ISO 10545-11-1994 PDF

Full title and description

ISO 10545-11:1994 — Ceramic tiles — Part 11: Determination of crazing resistance for glazed tiles. Defines a standardized laboratory test method to assess the tendency of glazed ceramic tiles to develop fine surface cracks (crazing) under accelerated steam/thermal conditions, excluding tiles where crazing is an intended decorative effect.

Abstract

This part of ISO 10545 specifies a method to determine the crazing resistance of glazed ceramic tiles by subjecting specimens to elevated-steam/pressure conditions and then inspecting for glaze crazing (often using a staining technique to reveal hairline cracks). It is intended for quality control and conformity assessment of glazed tiles.

General information

• Status: Published (International Standard, confirmed in periodic review).
• Publication date: 11 August 1994 (Edition 1, 1994).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.100.23 (Ceramic tiles).
• Edition / version: Edition 1 (1994).
• Number of pages: 3 pages.

(General information above is taken from the ISO catalogue entry and recognized standards distributors.)

Scope

This part of ISO 10545 applies to all glazed ceramic tiles except when the formation of crazing is an inherent decorative feature of the product. It establishes the test principle, specimen preparation, exposure conditions (autoclave/steam), post-exposure staining/inspection and reporting requirements necessary to determine crazing resistance for conformity and quality-control purposes.

Key topics and requirements

• Purpose: assess resistance of glaze to microcracking (crazing) that affects appearance and durability.
• Test principle: exposure of whole tiles (or suitably large pieces) to high-pressure steam in an autoclave to accelerate conditions that produce crazing.
• Typical exposure conditions: autoclave steam/pressure cycling (commonly referenced values in related EN implementations: ~500 kPa / 159 °C for a specified period) followed by rapid depressurization to induce stress (see adopting body versions for national application).
• Detection: application of a staining agent (e.g., methylene blue or equivalent) and visual inspection under controlled lighting to reveal hairline glaze cracks.
• Specimens and acceptance reporting: defined minimum number of specimens, description of samples, number showing crazing, and photographic or descriptive evidence to support conformity decisions.
• Exclusions: tiles where crazing is an intended decorative effect are not assessed under this procedure.

Typical use and users

Used by ceramic tile manufacturers, independent testing laboratories, product conformity assessors, specification writers, architects and building product certifiers to verify glaze durability and aesthetic stability of glazed tiles before release or in dispute investigations. Laboratories offering tile testing commonly list this method among routine checks for glazed products.

Related standards

ISO 10545-11 is one part of the ISO 10545 series (tests for ceramic tiles). Related parts commonly referenced together include ISO 10545-2 (dimensions), -3 (water absorption), -4 (strength), -7 (abrasion), -9 (thermal shock), -13 (chemical resistance), and the broader product-standard ISO 13006 (definitions and classification). EN/ISO national adoptions (e.g., EN ISO 10545-11 / UNE-EN ISO 10545-11) implement the same method with national forewords where applicable.

Keywords

crazing; glazed ceramic tiles; crazing resistance; autoclave test; methylene blue stain; ISO 10545; tile test methods; tile quality control.

FAQ

Q: What is this standard?

A: ISO 10545-11:1994 is the International Standard specifying a laboratory method to determine the crazing resistance of glazed ceramic tiles.

Q: What does it cover?

A: It covers the scope, test principle (autoclave steam exposure), specimen handling, staining/inspection technique to reveal glaze crazing, and reporting for glazed tiles (excluding those with intentional crazing).

Q: Who typically uses it?

A: Tile manufacturers, independent testing labs, conformity assessment bodies, architects/specifiers and building product regulators use the method for QC, certification and specification compliance.

Q: Is it current or superseded?

A: The published 1994 edition (Edition 1) remains the ISO document for part 11; the ISO catalogue shows the publication as published and noted as confirmed during systematic reviews (periodic confirmation recorded). Users should verify if national adoptions or later related parts have updated requirements for national application.

Q: Is it part of a series?

A: Yes — ISO 10545 is a multipart series covering test methods for ceramic tiles; Part 11 is the crazing-resistance test and is normally used in conjunction with other parts of ISO 10545 and product standards such as ISO 13006.

Q: What are the key keywords?

A: Crazing, glaze, glazed tiles, autoclave, staining, methylene blue, tile testing, ISO 10545-11.