Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tunnel backfill grouting material with self-repairing function and preparation method
The invention discloses a tunnel backfill grouting material with a self-repairing function and a preparation method. The grouting material is formed by mixing a high-silicon-aluminum-content grouting base material, sodium silicate, calcium oxide, a self-repairing capsule and water according to the mass ratio of (2.0-5.0): (1.0-1.5): 1.0: (0.08-0.45): (3.2-9.0). The self-repairing capsule comprises a capsule A and a capsule B, the thickness of a shell is 0.105 +/-0.005 mm, and the self-repairing capsule is composed of ethyl cellulose and urea resin according to the mass ratio of 10.0-20.0; the capsule cavity A contains sodium silicate, sodium hydroxide and potassium hydroxide in a mass ratio of 1.0: (0.007-0.014): (0.003-0.006); quick lime and hydroxyl graphene oxide are contained in a cavity B of the capsule, and the mass ratio of the quick lime to the hydroxyl graphene oxide is 100.0: (0.001-0.01). The self-repairing function refers to that after the tunnel wall post-grouting impermeable layer is fractured under load, the capsule A and the capsule B are cracked, sodium silicate is dissolved in an alkaline environment and reacts with calcium hydroxide generated by hydration of quick lime to form hydrated calcium silicate gel, and then the tunnel wall post-grouting impermeable layer is repaired. Grouting layer cracks and holes are jointly filled with covalent polymerization gel formed by decomposition and polycondensation of silicon-aluminum components in the grouting material, and the purpose of tunnel anti-seepage self-repairing is achieved.
一种具有自修复功能的隧道壁后注浆材料及制备方法。所述注浆材料由高硅铝含量注浆基材、硅酸钠、氧化钙、自修复胶囊和水混合形成，质量比为2.0‑5.0：1.0‑1.5：1.0：0.08‑0.45：3.2‑9.0。所述自修复胶囊包括胶囊A和胶囊B，壳体厚度为0.105±0.005mm，由质量比为10.0‑20.0的乙基纤维素和脲醛树脂构成；所述胶囊A腔内含硅酸钠、氢氧化钠、氢氧化钾，质量比为1.0:0.007‑0.014:0.003‑0.006；所述胶囊B腔内含生石灰和羟基氧化石墨烯，质量比为100.0：0.001‑0.01。本发明自修复功能指隧道壁后注浆防渗层受荷破裂后，胶囊A和胶囊B随之裂开，硅酸钠在碱性环境下溶解，与生石灰水化生成的氢氧化钙反应形成水化硅酸钙凝胶，和注浆材料中硅铝成分解缩聚形成的共价聚合凝胶共同充填注浆层裂隙与孔洞，达到隧道防渗自修复目的。
Tunnel backfill grouting material with self-repairing function and preparation method
The invention discloses a tunnel backfill grouting material with a self-repairing function and a preparation method. The grouting material is formed by mixing a high-silicon-aluminum-content grouting base material, sodium silicate, calcium oxide, a self-repairing capsule and water according to the mass ratio of (2.0-5.0): (1.0-1.5): 1.0: (0.08-0.45): (3.2-9.0). The self-repairing capsule comprises a capsule A and a capsule B, the thickness of a shell is 0.105 +/-0.005 mm, and the self-repairing capsule is composed of ethyl cellulose and urea resin according to the mass ratio of 10.0-20.0; the capsule cavity A contains sodium silicate, sodium hydroxide and potassium hydroxide in a mass ratio of 1.0: (0.007-0.014): (0.003-0.006); quick lime and hydroxyl graphene oxide are contained in a cavity B of the capsule, and the mass ratio of the quick lime to the hydroxyl graphene oxide is 100.0: (0.001-0.01). The self-repairing function refers to that after the tunnel wall post-grouting impermeable layer is fractured under load, the capsule A and the capsule B are cracked, sodium silicate is dissolved in an alkaline environment and reacts with calcium hydroxide generated by hydration of quick lime to form hydrated calcium silicate gel, and then the tunnel wall post-grouting impermeable layer is repaired. Grouting layer cracks and holes are jointly filled with covalent polymerization gel formed by decomposition and polycondensation of silicon-aluminum components in the grouting material, and the purpose of tunnel anti-seepage self-repairing is achieved.
一种具有自修复功能的隧道壁后注浆材料及制备方法。所述注浆材料由高硅铝含量注浆基材、硅酸钠、氧化钙、自修复胶囊和水混合形成，质量比为2.0‑5.0：1.0‑1.5：1.0：0.08‑0.45：3.2‑9.0。所述自修复胶囊包括胶囊A和胶囊B，壳体厚度为0.105±0.005mm，由质量比为10.0‑20.0的乙基纤维素和脲醛树脂构成；所述胶囊A腔内含硅酸钠、氢氧化钠、氢氧化钾，质量比为1.0:0.007‑0.014:0.003‑0.006；所述胶囊B腔内含生石灰和羟基氧化石墨烯，质量比为100.0：0.001‑0.01。本发明自修复功能指隧道壁后注浆防渗层受荷破裂后，胶囊A和胶囊B随之裂开，硅酸钠在碱性环境下溶解，与生石灰水化生成的氢氧化钙反应形成水化硅酸钙凝胶，和注浆材料中硅铝成分解缩聚形成的共价聚合凝胶共同充填注浆层裂隙与孔洞，达到隧道防渗自修复目的。
Tunnel backfill grouting material with self-repairing function and preparation method
一种具有自修复功能的隧道壁后注浆材料及制备方法
GU LEILEI (Autor:in) / WANG SHENGNIAN (Autor:in) / JIANG HAIYAN (Autor:in) / ZHANG MEI (Autor:in) / ZHANG PENG (Autor:in) / JI JIUFA (Autor:in) / WANG WENJIE (Autor:in) / HUI HONGLEI (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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