News

SAMIfalt I-Brid in Victoria

by developer

News

SAMI in conjunction with Centre State Asphalting have paved 540 tonnes of IBrid modified asphalt on the VDOT road network at Kangaroo Flats in Bendigo. The IBrid binder is the result of a collaborative research project undertaken by SAMI and RMIT to develop a product to be able to provide maximum rut resistance at high road temperatures & high flexibility at low temperatures under heavy traffic.

#SAMI #Innovation #Ibrid #Bendigo #Centrestateasphalting #VDoT #RMIT #binder #bitumen #asphalt #asphaltpaving

Sealing Green

by developer

News

The article is written by Tara Hamid and originally appeared in the March 2021 issues of the Roads and Infrastructure magazine.

Investing in EME2

by Gerard Gnanaseelan

News

Long-Haul Crumb Rubber to Remote Airports and Beyond

by developer

News

The article is written by Tara Hamid and originally appeared in the October 2020 issues of the Roads and Infrastructure magazine.

GB5 is not a replacement for EME2

by Gerard Gnanaseelan

News

Comparing High-Performance Asphalt mixes:
A Product is not a Specification
GB5 is not a replacement for EME2

EME2: A Well-Defined Specification, Tried and Tested

EME2 is a specification for high-performance asphalt originally developed in France over 30 years. It requires that the mix must meet a set of laboratory performance criteria. Below is a summary of the key performance criteria for fatigue and modulus according to the French Standard reference (NF EN 13108-1), two essential performance indicators:

EME2

GB5: A proprietary product with a wide range of performance results

As opposed to EME2, GB5 is not a specification but a proprietary product. The graph below shows actual fatigue and modulus results for GB5 gathered from published technical papers and plotted against the French specification framework. See Appendix A for all the details on the source of the data points used in the graph. It shows that a large spread in the modulus and fatigue values with a few possibly meeting EME2 requirements, and many others clearly outside the EME2 performance criteria.

Data

At SAMI, we believe performance should not be a gamble

As a supplier of EME2 bitumen, we will ensure that the binder supplied for your EME2 asphalt will achieve the performance criteria for EME2 asphalt as prescribed by the Australian performance-based specifications.

As we have done for several hundred thousand tonnes already placed on Australian roads, we will also work with our customers to ensure their EME2 mixes meet these tried and tested performance criteria.

Appendix A: Summary of all published modulus and fatigue results for GB5

Data