AS 1774.4.2-1992

1 - AS 1774.4.2-1992 REFRACTORIES AND REFRACTORY MATERIALS - PHYSICAL TEST METHODS - PREPARATION OF TEST PIECES - LOW-CEMENT CAS
1 - PREFACE
1 - CONTENTS
1 - METHOD
1 - 1 SCOPE
2 - 2 REFERENCED DOCUMENTS
2 - 3 DEFINITIONS
2 - 3.1 Low-cement castable
2 - 4 PRINCIPLE
2 - 5 SAFETY
2 - 6 APPARATUS
2 - 6.1 Mixer
2 - 6.2 Moulds
2 - 6.3 Immersion vibrator
2 - 6.4 Drying oven
2 - 6.5 Weighing scales
2 - 6.6 Riffle
2 - 6.7 Thermometer
2 - 6.8 Timing device
2 - 7 SAMPLING
2 - 8 PROCEDURE
2 - 8.1 Sample division
2 - 8.2 Mixing
3 - 8.3 Casting of test pieces
3 - 8.4 Curing and drying
3 - 9 REPORT
4 - APPENDIX A - METHOD FOR DETERMINING THE CONSISTENCY OF LOW-CEMENT CASTABLE REFRACTORIES
4 - A1 SCOPE
4 - A2 PRINCIPLE
4 - A3 APPARATUS
4 - A3.1 Balance
4 - A3.2 Riffle
4 - A3.3 Vibrating table
4 - A3.4 Mould
4 - A3.5 Callipers
4 - A3.6 Tamper
4 - A3.7 Trowel
4 - A3.8 Castable mixer
4 - A3.9 Thermometer
4 - A3.10 Timing device
4 - A4 PROCEDURE
4 - A4.1 Sample size division
4 - A4.2 Temperature measurement
4 - A4.3 Preparation of castable sample
4 - A4.4 Determination of flow
5 - A5 REPORT

Describes a procedure for laboratory preparation of test pieces from low-cement castable refractory materials. Does not apply to castable refractories intended primarily for gun manufacture.

This Standard describes a procedure for laboratory preparation of test pieces from low-cement castable refractory materials.NOTE: The values for physical properties obtained from test pieces prepared using this method may not correspond with those obtained from test pieces prepared using non-vibratory, or other vibratory, methods. Preparation of test pieces from regular castables is covered by AS 1774.4.1, and some low-cement castables have been prepared successfully by that method.This Standard does not apply to castable refractories intended primarily for gun application.This Standard does not apply to free-flowing, low-cement castables, from which test pieces can be prepared by pouring directly into a mould.

First published as AS 1774.4.2-1991.