® ® 1/07
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1/07
General Technologies, Inc.® is proud to present the most reliable Fully Encapsulated Corrosion Protection System available to the Post-Tensioning Industry today. The GTI Zero Void® Encapsulation System is a proven method of providing corrosion protection for unbonded tendons.
The Zero Void® System eliminates the need to strip the plastic sheathing protecting the strand prior to stressing. GTI has perfected a special tool, the GTI Sheathing Stripper®, to remove the sheathing from inside the anchor cavity immediately prior to stressing. There is no bare strand exposure.
The Zero Void® System eliminates the need to fill tubes with grease as required by ACI 423.6 & the PTI Guide Specification. The Zero Void® System uses seals to provide thermal tolerance for shrinkage of the sheathing. The Zero Void® Fixed End, or Dead End, anchor can be push seated in the fabricator’s plant or hand installed by using a Zero Void® anchor with spring-loaded wedges in the field, thus eliminating pull seating of the fixed-end wedges and the need for a grease filled tube to protect the strand.
The Zero Void® Nail-Less Pocket Former® was designed to eliminate the use of nails to fasten the stressing anchor to the edge form, eliminating staining of the concrete surface.
The Zero Void® System utilizes the GTI Plasma Cutter® to cut tendon tails after stressing. The GTI Plasma Cutter® generates a minimal amount of heat during cutting and has no effect on the heat treatment on the strand and the wedges compared to oxy-acetylene torch cutting. The GTI Plasma Cutter® quickly cuts the tendon tail to a precise length, unlike other methods, so that the Zero Void cap can be quickly and permanently locked in place.
GTI’s patented Zero Void® Grease Cap was created especially for the Zero Void® System. The cap is supplied as part of the Zero Void® system and is pre-filled with grease that is held in place by our patented clear membrane. The clear membrane will be broken by the cut tail of the PT tendon when the cap is locked into place. Once the clear membrane has been broken, the grease displaced by the tendon tail will fill the wedge cavity, further increasing the corrosion protection within the assembly.
Our patented system consists of a cast anchor encapsulated in a thick (80 mil) high density polyethylene material with excellent chemical and cold temperature resistance. This hard coating makes the system more dependable than the ordinary epoxy coating that is currently available in the market today.
GTI’s Zero Void® System meets or exceeds the latest PTI & ACI requirements for mono-strand corrosion protection systems. The GTI Zero Void® System is a significant advancement in corrosion protection of unbonded tendons for post-tensioned concrete construction.
US PATENT No. 4,896,470; 5,072,558; 5,436,425; 5,440,842; 5,755,065; 5,770,286;
5,788,398; 5,839,235; 5,897,102; 6,017,165; 6,151,850; 6,176,051
US AND FOREIGN PATENTS PENDING 1/07
®
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Translucent Seal
206314 6" Zero Void ®
Seal
206303 Zero Void ®
Pocket Former, 2"
2043032" Pocket Former
207301 Zero Void ® Encapsulation
w/Metal Ring (Oxyacetylene)
206304 Zero Void ®
Pocket Former, Mandrel
206109Clear D.E./ L.E.
Cap with Grease206302
Zero Void ®
Cap with Grease
206310 Zero Void ® Encapsulation
withSpring-Loaded Wedges
206302 Zero Void ® Cap with Grease
201102 Wedges
Detail: Metal Ring
with Groove
201102 Wedges
206305 Zero Void ®
Pocket Former Nut
US PATENT No. 4,896,470; 5,072,558; 5,436,425; 5,440,842; 5,755,065;5,770,286; 5,788,398; 5,839,235; 5,897,102; 6,017,165; 6,151,850; 6,176,051US & FOREIGN PATENTS PENDING
206301 Zero Void ®
Encapsulation (Plasma)
Spring-Loaded Fixed End
Fixed End
Stressing End
206301 Zero Void ®
Encapsulation
206301 Zero Void ®
Encapsulation
206301 Zero Void ®
Encapsulation
206350 Zero Void ®
Intermediate Coupler
Assembly
206350 Zero Void ®
Intermediate Coupler Assembly
Intermediate Anchorage
0.5" Zero Void®
Mono-Strand Corrosion Protection System
®
1/07
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Translucent Seal
206414 6" Zero Void ®
Seal
206403 Zero Void ®
Pocket Former, 2"
2044012" Pocket Former
207401 Zero Void ® Encapsulation
w/Metal Ring (Oxyacetylene)
206404 Zero Void ®
Pocket Former, Mandrel
206209Clear D.E./ L.E.
Cap with Grease206402
Zero Void ®
Cap with Grease
206410 Zero Void ® Encapsulation
withSpring-Loaded Wedges
206402 Zero Void ® Cap with Grease
201202 Wedges
Detail: Metal Ring
with Groove
201202 Wedges
206405 Zero Void ®
Pocket Former Nut
US PATENT No. 4,896,470; 5,072,558; 5,436,425; 5,440,842; 5,755,065;5,770,286; 5,788,398; 5,839,235; 5,897,102; 6,017,165; 6,151,850; 6,176,051US & FOREIGN PATENTS PENDING
206401 Zero Void ®
Encapsulation (Plasma)
Spring-Loaded Fixed End
Fixed End
Stressing End
206401 Zero Void ®
Encapsulation
206401 Zero Void ®
Encapsulation
206401 Zero Void ®
Encapsulation
206450 Zero Void ®
Intermediate Coupler
Assembly
206450 Zero Void ®
Intermediate Coupler Assembly
Intermediate Anchorage
0.6" Zero Void®
Mono-Strand Corrosion Protection System
®
1/07