A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steam-curing-free ultra-high performance concrete as well as preparation method and application thereof
The invention belongs to the technical field of inorganic materials, and particularly relates to steam-curing-free ultra-high performance concrete as well as a preparation method and application thereof. According to the invention, the early strength performance of the early strength agent is fully utilized, and the early strength agent is utilized to promote the early hydration reaction of the cement, so that the steam-curing-free link of the prefabricated part is realized, and the production cost is effectively reduced. The gelling system is composed of cement, fly ash and silica fume, the closest packing theory is adopted for design, the use amount of each gelling material is calculated through a minimum water demand test method, and the closest packing state is achieved. The expansion degree of the steam-curing-free ultra-high performance concrete is 270-290 mm, the 18-20 h compressive strength is larger than or equal to 24.0 MPa, the 1d compressive strength is larger than or equal to 30.0 MPa, the 3d compressive strength is larger than or equal to 80.0 MPa, and the requirements for early demolding strength and steam-curing-free of small prefabricated parts are met.
本发明属于无机材料技术领域，具体涉及一种免蒸养超高性能混凝土及其制备方法和应用。本发明充分利用早强剂的早强性能，利用早强剂促进水泥前期的水化反应，实现了预制构件免蒸养环节，有效地降低了生产成本。本发明的胶凝体系由水泥、粉煤灰和硅灰组成，采用最紧密堆积理论设计，通过最小需水量试验方法计算各胶凝材料的用量，达到最紧密堆积状态。本发明提供的免蒸养超高性能混凝土的扩展度为270～290mm，18～20h抗压强度≥24.0MPa，1d抗压强度≥30.0MPa，3d抗压强度≥80.0MPa，满足小型预制构件早期脱模强度和免蒸养要求。
Steam-curing-free ultra-high performance concrete as well as preparation method and application thereof
The invention belongs to the technical field of inorganic materials, and particularly relates to steam-curing-free ultra-high performance concrete as well as a preparation method and application thereof. According to the invention, the early strength performance of the early strength agent is fully utilized, and the early strength agent is utilized to promote the early hydration reaction of the cement, so that the steam-curing-free link of the prefabricated part is realized, and the production cost is effectively reduced. The gelling system is composed of cement, fly ash and silica fume, the closest packing theory is adopted for design, the use amount of each gelling material is calculated through a minimum water demand test method, and the closest packing state is achieved. The expansion degree of the steam-curing-free ultra-high performance concrete is 270-290 mm, the 18-20 h compressive strength is larger than or equal to 24.0 MPa, the 1d compressive strength is larger than or equal to 30.0 MPa, the 3d compressive strength is larger than or equal to 80.0 MPa, and the requirements for early demolding strength and steam-curing-free of small prefabricated parts are met.
本发明属于无机材料技术领域，具体涉及一种免蒸养超高性能混凝土及其制备方法和应用。本发明充分利用早强剂的早强性能，利用早强剂促进水泥前期的水化反应，实现了预制构件免蒸养环节，有效地降低了生产成本。本发明的胶凝体系由水泥、粉煤灰和硅灰组成，采用最紧密堆积理论设计，通过最小需水量试验方法计算各胶凝材料的用量，达到最紧密堆积状态。本发明提供的免蒸养超高性能混凝土的扩展度为270～290mm，18～20h抗压强度≥24.0MPa，1d抗压强度≥30.0MPa，3d抗压强度≥80.0MPa，满足小型预制构件早期脱模强度和免蒸养要求。
Steam-curing-free ultra-high performance concrete as well as preparation method and application thereof
一种免蒸养超高性能混凝土及其制备方法和应用
GUO HAIZHEN (author) / WEI DINGBANG (author) / WEN DECHENG (author) / TANG WEIBIN (author) / REN GUOBIN (author) / HU LIEN (author) / SHAO FEIFEI (author) / LI DENGKE (author) / ZHANG XIN (author)
2024-05-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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