PROTECTION OF FOUNDATION SOIL BY BITUMEN AND GLASS FIBRE WOOL

A NEW METHOD OF SEALING BY COVERING THE FOUNDATION SOIL WITH A COATING OF GLASS FIBRE REINFORCED BITUMEN IS DESCRIBED. EARLY TESTS ON SITE IN 1963 SHOWED THAT SIMPLE TREATMENT WITH A BINDER IS INADEQUATE BECAUSE OF ITS MECHANICAL SENSITIVITY. FOLLOWING ON PRELIMINARY LABORATORY EXPERIMENTS, THEREFORE, A METHOD WAS EVOLVED, IN WHICH THE BITUMEN COATING IS STRENGTHENED WITH GLASS FIBER WOOL AND THUS RENDERED MORE ABLE TO WITHSTAND MECHANICAL LOADING. THE TESTS SHOWED THAT A FOUNDATION SOIL TREATED IN THIS WAY REMAINED INTACT EVEN AFTER RAIN WHEREAS IN THE CASE OF AN UNPROTECTED FOUNDATION SOIL THE GRAVEL IN THE OVERLYING ANTI-FROST LAYER HAD INTERMIXED WITH PLASTIC SOIL. IN THE SECTION OF THE FULDA-WURZBURG MOTORWAY UNDER CONSTRUCTION, BECAUSE OF THE BAD SUMMER FOR CONSTRUCTION WORK OF 1965, THE METHOD WAS USED ON A LARGE SCALE. IN THE COURSE OF CONSTRUCTION, BECAUSE OF THE INITIALLY SOFT CONDITION OF THE BITUMEN COATING, THE EMULSION WAS REPLACED BY HOT BITUMEN. IN SUMMARY, IT IS ESTABLISHED THAT A BITUMENGLASS FIBRE WOOL COVERING IS A USEFUL AND ECONOMIC REMEDY FOR FOUNDATION SOIL WHICH IS SENSITIVE TO THE WEATHER. /RRL/

• Supplemental Notes:
  • Vol 28, No 4, PP 100-113, 8 FIG, 1 TAB
• Authors:
  • Stahff, U
• Publication Date: 0

Media Info

• Serial:
  • Bitumen /Germany/

Subject/Index Terms

• TRT Terms: Binders; Bitumen; Coatings; Earthwork; Foundation soils; Frost damage; Glass fibers; Gravel; Laboratory studies; Loads; Plastic soils; Rainfall; Road construction; Weathering
• Uncontrolled Terms: Loading
• Old TRIS Terms: Glass wool
• Subject Areas: Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00230896
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Aug 15 2004 1:52AM