The design of durable concrete structures for aggressive environments

This paper examines the current issues facing Queensland Main Roads in relation to designing concrete structures to withstand aggressive environmental conditions. The two main conditions that need to be considered are aggressive soils and aggressive solutions against our concrete structures. In relation to aggressive soils the two dominant ones are acid sulfate soils which generally occur in the coastal regions including sulfide bearing source rock typically found near volcanic areas and sodic soils which cover 45 per cent of Queensland and generally occur away from volcanic zones. A detailed analysis of the chemistry of the soil and groundwater is needed for assessment of the long term effects on embedded concrete structures. The three main compounds affecting concrete are acids, sulfates and chlorides. The acids will dissolve the concrete matrix while the sulfates attack specific compounds in the hydrated matrix (aluminates) and the chlorides will attack any included reinforcement causing accelerated corrosion damage. (a) For the covering entry of this conference, please see ITRD abstract no. E211649.

  • Authors:
    • CARSE, A
  • Publication Date: 2004

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01011265
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 2:57PM