A REVIEW OF THE GEOLOGICAL FACTORS INFLUENCING THE MECHANICAL PROPERTIES OF ROAD SURFACE AGGREGATES

Investigation of the mechanical properties of road surfacing aggregates and particularly of the polishing characteristics has occupied many researchers in recent years. The influence of geological factors on these properties has however not received the same prominence in the literature as the engineering aspects. This paper has been written with a view to gathering together the salient features of the less publicised work. After reviewing the general requirements of road surfaces the term "roadstone durability" is introduced in the context of surfacing aggregates and the various geological factors likely to influence the roadstone durability are indicated. The influence of petrography upon the strength and the resistance to stripping, abrasion and polishing of roadstones is described together with methods used to assess their potential performance. Shortage of high quality surfacing materials has resulted in the development of artificial aggregates and some aspects of this work are described. /Author/TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/04812085
• Corporate Authors:

  GEOLOGICAL SOCIETY

  BURLINGTON HOUSE, PICCADILLY
  LONDON,   United Kingdom  W1V 0JU
• Authors:
  • Hartley, A
• Publication Date: 1974

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 69-100
• Serial:
  • QUARTERLY JOURNAL OF ENGINEERING GEOLOGY
  • Volume: 7
  • Issue Number: 1
  • Publisher: GEOLOGICAL SOCIETY
  • ISSN: 0481-2085

Subject/Index Terms

• TRT Terms: Abrasions; Aggregates; Artificial aggregates; Calcined aggregates; Classification; Durability; Geology; Hardness; Pavement stripping; Pavement wearing course; Petrography; Polished aggregates; Skid resistance; Strength of materials; Surfacing; Wear; Weathering
• Uncontrolled Terms: Artificial
• Old TRIS Terms: Aggregate characteristics
• ITRD Terms: 4577: Aggregate; 9097: Artificial; 4579: Calcined aggregate; 8513: Classification; 5910: Durability; 5914: Hardness; 3822: Polishing; 3031: Skid resistance; 5544: Strength (mater); 5287: Stripping (binder); 2972: Surfacing; 5293: Wear; 2980: Wearing course; 5281: Weathering
• Subject Areas: Geotechnology; Highways; I36: Aggregates;

Filing Info

• Accession Number: 00096175
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jul 24 1975 12:00AM