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SAMARIS Creep test

SAMARIS Creep test. Meeting at TRL 2-3 March 2005. Time schedule. Sample reception LAVOC cores De cember 2004 DRI slabs February 2005 Test program Sample preparation (coring and cutting) February 05 Density measurement Creep test At 50°C February-March 05

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SAMARIS Creep test

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  1. SAMARISCreep test Meeting at TRL 2-3 March 2005

  2. Time schedule • Sample reception • LAVOC cores December 2004 • DRI slabs February 2005 • Test program • Sample preparation (coring and cutting) February 05 • Density measurement • Creep test • At 50°C February-March 05 • At additional T°C to be discussed • Binder information ?

  3. Creep test conditions (1/2) • European standard PrEN 12696-25 • Method A: uniaxial cyclic compression test with confinement • Method B: triaxial cyclic compression test • British Standard BS 598-111 • Unconfined uniaxial loading test • Internal Shell protocol • Performed on the NAT • Sample size 100 mm Diam 60 mm Height • Normal stress 100kN • Temperature 50°C • Pulse time 0.2s loading + 1.8s rest

  4. Creep test conditions (2/2)

  5. Sample preparation • From LAVOC material Done • 2x9 cores 90mm diam (not 100mm) • Layer sawing in order to have • Surface layer 2x30mm thick • Base layer 60mm thick • From DRI material Under progress • 2 slabs • Coring • Layer sawing as for LAVOC

  6. Preliminary measurements (1/3) • Density measurement (for the time being for LAVOC only) • Require information on mix characteristics (density, composition, …) • Slight difference between base and surface layers • Scattering of results (higher for surface than base) Impact of test results

  7. Preliminary measurements (2/3)

  8. Preliminary measurements (bis)

  9. First creep test result for LAVOC • Base layer • Excellent behaviour • Longer test required • Surface layer • Lower behaviour • Breakdown of certain sample

  10. Next step • Creep test on the DRI material at 50°C • Further information on mixture • Coefficient calculation • Binder data (viscosity of fresh binder) ? • To be discussed • Test at another temperature? Other conditions?

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