The "SV 40" concrete is a typical high strength concrete used in bridges in Norway, and it has a water-binder ratio (w/b) of 0.42 with 5% silica fume (percentage of OPC weight).
The development of the compressive strength, tensile strength, and modulus of elasticity for SV 40 and low-heat concrete are shown in Figures 2 and 3.
The maximum temperature for SV 40 and low-heat concrete was 56 and 45[degrees]C, respectively, with an initial temperature of 20[degrees]C, while the maximum temperature for low-heat concrete was 33[degrees]C with the initial temperature of 11[degrees]C.
For the SV 40 concrete, the creep tests were carried out with loading time at 2 and 9 days, respectively, and is shown in Figure 6(a); the model is in good agreement with the experimental results.
The imposed temperature histories and measured stress developments in the TSTM for SV 40 and low-heat concrete are shown in Figures 9(a), 10(a), and 11(a), and the strain developments in Dilation Rig and TSTM are shown in Figures 9(b), 10(b), and 11(b).
The comparisons of calculated and measured stress development for SV 40 concrete are shown in Figure 12, and the development of the compressive stress in the first 2 days is in good agreement with the test results, but the development of the tensile stress afterwards is lower than the test results.
Caption: Figure 2: Compressive strength, E-modulus, and tensile strength of SV 40 concrete.
Caption: Figure 4: Heat evolutions of SV 40 and low-heat concrete.
Caption: Figure 9: Test results of TSTM and Dilation Rig for SV 40 concrete.