Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Compact artificial sandstone and preparation method thereof
The invention discloses a compact artificial sandstone, the sandstone comprises mixed powder and a binder according to a mass ratio of 20-30: 1, the mixed powder comprises clay and quartz sand, the content of the clay is not more than 30%, and the content of the quartz sand is not more than 30%; the artificial sandstone is prepared by ball-milling and uniformly mixing the mixed powder, mixing the mixed powder with the binder, grinding at a constant temperature, pre-pressing in batches, compacting and maintaining pressure, and baking, within 12 hours before compacting, a mold pressure head is turned over at intervals and pressure is increased in a gradient manner, and the interval time is not longer than 6 hours, so that the homogeneity of the artificial rock core obtained by the method is greatly improved, and the production cost is reduced. The standard deviation of the longitudinal wave velocity at different positions on the same plane is lower than 10m/s, and the optimal standard deviation can be lower than 6.5 m/s.
本发明公开了一种致密人造砂岩，所述砂岩包括质量比为20～30:1的混合粉体和粘结剂，所述混合粉体包括含量不高于30％黏土、石英砂；所述人造砂岩由所述混合粉体经球磨混匀、与所述粘结剂混合后恒温碾磨、分批预压、压实保压以及烘烤制得，压实的前12小时内，间隔翻转模具压头并梯度增压，间隔时间不超过6小时，该方法获得的人造岩心均质性大幅提高，同一平面不同位置纵波波速标准偏差低于10m/s，最佳可以低于6.5m/s。
Compact artificial sandstone and preparation method thereof
The invention discloses a compact artificial sandstone, the sandstone comprises mixed powder and a binder according to a mass ratio of 20-30: 1, the mixed powder comprises clay and quartz sand, the content of the clay is not more than 30%, and the content of the quartz sand is not more than 30%; the artificial sandstone is prepared by ball-milling and uniformly mixing the mixed powder, mixing the mixed powder with the binder, grinding at a constant temperature, pre-pressing in batches, compacting and maintaining pressure, and baking, within 12 hours before compacting, a mold pressure head is turned over at intervals and pressure is increased in a gradient manner, and the interval time is not longer than 6 hours, so that the homogeneity of the artificial rock core obtained by the method is greatly improved, and the production cost is reduced. The standard deviation of the longitudinal wave velocity at different positions on the same plane is lower than 10m/s, and the optimal standard deviation can be lower than 6.5 m/s.
本发明公开了一种致密人造砂岩，所述砂岩包括质量比为20～30:1的混合粉体和粘结剂，所述混合粉体包括含量不高于30％黏土、石英砂；所述人造砂岩由所述混合粉体经球磨混匀、与所述粘结剂混合后恒温碾磨、分批预压、压实保压以及烘烤制得，压实的前12小时内，间隔翻转模具压头并梯度增压，间隔时间不超过6小时，该方法获得的人造岩心均质性大幅提高，同一平面不同位置纵波波速标准偏差低于10m/s，最佳可以低于6.5m/s。
Compact artificial sandstone and preparation method thereof
致密人造砂岩及其制备方法
LI DONGQING (Autor:in)
19.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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