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The _________ is a mixture of cement and sand, the usual proposition being 1:3.

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The _________ is a mixture of cement and sand, the usual proposition being 1:3.

(a) Grout

(b) Mortar

(c) Slurry

(d) Gunite

The question was asked in an international level competition.

I would like to ask this question from Placing of Concrete in section Cement Concrete Construction of Construction & Building Materials

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The correct option is (d) Gunite

The explanation: A cement gun is used to deposit the Gunite on the concrete surface under a pressure off about 22 N/cm^2 to 30 N/cm^2. The cement is mixed with slightly moist sand and the necessary water is added as the mixture comes out from the cement gun.

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