Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for reducing rebound rate of tunnel sprayed concrete
The invention discloses a method for reducing the springback rate of tunnel sprayed concrete, which comprises the following steps: step 1, determining the standard mix proportion of concrete required by construction, namely the raw material dosage of each cubic meter of concrete; 2, calculating the mass fraction of silicon dioxide in the neutral silica sol; 3, testing the liquid absorption capacity of the super absorbent resin in the saturated calcium hydroxide solution; 4, neutral silica sol is added into the concrete raw materials in the step 1, and a concrete mixture is obtained; and 5, calculating the mixing amount of the super-absorbent resin, filling the super-absorbent resin into the spray head, mixing the concrete mixture with the super-absorbent resin at the spray head in proportion, and spraying the mixture to the rock wall. The invention relates to the technical field of tunnel engineering, and can solve the problems of concrete shrinkage caused by a method for reducing concrete injection springback in the prior art, complex components of a composition mixed with an accelerator and large calculation test amount.
本发明公开了一种降低隧道喷射混凝土回弹率的方法，包括以下步骤：步骤1：确定施工所需的混凝土基准配合比，即每立方混凝土的原材料用量；步骤2：计算中性硅溶胶中的二氧化硅质量分数；步骤3：测试超吸水树脂在饱和氢氧化钙溶液中的吸液能力；步骤4：将中性硅溶胶加入步骤1的混凝土原材料中，得到混凝土拌合物；步骤5：计算超吸水树脂的掺量，并在喷头中装入超吸水树脂，使混凝土拌合物在喷头处与超吸水树脂按比例混合后喷向岩壁。本发明涉及隧道工程技术领域，能够解决现有技术的降低混凝土喷射回弹方法导致混凝土收缩以及与速凝剂混合的组合物成分复杂和计算试验量大的问题。
Method for reducing rebound rate of tunnel sprayed concrete
The invention discloses a method for reducing the springback rate of tunnel sprayed concrete, which comprises the following steps: step 1, determining the standard mix proportion of concrete required by construction, namely the raw material dosage of each cubic meter of concrete; 2, calculating the mass fraction of silicon dioxide in the neutral silica sol; 3, testing the liquid absorption capacity of the super absorbent resin in the saturated calcium hydroxide solution; 4, neutral silica sol is added into the concrete raw materials in the step 1, and a concrete mixture is obtained; and 5, calculating the mixing amount of the super-absorbent resin, filling the super-absorbent resin into the spray head, mixing the concrete mixture with the super-absorbent resin at the spray head in proportion, and spraying the mixture to the rock wall. The invention relates to the technical field of tunnel engineering, and can solve the problems of concrete shrinkage caused by a method for reducing concrete injection springback in the prior art, complex components of a composition mixed with an accelerator and large calculation test amount.
本发明公开了一种降低隧道喷射混凝土回弹率的方法，包括以下步骤：步骤1：确定施工所需的混凝土基准配合比，即每立方混凝土的原材料用量；步骤2：计算中性硅溶胶中的二氧化硅质量分数；步骤3：测试超吸水树脂在饱和氢氧化钙溶液中的吸液能力；步骤4：将中性硅溶胶加入步骤1的混凝土原材料中，得到混凝土拌合物；步骤5：计算超吸水树脂的掺量，并在喷头中装入超吸水树脂，使混凝土拌合物在喷头处与超吸水树脂按比例混合后喷向岩壁。本发明涉及隧道工程技术领域，能够解决现有技术的降低混凝土喷射回弹方法导致混凝土收缩以及与速凝剂混合的组合物成分复杂和计算试验量大的问题。
Method for reducing rebound rate of tunnel sprayed concrete
降低隧道喷射混凝土回弹率的方法
ZHAO SHENGYING (Autor:in) / CHEN LI (Autor:in) / WANG MENG (Autor:in) / LIU XIAOFEI (Autor:in) / YANG XIN (Autor:in) / LIAN CHUNMING (Autor:in) / GUI QIANG (Autor:in) / HAN LU (Autor:in) / BAI JIE (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
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