Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lightweight high-strength concrete and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to lightweight high-strength concrete and a preparation method thereof. The product developed by the invention comprises a flaky silicate filler, wherein polydimethylaminoethyl methacrylate is grafted on the surfaces of single layer structures of the flaky silicate filler; gelatin with the isoelectric point lower than 7.0 is filled between the single layer structures. Wherein metal ions in the flaky silicate skeleton are at least partially substituted by hydrogen ions. In addition, an elastomer emulsion is also dispersed in the gelatin; and the elastomer emulsion is a room-temperature vulcanized silicone rubber emulsion. According to the product obtained by the invention, in a cement hydration process, sheet structures of the sheet silicate filler can be propped open and fixed, so that a moisture diffusion channel is formed inside, and after cement is hydrated and in a water permeation process,volume expansion to a certain extent can occur, so that relative negative pressure is formed inside the pervious concrete, and the water permeability of the pervious concrete is improved. And rapid downward permeation and diffusion of water are facilitated.
本发明属于建筑材料技术领域，具体涉及一种轻质高强混凝土及其制备方法。本发明研制的产品中，包括片状硅酸盐填料；所述片状硅酸盐填料的单片层结构表面接枝有聚甲基丙烯酸二甲氨基乙酯；所述单片层结构之间填充有等电点低于7.0的明胶。其中，片状硅酸盐骨架中金属离子至少部分被氢离子取代。另外，明胶中还分散有弹性体乳液；所述弹性体乳液为室温硫化硅橡胶乳液。本发明所得产品可以在水泥水化过程中，使得片状硅酸盐填料的片状结构之间被撑开并固定，从而在内部形成水分扩散的通道，且在水泥完成水化后，在透水过程中，可以发生一定程度的体积膨胀，使得透水混凝土内部形成相对负压，有利于水分快速向下渗透扩散。
Lightweight high-strength concrete and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to lightweight high-strength concrete and a preparation method thereof. The product developed by the invention comprises a flaky silicate filler, wherein polydimethylaminoethyl methacrylate is grafted on the surfaces of single layer structures of the flaky silicate filler; gelatin with the isoelectric point lower than 7.0 is filled between the single layer structures. Wherein metal ions in the flaky silicate skeleton are at least partially substituted by hydrogen ions. In addition, an elastomer emulsion is also dispersed in the gelatin; and the elastomer emulsion is a room-temperature vulcanized silicone rubber emulsion. According to the product obtained by the invention, in a cement hydration process, sheet structures of the sheet silicate filler can be propped open and fixed, so that a moisture diffusion channel is formed inside, and after cement is hydrated and in a water permeation process,volume expansion to a certain extent can occur, so that relative negative pressure is formed inside the pervious concrete, and the water permeability of the pervious concrete is improved. And rapid downward permeation and diffusion of water are facilitated.
本发明属于建筑材料技术领域，具体涉及一种轻质高强混凝土及其制备方法。本发明研制的产品中，包括片状硅酸盐填料；所述片状硅酸盐填料的单片层结构表面接枝有聚甲基丙烯酸二甲氨基乙酯；所述单片层结构之间填充有等电点低于7.0的明胶。其中，片状硅酸盐骨架中金属离子至少部分被氢离子取代。另外，明胶中还分散有弹性体乳液；所述弹性体乳液为室温硫化硅橡胶乳液。本发明所得产品可以在水泥水化过程中，使得片状硅酸盐填料的片状结构之间被撑开并固定，从而在内部形成水分扩散的通道，且在水泥完成水化后，在透水过程中，可以发生一定程度的体积膨胀，使得透水混凝土内部形成相对负压，有利于水分快速向下渗透扩散。
Lightweight high-strength concrete and preparation method thereof
一种轻质高强混凝土及其制备方法
CAI YANCHANG (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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