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A platform for research: civil engineering, architecture and urbanism
Sprayed concrete and preparation method thereof
The invention discloses sprayed concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is mainly prepared from the following raw materials in parts by weight: 200-260 parts of Portland cement, 240-280 parts of fine sand, 260-300 parts of gravel, 10-35 parts of fly ash, 5-10 parts of composite steel fibers, 10-15 parts of an admixture, 2-5 parts of an alkali-free accelerator, 1-3 parts of a water reducing agent and 80-110 parts of water. According to the sprayed concrete provided by the invention, the steel fibers have the characteristics of excellent tensile strength, elasticity modulus and the like, and a three-dimensional net-shaped structure is formed in the concrete by utilizing the composite steel fibers to support the concrete; after the fly ash and the admixture are doped into the concrete, the compactness of the concrete is improved, the development of early strength is promoted, and the compressive property of the concrete is improved.
本发明公开了一种喷射混凝土及其制备方法，属于建筑材料技术领域。其主要包括以下重量份的原料制成：硅酸盐水泥200～260份、细砂240～280份、碎石260～300份、粉煤灰10～35份、复合钢纤维5～10份、掺合料10～15份、无碱速凝剂2～5份、减水剂1～3份和水80～110份。本发明提供的喷射混凝土采用钢纤维具有极佳拉伸强度和弹性模量等特点，利用复合钢纤维在混凝土里面形成了立体网状结构支撑着混凝土；向混凝土中掺加粉煤灰和掺合料后，有利于提高混凝土的密实度，促进早期强度发展，改善混凝土抗压性能。
Sprayed concrete and preparation method thereof
The invention discloses sprayed concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is mainly prepared from the following raw materials in parts by weight: 200-260 parts of Portland cement, 240-280 parts of fine sand, 260-300 parts of gravel, 10-35 parts of fly ash, 5-10 parts of composite steel fibers, 10-15 parts of an admixture, 2-5 parts of an alkali-free accelerator, 1-3 parts of a water reducing agent and 80-110 parts of water. According to the sprayed concrete provided by the invention, the steel fibers have the characteristics of excellent tensile strength, elasticity modulus and the like, and a three-dimensional net-shaped structure is formed in the concrete by utilizing the composite steel fibers to support the concrete; after the fly ash and the admixture are doped into the concrete, the compactness of the concrete is improved, the development of early strength is promoted, and the compressive property of the concrete is improved.
本发明公开了一种喷射混凝土及其制备方法，属于建筑材料技术领域。其主要包括以下重量份的原料制成：硅酸盐水泥200～260份、细砂240～280份、碎石260～300份、粉煤灰10～35份、复合钢纤维5～10份、掺合料10～15份、无碱速凝剂2～5份、减水剂1～3份和水80～110份。本发明提供的喷射混凝土采用钢纤维具有极佳拉伸强度和弹性模量等特点，利用复合钢纤维在混凝土里面形成了立体网状结构支撑着混凝土；向混凝土中掺加粉煤灰和掺合料后，有利于提高混凝土的密实度，促进早期强度发展，改善混凝土抗压性能。
Sprayed concrete and preparation method thereof
一种喷射混凝土及其制备方法
CHE WEIBIN (author) / WANG XIAOLEI (author) / JIANG WANHONG (author) / LIU LING (author)
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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