81.080 - Refractories

This European standard describes three methods for the determination of the permanent change in dimensions on heating of dense shaped refractory products.

This document specifies the principle, equipment, test pieces, procedures, result expression and test report of test methods for thermal shock resistance of refractories. Three test methods are included in this document. Each one is applicable to a different product type and their test results are not comparable. The test method, the test temperature and the test condition are intended to be negotiated by corresponding parties. This document does not purport to address all of the safety concerns...view more

This document specifies a method for determining the dynamic Young's modulus of rectangular cross-section bars and circular cross-section specimens of refractories by impulse excitation of vibration at elevated temperature. The dynamic Young's modulus is determined using the resonant frequency of the specimen in its flexural mode of vibration. This document does not address the safety issues associated with its use. It is responsibility of the users of this standard to establish appropriate safe...view more

This Part of EN 993 specifies a method of determination of the cold crushing strength of dense shaped refractory products.

This Part of EN 993 specifies a method for the determination of the bulk density, apparent porosity and true porosity of dense shaped refractory products.
NOTE   For shaped insulating refractory products, the bulk density and true porosity are determined in accordance with EN 1094-4.

This Part of EN 993 specifies a method for the determination of the modulus of rupture of dense and insulating shaped refractory products at ambient temperature, under conditions of a constant rate of increase of stress.

This Part of EN 993 specifies a method for the determination of the modulus of rupture of dense and insulating shaped refractory products at ambient temperature, under conditions of a constant rate of increase of stress.

This document specifies a method for the determination of the bulk density, apparent porosity and true porosity of dense shaped refractory products.
NOTE   For shaped insulating refractory products, the bulk density and true porosity are determined in accordance with EN 1094-4.

This document specifies a method of determination of the cold crushing strength of dense shaped refractory products.

This document specifies requirements for the preparation of fused beads for the chemical analysis of silicon carbide containing samples using X-ray fluorescence (XRF). The test methods described in this document are for silicon carbide and silicon carbide materials; however, the principles described can be applied to other reduced materials such as boron carbide, boron nitride, ferroalloys, sialons and silicon nitride using the modifications given in Annex A. Fused cast beads of the samples prep...view more

ISO 18886:2016 specifies the procedures for the preparation of test pieces from refractory materials by wet gunning at ambient temperatures. The test pieces are for the determination of properties on wet-gunned products prepared under either "standard conditions" (as required for quality assurance or product development) or "site conditions". In the case of "site conditions", the purpose of the testing is to establish the properties pertaining to a given installation or a given set of installati...view more

ISO 22016:2015 specifies methods for the wet chemical analysis of refractory products and their raw materials with below 5 % (mass percentage) sulfur.

ISO 16349:2015 specifies a method for determination of abrasion resistance of shaped and unshaped refractory materials at elevated temperature. The test temperature is not intended to exceed 1 300 °C.

EN ISO 10081-4 specifies the classification and designation of dense shaped refractory products of special composition including a) oxide products, b) oxide and non-oxide products, c) non-oxide silicon carbide or carbon-based products, and d) further special products which are only designated but not classified, for example, non-oxide products, such as boride, nitride or further combinations of the series listed above.

ISO 10081-4:2014 specifies the classification and designation of dense shaped refractory products of special composition including oxide products, oxide and non-oxide products, non-oxide silicon carbide or carbon-based products, and further special products which are only designated but not classified, for example non-oxide products, such as boride, nitride or further combinations of the series given above.

ISO 10081-4:2014 specifies the classification and designation of dense shaped refractory products of special composition including oxide products, oxide and non-oxide products, non-oxide silicon carbide or carbon-based products, and further special products which are only designated but not classified, for example non-oxide products, such as boride, nitride or further combinations of the series given above.

ISO 16835:2014 specifies test methods for the thermal expansion of refractory products. It describes a method for determining the linear thermal expansion percentage, the linear thermal expansion curve, and the linear thermal expansion coefficient. ISO 16835:2014 includes the following three test methods for the thermal expansion of refractory products: a) a contact method with a cylindrical test piece; b) a contact method with a rod test piece; c) a non-contact method.

This part of this International Standard gives guidance on the sampling of unshaped refractory materials for the purpose of inspection and testing for quality and general information on the reduction and treatment of samples prior to testing. It covers all materials formulated as unshaped refractory materials.

This part of ISO 1927 specifies the methods for the characterization of monolithic (unshaped) refractory materials as received and for checking the homogeneity of a delivery of a product. It is applicable to castables (dense and insulating), gunning materials tap hole clay, injection mixes, dry vibrating mixes, and ramming materials, as defined in ISO 1927-1.

This part of ISO 1927 describes methods for the determination and measurement of the consistency of dense and insulating castables as defined in ISO 1927-1. It is applicable to all types of dense regular castables, dense deflocculated castables and insulating castables to determine the liquid addition necessary for preparing test pieces according to ISO 1927-5.