AS 1774.7-2001

1 - AS 1774.7-2001 REFRACTORIES AND REFRACTORY MATERIALS-PHYSICAL TEST METHODS - PERMEABILITY TO GASES
1 - PREFACE
1 - METHOD
1 - 1 SCOPE
1 - 2 REFERENCED DOCUMENTS
1 - 3 DEFINITIONS
1 - 4 PRINCIPLE
2 - 5 SAFETY
2 - 6 APPARATUS
2 - 6.1 General
2 - 6.2 Test apparatus
2 - 6.2.1 Air supply
2 - 6.2.2 Vacuum source
2 - 6.2.3 Air flow measurement equipment
2 - 6.2.4 Water manometer
2 - 6.2.5 Test piece holder (see Figure 4)
3 - 6.3 Drying oven
3 - 6.4 Vernier callipers
3 - 7 PREPARATION OF TEST PIECES
5 - 8 PROCEDURE
6 - 9 CALCULATION OF RESULTS
7 - 10 PRECISION DATA
7 - 11 TEST REPORT

Sets out a method for determining the permeability to gases of dense, shaped refractory products.

This Standard specifies a method for determining the permeability to gases of dense, shaped refractory products. The determination is normally made using air as the gas.The method is suitable for materials having a permeability of greater than 1 ´ 10-14 m2 and less than 20 ´10-12 m2.

First published as AS R31.7-1966.
Revised and redesignated as AS 1774.7-1991.
Second edition 2001.