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High-speed rail ballastless track self-compacting concrete based on cementing material and preparation method
The invention discloses high-speed rail ballastless track self-compacting concrete based on a cementing material and a preparation method, and belongs to the technical field of self-compacting concrete. The self-compacting concrete for the ballastless track of the high-speed rail is prepared from cement, a cementing material, fine aggregate, coarse aggregate, fly ash, an additive and a proper amount of water. According to the formula of the self-compacting concrete, the cementing material prepared by taking the floating beads and the quartz sand as raw materials through high-temperature melting, water quenching and grinding is added, and the cementing material has relatively large specific surface area and activity, so the viscosity between the cementing material and other mixtures is increased, the interface structure is improved, and the compactness is increased; in other words, the friction force between the cementing material and the mixture is increased equivalently, so the lightweight aggregate can be effectively prevented from floating upwards, and the problems of segregation and bleeding when the lightweight aggregate is used in the self-compacting concrete in the prior artare solved.
本发明公开了一种基于胶凝材料的高铁无砟轨道自密实混凝土及制备方法，属于自密实混凝土技术领域。该高铁无砟轨道自密实混凝土由水泥、胶凝材料、细骨料、粗骨料、粉煤灰、外加剂和适量的水制成。本发明所述自密实混凝土配方中，加入了以漂珠与石英砂为原料，经过高温熔融、水淬、研磨制成的胶凝材料，胶凝材料以其较大的比表面积和活性，从而增加了胶凝材料与其它拌合物之间的粘性，改善界面结构,增加密实度，也就相当于增加了胶凝材料与拌合物之间的摩擦力，从而能够有效地防止轻骨料上浮，克服了现有技术中轻骨料用于自密实混凝土中时存在离析、泌水的问题。
High-speed rail ballastless track self-compacting concrete based on cementing material and preparation method
The invention discloses high-speed rail ballastless track self-compacting concrete based on a cementing material and a preparation method, and belongs to the technical field of self-compacting concrete. The self-compacting concrete for the ballastless track of the high-speed rail is prepared from cement, a cementing material, fine aggregate, coarse aggregate, fly ash, an additive and a proper amount of water. According to the formula of the self-compacting concrete, the cementing material prepared by taking the floating beads and the quartz sand as raw materials through high-temperature melting, water quenching and grinding is added, and the cementing material has relatively large specific surface area and activity, so the viscosity between the cementing material and other mixtures is increased, the interface structure is improved, and the compactness is increased; in other words, the friction force between the cementing material and the mixture is increased equivalently, so the lightweight aggregate can be effectively prevented from floating upwards, and the problems of segregation and bleeding when the lightweight aggregate is used in the self-compacting concrete in the prior artare solved.
本发明公开了一种基于胶凝材料的高铁无砟轨道自密实混凝土及制备方法，属于自密实混凝土技术领域。该高铁无砟轨道自密实混凝土由水泥、胶凝材料、细骨料、粗骨料、粉煤灰、外加剂和适量的水制成。本发明所述自密实混凝土配方中，加入了以漂珠与石英砂为原料，经过高温熔融、水淬、研磨制成的胶凝材料，胶凝材料以其较大的比表面积和活性，从而增加了胶凝材料与其它拌合物之间的粘性，改善界面结构,增加密实度，也就相当于增加了胶凝材料与拌合物之间的摩擦力，从而能够有效地防止轻骨料上浮，克服了现有技术中轻骨料用于自密实混凝土中时存在离析、泌水的问题。
High-speed rail ballastless track self-compacting concrete based on cementing material and preparation method
一种基于胶凝材料的高铁无砟轨道自密实混凝土及制备方法
2020-11-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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