AS 1281-2001

1 - AS 1281-2001 CEMENT MORTAR LINING OF STEEL PIPES AND FITTINGS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Admixture
7 - 3.2 Centrifugal application
7 - 3.3 Curing
7 - 3.4 Curing compound
7 - 3.5 Fitting
8 - 3.6 Laitance
8 - 3.7 Lining
8 - 3.8 Mortar
8 - 3.9 Outside diameter
8 - 3.10 Seal coat
8 - 3.11 Spray application
8 - 4 MATERIALS
8 - 4.1 Aggregates
8 - 4.2 Cement
8 - 4.3 Water
9 - 4.4 Admixtures
9 - 4.5 Cement mortar
9 - 5 PROPORTIONING OF MATERIALS
9 - 5.1 Measurement and mixing of materials
9 - 5.2 Aggregate: cement ratio
9 - 5.3 Water:cement ratio
9 - 6 PREPARATION OF STEEL SURFACE
9 - 7 APPLICATION OF MORTAR
9 - 7.1 Method of application
10 - 7.2 Centrifugal application
10 - 7.3 Spray application
10 - 7.4 Hand application
10 - 7.4.1 General
10 - 7.4.2 Adhesion to steel and cured mortar
10 - 7.4.3 Water:Cement ratio
11 - 7.5 Reinforcement
11 - 8 THICKNESS OF LINING
11 - 9 SURFACE QUALITY/WORKMANSHIP
11 - 9.1 General
11 - 9.2 Defects
12 - 9.3 Repairs
12 - 10 CEMENT MORTAR ENDS
13 - 11 CURING OF LINING
13 - 11.1 Methods of curing
13 - 11.2 Water curing
13 - 11.3 Steam curing
15 - 12 APPLICATION OF CURING COMPOUNDS AND SEAL COATS
15 - 13 EFFECT OF CEMENT MORTAR LINING ON WATER QUALITY
15 - 14 HANDLING AND STORING OF PIPES
15 - 14.1 Lifting and handling
15 - 14.2 Storing and transporting
16 - APPENDIX A - PURCHASING GUIDELINES
16 - A1 GENERAL
16 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
16 - A3 MATTERS TO BE DECIDED BY AGREEMENT
16 - A4 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
17 - APPENDIX B - MEANS OF DEMONSTRATING COMPLIANCE WITH THIS STANDARD
17 - B1 SCOPE
17 - B2 RELEVANCE
17 - B3 DEFINITIONS
17 - B3.1 Acceptable quality level (AQL)
17 - B3.2 Batch
17 - B3.3 Batch release test (BRT)
17 - B3.4 Inspection level
17 - B3.5 Lot
17 - B3.6 Material batch
17 - B3.7 Production batch
17 - B3.8 Sample
18 - B3.9 Sampling plan
18 - B3.10 Type test (TT)
18 - B4 PRODUCT CERTIFICATION
18 - B5 MINIMUM SAMPLING AND TESTING FREQUENCY PLAN
18 - B5.1 General
18 - B5.2 Retesting
18 - B5.3 Rejection after retest
20 - APPENDIX C - TABLE OF NOMINAL SIZE AND CORRESPONDING OUTSIDE DIAMETER

Provides manufacturers, designers and purchasers of cement-mortar-lined steel pipes and fittings with a specification for their design and manufacture. This Standard applies to pipes of diameter 100mm or larger, for the conveyance of water intended for human consumption or for the conveyance of wastewater or process water. Guidelines on information to be supplied by the purchaser to the manufacturer and variations that should be agreed upon at the time of inquiry or order are provided. Methods for demonstrating compliance with this Standard are also provided.

This Standard specifies requirements for the cement mortar lining of steel pipes and fittings of 100 mm diameter and greater, by centrifugal, spray or hand application methods, prior to their installation in pipelines. These pipelines are used for the conveyance of water intended for human consumption or for the conveyance of wastewater or process water.NOTES: 1 Guidelines to purchasers on information that should be supplied by the purchaser and those variables that should or may be agreed upon at the time of enquiry or order are given in Appendix A.2 Alternative methods for demonstrating compliance with this Standard are given in Appendix B.

First published as AS C!41-1965.
Revised and redesignated as AS 1281-1972.
Second edition 1981.
Third edition 1993.
Fourth edition 2001.
Reconfirmed 2018. Originated as AS CA41-1965. Previous edition AS 1281-1993. Fourth edition 2001.