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Tensile creep test rigs

 

General Information

Location:

BATir - Building, Architecture & Town Planning, building : C, local : Technical

Key words:

Tensile creep / Concrete

Main application:

Two tensile creep rigs were developed for testing concrete in tension at early age under free and restraint conditions. The machine is totally programmable and controlled (force and displacement of each sensor) by computer. The concrete specimen is glued to steel cylinders at each extremity. These cylinders are pinned to a fixed steel head and a moving end which composed the device. The measurements of the displacements are taken in the central part of the specimen where the stress field is assumed to be homogenous. The measurement of these values allows defining at all times the stress and strain inside the cement based material. Extensometers in Invar© are used for the measurement of the longitudinal and transversal displacement. A dummy specimen is used for each series of test to monitor the thermal and autogenous strains. Tests are carried out in a climatic room with a constant temperature and in sealed or unsealed condition. It is also possible to monitor the damage in the sample with the acoustic emission.

Contact details

Stéphanie Staquet

Associate Professor - Chargée de cours

Service BATir - Building, Architecture & Town Planning  

Université Libre de Bruxelles  ULB

87, A.Buyl Avenue CP194/4

1050 Bruxelles (Belgium)

Tél:+32 2 6502758

Fax:+32 2 6502782

courriel: sstaquet@ulb.ac.be

http://batir.ulb.ac.be/research/lgc-civil-engineering.html

Instrument specification

Quantity :

1

Composed by :

-          A mechanical device

o   2 electromechanical testing machines

-          1 instrumentation

o   4 extensometers in Invar©

o   12 displacement sensors linked to Orbit 3 Solartron network

o   12 displacement sensors

o   2 temperature sensors linked to Orbit 3 Solartron network

o   2 thermocouples linked to Orbit 3 Solartron network

o   2 computers with an integrated acquisition software

-          Acoustic emission

 



Quantity: 2