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A platform for research: civil engineering, architecture and urbanism
Mix proportion design method of C30-C40 spontaneous combustion coal gangue aggregate concrete
The invention discloses a mix proportion design method of C30-C40 spontaneous combustion coal gangue aggregate concrete, and belongs to the technical field of concrete preparation and the field of resource utilization of solid waste building materials. The concrete is prepared by replacing natural aggregate with spontaneous combustion coal gangue coarse aggregate, fine aggregate or coarse and fine aggregate. The method comprises the following steps: (1) detecting performance indexes of various raw materials; (2) determining three parameters of mix proportion design: water-binder ratio, unit water consumption and initial sand ratio; (3) calculating the unit dosage of the cementing material and the dosage of the cement and the admixture, and determining the dosage of the admixture; (4) adjusting the sand ratio according to the consistency of the mixture; and (5) calculating the unit dosage of natural sand, stone, coal gangue sand, coal gangue and pre-wetting water. In the invention, features such as high water absorption, poor grain shape and the like of the spontaneous combustion coal gangue aggregate are considered, so that the pertinence is high and the operability is good; large-scale utilization of the spontaneous combustion coal gangue in the field of building materials is realized, so that the problem of shortage of gravel resources for basic building material concrete is relieved, and the method has remarkable social and economic benefits.
本发明公开C30～C40自燃煤矸石骨料混凝土的配合比设计方法，属于混凝土配制技术领域及固废建材资源化利用领域。本发明利用自燃煤矸石粗骨料、细骨料或粗细骨料取代天然骨料制备混凝土，包括以下步骤：(1)检测各类原材料性能指标；(2)确定配合比设计三个参数：水胶比、单位用水量和初始砂率；(3)计算胶凝材料单位用量以及水泥和掺合料的用量，确定外加剂掺量；(4)根据拌合物稠度调整砂率；(5)计算天然砂、石，以及煤矸砂、煤矸石和预湿用水的单位用量。本发明考虑了自燃煤矸石骨料吸水率大、粒形差等特点，针对性强、可操作性好，实现了自燃煤矸石在建材领域规模化利用，缓解了作为基础建材混凝土用砂石资源短缺的问题，具有显著的社会和经济效益。
Mix proportion design method of C30-C40 spontaneous combustion coal gangue aggregate concrete
The invention discloses a mix proportion design method of C30-C40 spontaneous combustion coal gangue aggregate concrete, and belongs to the technical field of concrete preparation and the field of resource utilization of solid waste building materials. The concrete is prepared by replacing natural aggregate with spontaneous combustion coal gangue coarse aggregate, fine aggregate or coarse and fine aggregate. The method comprises the following steps: (1) detecting performance indexes of various raw materials; (2) determining three parameters of mix proportion design: water-binder ratio, unit water consumption and initial sand ratio; (3) calculating the unit dosage of the cementing material and the dosage of the cement and the admixture, and determining the dosage of the admixture; (4) adjusting the sand ratio according to the consistency of the mixture; and (5) calculating the unit dosage of natural sand, stone, coal gangue sand, coal gangue and pre-wetting water. In the invention, features such as high water absorption, poor grain shape and the like of the spontaneous combustion coal gangue aggregate are considered, so that the pertinence is high and the operability is good; large-scale utilization of the spontaneous combustion coal gangue in the field of building materials is realized, so that the problem of shortage of gravel resources for basic building material concrete is relieved, and the method has remarkable social and economic benefits.
本发明公开C30～C40自燃煤矸石骨料混凝土的配合比设计方法，属于混凝土配制技术领域及固废建材资源化利用领域。本发明利用自燃煤矸石粗骨料、细骨料或粗细骨料取代天然骨料制备混凝土，包括以下步骤：(1)检测各类原材料性能指标；(2)确定配合比设计三个参数：水胶比、单位用水量和初始砂率；(3)计算胶凝材料单位用量以及水泥和掺合料的用量，确定外加剂掺量；(4)根据拌合物稠度调整砂率；(5)计算天然砂、石，以及煤矸砂、煤矸石和预湿用水的单位用量。本发明考虑了自燃煤矸石骨料吸水率大、粒形差等特点，针对性强、可操作性好，实现了自燃煤矸石在建材领域规模化利用，缓解了作为基础建材混凝土用砂石资源短缺的问题，具有显著的社会和经济效益。
Mix proportion design method of C30-C40 spontaneous combustion coal gangue aggregate concrete
C30～C40自燃煤矸石骨料混凝土的配合比设计方法
ZHOU MEI (author) / CHEN RUIXUE (author) / WANG XINYI (author)
2021-07-30
Patent
Electronic Resource
Chinese
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