Geophysical (seismic and microseismic reflection, electromagnetic surveys, and hydrogeology), geological, geotechnical, and rock mechanics data are used in an engineered approach to grouting in Europe, where it is further enhanced by computerization. The surge in grouting is due to applications related to seepage control and rehabilitation. More sophisticated chemical and alternative grouting techniques have led to dramatic changes. A resurgence of hot bitumen grouting to economically stop major inflows is noted. In structural repair and concrete injection, epoxies are being replaced by polyurethane elastomers. There is continuous evolution in equipment, advanced automation, including computers, monitoring systems, and quality control. Jet grouting and very high pressure grouting are used to grout soils with low hydraulic conductivity. Additives, including polymers and copolymers are used to modify the characteristics of cementitious grouts for particular applications. Some unusual applications are described: combined rootpiles; and flexible foam grouting. The injectotube use to grout cold joints and expansion joints is an innovative development in seepage control grouting. Also, specialized contractors have become resin formulators and applicators and can supply grouts for specific project requirements.

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Filing Info

  • Accession Number: 00488924
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 31 1989 12:00AM