AS 2150:2020 pdf Asphalt — A guide to good practice
1 Scope
This Standard sets out recommendations for the manufacture, supply and placing of asphalt, both hot mix and warm mix, for use in pavements, including the following:
(a) Materials in the asphalt.
(b) Asphalt properties.
(c) Asphalt mix design.
(d) Manufacturing, storage and delivery.
(e) Sampling and testing.
(f) Preparation of surfaces.
(g) Spreading.
(h) Compaction.
(i) Finished surface properties.
(j) Selection of type of asphalt.
This Standard includes typical composition and test properties for most common uses; however, this
does not preclude the use of alternative components or mix properties to meet specific performance requirements.
This Standard does not include recommendations for cold mix asphalt prepared without heating or
designed to be placed cold as maintenance patching material.
NOTE 1 Guidance on asphalt planning is given in Appendix A.
NOTE 2 Guidance on selection of types of asphalt is given in Appendix B.
NOTE 3 Guidance on principles of asphalt mix design is given in Appendix C.
2 Normative references
There are no normative references in this document.
NOTE Documents referenced for informative purposes are listed in the Bibliography.
3 Terms and definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1 added filler
mineral matter, suitable for use in asphalt that is added to the combined aggregate of an asphalt mix
Note 1 to entry: At least 75% of the filler should be finer than 0.075 mm. The entire filler should be finer than 0.600 mm.
3.2 adhesion agent
substance used for the purpose of improving the adhesion between a bituminous binder and aggregate
Note 1 to entry: This term usually refers to adhesion in the presence of water.
3.3 aggregate
material composed of discrete mineral particles of specified size or size distribution, produced from
gravel, rock or metallurgical slag, using selective extraction, blasting, crushing and screening
3.3.1 coarse aggregate
aggregate having a nominal size not less than 5 mm
3.3.2 fine aggregate
aggregate that substantially passes a 4.75 mm sieve
3.3.3 gap-graded aggregate
graded aggregate in which one or more of the intermediate sizes are absent or present in
small proportions
3.4 asphalt
mixture of bituminous binder and aggregate, with or without mineral filler, produced hot or warm in a mixing plant that is delivered, spread and compacted while hot or warm
3.5 binder
bituminous material used for the purpose of holding solid particles together as a coherent mass
3.6 bitumen
bituminous materials obtained by processing the material obtained from the refining of naturally
occurring crude petroleum
3.7 bituminous
material that resembles or contains bitumen
3.8 bulk density
mass per unit volume including voids in a material
3.9 crumb rubber
rubber particles manufactured from waste or reclaimed rubber products such as vehicle tyres and
graded to conform to a specified size range
Note 1 to entry: Crumb rubber is used in bitumen to improve binder properties.
3.10 crushed recycled glass
granular material having a maximum nominal size of 5 mm and is primarily manufactured by crushing container glass
Note 1 to entry: Washing of crushed glass assists in the removal of contaminants and organic odour.
3.11 dense-graded asphalt
mixture of coarse aggregate, fine aggregate, filler and bitumen placed hot or warm and compacted to a dense state as a pavement layer or resurfacing
Note 1 to entry: This includes the use of modified binders and the addition of various additives to enhance the performance of asphalt.
3.12 fibre
additive for reducing binder drain-off in stone mastic asphalt and open-graded asphalt mixes
3.13 filler
material derived from aggregate or other granular material passing a 0.075 mm sieve
3.14 fine gap-graded asphalt
dense mix with intermediate sized fractions replaced by finer fractions
Note 1 to entry: This asphalt may also contain more filler and bitumen.
3.15 gap-graded asphalt
asphalt mix in which gap-graded aggregate is used
Note 1 to entry: For example, fine gap-graded asphalt or stone mastic asphalt.
3.16 maximum density
density that could be achieved in a sample of asphalt if it were possible to compact it so as to exclude all air voids between coated aggregate particles
Note 1 to entry: Maximum density is also known as void-free density.
3.17 maximum theoretical density
theoretical determination of maximum density based on the density of the materials used in the asphalt
3.18 maximum size
sieve size one size above that of the nominal size
3.19 modified binder
binder with enhanced performance achieved by the incorporation of additives or special processing to achieve specific physical properties
Note 1 to entry: Additives may be polymers, resins, rubber or other material.
3.20 nominal size
size designation of an aggregate or asphalt mixture, which gives an indication of the largest particle
size present
AS 2150:2020 pdf Asphalt — A guide to good practice
