ASTM RR-C24-1055 2005 PDF

Full title and description

St ASTM RR‑C24‑1055 (2005) — Research Report establishing precision statements for ASTM C1635: "Test Method to Evaluate Adhesion/Cohesion Properties of a Sealant at Fixed Extension." The report documents the interlaboratory studies used to produce precision and repeatability statements for the C1635 test method.

Abstract

This research report (RR:C24‑1055), approved March 24, 2005, describes two interlaboratory studies used to develop precision (repeatability and reproducibility) statements for ASTM C1635. The first study involved five laboratories and five sealant formulations; a second study involved five laboratories and two sealants. The report provides the data, statistical analyses, and resulting precision statements that support reliable use of C1635 in quality control and comparative testing.

General information

• Status: Research Report associated with ASTM C1635 (report approved Mar 24, 2005); used to define precision statements for the test method.
• Publication date: 2005 (Research Report approved March 24, 2005).
• Publisher: ASTM International (Committee C24, Subcommittee C24.30).
• ICS / categories: ICS 21.140 (seals, glands / building jointing products).
• Edition / version: RR:C24‑1055 (2005) — research report supporting ASTM C1635.
• Number of pages: Report page count not specified in the ASTM product listing; the associated C1635 standard is 3 pages (standard text).

Scope

RR:C24‑1055 provides the interlaboratory data and statistical analyses that establish precision statements for ASTM C1635. ASTM C1635 itself is a laboratory test method that measures adhesion and cohesion properties of sealants held at a specified tensile strain, evaluating performance before, during, and after water immersion. The research report documents test samples, laboratory procedures used in the round‑robin studies, and the calculated repeatability and reproducibility for key result metrics.

Key topics and requirements

• Interlaboratory studies (round‑robin testing) used to derive precision statements for ASTM C1635.
• Measurement of adhesion and cohesion of sealants under a fixed extension (specified tensile strain), including before, during, and after water immersion.
• Default specimen/joint configuration and reference to movement classes in Specification C920 (used to define test strain).
• Statistical analysis methods for repeatability and reproducibility reporting (precision statements).
• Comparison and alignment with comparable ISO test methods (ISO 10590 and ISO 8340).

Typical use and users

Primary users include independent materials/testing laboratories, sealant manufacturers and R&D teams, quality control personnel in construction and glazing industries, specification authors, and standards committees. The report is used when applying ASTM C1635 to verify test method precision, to interpret variability in test results, and to support specification limits or acceptance criteria.

Related standards

Directly associated standard: ASTM C1635 (Test Method to Evaluate Adhesion/Cohesion Properties of a Sealant at Fixed Extension). Related specifications and tests referenced in C1635 include ASTM C920 (sealant specification) and comparable ISO methods ISO 10590 and ISO 8340. Other ASTM C24 committee methods (adhesion, weathering, tensile/peel tests) are related for broader sealant performance evaluation.

Keywords

ASTM RR:C24‑1055, C1635, sealant testing, adhesion, cohesion, fixed extension, precision statement, interlaboratory study, repeatability, reproducibility, water immersion, C24.30.

FAQ

Q: What is this standard?

A: RR:C24‑1055 is an ASTM research report (2005) that documents the interlaboratory studies and statistical analyses used to develop precision (repeatability and reproducibility) statements for the ASTM test method C1635. It is a supporting research document rather than the normative test method itself.

Q: What does it cover?

A: It covers the design, execution, and analysis of round‑robin (interlaboratory) testing of sealants subjected to a fixed tensile extension; the report presents the raw data and statistical treatment that yield precision statements for results obtained using ASTM C1635 (adhesion/cohesion before, during, and after immersion).

Q: Who typically uses it?

A: Testing laboratories, sealant manufacturers, quality assurance/test engineers, standards committees, and specifiers who need to understand the expected variability of C1635 test results or to justify acceptance criteria and interlaboratory comparability.

Q: Is it current or superseded?

A: The research report itself was approved in 2005 (RR:C24‑1055) and remains the supporting precision document for C1635. The C1635 test method has more recent active editions (for example, C1635‑22 is listed as active with a 2022 update); users should reference the current C1635 edition for the normative test procedure while using RR:C24‑1055 for the original precision statements.

Q: Is it part of a series?

A: Yes — RR:C24‑1055 is one of several research reports produced by ASTM Committee C24 (sealants and adhesives) to provide precision and interlaboratory data for C24 test methods. ASTM maintains multiple RR:C24‑10xx reports that support other C24 standards.

Q: What are the key keywords?

A: Adhesion, cohesion, sealant, fixed extension, precision statement, interlaboratory study, repeatability, reproducibility, ASTM C1635, RR:C24‑1055.