干粉激发煤矸石基地质聚合物性能影响因素研究

发布时间：2018-04-13 13:29

本文选题：地质聚合物 + 碱性干粉激发剂　；参考：《金属矿山》2016年11期

【摘要】：为更方便、高效、安全地激发煤矸石的活性,制造出满足建筑需要的地质聚合物,用氢氧化钠与碳酸钙混合制备的碱性干粉激发剂替代氢氧化钠,对煤矸石、粉煤灰和标准砂进行处理,研究影响干粉激发煤矸石地质聚合物性能的因素,并与传统碱性溶液激发聚合物的特性进行了对比。结果表明:(1)升高养护温度、提高干粉激发剂中氢氧化钠的用量会加快地质聚合物的凝结和硬化速度。(2)养护温度升高可使试件的吸水率和抗压强度上升。(3)干粉激发剂中碳酸钙用量的增加会使地质聚合物试件的吸水率上升、抗压强度下降。(4)干粉激发剂中氢氧化钠用量为3%时,地质聚合物试件的吸水率最低、抗压强度最高。(5)无论从吸水率的角度还是从抗压强度的角度看,干粉激发剂的激发效果均好于氢氧化钠溶液。因此,干粉激发剂比氢氧化钠溶液更适合于激发煤矸石制备煤矸石基地质聚合物。
[Abstract]:In order to stimulate the activity of coal gangue more conveniently, efficiently and safely and to produce geopolymer to meet the needs of building, the alkaline dry powder activator prepared by sodium hydroxide and calcium carbonate was used instead of sodium hydroxide.The effects of fly ash and standard sand on the properties of geopolymers of coal gangue excited by dry powder were studied and compared with those of conventional alkaline solution.The results show that the curing temperature is increased by 1: 1.Increasing the amount of sodium hydroxide in dry powder activator will accelerate the setting and hardening rate of geopolymers.The water absorption rate of geopolymer specimens increased,When the amount of sodium hydroxide in dry powder activator is 3, the water absorption of geopolymers is the lowest and the compressive strength is the highest. 5) whether from the angle of water absorption or compressive strength,The excitation effect of dry powder activator is better than that of sodium hydroxide solution.Therefore, dry powder activator is more suitable than sodium hydroxide solution to stimulate coal gangue to prepare coal gangue base polymer.
【作者单位】：东北大学资源与土木工程学院;辽宁工程技术大学应用技术与经济管理学院;
【基金】：“十二五”国家科技支撑计划项目(编号:2013BAB02B08) 国家自然科学基金重点项目(编号:50934006)
【分类号】：TD849.5;TQ317

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