AS 1379-1997

1 - AS 1379-1997 SPECIFICATION AND SUPPLY OF CONCRETE
4 - PREFACE
6 - CONTENTS
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 REFERENCED DOCUMENTS
9 - 1.3 OTHER MATERIALS, PLANT OR METHODS
9 - 1.4 DEFINITIONS
11 - 1.5 NOTATION
12 - 1.6 SPECIFICATION OF CONCRETE
12 - 1.6.1 General
12 - 1.6.2 Standard strength grades
12 - 1.6.3 Normal-class concrete
13 - 1.6.4 Special-class concrete
13 - 1.7 METHODS OF ORDERING
14 - 1.8 BASIS OF SUPPLY
14 - 1.8.1 General
14 - 1.8.2 Volume of plastic concrete
14 - 1.8.3 Identification certificate
15 - SECTION 2 CONCRETE MATERIALS AND CONSTITUENT LIMITATIONS
15 - 2.1 GENERAL
15 - 2.2 CEMENT CONSTITUENTS
15 - 2.2.1 Portland cement
15 - 2.2.2 Blended cement
15 - 2.2.3 Fly ash
15 - 2.2.4 Ground slag
15 - 2.2.5 Silica fume
15 - 2.3 AGGREGATES
15 - 2.4 MIXING WATER
15 - 2.5 CHEMICAL ADMIXTURES
16 - 2.6 BULK STORAGE OF MATERIALS
16 - 2.6.1 Cement constituents
16 - 2.6.2 Aggregates
16 - 2.6.3 Water
16 - 2.6.4 Chemical admixtures
16 - 2.7 LIMITATIONS ON CHEMICAL CONTENT OF CONCRETE
16 - 2.7.1 Chloride content
16 - 2.7.2 Sulfate content
17 - SECTION 3 PLANT AND EQUIPMENT
17 - 3.1 BINS AND SILOS
17 - 3.1.1 General
17 - 3.1.2 Cement bins or silos
17 - 3.1.3 Aggregate bins
17 - 3.2 WEIGHING EQUIPMENT
17 - 3.2.1 Indicating devices
17 - 3.2.2 Accuracy
17 - 3.2.3 Weigh-hoppers
17 - 3.2.4 Continuous feed weighers
18 - 3.3 LIQUID DISPENSING EQUIPMENT
18 - 3.3.1 Indicating devices
18 - 3.3.2 Accuracy of metering
18 - 3.3.3 Maintenance
18 - 3.4 MIXERS
18 - 3.4.1 General
19 - 3.4.2 Batch mixers
20 - 3.4.3 Continuous mixers
21 - SECTION 4 PRODUCTION AND DELIVERY
21 - 4.1 GENERAL
21 - 4.1.1 Production processes
21 - 4.1.2 Method of measuring quantities of ingredients
21 - 4.1.3 Bases for determinations of mass
21 - 4.1.4 Method of batching ingredients
21 - 4.1.5 Sequence of introduction of materials
21 - 4.1.6 Records
21 - 4.2 BATCH PRODUCTION
21 - 4.2.1 Tolerances on batch ingredients
22 - 4.2.2 Batch mixing
23 - 4.2.3 Addition of water or admixtures to a mixed batch
24 - 4.2.4 Period for completion of discharge
24 - 4.3 CONTINUOUS PRODUCTION
24 - 4.3.1 Batching
24 - 4.3.2 Mixing
24 - 4.4 DELIVERY
24 - 4.4.1 General
24 - 4.4.2 Temperature at point of delivery
24 - 4.4.3 Duration of delivery
25 - SECTION 5 SAMPLING AND TESTING OF CONCRETE
25 - 5.1 GENERAL
25 - 5.1.1 Sampling and testing
25 - 5.1.2 Grouping of plants
25 - 5.1.3 Customer access
25 - 5.2 SLUMP
25 - 5.2.1 Frequency of testing
25 - 5.2.2 Determination of slump
26 - 5.2.3 Compliance
26 - 5.2.4 Repeat tests for slump
26 - 5.3 STRENGTH
26 - 5.3.1 28-day characteristic strength
26 - 5.3.2 Strength other than 28-day characteristic strength
27 - 5.3.3 Compliance
27 - 5.3.4 Action to be taken on noncompliance
27 - 5.4 AIR CONTENT
27 - 5.4.1 Frequency of sampling
27 - 5.4.2 Determination of air content
27 - 5.4.3 Compliance
27 - 5.4.4 Repeat tests for air content
28 - 5.5 CHLORIDE AND SULFATE CONTENT
28 - 5.5.1 Frequency of sampling
28 - 5.5.2 Determination of content
28 - 5.5.3 Compliance
28 - 5.6 DRYING SHRINKAGE
28 - 5.6.1 Drying shrinkage of normal-class concrete
28 - 5.6.2 Drying shrinkage of special-class concrete
29 - 5.7 7-DAY STRENGTH OF NORMAL-CLASS CONCRETE
29 - 5.8 OTHER PARAMETERS
30 - SECTION 6 SAMPLING, TESTING AND ASSESSMENT FOR COMPLIANCE OF CONCRETE SPECIFIED BY COMPRESSIVE STRENGTH
30 - 6.1 GENERAL REQUIREMENTS
30 - 6.2 SAMPLING AND TESTING
30 - 6.2.1 General
30 - 6.2.2 Sampling
30 - 6.2.3 Making and curing of cylinder specimens
30 - 6.2.4 Testing of cylinder specimens
30 - 6.2.5 Test strength of samples
31 - 6.3 PRODUCTION ASSESSMENT
31 - 6.3.1 Basic requirements of production control
31 - 6.3.2 Grade being assessed
32 - 6.3.3 Sampling frequency
32 - 6.3.4 Production interval
32 - 6.3.5 Standard deviation
33 - 6.3.6 Grouping of plants to determine and nc and s
33 - 6.3.7 Action on noncompliance
34 - 6.3.8 Early age assessment of controlled grades
34 - 6.4 RECORDING AND DISSEMINATION OF PRODUCTION ASSESSMENT INFORMATION
34 - 6.4.1 Records and reports of test results
34 - 6.4.2 Reports for production assessment
34 - 6.4.3 Dissemination of production assessment information
34 - 6.4.4 Notification of potentially low strength
35 - 6.5 PROJECT ASSESSMENT OF STRENGTH GRADE
35 - 6.5.1 General
35 - 6.5.2 Project assessment for plants subject to production assessment
35 - 6.6 ASSESSMENT BY ALTERNATIVE METHODS WITH AN ACCEPTED OPERATING CHARACTERISTIC
36 - APPENDIX A - UNIFORMITY OF MIXING
36 - A1 GENERAL
36 - A2 TEST PROCEDURES
36 - A2.1 Mix used for uniformity tests
36 - A2.2 Batch mixers
36 - A2.3 Continuous mixers
36 - A2.4 Sampling procedures
37 - A3 DETERMINATION OF PROPERTIES OF PLASTIC CONCRETE SAMPLES
37 - A3.1 General
37 - A3.2 Slump
37 - A3.3 Air content
37 - A3.4 Mass per unit volume of the concrete
37 - A3.5 Coarse aggregate content
37 - A3.6 Mass per unit volume of the air-free mortar
37 - A4 COMPLIANCE WITH UNIFORMITY
39 - APPENDIX B - GUIDE TO THE SPECIFICATION OF SPECIAL-CLASS CONCRETE

Proposes requirements for specifying normal-class and special-class concrete and for their manufacture, by either the batch or the continuous production method, for supply in the plastic state, to the customer. Gives performance requirements for the materials and plant used in the manufacturing process, including accuracy of measuring and batch equipment. Criteria for compliance with specified plastic and hardened state properties are also given, together with references to standard methods of testing for these and methods of assessment for compliance with compressive strength criteria. The Appendices cover information to be supplied when specifying special class concrete and methods for determining an acceptable degree of mixing uniformity in different types of mixers.

This Standard sets out the minimum requirements for-(a) the materials, plant and equipment used in the supply of concrete;(b) the production and, if applicable, the delivery of concrete in the plastic state;(c) specifying, sampling, testing and compliance with specified properties of plastic and hardened concrete; and(d) the uniformity of mixing.This Standard applies to the supply of all concrete. It is not intended to apply to mortars or grouts.NOTES:1 Requirements for mortars for masonry construction are given in AS 3700 and the methods for sampling and testing mortars in AS 2701.2 Requirements for grouts to be used for the grouting of prestressing tendons in ducts, are given in AS 3600.3 It is not intended that this Standard should take precedence over existing Australian Standards for the manufacture of specific concrete products.4 For additional requirements specified by the customer the applicable contract documents should be consulted.

First published as AS (E)A502-1941.
Revised and redesignated as AS A64-1960.
Second edition 1971.
Revised and redesignated AS 1379-1973.
AS A64-1960 withdrawn 1976.
Second edition 1991.
Third edition 1997.