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A platform for research: civil engineering, architecture and urbanism
Coal gangue-based admixture and preparation method thereof
The invention discloses a coal gangue-based admixture and a preparation method thereof, and the preparation method comprises the following steps: taking 80-90 parts of coal gangue as a raw material, pre-grinding the coal gangue into powder, and then carrying out wet mixing, steam curing and calcination on the coal gangue powder, 5-15 parts of calcium oxide and 5-15 parts of gypsum, cooling the calcined product, grinding the cooled product and 3-6 parts of a silane coupling agent together, and finally mixing the ground product with 15-20 parts of fly ash and 5-10 parts of limestone powder to obtain the coal gangue-based admixture. According to the coal gangue-based admixture prepared by the invention, the proportion of the coal gangue is greater than or equal to 70%, the fluidity ratio of prepared mortar is greater than or equal to 97%, the activity is greater than or equal to 85%, and concrete doped with the admixture has the same workability as common concrete in terms of slump, expansion and the like. And the coal gangue-based admixture can meet the use of concrete with different construction requirements, is suitable for large-scale popularization and application, and has remarkable economic benefits and social benefits.
本发明公开了一种煤矸石基掺合料及其制备方法，所述制备方法包括以下步骤：以80‑90份煤矸石为原料，将其预磨成粉，然后将煤矸石粉与5‑15份氧化钙和5‑15份石膏进行湿混、蒸养、煅烧，随后将煅烧后的产物冷却后与3‑6份硅烷偶联剂进行共同粉磨，最后将共同粉磨后的产物与15‑20份粉煤灰和5‑10份石灰石粉进行混合得到所述煤矸石基掺合料。本发明制备得到的煤矸石基掺合料，煤矸石占比≥70％，制备的砂浆流动度比≥97％，活性≥85％，掺加此掺合料的混凝土其坍落度、扩展度等和易性与普通混凝土无异。能够满足不同施工要求的混凝土使用，适合大规模推广应用，具有显著的经济效益和社会效益。
Coal gangue-based admixture and preparation method thereof
The invention discloses a coal gangue-based admixture and a preparation method thereof, and the preparation method comprises the following steps: taking 80-90 parts of coal gangue as a raw material, pre-grinding the coal gangue into powder, and then carrying out wet mixing, steam curing and calcination on the coal gangue powder, 5-15 parts of calcium oxide and 5-15 parts of gypsum, cooling the calcined product, grinding the cooled product and 3-6 parts of a silane coupling agent together, and finally mixing the ground product with 15-20 parts of fly ash and 5-10 parts of limestone powder to obtain the coal gangue-based admixture. According to the coal gangue-based admixture prepared by the invention, the proportion of the coal gangue is greater than or equal to 70%, the fluidity ratio of prepared mortar is greater than or equal to 97%, the activity is greater than or equal to 85%, and concrete doped with the admixture has the same workability as common concrete in terms of slump, expansion and the like. And the coal gangue-based admixture can meet the use of concrete with different construction requirements, is suitable for large-scale popularization and application, and has remarkable economic benefits and social benefits.
本发明公开了一种煤矸石基掺合料及其制备方法，所述制备方法包括以下步骤：以80‑90份煤矸石为原料，将其预磨成粉，然后将煤矸石粉与5‑15份氧化钙和5‑15份石膏进行湿混、蒸养、煅烧，随后将煅烧后的产物冷却后与3‑6份硅烷偶联剂进行共同粉磨，最后将共同粉磨后的产物与15‑20份粉煤灰和5‑10份石灰石粉进行混合得到所述煤矸石基掺合料。本发明制备得到的煤矸石基掺合料，煤矸石占比≥70％，制备的砂浆流动度比≥97％，活性≥85％，掺加此掺合料的混凝土其坍落度、扩展度等和易性与普通混凝土无异。能够满足不同施工要求的混凝土使用，适合大规模推广应用，具有显著的经济效益和社会效益。
Coal gangue-based admixture and preparation method thereof
一种煤矸石基掺合料及其制备方法
ZHU XIAOLIANG (author) / GAO YUXIN (author) / GUO ZHAOHENG (author) / WANG JUN (author) / LAI HANG (author) / SONG WENJING (author) / CHENG BAOJUN (author)
2021-05-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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