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A platform for research: civil engineering, architecture and urbanism
Quick-hardening early-strength ultrahigh-performance magnesium phosphate cement-based material
The invention discloses a novel ultrahigh-performance magnesium phosphate cement-based material which has the characteristics of quick hardening and early strength and is simple and convenient to maintain, and is prepared from dead burned magnesium oxide, basic hydrophosphate, silica fume, an ultrafine mineral admixture, steel fibers, sand and water as raw materials. The problems that existing ultra-high-performance concrete is tedious in curing, slow in strength development, large in site construction difficulty and difficult to reinforce and repair, and a magnesium phosphate cement fiber reinforced material is low in mechanical property, cannot meet the mechanical property requirement of the ultra-high-performance concrete and is limited in application range can be solved. The obtained ultrahigh-performance magnesium phosphate cement-based material has ultrahigh strength (the highest 28-day strength can reach 212 MPa), is simple and convenient to maintain (air maintenance) and quick to harden and has early strength (the one-day strength can reach 70 MPa or above), convenience is provided for field construction and emergency repair of materials, the application range of magnesium phosphate cement is expanded, good economic benefits and environmental benefits are achieved, and the material is worthy of popularization and application. The method is suitable for large-scale popularization.
本发明公开了一种具有快硬早强特性、养护简便的新型超高性能磷酸镁水泥基材料，其是以重烧氧化镁、碱式磷酸氢盐、硅灰、超细矿物掺合料、钢纤维、砂、水为原料制成，可解决现有超高性能混凝土养护繁琐、强度发展缓慢、现场施工难度大、材料加固修补困难，以及磷酸镁水泥纤维增强材料力学性能较低，无法达到超高性能混凝土力学性能要求，应用范围受限的问题。本发明所得超高性能磷酸镁水泥基材料具有超高强度（28 d强度最高可达212 MPa），且其养护简便（空气养护）、快硬早强（1 d强度可达70 MPa以上），为现场施工及材料的应急抢修提供了便利，并拓展磷酸镁水泥的应用范围，具有良好的经济效益及环境效益，适合大规模推广运用。
Quick-hardening early-strength ultrahigh-performance magnesium phosphate cement-based material
The invention discloses a novel ultrahigh-performance magnesium phosphate cement-based material which has the characteristics of quick hardening and early strength and is simple and convenient to maintain, and is prepared from dead burned magnesium oxide, basic hydrophosphate, silica fume, an ultrafine mineral admixture, steel fibers, sand and water as raw materials. The problems that existing ultra-high-performance concrete is tedious in curing, slow in strength development, large in site construction difficulty and difficult to reinforce and repair, and a magnesium phosphate cement fiber reinforced material is low in mechanical property, cannot meet the mechanical property requirement of the ultra-high-performance concrete and is limited in application range can be solved. The obtained ultrahigh-performance magnesium phosphate cement-based material has ultrahigh strength (the highest 28-day strength can reach 212 MPa), is simple and convenient to maintain (air maintenance) and quick to harden and has early strength (the one-day strength can reach 70 MPa or above), convenience is provided for field construction and emergency repair of materials, the application range of magnesium phosphate cement is expanded, good economic benefits and environmental benefits are achieved, and the material is worthy of popularization and application. The method is suitable for large-scale popularization.
本发明公开了一种具有快硬早强特性、养护简便的新型超高性能磷酸镁水泥基材料，其是以重烧氧化镁、碱式磷酸氢盐、硅灰、超细矿物掺合料、钢纤维、砂、水为原料制成，可解决现有超高性能混凝土养护繁琐、强度发展缓慢、现场施工难度大、材料加固修补困难，以及磷酸镁水泥纤维增强材料力学性能较低，无法达到超高性能混凝土力学性能要求，应用范围受限的问题。本发明所得超高性能磷酸镁水泥基材料具有超高强度（28 d强度最高可达212 MPa），且其养护简便（空气养护）、快硬早强（1 d强度可达70 MPa以上），为现场施工及材料的应急抢修提供了便利，并拓展磷酸镁水泥的应用范围，具有良好的经济效益及环境效益，适合大规模推广运用。
Quick-hardening early-strength ultrahigh-performance magnesium phosphate cement-based material
一种快硬早强的超高性能磷酸镁水泥基材料
LIN XUJIAN (author) / WEI CHUNHAO (author)
2022-08-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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