Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength micro-expansion ultra-high performance concrete as well as preparation method and application thereof
The invention provides early-strength micro-expansion ultra-high performance concrete and a preparation method and an application thereof, and belongs to the technical field of building materials, the early-strength micro-expansion ultra-high performance concrete comprises 25-175 parts of desulfurization slag, 25-175 parts of fly ash, 600-905 parts of cement, 81-124 parts of silica fume, 852-1200 parts of sand, 15-26 parts of a water reducing agent, 170-180 parts of steel fiber and water. Through raw material modification, component composition control, component dosage control and component cooperation, the concrete has micro-expansibility, the expansibility is mainly released in the early stage and tends to be stable in the later stage, and the concrete has high compressive strength. The result of the embodiment shows that the expansion rate of the concrete provided by the invention in 3d is 21.12 mu epsilon, the expansion rate in 7d is 61.16 mu epsilon, the expansion rate in 15d is 196.17 mu epsilon, the expansion rate in 28d is 196.68 mu epsilon, and the compressive strength in 90d is 100.07 MPa.
本发明提供了一种早强微膨胀超高性能混凝土及其制备方法和应用，属于建筑材料技术领域，包括：脱硫渣25～175份、粉煤灰25～175份、水泥600～905份、硅灰81～124份、砂子852～1200份、减水剂15～26份、钢纤维170～180份和水。本发明通过原材料改性，控制组分组成及各组分的用量，各组分配合作用，使得混凝土具有微膨胀性，且膨胀性能主要在早期释放，在后期趋于稳定，并具有较高的抗压强度。实施例的结果显示，本发明提供的混凝土的3d膨胀率为21.12με、7d膨胀率为61.16με、15d膨胀率为196.17με、28d膨胀率为196.68με，90d抗压强度为100.07MPa。
Early-strength micro-expansion ultra-high performance concrete as well as preparation method and application thereof
The invention provides early-strength micro-expansion ultra-high performance concrete and a preparation method and an application thereof, and belongs to the technical field of building materials, the early-strength micro-expansion ultra-high performance concrete comprises 25-175 parts of desulfurization slag, 25-175 parts of fly ash, 600-905 parts of cement, 81-124 parts of silica fume, 852-1200 parts of sand, 15-26 parts of a water reducing agent, 170-180 parts of steel fiber and water. Through raw material modification, component composition control, component dosage control and component cooperation, the concrete has micro-expansibility, the expansibility is mainly released in the early stage and tends to be stable in the later stage, and the concrete has high compressive strength. The result of the embodiment shows that the expansion rate of the concrete provided by the invention in 3d is 21.12 mu epsilon, the expansion rate in 7d is 61.16 mu epsilon, the expansion rate in 15d is 196.17 mu epsilon, the expansion rate in 28d is 196.68 mu epsilon, and the compressive strength in 90d is 100.07 MPa.
本发明提供了一种早强微膨胀超高性能混凝土及其制备方法和应用，属于建筑材料技术领域，包括：脱硫渣25～175份、粉煤灰25～175份、水泥600～905份、硅灰81～124份、砂子852～1200份、减水剂15～26份、钢纤维170～180份和水。本发明通过原材料改性，控制组分组成及各组分的用量，各组分配合作用，使得混凝土具有微膨胀性，且膨胀性能主要在早期释放，在后期趋于稳定，并具有较高的抗压强度。实施例的结果显示，本发明提供的混凝土的3d膨胀率为21.12με、7d膨胀率为61.16με、15d膨胀率为196.17με、28d膨胀率为196.68με，90d抗压强度为100.07MPa。
Early-strength micro-expansion ultra-high performance concrete as well as preparation method and application thereof
一种早强微膨胀超高性能混凝土及其制备方法和应用
CHENG ZHI (Autor:in) / MA ZHE (Autor:in) / LIU LAN (Autor:in) / HE LEI (Autor:in) / CHENG XINRONG (Autor:in)
13.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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