DIN Standards Committee Materials Testing
Refractory test-piece preparation - Gunning refractory panels by the pneumatic-nozzle mixing type guns (ISO/DIS 20182:2023); German and English version prEN ISO 20182:2023
Abstract
his International Standard describes the procedure for the preparation of test panels from refractory materials by gunning through pneumatic nozzle mixing type guns at ambient temperatures. The test pieces are for the determination of properties on as-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 installation conditions. In this case, the panel is obtained during the on-site installation. Such parameters as ambient temperature, gunning elevation, air pressure and curing conditions (temperature, orientation of the panel) applying during the preparation of the panel are as near as possible to the same parameters pertaining to the site installation. This International Standard does not apply to plastic gunning mixes and might not apply to those mixes that contain aggregates that are susceptible to hydration. It also does not apply to shotcrete type mixes. (These are dealt with in ISO 18886, “Refractory test-piece preparation - Gunning refractory panels by wet gunning techniques.”).
Begin
2021-11-22
WI
00187152
Planned document number
DIN EN ISO 20182
Project number
06236253
Responsible national committee
NA 062-02-57 AA - Unshaped, dense shaped and insulating refractory products and materials
Responsible european committee
CEN/TC 187 - Refractory products and materials
Responsible international committee
ISO/TC 33/WG 25 - Refractory test piece preparation – Gunning techniques
draft standard
Refractory test-piece preparation - Gunning refractory panels by the pneumatic-nozzle mixing type guns (ISO/DIS 20182:2023); German and English version prEN ISO 20182:2023
2024-02
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