Corrosion Investigation of Rock Anchors Served over 10 Years in Underground Powerhouse of a Hydropower Station

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Rating</td><td class="align_center">Rating standard</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">A</td><td class="align_center">Integrated cover layer</td></tr><tr><td class="align_left">B</td><td class="align_center">Exposed protective cap</td></tr><tr><td class="align_left">C</td><td class="align_center">Either anchorage plate or bearing plate is exposed</td></tr><tr><td class="align_left">D</td><td class="align_center">Both anchorage plate and bearing plate are exposed</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Description of exposure ratings of the anchor head structure.</div>

Advances in Materials Science and Engineering

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Table 7

Table 7: Corrosion Investigation of Rock Anchors Served over 10 Years in Underground Powerhouse of a Hydropower Station 