Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Expansion type composite capsule and self-repairing cement-based material
The invention discloses an expansion type composite capsule and a self-repairing cement-based material, and relates to a cement-based material. The expansion type composite capsule comprises a capsule core and a capsule wall, the capsule wall is composed of epoxy resin and fine sand, the capsule core comprises an adhesive and a repairing agent, the adhesive adopts a geopolymer generated by reaction of first-grade fly ash and second-mode sodium silicate, and the repairing agent comprises a magnesium oxide expanding agent. The self-repairing cement-based material is prepared from the following raw materials in parts by weight: 530-810 parts of cement, 186-284 parts of water, 795-1215 parts of river sand, 30-233 parts of expansive composite capsules, 0-8 parts of polyvinyl alcohol fibers and 3-5 parts of a polycarboxylic acid type high-efficiency water reducing agent, the self-repairing cement-based material is prepared by stirring, molding and curing, the water-cement ratio is 0.35, and the sand-cement ratio is 2. The expansive composite capsule is excellent in performance, is in a dormant state before cracks are generated, and responds after the cracks are generated, so that the problem that minerals are easily consumed too early in a matrix is solved, and the cement-based material has long-term self-repairing capability.
一种膨胀型复合胶囊及自修复水泥基材料，涉及一种水泥基材料。膨胀型复合胶囊包括囊芯和囊壁，囊壁由环氧树脂和细砂组成，囊芯包括黏结剂和修复剂，黏结剂采用一级粉煤灰和二模硅酸钠反应生成的地聚物，修复剂包括氧化镁膨胀剂。自修复水泥基材料按原材料重量份数计由530‑810份水泥、186‑284份水、795‑1215份河砂、30‑233份膨胀型复合胶囊、0‑8份聚乙烯醇纤维和3‑5份聚羧酸系高效减水剂组成，经搅拌、成型及养护制备而成，水胶比为0.35，砂胶比为2。膨胀型复合胶囊性能优越，裂缝产生前处于休眠状态，开裂后才做出响应，解决了矿物在基体中易被过早消耗的问题，水泥基材料具备长期自修复能力。
Expansion type composite capsule and self-repairing cement-based material
The invention discloses an expansion type composite capsule and a self-repairing cement-based material, and relates to a cement-based material. The expansion type composite capsule comprises a capsule core and a capsule wall, the capsule wall is composed of epoxy resin and fine sand, the capsule core comprises an adhesive and a repairing agent, the adhesive adopts a geopolymer generated by reaction of first-grade fly ash and second-mode sodium silicate, and the repairing agent comprises a magnesium oxide expanding agent. The self-repairing cement-based material is prepared from the following raw materials in parts by weight: 530-810 parts of cement, 186-284 parts of water, 795-1215 parts of river sand, 30-233 parts of expansive composite capsules, 0-8 parts of polyvinyl alcohol fibers and 3-5 parts of a polycarboxylic acid type high-efficiency water reducing agent, the self-repairing cement-based material is prepared by stirring, molding and curing, the water-cement ratio is 0.35, and the sand-cement ratio is 2. The expansive composite capsule is excellent in performance, is in a dormant state before cracks are generated, and responds after the cracks are generated, so that the problem that minerals are easily consumed too early in a matrix is solved, and the cement-based material has long-term self-repairing capability.
一种膨胀型复合胶囊及自修复水泥基材料，涉及一种水泥基材料。膨胀型复合胶囊包括囊芯和囊壁，囊壁由环氧树脂和细砂组成，囊芯包括黏结剂和修复剂，黏结剂采用一级粉煤灰和二模硅酸钠反应生成的地聚物，修复剂包括氧化镁膨胀剂。自修复水泥基材料按原材料重量份数计由530‑810份水泥、186‑284份水、795‑1215份河砂、30‑233份膨胀型复合胶囊、0‑8份聚乙烯醇纤维和3‑5份聚羧酸系高效减水剂组成，经搅拌、成型及养护制备而成，水胶比为0.35，砂胶比为2。膨胀型复合胶囊性能优越，裂缝产生前处于休眠状态，开裂后才做出响应，解决了矿物在基体中易被过早消耗的问题，水泥基材料具备长期自修复能力。
Expansion type composite capsule and self-repairing cement-based material
一种膨胀型复合胶囊及自修复水泥基材料
GUAN XINCHUN (Autor:in) / LI JINGLU (Autor:in) / BAI SHUAI (Autor:in)
11.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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