Stabilisation practices in Queensland: cementitious modification and foam bitumen stabilisation 2013-14/2014-15
The Department of Transport and Main Roads Queensland (TMR) is charged with the establishment and maintenance of the road network, significant portions of which are composed of stabilised granular pavement layers. The widely varying prevalent source materials, environmental conditions and historical approaches across the state have purportedly given rise to regional stabilisation practices. As a result, stabilisation technologies with a history of satisfactory utilisation are indiscriminately selected and unfamiliar or previously unsuccessful technologies receive little consideration. Development of a systematic approach for selection of stabilisation technologies, based on site-specific conditions such as material availability, climate, environment and traffic, is critical to ensuring efficient practice in Queensland. Properly designed and implemented stabilised layers can significantly reduce the cost of pavement construction and/or rehabilitation by reducing the required quantities of higher-quality asphalt and Portland cement concrete. The effectiveness and value for money of different stabilisation techniques, including cementitious modification and foamed bitumen bounding, is greatly debated within the pavement engineering community. Research, development and long-term monitoring are needed to establish the most efficient (cost, construction and maintenance) stabilisation solutions under various climatic, environmental and operational conditions. There may be significant cost savings to be realised by standardising the additive selection, design, construction, and maintenance practices for stabilised pavement layers. It is consequently proposed that the long-term performance of Queensland roads can be enhanced through improved decision making, provisioning and management of pavements incorporating stabilised structural layers.
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Corporate Authors:
National Asset Centre of Excellence (NACOE)
Brisbane, Queensland -
Authors:
- Griffin, J
- Zhong, J J
- Chong, L
- Publication Date: 2015-10
Language
- English
Media Info
- Pagination: 235p
Subject/Index Terms
- TRT Terms: Climate; Location; Pavement components; Pavement design; Pavement layers; Transportation departments
- Geographic Terms: Queensland
- ATRI Terms: Climate; Location; Pavement design; Pavement layer; Pavement materials; Road authority; Stabilization
- Subject Areas: Highways; Pavements;
Filing Info
- Accession Number: 01835432
- Record Type: Publication
- Source Agency: ARRB Group Limited
- Report/Paper Numbers: P2P14P16
- Files: ATRI
- Created Date: Feb 7 2022 2:18PM