Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Potassium magnesium phosphate cement-based composite material with super early strength and super high performance and preparation method thereof
The invention relates to a super-early-strength ultra-high-performance potassium magnesium phosphate cement-based composite material and a preparation method thereof.The super-early-strength ultra-high-performance potassium magnesium phosphate cement-based composite material (UHPMKPCC) takes dead burned magnesium oxide and monopotassium phosphate as cement raw materials, takes silica fume as one of cementing materials, and takes calcium carbonate as one of the cementing materials; wollastonite powder, metakaolin, fly ash, sodium dihydrogen phosphate and the like are used as auxiliary cementing materials, quartz sand is used as aggregate, and a composite retarder and a water reducing agent are adopted to jointly realize preparation and application of the UHPMKPCC with the ultra-low water-binder ratio. Compared with the existing ultra-high performance Portland cement-based material (UHPC) technology, the UHPMKPCC disclosed by the invention has the advantages of remarkable ultra-early strength mechanical property, low drying shrinkage and the like; compared with an existing ultrahigh-performance magnesium ammonium phosphate cement-based material technology, the UHPMKPCC has the advantages that the setting time can be effectively regulated and controlled, and no ammonia gas is released. The method can be applied to safe solidification treatment of radioactive nuclear waste in the fields of first-aid repair, rush building and reinforcement in the civil engineering field and safe treatment of nuclear waste.
本发明涉及一种超早强超高性能磷酸钾镁水泥基复合材料及其制备方法，本发明超早强超高性能磷酸钾镁水泥基复合材料（UHPMKPCC）以重烧氧化镁和磷酸二氢钾为水泥原材料，以硅灰为胶凝材料之一，以硅灰石粉、偏高领土、粉煤灰和磷酸二氢钠等为辅助胶凝材料，以石英砂为骨料，并采用复合缓凝剂和减水剂共同实现超低水胶比UHPMKPCC的制备与应用。与现有超高性能硅酸盐水泥基材料（UHPC）技术相比，本发明UHPMKPCC拥有显著的超早强力学性能，并具有低干燥收缩等优点；与现有超高性能磷酸铵镁水泥基材料技术相比，本发明UHPMKPCC具有凝结时间可有效调控、无氨气释放等优点。本发明可应用于土木工程领域的抢修、抢建、加固及核废弃物安全处置领域中放射性核废料安全固化处置等。
Potassium magnesium phosphate cement-based composite material with super early strength and super high performance and preparation method thereof
The invention relates to a super-early-strength ultra-high-performance potassium magnesium phosphate cement-based composite material and a preparation method thereof.The super-early-strength ultra-high-performance potassium magnesium phosphate cement-based composite material (UHPMKPCC) takes dead burned magnesium oxide and monopotassium phosphate as cement raw materials, takes silica fume as one of cementing materials, and takes calcium carbonate as one of the cementing materials; wollastonite powder, metakaolin, fly ash, sodium dihydrogen phosphate and the like are used as auxiliary cementing materials, quartz sand is used as aggregate, and a composite retarder and a water reducing agent are adopted to jointly realize preparation and application of the UHPMKPCC with the ultra-low water-binder ratio. Compared with the existing ultra-high performance Portland cement-based material (UHPC) technology, the UHPMKPCC disclosed by the invention has the advantages of remarkable ultra-early strength mechanical property, low drying shrinkage and the like; compared with an existing ultrahigh-performance magnesium ammonium phosphate cement-based material technology, the UHPMKPCC has the advantages that the setting time can be effectively regulated and controlled, and no ammonia gas is released. The method can be applied to safe solidification treatment of radioactive nuclear waste in the fields of first-aid repair, rush building and reinforcement in the civil engineering field and safe treatment of nuclear waste.
本发明涉及一种超早强超高性能磷酸钾镁水泥基复合材料及其制备方法，本发明超早强超高性能磷酸钾镁水泥基复合材料（UHPMKPCC）以重烧氧化镁和磷酸二氢钾为水泥原材料，以硅灰为胶凝材料之一，以硅灰石粉、偏高领土、粉煤灰和磷酸二氢钠等为辅助胶凝材料，以石英砂为骨料，并采用复合缓凝剂和减水剂共同实现超低水胶比UHPMKPCC的制备与应用。与现有超高性能硅酸盐水泥基材料（UHPC）技术相比，本发明UHPMKPCC拥有显著的超早强力学性能，并具有低干燥收缩等优点；与现有超高性能磷酸铵镁水泥基材料技术相比，本发明UHPMKPCC具有凝结时间可有效调控、无氨气释放等优点。本发明可应用于土木工程领域的抢修、抢建、加固及核废弃物安全处置领域中放射性核废料安全固化处置等。
Potassium magnesium phosphate cement-based composite material with super early strength and super high performance and preparation method thereof
一种超早强超高性能磷酸钾镁水泥基复合材料及其制备方法
XU BIWAN (Autor:in) / ZHAO YIZHOU (Autor:in)
07.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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