Vsl International Ltd

Robert Duncan Lapsley

John Richard Crigler

Donald Paul Kline

Daniel Wallace Falconer

A post-tensioning apparatus and method including first and second body sections interconnected by an intermediate anchor head. Each body section has an end anchor head on an end opposite the intermediate anchor head and includes a tendon with a pair of strands adapted for being tensioned between the intermediate anchor head and the corresponding end anchor head of each body section. Each pair of strands is encapsulated between the intermediate anchor head and each corresponding end anchor head of each body section in a mechanically interlocked duct adapted to receive a bonding agent after tensioning of the strands. A passage is provided proximate the end anchor head of the first body section and provides a passage for insertion of bonding agent, preferably in the form of grout, into the duct of the first body section. Grout can be injected through the passage proximate the end anchor head of the first body section such that the grout can enter and fill the duct of the first body section. A tube provides a passage for grout to pass from the duct of the first body section to the duct of the second body section and around the intermediate anchor head. The ducts of both body sections can be filled with grout by passage of grout only through the passage proximate the end anchor head of the first body section and through the tube connecting the ducts of the first body section and the second body section.

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Raleigh, NC, United States of America

Robert Duncan Lapsley