AS 1379 SUPP 1-1997

1 - AS 1379 Supp1-1997 SPECIFICATION AND SUPPLY OF CONCRETE-COMMENTARY (SUPPLEMENT 1 TO AS 1379-1997)
4 - PREFACE
5 - CONTENTS
6 - SECTION C1 SCOPE AND GENERAL
6 - C1.1 SCOPE
6 - C1.3 OTHER MATERIALS, PLANT OR METHODS
6 - C1.4 DEFINITIONS
6 - C1.4.4 Cement
6 - C1.4.7 Customer
6 - C1.4.11 Project assessment
7 - C1.4.16 Supply
7 - C1.4.17 Total free water
7 - C1.4.18 Water-cement ratio (w/c)
7 - C1.6 SPECIFICATION OF CONCRETE
7 - C1.6.1 General
7 - C1.6.2 Standard strength grades
8 - C1.6.3 Normal-class concrete
10 - C1.6.4 Special-class concrete
11 - C1.7 METHODS OF ORDERING
15 - C1.8 BASIS OF SUPPLY
15 - C1.8.2 Volume of plastic concrete
15 - C1.8.3 Identification certificate
16 - SECTION C2 CONCRETE MATERIALS AND CONSTITUENT LIMITATIONS
16 - C2.2 CEMENT CONSTITUENTS
16 - C2.3 AGGREGATES
16 - C2.4 MIXING WATER
16 - C2.6 BULK STORAGE OF MATERIALS
16 - C2.6.1 Cement constituents
17 - C2.7 LIMITATIONS ON CHEMICAL CONTENT OF CONCRETE
18 - SECTION C3 PLANT AND EQUIPMENT
18 - C3.1 BINS AND SILOS
18 - C3.1.1 General
18 - C3.2 WEIGHING EQUIPMENT
18 - C3.2.2 Accuracy
18 - C3.3 LIQUID DISPENSING EQUIPMENT
18 - C3.3.2 Accuracy of metering
18 - C3.4 MIXERS
20 - SECTION C4 PRODUCTION AND DELIVERY
20 - C4.1 GENERAL
20 - C4.1.2 Method of measuring quantities of ingredients
20 - C4.2 BATCH PRODUCTION
20 - C4.2.1 Tolerances on batch ingredients
22 - C4.2.2 Batch mixing
23 - C4.2.3 Addition of water or admixtures to a mixed batch
24 - C4.2.4 Period for completion of discharge
24 - C4.3 CONTINUOUS PRODUCTION
24 - C4.3.1 Batching
24 - C4.4 DELIVERY
24 - C4.4.2 Temperature at point of delivery
25 - SECTION C5 SAMPLING AND TESTING OF CONCRETE
25 - C5.1 GENERAL
25 - C5.1.2 Grouping of plants
25 - C5.2 SLUMP
25 - C5.2.1 Frequency of testing
25 - C5.2.2 Determination of slump
26 - C5.3 STRENGTH
26 - C5.3.4 Action to be taken on noncompliance for strength
27 - C5.5 CHLORIDE AND SULFATE CONTENT
27 - C5.6 DRYING SHRINKAGE
27 - 5.6.1 Drying shrinkage of normal-class concrete
28 - SECTION C6 SAMPLING, TESTING AND ASSESSMENT FOR COMPLIANCE OF CONCRETE SPECIFIED BY COMPRESSIVE STRENGTH
28 - INTRODUCTION
30 - C6.1 GENERAL REQUIREMENTS
30 - C6.2 SAMPLING AND TESTING
30 - C6.2.2 Sampling
30 - C6.2.5 Test strength of samples
31 - C6.3 PRODUCTION ASSESSMENT
31 - C6.3.1 Basic requirements of production control
32 - C6.3.2 Grade being assessed
32 - C6.3.3 Sampling frequency
32 - C6.3.4 Production interval
33 - C6.3.6 Grouping of plants to determine nc and s
33 - C6.3.7 Action on noncompliance
33 - C6.3.8 Early age assessment of controlled grades
34 - APPENDIX CB - GUIDE TO THE SPECIFICATION OF SPECIAL-CLASS CONCRETE
34 - CB1 GENERAL
37 - REFERENCES

Proposes a commentary giving background material to, and explanations of, most of the requirements of AS 1379, particularly the changes proposed for the second edition. For ease of cross-reference, clause numbers in the commentary correspond to those in AS 1379 but are distinguished by the prefix 'C'.

The Standard was prepared for use in the specification and supply of all concrete, whether or not it is addressed in the scope and application of AS 3600, Concrete structures. It is not intended to apply to mortars or grouts.Requirements for mortars for masonry construction are given in AS 3700 and the methods for sampling and testing mortars in AS 2701. Requirements for grouts to be used for the grouting of prestressing tendons in ducts, are given in AS 3600. The supply of concrete by the premix concrete industry has been expressly but not solely contemplated in the preparation of the document. It is not intended that this Standard should take precedence over existing Australian Standards for the manufacture of specific concrete products. The publication of this edition of the Standard is intended to complete the independence of this Standard from AS 3600, Concrete Structures. Due to the lack of synchronization in publishing dates, for many years concrete as a material relied on both Standards to one degree or another. With the relatively recent revision of AS 3600 and the current edition of AS 1379, it is intended that AS 1379 is now a 'stand-alone' document for the specification and supply of concrete.

First published as AS 1379 Supplement 1-1997.