Which advantage do post-tensioned concrete beams gain from introducing carefully controlled tendon elongation?

💡 Explanation

Less creep occurs in post-tensioned concrete from creep strain gradient control using the prestressing mechanism, adjusting the compression in the concrete. Creep and shrinkage rates decrease because applied compression from prestressing counteracts these effects, therefore minimizing deformation, rather than primarily increasing strength.

• Which risk increases when steam injection during concrete curing elevates humidity prematurely in a pre-stressed beam?
• Which consequence results when exceeding a column's slenderness ratio limit?
• Which risk increases when continuously interrupting fault current using vacuum breakers?
• Which risk increases when rapidly switching capacitor banks in a power distribution circuit happens?
• Which consequence results when automated turret lathes exceed dimensional tolerances?
• Which outcome occurs inside prestressed concrete reactor containment when subjected to internal pressure exceeding design?