ASTM D8058-25 PDF

Full title and description

Standard Test Method for Determining the Flexural Strength of a Geosynthetic Cementitious Composite Mat (GCCM) Using the Three-Point Bending Test (ASTM D8058-25). This test method specifies procedures for preparing cured GCCM specimens and measuring flexural strength using a three-point bending apparatus for manufacturing quality control and product characterization.

Abstract

ASTM D8058-25 defines a three-point bend test procedure to determine the flexural strength of geosynthetic cementitious composite mats (GCCMs) in the cured state. The method provides guidance on specimen preparation, test apparatus geometry, loading rate, and data reduction to produce repeatable index measurements useful for quality control and material characterization.

General information

• Status: Active / Current.
• Publication date: December 1, 2025 (designation D8058-25).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 59.080.70 — Geotextiles (geosynthetics / GCCM testing).
• Edition / version: D8058-25 (2025 edition).
• Number of pages: 8 pages.

Scope

This test method provides guidelines for determining the flexural strength of cured geosynthetic cementitious composite mats (GCCMs) using a three-point bending apparatus. It specifies specimen dimensions, support/span geometry, loading rate, required instrumentation, calculation of flexural strength, and reporting requirements. The method is intended as an index test suitable for manufacturing quality control and comparative characterization of GCCM products. Values are provided in SI units (inch-pound units in parentheses).

Key topics and requirements

• Definitions and scope for GCCM flexural testing using a three-point bend setup.
• Specimen preparation and curing conditions for representative cured-state testing.
• Test apparatus configuration: support span, loading nose geometry, and alignment requirements.
• Loading rate and data acquisition (constant-rate-of-extension displacement control recommended).
• Calculation and reporting of flexural strength (data reduction and presentation for MQC).
• Safety and handling notes: standard does not address all safety concerns; users must determine applicable safety practices prior to testing.

Typical use and users

Used by materials and quality-control laboratories, GCCM manufacturers, geosynthetic product specifiers, geotechnical and civil engineers, and research organizations to characterize flexural performance of cured GCCM products and to support manufacturing quality control and specification compliance. Accredited testing laboratories that serve geosynthetic product certification also apply this method.

Related standards

Commonly referenced or complementary standards include ASTM D8364/D8364M (Specification for Geosynthetic Cementitious Composite Mat (GCCM) Materials) and earlier or related ASTM test methods for geosynthetics and mechanical property characterization. D8058-25 follows the D8058 series of test methods and updates previous editions.

Keywords

GCCM, geosynthetic cementitious composite mat, flexural strength, three-point bending, bending test, MQC, geosynthetics, specimen curing, D8058-25.

FAQ

Q: What is this standard?

A: ASTM D8058-25 is a test method that specifies a three-point bending procedure to determine the flexural strength of cured geosynthetic cementitious composite mats (GCCMs).

Q: What does it cover?

A: It covers specimen preparation and curing, test apparatus setup (span and loading geometry), loading rate (constant-rate-of-extension), data acquisition, calculation of flexural strength, and reporting for use in product characterization and manufacturing quality control.

Q: Who typically uses it?

A: GCCM manufacturers, independent and accredited testing laboratories, geotechnical/civil engineers, product specifiers, and research organizations use the method to verify material properties and for quality control.

Q: Is it current or superseded?

A: As of its designation D8058-25, this is the current active edition (published December 1, 2025) and supersedes prior editions in the D8058 series. Users should confirm the edition required by contract or specification.

Q: Is it part of a series?

A: Yes — D8058-25 is part of the D8058 series of test methods for GCCM flexural testing and is related to ASTM specifications for GCCM materials such as D8364/D8364M.

Q: What are the key keywords?

A: Key terms include flexural strength, GCCM, three-point bend, geosynthetic, quality control, specimen curing, and D8058-25.