STANDS TO RESIN

This article reports on a system for ensuring that concrete structures are waterproof, developed by the Swiss company Rascor Engineering. Many techniques have been developed to keep concrete structures like basements and tunnels watertight. Of the three basic types of technique, Rascor prefers the 'white-box' method, using high-quality concrete with all joints waterproofed. Rascor's version of this is its recently developed Rascotec system, at whose heart there is a strip of plastic foam with continuous cavities partly surrounded by a plastic moulding. This is fixed open-face on the surface of the previous concrete pour, with its soft foam conforming to any irregularities. After the next pour has hardened, operatives drill down to the plastic moulding, which has protected the foam from the fresh concrete. Rascoflex, a special acrylic resin, is injected into the foam; it was originally developed to seal and waterproof already leaking existing structures, but it is also sensible to use it as part of a system to prevent structures from leaking at all. Rascoflex is a two-part water-based acrylic with the same viscosity as water. It expands 10-15% as it cures. The pressure that it generates locks the cured resin firmly into position in the cracks in the concrete.

• Corporate Authors:

  EMAP CONSTRUCT LIMITED

  151 ROSEBERY AVENUE
  LONDON,   United Kingdom  EC1R 4QX
• Authors:
  • PARKER, D
• Publication Date: 1999-11

Language

• English

Media Info

• Pagination: p. 10
• Serial:
  • CIVIL ENGINEER INTERNATIONAL
  • Issue Number: 56
  • Publisher: EMAP CONSTRUCT LIMITED

Subject/Index Terms

• TRT Terms: Cast in place concrete; Concrete; Expanded materials; Joints; Methodology; Organizations; Plastics; Prevention; Quality control; Seepage; Structures; Synthetic resins; Tunnels; Waterproofing
• Uncontrolled Terms: Quality
• ITRD Terms: 3352: Building (structure); 4781: Cast in situ concrete; 4755: Concrete; 3355: Engineering structure; 4502: Expanded material; 2998: Joint (structural); 9102: Method; 9057: Organization (association); 7454: Plastic material; 9149: Prevention; 9063: Quality; 4315: Seepage; 7460: Synthetic resin; 3374: Tunnel; 3375: Waterproofing
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Security and Emergencies;

Filing Info

• Accession Number: 00782692
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Feb 7 2000 12:00AM