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Preparation method of spontaneous combustion coal gangue hybrid fiber concrete material
The invention discloses a preparation method of a spontaneous combustion coal gangue hybrid fiber concrete material and belongs to the technical field of preparation of concrete materials from solid wastes. The solid waste is prepared by crushing spontaneous combustion coal gangue to two particle sizes of 5-10mm and 10-20mm to serve as a coarse aggregate, the river sand serves as a fine aggregate, and the isopyknic doping amounts of the polypropylene coarse fiber and the basalt fiber are 0.5%, 0.9%, 1.3%, 0.1%, 0.2% and 0.3% respectively. The water-binder ratio is 0.42, and the water reducing agent accounts for 0.8% of the weight of the cementing material. The spontaneous combustion coal gangue is wetted with additional water and then stirred with the fine aggregate, the binding material is added, stirring continues to be conducted, and a mixture is obtained; stirring and dissolving the water reducing agent and water, putting the hybrid fibers into the water, stirring and dispersing, pouring into the mixture, and stirring. The solid waste is utilized, a large amount of resources are saved, the technical performance of the natural coal gangue concrete is improved through the mixed fibers, the problems of poor working performance and the like of spontaneous combustion coal gangue concrete are solved, and certain practical significance is achieved.
一种自燃煤矸石混杂纤维的混凝土材料制备及其方法，属于固体废弃物制备混凝土材料技术领域。固体废弃物为自燃煤矸石经破碎至5‑10mm和10‑20mm两种粒径以下做为粗骨料、河砂做为细骨料，聚丙烯粗纤维与玄武岩纤维分别按等体积掺入量为0.5％、0.9％、1.3％，0.1％、0.2％、0.3％。水胶比为0.42，减水剂占胶凝材料重量的0.8％。将自燃煤矸石采用附加用水润湿后与细骨料进行搅拌，加入胶凝材料继续搅拌得到混合料；将减水剂与水搅拌溶解，再将混杂纤维放入水中搅拌散开，倒入混合料中搅拌。本发明利用固体废弃物，节约大量资源，利用混合纤维改善自然煤矸石混凝土技术性能，解决自燃煤矸石混凝土工作性能差等问题，也具有一定的实际意义。
Preparation method of spontaneous combustion coal gangue hybrid fiber concrete material
The invention discloses a preparation method of a spontaneous combustion coal gangue hybrid fiber concrete material and belongs to the technical field of preparation of concrete materials from solid wastes. The solid waste is prepared by crushing spontaneous combustion coal gangue to two particle sizes of 5-10mm and 10-20mm to serve as a coarse aggregate, the river sand serves as a fine aggregate, and the isopyknic doping amounts of the polypropylene coarse fiber and the basalt fiber are 0.5%, 0.9%, 1.3%, 0.1%, 0.2% and 0.3% respectively. The water-binder ratio is 0.42, and the water reducing agent accounts for 0.8% of the weight of the cementing material. The spontaneous combustion coal gangue is wetted with additional water and then stirred with the fine aggregate, the binding material is added, stirring continues to be conducted, and a mixture is obtained; stirring and dissolving the water reducing agent and water, putting the hybrid fibers into the water, stirring and dispersing, pouring into the mixture, and stirring. The solid waste is utilized, a large amount of resources are saved, the technical performance of the natural coal gangue concrete is improved through the mixed fibers, the problems of poor working performance and the like of spontaneous combustion coal gangue concrete are solved, and certain practical significance is achieved.
一种自燃煤矸石混杂纤维的混凝土材料制备及其方法，属于固体废弃物制备混凝土材料技术领域。固体废弃物为自燃煤矸石经破碎至5‑10mm和10‑20mm两种粒径以下做为粗骨料、河砂做为细骨料，聚丙烯粗纤维与玄武岩纤维分别按等体积掺入量为0.5％、0.9％、1.3％，0.1％、0.2％、0.3％。水胶比为0.42，减水剂占胶凝材料重量的0.8％。将自燃煤矸石采用附加用水润湿后与细骨料进行搅拌，加入胶凝材料继续搅拌得到混合料；将减水剂与水搅拌溶解，再将混杂纤维放入水中搅拌散开，倒入混合料中搅拌。本发明利用固体废弃物，节约大量资源，利用混合纤维改善自然煤矸石混凝土技术性能，解决自燃煤矸石混凝土工作性能差等问题，也具有一定的实际意义。
Preparation method of spontaneous combustion coal gangue hybrid fiber concrete material
一种自燃煤矸石混杂纤维的混凝土材料制备及其方法
BAI JUKE (author) / NING YAXIN (author) / QI CHUNXIAO (author) / LYU ZIZI (author) / LIU HONGTU (author)
2023-03-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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