AS 2758.5:2020 pdf Aggregates and rock for engineering purposes
1 Scope
This document provides a basis for specifying requirements for aggregates intended for use in asphalt production or mix. The requirements relate to quality of rock and other properties of aggregates.
Aggregates may be produced from rock, gravel, sand, metallurgical slag or suitable synthetic materials.
This document is intended for use by —
(a) federal, state and local government authorities (whether or not they are specifiers);
(b) consultant engineers (whether specifiers or not);
(c) suppliers and purchasers of asphalt aggregates;
(d) testing authorities;
(e) quality system certifiers and accreditation authorities; and
(f) educational organisations.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document.
NOTE Documents referenced for informative purposes are listed in the Bibliography.
AS 1141.3.1, Methods for sampling and testing aggregates, Method 3.1: Sampling—Aggregates
AS 1141.6.1, Methods for sampling and testing aggregates, Method 6.1: Particle density and water
absorption of coarse aggregate— Weighing-in-water method
AS 1141.6.2, Methods for sampling and testing aggregates, Method 6.2: Particle density and water
absorption of coarse aggregate— Pycnometer method
AS 1141.11.1, Methods for sampling and testing aggregates, Method 11.1: Particle size distribution—
Sieving method
AS 1141.11.2, Methods for sampling and testing aggregates, Method 11.2: Particle size distribution for vision sizing systems
AS 1141.12, Methods for sampling and testing aggregates, Method 12: Materials finer than 75 µm in
aggregates (by washing)
AS 1141.14, Methods for sampling and testing aggregates, Method 14: Particle shape, by proportional calliper
AS 1141.15, Methods for sampling and testing aggregates, Method 15: Flakiness index
AS 1141.18, Methods for sampling and testing aggregates, Method 18: Crushed particles in coarse aggregate derived from gravel
AS 1141.22, Methods for sampling and testing aggregates, Method 22: Wet/dry strength variation
AS 1141.23, Methods for sampling and testing aggregates, Method 23: Los Angeles value
AS 1141.24, Methods for sampling and testing aggregates, Method 24: Aggregate soundness—Evaluation by exposure to sodium sulfate solution
AS 1141.30.1, Methods for sampling and testing aggregates, Method 30.1: Coarse aggregate quality by visual comparison
AS 1141.32, Methods for sampling and testing aggregates, Method 32: Weak particles (including clay lumps,soft and friable particles) in coarse aggregates
AS 2758.0, Aggregates and rock for engineering purposes, Part 0: Definitions and classification
AS ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
AASHTO T 304, Standard method of test for uncompacted void content of fine aggregate
3 Terms and definitions
For the purpose of this document, the terms and definitions in AS 2758.0 apply.
4 Sampling
Sampling of an aggregate shall be carried out in accordance with the methods in AS 1141.3.1.
NOTE 1 The frequency of sampling should be nominated in the works specification or the supply agreement or as agreed with the supplier. In the absence of any of these documents, refer to AS 2758.0: 2020 Appendix A for a sampling scheme.
NOTE 2 Reference samples may be taken during the course of supply and retained for later testing.
5 Testing
Testing of aggregates shall be carried out in accordance with the relevant requirements of the applicable method. Laboratories that perform the tests outlined in this document shall meet the requirements of AS ISO/IEC 17025. The testing requirements and specified limits for all asphalt aggregates are prescribed in Clauses 4 to 10. NOTE A number of requirements in this document are fundamental and this specification provides a single test method and limits for these properties. Alternative test procedures and limits are presented for the determination of both shape and durability. For these properties, it is recommended that the test procedure and limits that are particular to the geographic area in which the aggregate source is located should be used in specifying supply.
AS 2758.5:2020 pdf Aggregates and rock for engineering purposes
