A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Self-repairing steam-cured concrete material and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to a self-repairing steam-cured concrete material and a preparation method thereof. The invention aims to solve the problems of internal pore structure coarsening and microcrack development caused by high temperature and humidity, rapid strength development and rapid cooling in the steam curing process, and steam-cured concrete material cracking, mechanical property reduction and durability caused by the internal pore structure coarsening and microcrack development. The self-repairing steam-cured concrete material is prepared from cement, superfine slag powder, fly ash, silica fume, a self-repairing material, coarse and fine aggregate, a water reducing agent and the like, and the self-repairing material is SiO2-CaCO3-GO powder particles formed by mixing graphene oxide (GO), gas-phase nano SiO2 and CaCO3 powder; by adding the self-repairing material, modification and enhancement of a microstructure in the steam-curing process of the steam-curing concrete can be realized, the number of microcracks is reduced, the microcracks are repaired in the steam-curing process, and the purposes of refining the pore structure of the steam-curing concrete and improving the durability of the steam-curing concrete are achieved.
本发明属于建筑材料技术领域，具体涉及一种自修复蒸养混凝土材料及其制备方法。本发明为解决解决蒸养过程中由于温湿度高、强度发展快，以及快速降温而带来的内部孔结构粗化、微裂纹发展以及由此而带来的蒸养混凝土材料开裂、力学性能降低以及耐久性问题。自修复蒸养混凝土材料组成成分为水泥、矿渣微粉、粉煤灰、硅灰、自修复材料、粗细骨料、减水剂等，其中自修复材料为氧化石墨烯(graphene oxide,GO)、气相纳米SiO2和CaCO3粉的混合形成SiO2‑CaCO3‑GO粉体颗粒；自修复材料加入可实现蒸养混凝土蒸养过程中微观结构的改性增强，降低微裂纹数量，在蒸养过程中对微裂纹进行修复，达到细化蒸养混凝土孔结构，提高蒸养混凝土耐久性的目的。
Self-repairing steam-cured concrete material and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to a self-repairing steam-cured concrete material and a preparation method thereof. The invention aims to solve the problems of internal pore structure coarsening and microcrack development caused by high temperature and humidity, rapid strength development and rapid cooling in the steam curing process, and steam-cured concrete material cracking, mechanical property reduction and durability caused by the internal pore structure coarsening and microcrack development. The self-repairing steam-cured concrete material is prepared from cement, superfine slag powder, fly ash, silica fume, a self-repairing material, coarse and fine aggregate, a water reducing agent and the like, and the self-repairing material is SiO2-CaCO3-GO powder particles formed by mixing graphene oxide (GO), gas-phase nano SiO2 and CaCO3 powder; by adding the self-repairing material, modification and enhancement of a microstructure in the steam-curing process of the steam-curing concrete can be realized, the number of microcracks is reduced, the microcracks are repaired in the steam-curing process, and the purposes of refining the pore structure of the steam-curing concrete and improving the durability of the steam-curing concrete are achieved.
本发明属于建筑材料技术领域，具体涉及一种自修复蒸养混凝土材料及其制备方法。本发明为解决解决蒸养过程中由于温湿度高、强度发展快，以及快速降温而带来的内部孔结构粗化、微裂纹发展以及由此而带来的蒸养混凝土材料开裂、力学性能降低以及耐久性问题。自修复蒸养混凝土材料组成成分为水泥、矿渣微粉、粉煤灰、硅灰、自修复材料、粗细骨料、减水剂等，其中自修复材料为氧化石墨烯(graphene oxide,GO)、气相纳米SiO2和CaCO3粉的混合形成SiO2‑CaCO3‑GO粉体颗粒；自修复材料加入可实现蒸养混凝土蒸养过程中微观结构的改性增强，降低微裂纹数量，在蒸养过程中对微裂纹进行修复，达到细化蒸养混凝土孔结构，提高蒸养混凝土耐久性的目的。
Self-repairing steam-cured concrete material and preparation method thereof
一种自修复蒸养混凝土材料及其制备方法
ZHANG YI (author) / WANG HAILIANG (author) / LI XIANGFEI (author) / ZHAO YUTING (author) / HU DEXIN (author) / NIU CHENG (author) / LI YONGTAO (author)
2024-06-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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