Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ecological high-ductility low-shrinkage cement-based composite material prepared from coal gangue as aggregate and method
The invention relates to resource utilization of solid wastes in building materials, in particular to an ecological high-ductility low-shrinkage cement-based composite material prepared from coal gangue as aggregate and a method. Comprising the following raw materials in parts by mass: 752 to 860 parts of Portland cement, 452 to 560 parts of fly ash, 252 to 420 parts of coal gangue fine aggregate, 0 to 168 parts of river sand, 2.5 to 5.0 parts of water reducing agent, 28 to 84 parts of shrinkage reducing agent, 266 to 378 parts of water and 21.8 to 26 parts of fiber. The ecological high-ductility low-shrinkage cement-based composite material developed by the invention integrates high ductility, low shrinkage and capability of meeting the strength grade of road and bridge deck concrete, and can be used for pouring a road and bridge deck pavement layer, reducing the cracking risk of the pavement layer, improving the service durability of a road and bridge deck concrete structure and reducing the maintenance cost; and the coal gangue aggregate is adopted to replace river sand, so that resource utilization of solid wastes is realized, and exploitation of natural resource river sand is reduced.
本发明涉及固废物在建筑材料中的资源化利用，具体涉及一种采用煤矸石作为集料制备的生态高延性低收缩水泥基复合材料及方法；包括以下质量份配比的原料：硅酸盐水泥752~860份，粉煤灰452~560份，煤矸石细骨料252~420份，河砂0~168份，减水剂2.5~5.0份，降缩剂28~84份，水266~378份，纤维21.8~26份。本发明开发的生态高延性低收缩水泥基复合材料，集高延性、低收缩、满足路桥面混凝土强度等级于一体，不仅可用于浇筑路桥面铺装层，减少铺装层开裂风险，提高路桥面混凝土结构的服役耐久性，减少维护成本；而且采用煤矸石集料替换河砂，实现了固废物资源化利用，减少了天然资源河砂开采。
Ecological high-ductility low-shrinkage cement-based composite material prepared from coal gangue as aggregate and method
The invention relates to resource utilization of solid wastes in building materials, in particular to an ecological high-ductility low-shrinkage cement-based composite material prepared from coal gangue as aggregate and a method. Comprising the following raw materials in parts by mass: 752 to 860 parts of Portland cement, 452 to 560 parts of fly ash, 252 to 420 parts of coal gangue fine aggregate, 0 to 168 parts of river sand, 2.5 to 5.0 parts of water reducing agent, 28 to 84 parts of shrinkage reducing agent, 266 to 378 parts of water and 21.8 to 26 parts of fiber. The ecological high-ductility low-shrinkage cement-based composite material developed by the invention integrates high ductility, low shrinkage and capability of meeting the strength grade of road and bridge deck concrete, and can be used for pouring a road and bridge deck pavement layer, reducing the cracking risk of the pavement layer, improving the service durability of a road and bridge deck concrete structure and reducing the maintenance cost; and the coal gangue aggregate is adopted to replace river sand, so that resource utilization of solid wastes is realized, and exploitation of natural resource river sand is reduced.
本发明涉及固废物在建筑材料中的资源化利用，具体涉及一种采用煤矸石作为集料制备的生态高延性低收缩水泥基复合材料及方法；包括以下质量份配比的原料：硅酸盐水泥752~860份，粉煤灰452~560份，煤矸石细骨料252~420份，河砂0~168份，减水剂2.5~5.0份，降缩剂28~84份，水266~378份，纤维21.8~26份。本发明开发的生态高延性低收缩水泥基复合材料，集高延性、低收缩、满足路桥面混凝土强度等级于一体，不仅可用于浇筑路桥面铺装层，减少铺装层开裂风险，提高路桥面混凝土结构的服役耐久性，减少维护成本；而且采用煤矸石集料替换河砂，实现了固废物资源化利用，减少了天然资源河砂开采。
Ecological high-ductility low-shrinkage cement-based composite material prepared from coal gangue as aggregate and method
一种采用煤矸石作为集料制备的生态高延性低收缩水泥基复合材料及方法
CHAI LIJUAN (Autor:in) / YUE ZHONGHUA (Autor:in) / LI NING (Autor:in) / FAN GAOYU (Autor:in)
29.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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