Metallic sheath for posttensioning method

Details Metallic sheath for posttensioning method Metallic sheath for posttensioning method

1982-11-12

1986-03-25

Murtagh, John E.

Static structures (e.g., buildings)

Irreversibly reactive component

E04C 512

Patent

active

045774439

ABSTRACT:
In a prestressed concrete structure executed by posttensioning method, a metallic sheath having an inner peripheral surface thereof in sliding contact with a tendon coated with a solid lubricating coating including polytetrafluoroethylene (PTFE).
By the use of this metallic sheath, the sliding frictional resistance produced between the metallic sheath and tendon when the tendon is subjected to tensioning operation is considerably decreased to increase the prestressing force introduced into the structure accordingly.
The solid lubricating coating is excellent in flexibility and contact properties, and good characteristics of coating are imparted to the sheath.

REFERENCES:
patent: 3672712 (1972-06-01), Davis
patent: 3833706 (1974-09-01), Edwards
patent: 3909424 (1975-09-01), Clark
patent: 4068963 (1978-01-01), Brandestini
patent: 4189522 (1980-02-01), Mori
patent: 4361629 (1982-11-01), Mori
patent: 4434063 (1984-02-01), Kageyama
patent: 4442646 (1984-04-01), Prevedini

Affiliated with

Also associated with

Rating

Metallic sheath for posttensioning method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metallic sheath for posttensioning method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallic sheath for posttensioning method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-623923