A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-strength concrete material based on coal gasification slag and preparation method thereof
The invention belongs to the technical field of construction and building materials, and particularly relates to a high-strength concrete material based on coal gasification slag and a preparation method of the high-strength concrete material. The high-strength concrete material based on the coal gasification slag is prepared from the following raw materials in parts by mass: 30 to 50 parts of gravel, 0 to 40 parts of sand, 20 to 35 parts of cement, 0 to 40 parts of the coal gasification slag, 4 to 8 parts of silica fume, 2 to 6 parts of an additive A, 3 to 9 parts of an exciting agent B, 0.1 to 0.5 part of a polydimethylsiloxane defoaming agent, 1 to 5 parts of nano Al2O3, 1 to 4 parts of polyvinyl alcohol spiral fiber and 5 to 15 parts of water. Wherein the admixture A is an early-strength polycarboxylic acid water reducing agent compounded by calcium acetate, sodium nitrite and a polycarboxylic acid solution, and the ratio of the calcium acetate to the sodium nitrite to the polycarboxylic acid solution is (1-1.5): (1-1.5): (10-30); and the exciting agent B is prepared from calcium oxide, calcium sulfate, gypsum and magnesium hydroxide according to the ratio of (1-1.5): 1: 0.7: 0.1 in sequence. The invention also discloses a preparation method of the material, the problem of accumulation of a large amount of coal gasification slag is solved, the preparation process is simple, and the 28d strength of concrete prepared from the material is up to 95MPa.
本发明属于建筑建材技术领域，具体涉及一种基于煤气化渣的高强度混凝土材料及其制备方法。通过基于煤气化渣的高强度混凝土材料，材料由包含以下质量份数的原料组成：碎石30~50份、沙子0~40份、水泥20~35份、煤气化渣0~40、硅灰4~8份、外加剂A 2~6份、激发剂B 3~9份、聚二甲基硅氧烷消泡剂0.1~0.5、纳米Al2O3 1~5份、聚乙烯醇螺旋纤维1~4、水5~15份；其中，所述外加剂A为乙酸钙、亚硝酸钠、聚羧酸溶液复合的早强型聚羧酸减水剂，其配比依次为1~1.5：1~1.5：10~30；所述激发剂B由氧化钙、硫酸钙、石膏、氢氧化镁依次按照1~1.5：1：0.7：0.1的比例配置。以及所述材料的制备方法，解决了大量煤气化渣堆积问题而且制备工艺简单，并且采用上述材料制备的混凝土28d强度高达95MPa。
High-strength concrete material based on coal gasification slag and preparation method thereof
The invention belongs to the technical field of construction and building materials, and particularly relates to a high-strength concrete material based on coal gasification slag and a preparation method of the high-strength concrete material. The high-strength concrete material based on the coal gasification slag is prepared from the following raw materials in parts by mass: 30 to 50 parts of gravel, 0 to 40 parts of sand, 20 to 35 parts of cement, 0 to 40 parts of the coal gasification slag, 4 to 8 parts of silica fume, 2 to 6 parts of an additive A, 3 to 9 parts of an exciting agent B, 0.1 to 0.5 part of a polydimethylsiloxane defoaming agent, 1 to 5 parts of nano Al2O3, 1 to 4 parts of polyvinyl alcohol spiral fiber and 5 to 15 parts of water. Wherein the admixture A is an early-strength polycarboxylic acid water reducing agent compounded by calcium acetate, sodium nitrite and a polycarboxylic acid solution, and the ratio of the calcium acetate to the sodium nitrite to the polycarboxylic acid solution is (1-1.5): (1-1.5): (10-30); and the exciting agent B is prepared from calcium oxide, calcium sulfate, gypsum and magnesium hydroxide according to the ratio of (1-1.5): 1: 0.7: 0.1 in sequence. The invention also discloses a preparation method of the material, the problem of accumulation of a large amount of coal gasification slag is solved, the preparation process is simple, and the 28d strength of concrete prepared from the material is up to 95MPa.
本发明属于建筑建材技术领域，具体涉及一种基于煤气化渣的高强度混凝土材料及其制备方法。通过基于煤气化渣的高强度混凝土材料，材料由包含以下质量份数的原料组成：碎石30~50份、沙子0~40份、水泥20~35份、煤气化渣0~40、硅灰4~8份、外加剂A 2~6份、激发剂B 3~9份、聚二甲基硅氧烷消泡剂0.1~0.5、纳米Al2O3 1~5份、聚乙烯醇螺旋纤维1~4、水5~15份；其中，所述外加剂A为乙酸钙、亚硝酸钠、聚羧酸溶液复合的早强型聚羧酸减水剂，其配比依次为1~1.5：1~1.5：10~30；所述激发剂B由氧化钙、硫酸钙、石膏、氢氧化镁依次按照1~1.5：1：0.7：0.1的比例配置。以及所述材料的制备方法，解决了大量煤气化渣堆积问题而且制备工艺简单，并且采用上述材料制备的混凝土28d强度高达95MPa。
High-strength concrete material based on coal gasification slag and preparation method thereof
一种基于煤气化渣的高强度混凝土材料及其制备方法
FENG JING (author) / YAN GUANGMAO (author) / JIANG QINGWEI (author) / QU CHENKAI (author)
2023-05-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-strength coal gasification slag building decoration material and preparation method thereof
| European Patent Office | 2021
High-dosage coal gasification slag concrete for road and preparation method thereof
| European Patent Office | 2022
Preparation method of coal gasification slag-lithium slag-steel slag based lightweight concrete
| European Patent Office | 2024
Coal gasification slag-based self-foaming lightweight concrete and preparation method thereof
| European Patent Office | 2024
Coal chemical gasification slag and coal gangue backfill material and preparation method thereof
| European Patent Office | 2023