– Test data are given in Table

– Test data are given in Table P7.45 for Portland cement concrete, made with Thames Valley flint gravel as the aggregate, under simple tension, simple compression, and compression with lateral pressure. The values of σ3 correspond to failure, which occurred as distinct fractures for lateral pressures of zero and 2.5 MPa. For the higher lateral pressures, the peak compressive stress occurred after considerable nonlinear deformation, with an array of internal splitting cracks being observed. The tests were done after 56 days of aging, and any water appearing in compression was allowed to drain from the ends of the specimen. Proceed as in Ex. 7.7 for these data - Test data are given in Table P7.45 for Portland cement concrete, made with Thames Valley flint...

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