Compression Performance and Calculation Method of Thin-Walled Prefabricated Steel Tube Lightweight Concrete Columns

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Strength grade</td><td class="align_center">LC20</td><td class="align_center">LC25</td><td class="align_center">LC30</td></tr><tr><td class="align_left" colspan="4"><hr/></td></tr><tr><td class="align_left">Block No. 1</td><td class="align_center">21.6</td><td class="align_center">25.8</td><td class="align_center">31.2</td></tr><tr><td class="align_left">Block No. 2</td><td class="align_center">20.3</td><td class="align_center">26.7</td><td class="align_center">33.5</td></tr><tr><td class="align_left">Block No. 3</td><td class="align_center">22.4</td><td class="align_center">24.8</td><td class="align_center">30.7</td></tr><tr><td class="align_left">Average</td><td class="align_center">21.4</td><td class="align_center">25.8</td><td class="align_center">31.8</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Compressive strength of the lightweight concrete (unit: MPa).</div>

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Table 3

Table 3: Compression Performance and Calculation Method of Thin-Walled Prefabricated Steel Tube Lightweight Concrete Columns 