A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Waste slurry slag admixture containing CO2 micro-nano bubbles as well as preparation method and application of waste slurry slag admixture
The invention relates to the technical field of concrete production, and discloses a waste slurry slag admixture containing CO2 micro-nano bubbles and a preparation method and application thereof.The preparation method comprises the following steps that CO2 gas is introduced into water to obtain carbonated water with the CO2 concentration not lower than 5%; the solid waste of the mixing plant is crushed to be below 3 mm, and a crushed material is obtained; mixing and grinding the crushed material and carbonated water into a fine material, and controlling the pH value of the fine material to be not less than 7.5; the ground fine material is subjected to sedimentation treatment, a lower-layer substance is taken as a final product, and the waste slurry slag admixture containing the CO2 micro-nano bubbles prepared through the method can serve as an auxiliary cementing material to be applied to concrete production; the alkalinity of the waste slurry slag subjected to carbon absorption is reduced, and meanwhile, a new product nano calcium carbonate is formed, so that the activity is further improved; in addition, micro-nano bubbles are introduced into the ground fine materials, the effects of ball lubrication and cohesive force reduction are achieved, and then the problems that the consistency of waste slurry residues is large, and work loss is fast are solved.
本发明涉及混凝土生产技术领域，公开了一种含CO2微纳米气泡的废浆渣掺合料及其制备方法和应用，制备方法包括如下步骤：向水中通入CO2气体制取得到CO2浓度不低于5％的碳酸水；将搅拌站固废破碎至3mm以下，得到破碎料；将破碎料与碳酸水混合研磨至细料，并控制细料pH值不低于7.5；对研磨后细料进行沉降处理，取下层物质作为最终产物，上述方法制备的含CO2微纳米气泡的废浆渣掺合料能够作为辅助性胶凝材料应用于混凝土生产；经碳吸收后的废浆渣碱度降低同时，由于形成了新产物纳米碳酸钙，使活性得到进一步提升；此外，通过向研磨细料中引入微纳米气泡，发挥滚珠润滑、降低粘聚力作用，进而优化了废浆渣稠度大、工作损失快等问题。
Waste slurry slag admixture containing CO2 micro-nano bubbles as well as preparation method and application of waste slurry slag admixture
The invention relates to the technical field of concrete production, and discloses a waste slurry slag admixture containing CO2 micro-nano bubbles and a preparation method and application thereof.The preparation method comprises the following steps that CO2 gas is introduced into water to obtain carbonated water with the CO2 concentration not lower than 5%; the solid waste of the mixing plant is crushed to be below 3 mm, and a crushed material is obtained; mixing and grinding the crushed material and carbonated water into a fine material, and controlling the pH value of the fine material to be not less than 7.5; the ground fine material is subjected to sedimentation treatment, a lower-layer substance is taken as a final product, and the waste slurry slag admixture containing the CO2 micro-nano bubbles prepared through the method can serve as an auxiliary cementing material to be applied to concrete production; the alkalinity of the waste slurry slag subjected to carbon absorption is reduced, and meanwhile, a new product nano calcium carbonate is formed, so that the activity is further improved; in addition, micro-nano bubbles are introduced into the ground fine materials, the effects of ball lubrication and cohesive force reduction are achieved, and then the problems that the consistency of waste slurry residues is large, and work loss is fast are solved.
本发明涉及混凝土生产技术领域，公开了一种含CO2微纳米气泡的废浆渣掺合料及其制备方法和应用，制备方法包括如下步骤：向水中通入CO2气体制取得到CO2浓度不低于5％的碳酸水；将搅拌站固废破碎至3mm以下，得到破碎料；将破碎料与碳酸水混合研磨至细料，并控制细料pH值不低于7.5；对研磨后细料进行沉降处理，取下层物质作为最终产物，上述方法制备的含CO2微纳米气泡的废浆渣掺合料能够作为辅助性胶凝材料应用于混凝土生产；经碳吸收后的废浆渣碱度降低同时，由于形成了新产物纳米碳酸钙，使活性得到进一步提升；此外，通过向研磨细料中引入微纳米气泡，发挥滚珠润滑、降低粘聚力作用，进而优化了废浆渣稠度大、工作损失快等问题。
Waste slurry slag admixture containing CO2 micro-nano bubbles as well as preparation method and application of waste slurry slag admixture
一种含CO2微纳米气泡的废浆渣掺合料及其制备方法和应用
WANG JUN (author) / YANG WEN (author) / GAO YUXIN (author) / LIU JIAWEN (author) / CHEN XIAORUN (author) / WU XIONG (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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