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The excessive dampness at certain points on the Plastered surface due to ___________

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in Construction & Building Materials by (190k points)
The excessive dampness at certain points on the Plastered surface due to ___________

(a) Uneven surface

(b) Softness

(c) Rust stains

(d) Popping

The question was asked in an internship interview.

This interesting question is from Defects in Plastering topic in chapter Pointing and Plastering of Construction & Building Materials

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Right option is (b) Softness

For explanation: The chief reason of such softness are due to thickness of the finishing coat, presence of deliquescent salts, excessive suction of the undercoat, etc. Hence, this leads to excessive dampness at certain points on the plastered surface makes that portion Soft.

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