Material Specific Test Protocol
Rebar (zeeg)
1. Kev npaj ua qauv
- Length yuav tsum tau: L=20d + clamp length (d=nominal txoj kab uas hla)
- Deg mob: thawj, tsis muaj kev puas tsuaj
- Clamp xaiv raws li txoj kab uas hla bar thiab deformation hom
2. Kev ntsuas ntsuas
- Preload: 2-5% ntawm lub zog tawm los
- Test ceev:
* Ua ntej tawm los: 10-30 MPa/s
* Tom qab tawm los: 0 25-0.5 strain/min
- Kub: 23 ± 5 ° C
3. Kev ntsuas tseem ceeb
- Yield zog (ReH/ReL)
- Qhov kawg Tensile Strength (Rm)
- Ntev (A5 / A10)
- Kev txo qis hauv cheeb tsam
- Yield rau Stretch Ratio (ReH / Rm)