Patents Assigned to Molecrete Corporation
  • Method of preparing cementitious compositions for tunnel backfill
    Patent number: 4419135
    Abstract: A cementitious composition for backfilling and sealing tunnels and other underground structures comprising 12-16 parts sand, 3-6 parts cement, 1.5-3 parts water, 0.1-0.5 parts plasticizer and 0.02-0.04 parts of a pituitous water soluble polyethylene oxide thickening agent.
    Type: Grant
    Filed: October 6, 1981
    Date of Patent: December 6, 1983
    Assignee: Molecrete Corporation
    Inventor: John H. Hoge