Patent · US Expired

Method and apparatus for strengthening/restoring a reinforced/prestressed concrete structure

US6385940B1 · kind B1 · utility

19Cited by

7References

12Claims

0Family size

Assignee

Leonhardt, Andrä und Partner Beratende Ingenieure VBI AG · DE

Inventors

Markus Maier · Graz, AT
Dieter Sandner · Waiblingen, DE
Hans-Peter Andra · Stuttgart, DE

Key dates

Filing date	Jun 16, 2000
Grant date	May 14, 2002
Priority date	—
Expiry date	Jun 16, 2020

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04G2023/0262
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A reinforced or prestressed concrete structure is strengthened and/or restored by attaching a strip-shaped tensional member thereto. Prior to attaching the tensional member, a central portion thereof is prestressed. Then, the tensioned central portion is bonded to a concrete surface of the concrete structure by a first adhesive having a high deformation modulus. Thereafter, the non-prestressed end portions of the tensional member are bonded to the concrete surface by a second adhesive having a low deformation modulus, whereby the second adhesive is substantially less deformable than the first adhesive.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.