
Sand Extraction 1 Introduction Greenfacts
Introduction sand and gravel are used extensively in construction in the preparation of concrete for each tonne of cement the building industry needs about six to seven times more tonnes of sand and gravel usgs 2013b thus the worlds use of aggregates for concrete can be estimated at 259 billion to 296 billion tonnes a year for 2012 alone
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How Much Sand And Gravel For Concrete 25 M3
Concrete calculator estimate cement sand gravel example calculation estimate the quantity of cement sand and stone aggregate required for 1 cubic meter of 124 concrete mix ans materials required are 7 nos of 50 kg bag of cement 042 m 3 of sand and 083 m 3 of stone aggregate
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How It Works Concrete Popular Mechanics
Oct 01 2009 to make 1 cubic yard of concrete youd need seven 94pound bags of cement about 12 cubic yard of sand and just over 34 cubic yard of gravel the amount of
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