Fibre reinforced manufactured soil for light trafficking applications

Conventional pavement design aims to mitigate deterioration due to traffic loading, but current design specifications do not typically provide appropriate solutions for areas subjected to only occasional of light traffic, such as highway grass verges or overflow car parks. To date, a large number of these areas have been paved with bitumen or concrete with limited aesthetic appeal and which have been constructed to an excessive structural capability. One sustainable solution is to manufacture robust engineering surfaces that are visually appealing, using 100% grass cover, and which utilise less resource intensive recycled or alternative materials. The viability of using polypropylene fibres to reinforce soil manufactured from secondary aggregates and appropriate organic materials was assessed. Sandstone quarry surplus (SQS) and green waste compost (GWC) were mixed to create a soil, reinforced with filamentous fibres, that is suitable for controlled vegetation growth and with reduced maintenance costs. Laboratory tests on samples of manufactured fibre reinforced soil suggested that a mix ration of 3:1 (SQS : GWC) with the addition of as little as 0.3% of crimped fibre provided an suitably engineered surface for traffic use. Live field trials have been established in South Wales to determine the suitability of the soil for car parking under variable weather conditions over a full year of vegetation growth. For the covering abstract see ITRD E145817

  • Authors:
    • GRIFFITHS, R
    • LEWIS, J
  • Publication Date: 2006

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01155338
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Apr 23 2010 11:02AM