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Stone grits used for 1st coat and 2nd surface painting may be precoated in advance with advance with bitumen.

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Stone grits used for 1st coat and 2nd surface painting may be precoated in advance with advance with bitumen.

(a) True

(b) False

I had been asked this question in a job interview.

Question is taken from General Specifications of Modern Road topic in division Specifications, Estimation of Quantities of Materials and Transport of Civil Engineering Drawing

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Correct answer is (a) True

Easiest explanation: Precoating prevents separation and disintegration of grits and improves the life of the road. For precoating stone grits 12kg to 16 kg of asphalt or road tar per cu m of grit may be used.

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