ISO 9863-1:2016/Amd 1:2019

Overview

ISO 9863-1:2016/Amd 1:2019 is an important amendment to the international standard for geosynthetics thickness determination at specified pressures. This document focuses on single-layer geosynthetics, providing updated guidance and refined procedures to ensure accurate measurement of material thickness under given pressure conditions. Developed by ISO Technical Committee ISO/TC 221, this amendment complements the second edition of ISO 9863-1 published in 2016 and was released in November 2019.

This amendment enhances clarity and precision in conditioning and testing methods, aligning with other international standards such as ISO 554 for conditioning environments. It is essential for manufacturers, testers, engineers, and quality assurance professionals working in civil engineering, construction, and environmental protection sectors to ensure reliable, standardized thickness measurements of geosynthetic materials.

Key Topics

• Thickness Measurement of Single-Layer Geosynthetics
  The standard defines methodologies for determining the thickness of geosynthetic single layers when subjected to specific controlled pressures-2 kPa, 20 kPa, and 200 kPa. This measurement is critical for characterizing performance and quality.

• Specimen Conditioning Requirements
  Specimens must be conditioned in accordance with ISO 554: Standard atmospheres for conditioning and/or testing, ensuring consistent environmental conditions (temperature and humidity) for accurate thickness results.

• Pressure Application Accuracy
  Amendment 1 revises the specified accuracy for applying test pressures, correcting references to enhance compliance and testing precision.

• Measurement Precision Updates
  Updates the precision requirements for thickness measurements, particularly for specimens ≤3 mm thick, ensuring data accuracy and repeatability.

• Standardization and Interoperability
  Emphasizes harmonization with existing ISO directives and complementary testing standards, facilitating international conformity and trade fairness.

Applications

ISO 9863-1:2016/Amd 1:2019 plays a crucial role in multiple industries and applications:

• Civil Engineering and Infrastructure
  Accurate thickness measurement of geosynthetics improves design reliability in road construction, embankments, dams, and retaining walls where these materials are employed for reinforcement, filtration, or separation.

• Environmental Engineering
  Ensures the functional performance of geosynthetic liners used in waste containment, landfills, and water reservoirs by verifying consistent material properties.

• Quality Control and Certification
  Manufacturers and testing laboratories use this standard for quality assurance, validating product specifications, and meeting regulatory requirements.

• Research and Development
  Provides a reliable baseline procedure for evaluating innovative geosynthetic materials under different load conditions to improve product development.

Related Standards

This amendment integrates with and complements several key ISO and international standards:

• ISO 9863 Series
  The broader ISO 9863 standard series covers methods for thickness determination of multilayer geosynthetics and composite products.

• ISO 554
  Specifies standard atmospheres for conditioning and testing of specimens. Compliance ensures uniform environmental conditions for measurement reliability.

• ISO/IEC Directives Part 1 & 2
  Outlines the editorial and procedural rules for preparing and maintaining ISO documents, under which this amendment was drafted.

• Other Geosynthetics Standards
  Related standards within ISO/TC 221 address properties like tensile strength, permeability, and durability of geosynthetic materials.

Keywords: ISO 9863-1 amendment, geosynthetics thickness measurement, single-layer geosynthetics, specimen conditioning ISO 554, geosynthetic testing standards, civil engineering materials, environmental engineering, geosynthetic quality control, international standards geotextiles, thickness at specified pressure