PDF《CRYOGENIC REBAR》

-165?C / -265?F CRYOGENIC REBAR SPLICING SYSTEMS

2 Cryogenic Rebar Splicing Systems Cryogenic Rebar Splicing systems are an extension to the LENTON line of concrete reinforcement products available from Pentair.

Our products provide the ideal splicing solution for joining rebar in cryogenic applications. By combining the LENTON taper-threaded couplers with state-of-the-art materials we have been able to develop one of the slimmest couplers on the market, while still maintaining top performance. LENTON brand of Cryogenic Rebar Splicing systems should be specified whenever cryogenic-grade rebar is used or when during normal operating or emergency conditions the temperature falls below C20° C (-4° F). Typical construction projects include LNG and LPG storage tanks. Benefits ? Improved performance and reliability at cryogenic temperatures (-165° C / -265° F) ? Available for a wide range of applications ? Small coupler diameter helps minimize cover and helps eliminate congestion ? Unique taper thread requires no lock nuts and provides a positive locking, no-slip connection ? Requires no special skill and reduces labor costs Performance At ambient temperatures, the cryogenic couplers are intended for use in reinforced concrete structures designed and built in accordance with major international building codes such as ACI?

318 Types

1 &

2, DIN1045 and BS8110. At cryogenic temperatures the tensile strength of the splice meets or exceeds the yield strength of an unnotched bar. This is known as the Notch Sensitivity Ratio (NSR).* NSR=1 Uniform elongation at maximum load on Cryogenic spliced bars is a minimum of 1%. *Note: In the absence of any current codes governing the use of splicing systems for cryogenic applications we have applied the reinforcing bar test criteria utilized in BS

7777 part

3 and EN 14620-3. Construction codes BS

7777 part

3 and EN 14620-3 are the most often applied standards for the design and construction of flat-bottomed, vertical, cylindrical storage tanks for low temperature service. Lower yield strength of unnotched bar Tensile strength for LENTON brand of Cryogenic Splice www.erico.pentair.com

3 LENTON Taper Threaded?Splices LENTON brand of standard couplers are some of the slimmest couplers available and their tapered thread makes them the most reliable, easy to install and cost effective system. LENTON Position Couplers LENTON brand of position couplers are designed to splice two curved, bent or straight bars when neither bar can be rotated. The couplers are quick and easy to install and feature our unique, self-aligning taper-threaded design for continuity and structural integrity. LENTON TERMINATOR (Headed Bar) LENTON TERMINATOR is a taper-threaded anchorage, which is secured to the end of a length of reinforcing steel bar and is capable of creating a more effective anchorage than the traditional hooked rebar. This approach greatly simplifies rebar placement, reduces congestion and improves structural integrity. A B C A B C Cryogenic Rebar Splicing Systems The LENTON taper threaded range consists of standard and transition couplers as well as positional couplers and headed bars. Designed to withstand man-made blasts and other seismic events, spliced bars develop higher tensile strength than lap splicing and provide full load transfer with the slimmest and shortest coupler possible. Spliced bars also behave as a continuous length of reinforcing steel and provide full strength in tension, compression and stress reversal applications. www.erico.pentair.com