Water proof mortar: This mortar is water proof and it is prepared by mixing one part of cement and two parts of sand and pulverised alum at the rate of 120 N per m3 sand. - Study24x7
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25 Apr 2019 09:52 AM study24x7 study24x7

Water proof mortar: This mortar is water proof and it is prepared by mixing one part of cement and two parts of sand and pulverised alum at the rate of 120 N per m3 sand.

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