Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-ductility cement-based composite material and preparation method thereof
The invention provides a high-ductility cement-based composite material, which is prepared from the following components in parts by weight: 20 to 30 parts of Portland cement, 25 to 45 parts of fly ash, 10 to 20 parts of mineral powder, 1 to 2 parts of PP (Propene Polymer) fiber, 0.5 to 1 part of polycarboxylic acid high-performance water reducing agent, 1 to 10 parts of 40 to 70-mesh quartz sand, 5 to 10 parts of 70 to 100-mesh quartz sand, 0.1 to 0.5 part of polyacrylamide and 15 to 20 parts of water. The modified PP fibers are PP fibers modified by nano calcium carbonate, nano silicon dioxide and a coupling agent; the preparation method comprises the following steps: respectively weighing the Portland cement, the fly ash, the mineral powder, the quartz sand and the polyacrylamide, and carrying out dry mixing in proportion to obtain a dry mixture; adding a polycarboxylic acid high-performance water reducing agent and water into the dry mixture in at least two times, stirring, finally adding the modified PP fiber, and continuously stirring to obtain the cement-based composite material. The composite material not only has excellent mechanical properties, can improve the strength and durability of the structure, but also has high ductility and high strength.
本发明提供了一种高延性水泥基复合材料，按重量份数计，包括硅酸盐水泥20‑30份、粉煤灰25‑45份、矿粉10‑20份、PP纤维1‑2份，聚羧酸高性能减水剂0.5‑1份、40‑70目石英砂1‑10份、70‑100目石英砂5‑10份、聚丙烯酰胺0.1‑0.5份、水15‑20份；所述改性PP纤维为通过纳米碳酸钙、纳米二氧化硅及偶联剂改性的PP纤维；其制备方法，包括以下步骤：分别称取硅酸盐水泥、粉煤灰、矿粉、石英砂和聚丙烯酰胺按比例干拌，得到干混料；然后将聚羧酸高性能减水剂、水，分至少两次加入干混料内进行搅拌，最后加入改性PP纤维，继续搅拌，即得水泥基复合材料；其不仅具有优异的力学性能，可以提高结构的强度和耐久性，且具有高延性和高强度。
High-ductility cement-based composite material and preparation method thereof
The invention provides a high-ductility cement-based composite material, which is prepared from the following components in parts by weight: 20 to 30 parts of Portland cement, 25 to 45 parts of fly ash, 10 to 20 parts of mineral powder, 1 to 2 parts of PP (Propene Polymer) fiber, 0.5 to 1 part of polycarboxylic acid high-performance water reducing agent, 1 to 10 parts of 40 to 70-mesh quartz sand, 5 to 10 parts of 70 to 100-mesh quartz sand, 0.1 to 0.5 part of polyacrylamide and 15 to 20 parts of water. The modified PP fibers are PP fibers modified by nano calcium carbonate, nano silicon dioxide and a coupling agent; the preparation method comprises the following steps: respectively weighing the Portland cement, the fly ash, the mineral powder, the quartz sand and the polyacrylamide, and carrying out dry mixing in proportion to obtain a dry mixture; adding a polycarboxylic acid high-performance water reducing agent and water into the dry mixture in at least two times, stirring, finally adding the modified PP fiber, and continuously stirring to obtain the cement-based composite material. The composite material not only has excellent mechanical properties, can improve the strength and durability of the structure, but also has high ductility and high strength.
本发明提供了一种高延性水泥基复合材料，按重量份数计，包括硅酸盐水泥20‑30份、粉煤灰25‑45份、矿粉10‑20份、PP纤维1‑2份，聚羧酸高性能减水剂0.5‑1份、40‑70目石英砂1‑10份、70‑100目石英砂5‑10份、聚丙烯酰胺0.1‑0.5份、水15‑20份；所述改性PP纤维为通过纳米碳酸钙、纳米二氧化硅及偶联剂改性的PP纤维；其制备方法，包括以下步骤：分别称取硅酸盐水泥、粉煤灰、矿粉、石英砂和聚丙烯酰胺按比例干拌，得到干混料；然后将聚羧酸高性能减水剂、水，分至少两次加入干混料内进行搅拌，最后加入改性PP纤维，继续搅拌，即得水泥基复合材料；其不仅具有优异的力学性能，可以提高结构的强度和耐久性，且具有高延性和高强度。
High-ductility cement-based composite material and preparation method thereof
一种高延性水泥基复合材料及其制备方法
YU ZHONGHUA (Autor:in) / WANG JIE (Autor:in) / XIAO DONG (Autor:in) / DENG DAHUA (Autor:in) / ZHOU ZHIWEI (Autor:in) / LIU JIE (Autor:in) / TAN QI (Autor:in) / LIU JIAXIN (Autor:in)
12.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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