Tennis court, subjected to freezing Required design strength =21 MPa Slab thickness=300 mm Statistical data indicate a standard deviation of compressive strength of 3.7 MPa is expected (for 50 samples) Only air entrainer is allowed Available materials: Air=7%
Tennis court, subjected to freezing
Required design strength =21 MPa
Slab thickness=300 mm
Statistical data indicate a standard deviation of compressive strength of 3.7 MPa is expected (for 50 samples)
Only air entrainer is allowed
Available materials:
Air=7%
Air entertainer: Manufacturer specification is 9.0 ML /1% air/100kg cement
Slump=50 mm
Coarse aggregate: 50 mm nominal maximum size, crushed stone
Bulk volume oven-dry specific gravity=2.61, absorption=2.8%, oven-dry rodded density=1870 kg/m3
Moisture content=1%
Fine aggregate: Natural sand
Bulk oven-dry specific gravity=2.54, absorption=3.4%
Moisture content= 4.5%
Fineness modulus=2.60
Cement: Type I, relative density=3.1
What is the maximum coarse aggregate size?
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