Properties and Applications of a New Chemical Grouting Material

<table class="table-group" id="tab10"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Distress grade</td><td class="align_center">Classification of distress</td><td class="align_center">Physical truth of lining leakage</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">Slight (c)</td><td class="align_center">Leakage water corrodes rails and worsens the track bed condition. Curing cycle is shortened. Distress will develop to level B.</td></tr><tr><td class="align_left">2</td><td class="align_center">Serious (B)</td><td class="align_center">Dripping and seeping water in tunnels which cause track bed frost boiling.</td></tr><tr><td class="align_left">3</td><td class="align_center">More serious (AI)</td><td class="align_center">Tunnel vault emits water and drops into a line. Rising soil is serious, which affects the normal operation.</td></tr><tr><td class="align_left">4</td><td class="align_center">Extremely serious (AA)</td><td class="align_center">Water accumulates in the electric traction section. Tunnel vault leakage flows to overhead lines directly.</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Quantitative index of leakage distress in railway tunnels.</div>

Advances in Civil Engineering

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Table 10

Table 10: Properties and Applications of a New Chemical Grouting Material 