ASTM D43/D43M-00(2024)

Overview

ASTM D43/D43M-00(2024) is the globally recognized standard specification for coal tar primer used in roofing, dampproofing, and waterproofing applications. Developed by ASTM International, this standard outlines the essential quality and performance requirements for coal tar primer applied to concrete, masonry, and coal tar surfaces, both above and below ground. The specification ensures that products meet strict criteria for physical properties, testing methods, and packaging, supporting the integrity and longevity of building protection systems.

Key Topics

• Scope and Applicability

  • Covers requirements for coal tar primer suitable for use with coal tar pitch in various weatherproofing applications.
  • Applicable for surfaces including concrete, masonry, and coal tar.

• Physical Property Requirements

  • Water content: Not more than 1%
  • Consistency: Must remain fluid and crystal-free at 5°C (41°F)
  • Specific gravity: Not less than 1.06 at 38/15.5°C (100/60°F)
  • Matter insoluble in benzene: Not more than 0.5%
  • Distillation: Controlled fractions at specified temperatures
  • Coke residue: Not more than 2%

• Test Methods

  • Sampling in compliance with ASTM D140/D140M.
  • Determination of physical properties via referenced ASTM standards.
  • Use of standard tables for volume and specific gravity correction.

• Packaging and Marking

  • Packaging must conform to applicable regulations.
  • Each package should be clearly marked with ASTM designation, manufacturer information, and net contents.

• Inspection and Rejection

  • Inspection procedures to be agreed on between supplier and purchaser.
  • Non-conforming material may be rejected and resubmitted after correction.

Applications

Coal tar primer covered by ASTM D43/D43M is a foundational material in the following construction and maintenance applications:

• Roofing Systems
  • Serves as a primer for coal tar pitch in built-up roofing assemblies to enhance adhesion and durability.
• Dampproofing
  • Applied to concrete and masonry foundations for protection against moisture ingress above or below ground.
• Waterproofing
  • Integral to waterproofing systems for tunnels, basements, and other critical infrastructure, providing a reliable barrier to water penetration.
• Repair and Maintenance
  • Used in the restoration of existing coal tar-based installations to maintain performance and longevity.

Adherence to this standard ensures that coal tar primers are fit for purpose, minimize risks of system failure, and comply with regulatory requirements, making it central to projects where long-term waterproofing and dampproofing are priorities.

Related Standards

Professionals referencing ASTM D43/D43M may also find the following standards relevant:

• ASTM D140/D140M - Practice for Sampling Asphalt Materials
• ASTM D168 - Test Method for Coke Residue of Creosote (Withdrawn)
• ASTM D246 - Test Method for Distillation of Creosote and Creosote-Coal Tar Solutions (Withdrawn)
• ASTM D347 - Tables for Volume and Specific Gravity Correction (Withdrawn)
• ASTM D367 - Test Method for Xylene-Insoluble Matter in Creosote (Withdrawn)
• ASTM D368 - Test Method for Specific Gravity of Creosote and Oil-Type Preservatives (Withdrawn)
• ASTM D370 - Practice for Dehydration of Oil-Type Preservatives

Aligning with these related ASTM standards helps ensure comprehensive quality control across roofing, dampproofing, and waterproofing projects, and supports compliance with international best practices.

Keywords: coal tar primer, ASTM D43, roofing, waterproofing, dampproofing, concrete protection, masonry protection, construction standards, material specification