Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-repairing cement-based composite material as well as preparation method and application thereof
The invention discloses a self-repairing cement-based composite material as well as a preparation method and application thereof. The self-repairing cement-based composite material comprises the following components in parts by mass: 85-100 parts of a cement-based material and 10-25 parts of a self-repairing material; the self-repairing material is composed of self-repairing particles and a nutrient substrate, and the self-repairing particles account for 75-90% of the mass of the self-repairing material; the cement-based material comprises cement and PVA fibers; the self-repairing particles comprise porous carriers, mineralized microorganisms are loaded on the porous carriers, and a nutrition layer and a protection layer are sequentially arranged on the surface of each porous carrier from inside to outside; the porous carrier is prepared from expanded perlite, ceramsite and zeolite, and the expanded perlite is perlite of 80-120 meshes. The material provided by the invention has relatively high compressive toughness and shows a 'cracking but not breaking' effect;generated fine cracks can realize a self-repairing effect under the action of microbial mineralization, and the durability of the material is improved; and the self-repairing effect of the material is better, and the strength of the material is higher.
本发明公开了一种自修复水泥基复合材料及其制备方法与应用，按照质量份数计，包括水泥基体材料85～100份，自修复材料10～25份；所述自修复材料由自修复颗粒与营养底物组成，所述自修复颗粒为自修复材料质量的75～90％；所述水泥基体材料包括水泥、PVA纤维；所述自修复颗粒包括多孔载体，所述多孔载体负载矿化微生物，多孔载体表面由内向外依次为营养层和保护层；所述多孔载体为膨胀珍珠岩、陶粒、沸石，其中，膨胀珍珠岩为80～120目。本发明提供的材料不仅具有较高的受压韧性，呈现出“裂而不碎”的效果，产生的细密裂缝在微生物矿化作用下可以实现自修复效果，提高材料耐久性；而且自修复效果更好，强度更高。
Self-repairing cement-based composite material as well as preparation method and application thereof
The invention discloses a self-repairing cement-based composite material as well as a preparation method and application thereof. The self-repairing cement-based composite material comprises the following components in parts by mass: 85-100 parts of a cement-based material and 10-25 parts of a self-repairing material; the self-repairing material is composed of self-repairing particles and a nutrient substrate, and the self-repairing particles account for 75-90% of the mass of the self-repairing material; the cement-based material comprises cement and PVA fibers; the self-repairing particles comprise porous carriers, mineralized microorganisms are loaded on the porous carriers, and a nutrition layer and a protection layer are sequentially arranged on the surface of each porous carrier from inside to outside; the porous carrier is prepared from expanded perlite, ceramsite and zeolite, and the expanded perlite is perlite of 80-120 meshes. The material provided by the invention has relatively high compressive toughness and shows a 'cracking but not breaking' effect;generated fine cracks can realize a self-repairing effect under the action of microbial mineralization, and the durability of the material is improved; and the self-repairing effect of the material is better, and the strength of the material is higher.
本发明公开了一种自修复水泥基复合材料及其制备方法与应用，按照质量份数计，包括水泥基体材料85～100份，自修复材料10～25份；所述自修复材料由自修复颗粒与营养底物组成，所述自修复颗粒为自修复材料质量的75～90％；所述水泥基体材料包括水泥、PVA纤维；所述自修复颗粒包括多孔载体，所述多孔载体负载矿化微生物，多孔载体表面由内向外依次为营养层和保护层；所述多孔载体为膨胀珍珠岩、陶粒、沸石，其中，膨胀珍珠岩为80～120目。本发明提供的材料不仅具有较高的受压韧性，呈现出“裂而不碎”的效果，产生的细密裂缝在微生物矿化作用下可以实现自修复效果，提高材料耐久性；而且自修复效果更好，强度更高。
Self-repairing cement-based composite material as well as preparation method and application thereof
一种自修复水泥基复合材料及其制备方法与应用
LIU RENTAI (Autor:in) / ZHANG CHUNYU (Autor:in) / YAN JIA (Autor:in) / CHEN MENGJUN (Autor:in) / LI XIUHAO (Autor:in) / LIU YANKAI (Autor:in) / MA CHENYANG (Autor:in) / TIAN JIAWEI (Autor:in) / FAN FENGSHUAI (Autor:in)
30.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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