ISO 3340:1976 PDF
Fibre building boards — Determination of sand content
Fibre building boards — Determination of sand content
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 1 апреля 1976 г.
- Издание:
- ISO IS 3340 edition 1 version 1
- ICS:
- 79.060.20
The purpose of the method specified is to obtain an indication of machinability by cutting tools. The principle is based on the complete combustion of test pieces and weighing the sand remaining in the desiccator at the end of the procedure. The tubular hearth used to ignite the test pieces is shown in the figure.
Abstract
Overview
ISO 3340:1976 defines a laboratory method to determine the sand content of hard and medium fibre building boards. The measured sand content provides an indication of the board's machinability by cutting tools and helps anticipate tool wear and quality issues. The method is based on complete combustion of representative test pieces, collection of ash and residual siliceous particles, acid cleaning and filtration, followed by drying and weighing of the retained sand.
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