IMMOBILISATION OF PHENOL AND PAH BY SPECIAL HYDRAULIC BINDERS

This paper describes the consolidation of tarviated scarified road material by means of a hydraulic binder. This binder effects a decisively higher decrease in exchange of phenols and polycyclic aromatic hydrocarbons (PAH) compared to common cements due to its composition and a special additive. Thus the special binder also permits a non-polluting and durable recycling of scarified road material with a higher rate of contamination in amounts of soluble phenols and PAH for the use in hydraulicly bound roadbases. After a discussion of the latest scientific findings on the subject, laboratory experiments performed to investigate the following questions are discussed: a) the influence of pH value on the solubility of phenol; b) the absorption of solved phenols by inert ultra-fine aggregate particles and by cements; c) investigations on hardened test samples to screen the efficacy of the special hydraulic binder; d) additional reduction of phenol exchange by means of the Phenolex additive; and e) the influence of the type of binder on the exchange of PAH. It is concluded that the recycling of tarviated scarified road material by utilization of hydraulic binders is applicable for hydraulic set soil bases as well as for the consolidation of the superstructure. For the covering abstract of the conference see IRRD 869363.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 247-56

Subject/Index Terms

Filing Info

  • Accession Number: 00675809
  • Record Type: Publication
  • Source Agency: DIENST WEG- EN WATERBOUWKUNDE (DWW)
  • ISBN: 0-444-81853-7
  • Files: ITRD
  • Created Date: Apr 12 1995 12:00AM