Mechanisms of placement in sprayed concrete
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- 作者：Nicolas Ginousea ; nginouse@kpmindustries.com" class="auth_mail" title="E-mail the corresponding author ; Marc Jolinb ; marc.jolin@gci.ulaval.ca" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ground support ; Sprayed concrete ; Shotcrete ; Placement process ; Rebound ; Impact ; Material distribution
- 刊名：Tunnelling and Underground Space Technology
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：58
- 期：Complete
- 页码：177-185
- 全文大小：2831 K
文摘
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The local placement of shotcrete impacting a receiving surface was investigated.
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Spatial distribution of sprayed concrete placement and composition were revealed.
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There is evidence of a Gaussian-type placement distribution around the spray axis.
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There is evidence of a rich binder layer in the impact peripheral zones.
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The measurements validity was confirmed using the mass conservation law.