ASTM C1877-24 PDF

Overview

ASTM C1877-24: Standard Specification for Adhered Concrete Masonry Units establishes minimum requirements for solid, dry-cast concrete masonry units specifically designed for use as interior or exterior adhered veneer. These units are manufactured from portland cement, water, and appropriate mineral aggregates, with the possible inclusion of other suitable materials. The standard defines physical properties, tolerances, appearance, and testing methods, offering guidance for both manufacturers and purchasers of adhered concrete masonry units. Developed in accordance with international standardization principles, ASTM C1877-24 ensures product performance, consistency, and compatibility in diverse construction applications.

Key Topics

• Material Requirements
  • Units must be made primarily from portland cement, water, and suitable mineral aggregates
  • Allowances for blended cements and supplementary cementitious materials following referenced ASTM specifications
  • Use of both lightweight and normal weight aggregates, with grading modifications permitted for unit production
• Physical Properties & Tolerances
  • Requirements for compressive strength, density classification, maximum water absorption, and linear drying shrinkage
  • Dimensional tolerances to ensure consistency, including limits on thickness, face dimensions, and maximum weight per area
  • Surface finish and appearance guidelines, with limits on chipping, cracking, and other imperfections for visible surfaces
• Sampling & Testing Methods
  • Concrete masonry units must be tested for strength, absorption, density, and shrinkage using recognized ASTM test methods
  • Sampling procedures outlined to ensure representative evaluation of production lots
• Compliance & Acceptance
  • Criteria for acceptance and rejection of units based on appearance and measured physical properties
  • Guidelines for handling nonconforming units, retesting, and responsibility for testing costs

Applications

Adhered concrete masonry units specified under ASTM C1877-24 are widely used in contemporary construction as nonloadbearing veneer for both interior and exterior applications:

• Building Facades & Cladding: Offers architects and builders flexibility in design, with a variety of finishes and textures while maintaining durability and strength standards.
• Interior Walls & Architectural Features: Used for accent walls, fireplace surrounds, and other decorative elements where a masonry aesthetic is desired but structural capacity is not required.
• Renovation & Retrofitting: Ideal for upgrading existing structures, providing a cost-effective solution for enhancing appearance and weather protection.
• Commercial & Residential Construction: Suitable for new builds or remodeling projects in commercial complexes, residential homes, institutional buildings, and public spaces.

Adhered veneer installations can specify additional properties such as fire resistance, insulation, acoustical performance, and color or texture customization. Purchasers are encouraged to consult suppliers for the availability of specific features to ensure units meet the desired functional and aesthetic requirements.

Related Standards

ASTM C1877-24 references several important ASTM standards for materials and testing:

• ASTM C33/C33M - Specification for Concrete Aggregates
• ASTM C140/C140M - Test Methods for Sampling and Testing Concrete Masonry Units
• ASTM C150/C150M - Specification for Portland Cement
• ASTM C331/C331M - Specification for Lightweight Aggregates for Concrete Masonry Units
• ASTM C426 - Test Method for Linear Drying Shrinkage of Concrete Masonry Units
• ASTM C595/C595M - Specification for Blended Hydraulic Cements
• ASTM C618 - Specification for Pozzolanic Materials
• ASTM C979/C979M - Specification for Pigments for Integrally Colored Concrete
• ASTM C989/C989M - Specification for Slag Cement
• ASTM C1157/C1157M - Performance Specification for Hydraulic Cement
• ASTM C1232 - Terminology for Masonry
• ASTM C1240 - Specification for Silica Fume
• ASTM C1670/C1670M - Specification for Adhered Manufactured Stone Masonry Veneer Units

These related documents provide material specifications, terminology, and test methods that help ensure the quality and performance of adhered concrete masonry units in adherence with ASTM C1877-24.

Keywords: adhered concrete masonry units, ASTM C1877-24, concrete veneer, building standards, masonry unit testing, construction materials specifications, architectural veneer, facade cladding, ASTM masonry standards