Partitioning: Providing reliable material standards for interior and non-load-bearing partitions.
• Below-Grade and Foundation Work: Recommending grades for exposure to moisture and freeze/thaw conditions typically found in foundation and retaining walls.
• General Construction: Facilitating the consistent procurement, quality control, and installation of bricks across projects where appearance is not critical.

By following ASTM C62-23, contractors and manufacturers can ensure that building bricks are suitable for their intended use, especially in environments prone to harsh weather conditions.

Related Standards

• ASTM C216: Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale) - for projects requiring specific aesthetic or surface quality.
• ASTM C902: Specification for Pedestrian and Light Traffic Paving Brick - for pavers subjected to lighter loads.
• ASTM C1272: Specification for Heavy Vehicular Paving Brick - for pavers in heavy-duty applications.
• ASTM C67: Test Methods for Sampling and Testing Brick and Structural Clay Tile - provides detailed procedures for evaluating brick properties.
• ASTM C1232: Terminology for Masonry - offers definitions to ensure consistency across masonry standards.

Keywords: building brick, ASTM C62, solid masonry units, clay brick specification, shale brick, masonry standards, brick grades, compressive strength, water absorption, freezing and thawing resistance, construction materials, ASTM International.