Why can you estimate the creep of the same concrete

Question

Problem

Using the principle of superposition, consider the following conditions for a 33 MPa compressive strength concrete (justify your answers):

(a) The basic creep of the concrete at 28 days is 300 × 10^-6 under a compressive load of 7 MPa. Can you estimate the basic creep of the same concrete at 90 days under a compressive load of 7 MPa?

(b) The basic creep of the concrete at 28 days is 300 × 10^-6 under a compressive load of 7 MPa. Can you estimate the basic creep of the same concrete at 28 days under a compressive load of 11 MPa?

(c) The basic creep of the concrete at 90 days is 1200 × 10^-6 under a compressive load of 27 MPa. Can you estimate the basic creep of the same concrete at 90 days under a compressive load of 7 MPa?

(d) The basic creep of the concrete at 28 days is 300 × 10^-6 under a compressive load of 7 MPa. The drying shrinkage (50 percent R.H.) at 28 days is 100 × 10^-6. Can you estimate the creep of the same concrete at 28 days under a compressive load of 11 MPa and exposed to 50 percent R.H.?

(e) The basic creep of the concrete at 28 days is 300 × 10^-6 under a compressive load of 7 MPa. The drying shrinkage (50 percent R.H.) at 28 days is 100 × 10^-6. Can you estimate the basic creep of the same concrete at 28 days under a compressive load of 27 MPa?

The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.