Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength calcium silicate hydrate seed crystal reinforced epoxy composite cement grouting material and preparation method thereof
The invention discloses an early-strength calcium silicate hydrate seed crystal reinforced epoxy composite cement grouting material and a preparation method thereof, and belongs to the technical field of anti-seepage reinforcement of water-rich sand layer tunnels. The grouting material comprises a mineral composite cement base material, an epoxy admixture and a setting-control admixture, the addition amount of the epoxy additive is 3-7% of the mass of the mineral composite cement base material; and the addition amount of the setting-control admixture is 2-4% of the mass of the mineral composite cement base material. Water-borne epoxy resin is uniformly dispersed into cement paste, an epoxy resin polymer is crosslinked with a cement hydration product after being cured, so that a cement stone and polymer interpenetrating network structure is formed, and compared with an unmodified cement material, the cement paste is more compact in internal structure, lower in porosity and better in water resistance. The anti-permeability, the toughness and the corrosion resistance of the material can be effectively improved. The modified nano silicon dioxide is adopted to modify the epoxy resin, so that the strength and toughness of the epoxy resin are enhanced, and the performance of the epoxy cement is improved.
一种早强水化硅酸钙晶种增强环氧复合水泥注浆材料及其制备方法，属于富水砂层隧道的防渗加固技术领域。所述注浆材料包括矿物复合水泥基材、环氧外加剂和调凝外加剂；环氧外加剂添加量为矿物复合水泥基材质量的3～7％；调凝外加剂添加量为矿物复合水泥基材质量的2～4％。本发明采用水性环氧树脂均匀分散到水泥浆体中，环氧树脂聚合物固化后与水泥水化产物交联，从而形成水泥石与聚合物互穿网络结构，与未改性的水泥类材料相比其内部结构更为致密，孔隙率更低，能有效提高材料的抗渗性、韧性及耐腐蚀性。采用改性纳米二氧化硅对环氧树脂进行改性，增强了环氧树脂的强度与韧性来提升环氧水泥的性能。
Early-strength calcium silicate hydrate seed crystal reinforced epoxy composite cement grouting material and preparation method thereof
The invention discloses an early-strength calcium silicate hydrate seed crystal reinforced epoxy composite cement grouting material and a preparation method thereof, and belongs to the technical field of anti-seepage reinforcement of water-rich sand layer tunnels. The grouting material comprises a mineral composite cement base material, an epoxy admixture and a setting-control admixture, the addition amount of the epoxy additive is 3-7% of the mass of the mineral composite cement base material; and the addition amount of the setting-control admixture is 2-4% of the mass of the mineral composite cement base material. Water-borne epoxy resin is uniformly dispersed into cement paste, an epoxy resin polymer is crosslinked with a cement hydration product after being cured, so that a cement stone and polymer interpenetrating network structure is formed, and compared with an unmodified cement material, the cement paste is more compact in internal structure, lower in porosity and better in water resistance. The anti-permeability, the toughness and the corrosion resistance of the material can be effectively improved. The modified nano silicon dioxide is adopted to modify the epoxy resin, so that the strength and toughness of the epoxy resin are enhanced, and the performance of the epoxy cement is improved.
一种早强水化硅酸钙晶种增强环氧复合水泥注浆材料及其制备方法，属于富水砂层隧道的防渗加固技术领域。所述注浆材料包括矿物复合水泥基材、环氧外加剂和调凝外加剂；环氧外加剂添加量为矿物复合水泥基材质量的3～7％；调凝外加剂添加量为矿物复合水泥基材质量的2～4％。本发明采用水性环氧树脂均匀分散到水泥浆体中，环氧树脂聚合物固化后与水泥水化产物交联，从而形成水泥石与聚合物互穿网络结构，与未改性的水泥类材料相比其内部结构更为致密，孔隙率更低，能有效提高材料的抗渗性、韧性及耐腐蚀性。采用改性纳米二氧化硅对环氧树脂进行改性，增强了环氧树脂的强度与韧性来提升环氧水泥的性能。
Early-strength calcium silicate hydrate seed crystal reinforced epoxy composite cement grouting material and preparation method thereof
一种早强水化硅酸钙晶种增强环氧复合水泥注浆材料及其制备方法
HUANG HAILONG (Autor:in) / LING XIANCHANG (Autor:in) / GUO XIAOYU (Autor:in) / TANG LIANG (Autor:in) / KONG XIANGXUN (Autor:in) / HUANG YIYU (Autor:in) / LI YUYANG (Autor:in) / HU XINYU (Autor:in) / CONG SHENGYI (Autor:in) / TIAN SHUANG (Autor:in)
13.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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