A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Graphene oxide reinforced recycled aggregate ultra-high performance concrete and preparation method thereof
The invention belongs to the technical field of building materials, and discloses graphene oxide reinforced recycled aggregate ultra-high performance concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by mass: 570 to 650 parts of cement, 150 to 180 parts of slag, 100 to 150 parts of metakaolin, 80 to 120 parts of limestone powder, 300 to 440 parts of regenerated sand, 50 to 80 parts of regenerated micro powder, 700 to 1000 parts of quartz sand, 100 to 200 parts of quartz stone powder, 30 to 60 parts of polycarboxylate superplasticizer, 180 to 280 parts of water and 0.5 to 0.8 part of graphene oxide. The concrete further comprises steel fibers, and the volume of the steel fibers accounts for 1.5-2.2% of the total volume of the concrete. According to the invention, reclaimed sand is adopted to replace natural river sand, a limestone calcined clay system is added with slag and regenerated micro-powder as an auxiliary cementing material, the graphene oxide is used to reinforce the recycled aggregate, and an intermittent spraying and stirring mode is matched, so that the graphene oxide is uniformly distributed on the surface of the aggregate, and an obvious reinforcing effect is realized at a relatively low mixing amount; the ultra-high performance concrete with excellent performance is obtained.
本发明属于建筑材料技术领域，公开了一种氧化石墨烯增强再生骨料超高性能混凝土及制备方法。所述混凝土包括以下质量份数的原料：水泥570～650份、矿渣150～180份、偏高岭土100～150份、石灰石粉80～120份、再生砂300～440份、再生微粉50～80份、石英砂700～1000份、石英石粉100～200份、聚羧酸减水剂30～60份、水180～280份、氧化石墨烯0.5～0.8份；还包括钢纤维，钢纤维的体积为混凝土总体积的1.5～2.2％。本发明采用再生砂替代天然河砂，石灰石煅烧黏土体系添加矿渣和再生微粉作为辅助胶凝材料，并使用氧化石墨烯增强再生骨料，配合间歇喷淋加搅拌的方式，使氧化石墨烯均匀分布在骨料表面，以较低掺量实现明显的增强效果，得到性能优异的超高性能混凝土。
Graphene oxide reinforced recycled aggregate ultra-high performance concrete and preparation method thereof
The invention belongs to the technical field of building materials, and discloses graphene oxide reinforced recycled aggregate ultra-high performance concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by mass: 570 to 650 parts of cement, 150 to 180 parts of slag, 100 to 150 parts of metakaolin, 80 to 120 parts of limestone powder, 300 to 440 parts of regenerated sand, 50 to 80 parts of regenerated micro powder, 700 to 1000 parts of quartz sand, 100 to 200 parts of quartz stone powder, 30 to 60 parts of polycarboxylate superplasticizer, 180 to 280 parts of water and 0.5 to 0.8 part of graphene oxide. The concrete further comprises steel fibers, and the volume of the steel fibers accounts for 1.5-2.2% of the total volume of the concrete. According to the invention, reclaimed sand is adopted to replace natural river sand, a limestone calcined clay system is added with slag and regenerated micro-powder as an auxiliary cementing material, the graphene oxide is used to reinforce the recycled aggregate, and an intermittent spraying and stirring mode is matched, so that the graphene oxide is uniformly distributed on the surface of the aggregate, and an obvious reinforcing effect is realized at a relatively low mixing amount; the ultra-high performance concrete with excellent performance is obtained.
本发明属于建筑材料技术领域，公开了一种氧化石墨烯增强再生骨料超高性能混凝土及制备方法。所述混凝土包括以下质量份数的原料：水泥570～650份、矿渣150～180份、偏高岭土100～150份、石灰石粉80～120份、再生砂300～440份、再生微粉50～80份、石英砂700～1000份、石英石粉100～200份、聚羧酸减水剂30～60份、水180～280份、氧化石墨烯0.5～0.8份；还包括钢纤维，钢纤维的体积为混凝土总体积的1.5～2.2％。本发明采用再生砂替代天然河砂，石灰石煅烧黏土体系添加矿渣和再生微粉作为辅助胶凝材料，并使用氧化石墨烯增强再生骨料，配合间歇喷淋加搅拌的方式，使氧化石墨烯均匀分布在骨料表面，以较低掺量实现明显的增强效果，得到性能优异的超高性能混凝土。
Graphene oxide reinforced recycled aggregate ultra-high performance concrete and preparation method thereof
一种氧化石墨烯增强再生骨料超高性能混凝土及制备方法
CHENG SHUKAI (author) / CHEN KANG (author) / CHEN XUYONG (author) / WU QIAOYUN (author) / WU ZIYANG (author) / YOU XIAO (author) / YE ZIQIAN (author) / SEO WOONG (author)
2023-06-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Reinforced recycled concrete aggregate and preparation method thereof
| European Patent Office | 2023
Full-recycled fine aggregate ultra-high performance concrete and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2022
Low-shrinkage recycled fine aggregate ultra-high performance concrete and preparation method thereof
| European Patent Office | 2023
Preparation method of reinforced recycled aggregate concrete
| European Patent Office | 2023