The cross-section of a thermo-mechanically treated (TMT) reinforcing b

1.	The cross-section of a thermo-mechanically treated (TMT) reinforcing bar has
A.	soft ferrite-pearlite throughout
B.	hard martensite throughout
C.	a soft ferrite-pearlite core with a hard martensitic rim
D.	a hard martensitic core with a soft pearlite-bainitic rim
Answer» D. a hard martensitic core with a soft pearlite-bainitic rim

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The cross-section of a thermo-mechanically treated (TMT) reinforcing bar has

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