why green colour formation on the surface of concrete and
plastered surface takes place after curing?
Answer Posted / kishore bangaru vvvem
ITS INDICATED GOOD CURING
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if a pipe those configuration (ASTM c 76 class b 450mm dia 2500mm length) fixing for water course those lining of water is 7000 running meter. my question is that if 8 joints of pipe ls leakage and we have not permission to stop the water so which treatment we apply on joint in that in condition.
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