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In Polymer Concrete (PC), unlike ordinary concrete, the binder for the aggregates is not Portland cement but:
Answer & Solution
Correct answer: C.
1. The unit distinguishes Polymer Concrete (PC) from Polymer Cement Concrete (PCC) by the binder.
2. In PC the aggregate is bound entirely by a polymer, with no Portland cement at all.
3. Graded aggregates are prepacked, the monomer is diffused through them and polymerised by radiation or chemical means.
4. The polymer makes PC hydrophobic and chemically resistant, with strength as high as 1410 kg/cm².
5. Lime, bitumen and oxychloride binders are not the binder in PC.
_Source: IGNOU Concrete Technology, Unit 11 "Special Concrete" (Light Weight, Aerated, No-Fines, High Density, Fibre Reinforced, Polymer Concrete)._
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