A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recycled fine aggregate-magnesium oxide-based expanding agent ultra-high performance concrete and preparation method thereof
The invention discloses recycled fine aggregate-magnesium oxide-based expanding agent ultra-high performance concrete and a preparation method thereof, and relates to the technical field of building materials. The low-shrinkage ultra-high performance concrete is prepared from the recycled fine aggregate and the three magnesium oxide-based expanding agents, the recycled fine aggregate serves as an internal curing material and is compounded with the natural aggregate, water is continuously released and supplied to a hydration reaction of a cementing material, a hydration product is generated, the microstructure performance is improved, and therefore the internal curing effect is achieved; meanwhile, the effect of the magnesium oxide expanding agent is combined, so that hydration heat and shrinkage of the ultra-high performance concrete are effectively reduced, non-structural cracks of the ultra-high performance concrete are controlled, the strength of the ultra-high performance concrete is improved, and the ultra-high performance concrete has important economic value and environmental protection significance.
本发明公开了一种再生细骨料‑氧化镁基膨胀剂超高性能混凝土及其制备方法，涉及建筑材料技术领域。本发明采用再生细骨料和三种氧化镁基膨胀剂制备低收缩超高性能混凝土，其中，再生细集料作为内养护材料，与天然集料进行复配，并持续释放水分，供给胶凝材料的水化反应，生成水化产物，提高微观结构性能，从而起到内养护的作用，促进混凝土基体强度持续发展，同时结合氧化镁膨胀剂的作用，有效降低超高性能混凝土水化热和收缩，控制超高性能混凝土非结构性裂缝，提高超高性能混凝土强度，具有重要的经济价值和环保意义。
Recycled fine aggregate-magnesium oxide-based expanding agent ultra-high performance concrete and preparation method thereof
The invention discloses recycled fine aggregate-magnesium oxide-based expanding agent ultra-high performance concrete and a preparation method thereof, and relates to the technical field of building materials. The low-shrinkage ultra-high performance concrete is prepared from the recycled fine aggregate and the three magnesium oxide-based expanding agents, the recycled fine aggregate serves as an internal curing material and is compounded with the natural aggregate, water is continuously released and supplied to a hydration reaction of a cementing material, a hydration product is generated, the microstructure performance is improved, and therefore the internal curing effect is achieved; meanwhile, the effect of the magnesium oxide expanding agent is combined, so that hydration heat and shrinkage of the ultra-high performance concrete are effectively reduced, non-structural cracks of the ultra-high performance concrete are controlled, the strength of the ultra-high performance concrete is improved, and the ultra-high performance concrete has important economic value and environmental protection significance.
本发明公开了一种再生细骨料‑氧化镁基膨胀剂超高性能混凝土及其制备方法，涉及建筑材料技术领域。本发明采用再生细骨料和三种氧化镁基膨胀剂制备低收缩超高性能混凝土，其中，再生细集料作为内养护材料，与天然集料进行复配，并持续释放水分，供给胶凝材料的水化反应，生成水化产物，提高微观结构性能，从而起到内养护的作用，促进混凝土基体强度持续发展，同时结合氧化镁膨胀剂的作用，有效降低超高性能混凝土水化热和收缩，控制超高性能混凝土非结构性裂缝，提高超高性能混凝土强度，具有重要的经济价值和环保意义。
Recycled fine aggregate-magnesium oxide-based expanding agent ultra-high performance concrete and preparation method thereof
再生细骨料-氧化镁基膨胀剂超高性能混凝土及其制备方法
CHENG SHUKAI (author) / WU ZIYANG (author) / CHEN XUYONG (author) / WU QIAOYUN (author) / YOU XIAO (author) / SEO WOONG (author) / TU YANPING (author)
2022-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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