Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Waterproof sprayed concrete for underground large-span chamber and construction method
The invention discloses waterproof shotcrete for an underground large-span chamber. The concrete is prepared from the following components in parts by weight: 480 to 500 parts of cement, 753.6 to 785 parts of sand, 811.2 to 845 parts of stone, 172.8 to 180 parts of water, 9.6 to 10 parts of a water reducing agent, 28.8 to 30 parts of an accelerator and 24 to 25 parts of a waterproof agent, the invention further relates to a construction method of the waterproof shotcrete for the underground large-span chamber, which comprises the following steps of: mixing the waterproof shotcrete, loading and transporting the waterproof shotcrete by a concrete tank truck, performing shotcrete operation by adopting a mode of primary shotcrete one-time forming and re-shotcrete layering operation, and finally curing the concrete. The concrete disclosed by the invention has the advantages of small dry shrinkage, high waterproof performance and high durability, and the construction method is matched in engineering, so that the waterproof requirement in the engineering can be met, the construction progress can be accelerated, and the construction cost can be saved.
本发明公开了一种地下大跨硐室防水喷射混凝土，混凝土包括如下以重量份数计的组分：水泥480‑500份，砂753.6‑785份，石811.2‑845份，水172.8‑180份，减水剂9.6‑10份，速凝剂28.8‑30份，防水剂24‑25份；本发明还涉及一种地下大跨硐室防水喷射混凝土的施工方法，该方法为：先拌合好防水喷射混凝土，再由混凝土罐车进行装料运输,然后采取初喷一次成型，复喷分层作业的方式进行喷射混凝土作业，最后进行混凝土的养护。本发明的混凝土具有混凝土的干缩减少、防水性能和耐久性高的优点，工程中配合使用上述的施工方法，既能满足工程中的防水要求，也能加快施工进度，节约施工成本。
Waterproof sprayed concrete for underground large-span chamber and construction method
The invention discloses waterproof shotcrete for an underground large-span chamber. The concrete is prepared from the following components in parts by weight: 480 to 500 parts of cement, 753.6 to 785 parts of sand, 811.2 to 845 parts of stone, 172.8 to 180 parts of water, 9.6 to 10 parts of a water reducing agent, 28.8 to 30 parts of an accelerator and 24 to 25 parts of a waterproof agent, the invention further relates to a construction method of the waterproof shotcrete for the underground large-span chamber, which comprises the following steps of: mixing the waterproof shotcrete, loading and transporting the waterproof shotcrete by a concrete tank truck, performing shotcrete operation by adopting a mode of primary shotcrete one-time forming and re-shotcrete layering operation, and finally curing the concrete. The concrete disclosed by the invention has the advantages of small dry shrinkage, high waterproof performance and high durability, and the construction method is matched in engineering, so that the waterproof requirement in the engineering can be met, the construction progress can be accelerated, and the construction cost can be saved.
本发明公开了一种地下大跨硐室防水喷射混凝土，混凝土包括如下以重量份数计的组分：水泥480‑500份，砂753.6‑785份，石811.2‑845份，水172.8‑180份，减水剂9.6‑10份，速凝剂28.8‑30份，防水剂24‑25份；本发明还涉及一种地下大跨硐室防水喷射混凝土的施工方法，该方法为：先拌合好防水喷射混凝土，再由混凝土罐车进行装料运输,然后采取初喷一次成型，复喷分层作业的方式进行喷射混凝土作业，最后进行混凝土的养护。本发明的混凝土具有混凝土的干缩减少、防水性能和耐久性高的优点，工程中配合使用上述的施工方法，既能满足工程中的防水要求，也能加快施工进度，节约施工成本。
Waterproof sprayed concrete for underground large-span chamber and construction method
一种地下大跨硐室防水喷射混凝土及施工方法
DAI GUOAN (Autor:in) / FAN ZHONGBO (Autor:in) / SONG ZHONGSHUANG (Autor:in) / LIU SHUAITAO (Autor:in) / YANG MING (Autor:in) / HONG WENJIN (Autor:in) / ZHANG YUNHAO (Autor:in) / WANG XIANMIN (Autor:in)
11.10.2022
Patent
Elektronische Ressource
Chinesisch
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