Production of durable concrete structures

This paper examines the changes that have taken place over the last 20 years in the Queensland Main Roads Concrete Specification in an effort to produce durable concrete structures. Design Codes for road infrastructure are requiring design lives of 100 years compared with 40 to 60 years for concrete buildings. This demand for an increasing return from our road infrastructure places a major emphasis on understanding the long term durability performance of locally available materials. In this regard Queensland Main Roads has conducted significant applied research in the understanding and prevention of alkali-silica reaction (ASR) in the concrete road structure network. This research has led to a major specification shift towards the preferred use of suitable blended cements rather than plain portland cements in our concrete structures to reduce ASR. Additional flow on benefits may accrue when blended cements are used such as reduced heat of hydration, shrinkage and permeability. The outcomes achieved in this research have proven the significant return on investment that can be achieved through the completion of fundamental applied concrete technology research on local materials and the early application of the results into our Specifications.

Language

  • English

Media Info

  • Pagination: 35-9

Subject/Index Terms

Filing Info

  • Accession Number: 01435687
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 24 2012 7:11PM