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In no-fines concrete the drying shrinkage is reported at about 200 × 10⁻⁶, which is roughly:
Answer & Solution
Correct answer: A.
1. Conventional concrete typically shrinks at about 400 × 10⁻⁶ over its drying life.
2. No-fines concrete contains less paste because point-to-point contact reduces paste demand.
3. The unit reports a drying shrinkage of about 200 × 10⁻⁶ for no-fines concrete.
4. This value is roughly half of conventional concrete's shrinkage.
5. However, the rate of shrinkage is higher: 50–80 percent finishes in about ten days.
_Source: IGNOU Concrete Technology, Unit 11 "Special Concrete" (Light Weight, Aerated, No-Fines, High Density, Fibre Reinforced, Polymer Concrete)._
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