Development of a New Type of Alkali-Free Liquid Accelerator for Wet Shotcrete in Coal Mine and Its Engineering Application

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/amse/volume-2015/813052/figures/813052.fig.007a.svgz" name="813052.fig.007a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Sample 1</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/amse/volume-2015/813052/figures/813052.fig.007b.svgz" name="813052.fig.007b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Sample 2</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/amse/volume-2015/813052/figures/813052.fig.007c.svgz" name="813052.fig.007c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Sample 3</td></tr></table>

<div>New cement grout just added accelerator.</div>

Advances in Materials Science and Engineering

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Figure 7

Figure 7: Development of a New Type of Alkali-Free Liquid Accelerator for Wet Shotcrete in Coal Mine and Its Engineering Application 