LIME DEWATERING IN CLAY

A high quality, high reactivity lime was applied to boulder clay for dewatering the moisture laden soil. The quicklime releases heat on contact with water, absorbing moisture in the chemical reaction; absorption is rapid and improvement in stability can, it is reported, be seen within minutes of applying the lime. Chippings were used to reduce dust and protective clothing was worn, since quicklime is caustic. It was noted that if further rain soaks treated soil the water may be quickly dispersed by the dozer remixing the material and reactivating the quicklime. Natural drying would have taken 7-10 days, whereas this method required only several hours. It was estimated that with a cost for the lime chips at 11.30 L (26.22 dollars) per ton plus 10 percent for plant charges, the mopping-up operation cost about 1,500 L (3,480 dollars). Allowing for a standing charge for earthmoving plant on site of 100 L (232 dollars) per hour the dewatering operation had a cost-equivalent of around 15 hours down-time.

  • Availability:
  • Corporate Authors:

    Foundation Publications Limited

    7 Ongar Road
    Brentwood CM15 9AU, Essex,   England 
  • Publication Date: 1975-5

Media Info

  • Pagination: p. 50
  • Serial:
    • GROUND ENGINEERING
    • Volume: 8
    • Issue Number: 3
    • Publisher: EMAP CONSTRUCT LIMITED
    • ISSN: 0017-4653

Subject/Index Terms

Filing Info

  • Accession Number: 00099002
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 5 1975 12:00AM