compatibility of ultra high performance concrete as repair material
compatibility of ultra high performance concrete as repair material
compatibility of ultra high performance concrete as repair material
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3.3.2 Slant-shear testThe slant-shear test w<strong>as</strong> designed to <strong>as</strong>sess the bond strength under compression andshear at early age due to the excellent results for the bond obtained from the splittingtensile test in a long-term <strong>performance</strong>. The main purpose <strong>of</strong> the test w<strong>as</strong> to study thebond strength at 8 days with a bond interface inclined at an angle <strong>of</strong> 60° and 70° fromhorizontal. Composite prisms, with a nominal dimension <strong>of</strong> 3.5x3.5x14 in, were made up<strong>of</strong> NSC and UHPC layers. At le<strong>as</strong>t, four samples were c<strong>as</strong>t for each c<strong>as</strong>e study at 8 days.Besides this, more specimens were c<strong>as</strong>t to study the bond strength at earlier age (2 or 3days) with a joint angle <strong>of</strong> 55°, 60° and 70° from horizontal. A full summary <strong>of</strong> the testedsamples is found in Chapter 4. Figure 3.3 shows the dimension <strong>of</strong> the composite slantshear samples.Figure 3.3 Detail <strong>of</strong> the slant-shear specimens49
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