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Preparation method of modified coal gangue ceramsite aggregate and high-strength lightweight concrete
The invention relates to a preparation method of a modified coal gangue ceramsite aggregate and high-strength lightweight concrete.The preparation method comprises the steps that 1, an alkaline solution, water glass and coal gangue ceramsite are taken, mixed, pressurized and soaked to obtain a mixture A, the pH of the alkaline solution is larger than or equal to 13, and the pressurizing process comprises a pressure increasing stage and a constant pressure stage; 2, composite mineral powder is added into the mixture A, a mixture B is obtained after standing is conducted for 48 h, and the composite mineral powder is formed by compounding S95 mineral powder and S105 mineral powder according to the mass part ratio; 3, after the mixture B is clarified, clear liquid is reserved and filtered, sediment is cleaned, solid particles are obtained, namely the modified coal gangue ceramsite aggregate, and the modified coal gangue ceramsite can be used for high-strength lightweight concrete. The gangue ceramsite is modified, the porosity of the ceramsite is reduced, the water absorption and storage capacity is weakened, the effects of increasing the cylinder compressive strength, the apparent density and the like are achieved, and meanwhile the problem that ceramsite aggregate floats upwards due to the small density in concrete is solved.
本发明涉及一种改性煤矸石陶粒骨料制备方法及高强轻质混凝土，该制备方法包括：步骤1、取碱性溶液、水玻璃和煤矸石陶粒混合后加压浸泡得到混合物A，碱性溶液的pH≥13，所述加压过程包括升压和恒压两个阶段；步骤2、向混合物A中加入复合矿粉，静置48h后得到混合物B，所述复合矿粉由S95矿粉和S105矿粉按质量份比复配而成；步骤3、混合物B澄清后保留澄清液并过滤、清洗沉淀物得到固体颗粒即为改性煤矸石陶粒骨料，将该改性后的煤矸石陶粒可以用于高强轻质混凝土。本发明通过改性煤矸石陶粒，降低陶粒孔隙率达到削弱吸水、储水能力，并起到增大筒压强度、表观密度等效果，同时解决了陶粒骨料在混凝土中因密度偏小上浮的问题。
Preparation method of modified coal gangue ceramsite aggregate and high-strength lightweight concrete
The invention relates to a preparation method of a modified coal gangue ceramsite aggregate and high-strength lightweight concrete.The preparation method comprises the steps that 1, an alkaline solution, water glass and coal gangue ceramsite are taken, mixed, pressurized and soaked to obtain a mixture A, the pH of the alkaline solution is larger than or equal to 13, and the pressurizing process comprises a pressure increasing stage and a constant pressure stage; 2, composite mineral powder is added into the mixture A, a mixture B is obtained after standing is conducted for 48 h, and the composite mineral powder is formed by compounding S95 mineral powder and S105 mineral powder according to the mass part ratio; 3, after the mixture B is clarified, clear liquid is reserved and filtered, sediment is cleaned, solid particles are obtained, namely the modified coal gangue ceramsite aggregate, and the modified coal gangue ceramsite can be used for high-strength lightweight concrete. The gangue ceramsite is modified, the porosity of the ceramsite is reduced, the water absorption and storage capacity is weakened, the effects of increasing the cylinder compressive strength, the apparent density and the like are achieved, and meanwhile the problem that ceramsite aggregate floats upwards due to the small density in concrete is solved.
本发明涉及一种改性煤矸石陶粒骨料制备方法及高强轻质混凝土，该制备方法包括：步骤1、取碱性溶液、水玻璃和煤矸石陶粒混合后加压浸泡得到混合物A，碱性溶液的pH≥13，所述加压过程包括升压和恒压两个阶段；步骤2、向混合物A中加入复合矿粉，静置48h后得到混合物B，所述复合矿粉由S95矿粉和S105矿粉按质量份比复配而成；步骤3、混合物B澄清后保留澄清液并过滤、清洗沉淀物得到固体颗粒即为改性煤矸石陶粒骨料，将该改性后的煤矸石陶粒可以用于高强轻质混凝土。本发明通过改性煤矸石陶粒，降低陶粒孔隙率达到削弱吸水、储水能力，并起到增大筒压强度、表观密度等效果，同时解决了陶粒骨料在混凝土中因密度偏小上浮的问题。
Preparation method of modified coal gangue ceramsite aggregate and high-strength lightweight concrete
一种改性煤矸石陶粒骨料制备方法及高强轻质混凝土
LYU JIWEI (author) / ZHU MINTAO (author) / BIAN CHENGHUI (author) / GAO SHUANGSHUANG (author) / WU YIFEI (author) / QU WEI (author) / GU WEIHONG (author)
2024-03-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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