'Manufactured' Aggregate Expected to Climb

In many regions, sources of natural aggregates are being depleted. Many countries are looking at alternatives that will allow the use of manufactured sands with a higher percentage of microfines. This article describes some of the research efforts underway in Europe that will allow greater use of manufactured aggregates. Work is currently underway to improve the quality of aggregate production through several European standards. Some of the key objectives include consistency in the basic definitions, one single standard, full integration of recycled and manufactured aggregates, more reliable conformity criteria, only one test method per characteristic, and mechanization/automation of some manual test methods. A recent UK analysis of the growth potential for recycled and secondary aggregates use in asphalt over the next 10 years indicates that around 40% of primary aggregates could be replaced by secondary alternatives. At least one rock processing company is experimenting with replacing natural sand with manufactured sand for residential and road construction concrete applications.


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01010511
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 1 2005 11:05PM