Fig. 3.

Scaling of the contact creep modulus C with (A) the indentation modulus M (C = 1.387 (M/Gpa)1.404;R² = 0.8710), (B) the indentation hardness H (C = 200.1H; R² = 0.9385), and c the packing density η for the 9 cement-based materials here investigated. Data points for M, H, and C were obtained from the deconvolution process (Fig. 2 A–C), and identified as the mechanical phase properties of LD C–S–H, HD C–S–H and UHD C–S–H. The large symbols are the mean values and the error bars represent the standard deviation of the phase values of the 9 tested materials. (D) Volume fractions of LD C–S–H, HD C–S–H and UHD C–S–H, as determined from the deconvolution process for a selected number of materials that differ only in the w/c mass ratio.