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A platform for research: civil engineering, architecture and urbanism
Dispersion-resistant fine aggregate concrete for synchronous grouting of TBM (tunnel boring machine) and preparation method of dispersion-resistant fine aggregate concrete
The invention belongs to the field of filling materials behind TBM (tunnel boring machine) tunnel walls of urban subways, and discloses anti-dispersion fine aggregate concrete for synchronous grouting of TBM tunnels and a preparation method of the anti-dispersion fine aggregate concrete, and the water dispersion resistance and toughness of the concrete are improved by regulating and controlling the dosage of each raw material component of the concrete and additives. In addition, the concrete material is poured at a time to replace the traditional two wall-back filling processes of gravel filling and wall-back grouting, the compactness of wall-back filling is improved, and the influence on the segment structure is reduced. Meanwhile, the concrete can be used for high-added-value utilization of resources such as multi-source solid waste and urban construction waste. The material has the characteristics of good water dispersion resistance, short setting time and excellent mechanical property, is beneficial to improving the underwater retention rate of the material and the overall mechanical property and impermeability of a tunnel, and has important practical significance for controlling the displacement of duct pieces, improving the backfill effect and ensuring the construction safety.
本发明属于城市地铁TBM隧道壁后充填材料领域，公开了一种用于TBM隧道同步注浆的抗分散细石混凝土及其制备方法，通过对混凝土各原料组分用量及外加剂的调控，提高了混凝土的抗水分散性和韧性。此外，通过一次性灌注该混凝土材料取代传统的碎石充填与壁后注浆两道壁后充填工艺，提高了壁后充填的密实度并降低对管片结构的影响。同时，该混凝土对多源固废与城市建筑垃圾等资源进行高附加值利用。该材料具有抗水分散能力好、凝结时间短、力学性能优异的特性，有利于提高材料水下留存率与隧道整体力学性能及抗渗性，对于控制管片位移、提高壁后充填效果与保证施工安全具有重要的现实意义。
Dispersion-resistant fine aggregate concrete for synchronous grouting of TBM (tunnel boring machine) and preparation method of dispersion-resistant fine aggregate concrete
The invention belongs to the field of filling materials behind TBM (tunnel boring machine) tunnel walls of urban subways, and discloses anti-dispersion fine aggregate concrete for synchronous grouting of TBM tunnels and a preparation method of the anti-dispersion fine aggregate concrete, and the water dispersion resistance and toughness of the concrete are improved by regulating and controlling the dosage of each raw material component of the concrete and additives. In addition, the concrete material is poured at a time to replace the traditional two wall-back filling processes of gravel filling and wall-back grouting, the compactness of wall-back filling is improved, and the influence on the segment structure is reduced. Meanwhile, the concrete can be used for high-added-value utilization of resources such as multi-source solid waste and urban construction waste. The material has the characteristics of good water dispersion resistance, short setting time and excellent mechanical property, is beneficial to improving the underwater retention rate of the material and the overall mechanical property and impermeability of a tunnel, and has important practical significance for controlling the displacement of duct pieces, improving the backfill effect and ensuring the construction safety.
本发明属于城市地铁TBM隧道壁后充填材料领域，公开了一种用于TBM隧道同步注浆的抗分散细石混凝土及其制备方法，通过对混凝土各原料组分用量及外加剂的调控，提高了混凝土的抗水分散性和韧性。此外，通过一次性灌注该混凝土材料取代传统的碎石充填与壁后注浆两道壁后充填工艺，提高了壁后充填的密实度并降低对管片结构的影响。同时，该混凝土对多源固废与城市建筑垃圾等资源进行高附加值利用。该材料具有抗水分散能力好、凝结时间短、力学性能优异的特性，有利于提高材料水下留存率与隧道整体力学性能及抗渗性，对于控制管片位移、提高壁后充填效果与保证施工安全具有重要的现实意义。
Dispersion-resistant fine aggregate concrete for synchronous grouting of TBM (tunnel boring machine) and preparation method of dispersion-resistant fine aggregate concrete
一种用于TBM隧道同步注浆的抗分散细石混凝土及其制备方法
ZHU ZHIJING (author) / LIU RENTAI (author) / TANG HAOTIAN (author) / LI SHUCAI (author) / LI WEIHAO (author) / LIU PENG (author) / CHEN MENGJUN (author) / BAI JIWEN (author) / XU XIANJIE (author) / WANG MENG (author)
2023-10-31
Patent
Electronic Resource
Chinese
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