Cement grouting as a cure for unstable railway formation is not intended to provide a concrete slab under the ballast, but to stabilize the existing formation by driving out from it all free water and semi-liquid soil, which surges under passing trains. In fact pressure grouting has a double function by filling all the voids and setting in them, it seals them against penetration of further water by pumping action from below, and also from above. The grout, which is usually one part cement to five parts of sand, forms with the lower ballast a cemented mass that distributes the load evenly over the formation. The experiences and technical achievements of the AT&SF Railway with cement grouting are reported.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1944-12-22

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Filing Info

  • Accession Number: 00037983
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM