Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
UHPC (Ultra High Performance Concrete) raw material and preparation method thereof
The invention relates to the technical field of building materials, and discloses a UHPC (Ultra High Performance Concrete) raw material. Comprising the following components: 30%-40% of cement, 10%-15% of silica fume, 20%-35% of an active mineral material, 25%-40% of an inactive mineral material, 5%-10% of a bio-based filler, 0.5%-1% of a polycarboxylic acid type super-efficient water reducing agent, 0.1%-0.5% of a microorganism induced calcium carbonate precipitator, 0.1%-0.5% of a natural polymer, 1%-2% of steel fibers and 0.5%-1% of PVA fibers. The invention also discloses a preparation method of the UHPC ultra-high performance concrete, which comprises the following steps: S1, weighing and mixing the raw materials: weighing the raw materials according to the weight percentage, and carrying out two-stage mixing; and S2, wet mixing and bio-based filler activation. Through the technology of inducing calcium carbonate precipitation by using bacteria in the bio-based filler, the self-healing ability of the concrete is improved, the requirement for long-term maintenance is effectively reduced, the durability of the structure is improved, especially in a complex environment, and the problem of microcracks is solved by enhancing the self-repairing ability of the concrete.
本发明涉及建筑材料技术领域，公开了一种UHPC超高性能混凝土原料，按重量百分比计，包括以下组分：水泥30％‑40％、硅灰10％‑15％、活性矿物材料20％‑35％、非活性矿物材料25％‑40％、生物基填料5％‑10％、聚羧酸系超高效减水剂0.5％‑1％、微生物诱导碳酸钙沉淀剂0.1％‑0.5％、天然聚合物0.1％‑0.5％、钢纤维1％‑2％、PVA纤维0.5％‑1％，还公开了一种UHPC超高性能混凝土制备方法，包括以下步骤：S1：称量并混合原材料：按重量百分比称量各种原材料，并进行两阶段混合；S2：湿混合与生物基填料激活。通过利用生物基填料中的细菌诱导碳酸钙沉淀技术，提高了混凝土的自愈合能力，有效降低了长期维护的需求，且有利于提高结构的耐久性，尤其是在复杂环境中，并且通过增强混凝土的自修复能力，以解决微裂缝问题。
UHPC (Ultra High Performance Concrete) raw material and preparation method thereof
The invention relates to the technical field of building materials, and discloses a UHPC (Ultra High Performance Concrete) raw material. Comprising the following components: 30%-40% of cement, 10%-15% of silica fume, 20%-35% of an active mineral material, 25%-40% of an inactive mineral material, 5%-10% of a bio-based filler, 0.5%-1% of a polycarboxylic acid type super-efficient water reducing agent, 0.1%-0.5% of a microorganism induced calcium carbonate precipitator, 0.1%-0.5% of a natural polymer, 1%-2% of steel fibers and 0.5%-1% of PVA fibers. The invention also discloses a preparation method of the UHPC ultra-high performance concrete, which comprises the following steps: S1, weighing and mixing the raw materials: weighing the raw materials according to the weight percentage, and carrying out two-stage mixing; and S2, wet mixing and bio-based filler activation. Through the technology of inducing calcium carbonate precipitation by using bacteria in the bio-based filler, the self-healing ability of the concrete is improved, the requirement for long-term maintenance is effectively reduced, the durability of the structure is improved, especially in a complex environment, and the problem of microcracks is solved by enhancing the self-repairing ability of the concrete.
本发明涉及建筑材料技术领域，公开了一种UHPC超高性能混凝土原料，按重量百分比计，包括以下组分：水泥30％‑40％、硅灰10％‑15％、活性矿物材料20％‑35％、非活性矿物材料25％‑40％、生物基填料5％‑10％、聚羧酸系超高效减水剂0.5％‑1％、微生物诱导碳酸钙沉淀剂0.1％‑0.5％、天然聚合物0.1％‑0.5％、钢纤维1％‑2％、PVA纤维0.5％‑1％，还公开了一种UHPC超高性能混凝土制备方法，包括以下步骤：S1：称量并混合原材料：按重量百分比称量各种原材料，并进行两阶段混合；S2：湿混合与生物基填料激活。通过利用生物基填料中的细菌诱导碳酸钙沉淀技术，提高了混凝土的自愈合能力，有效降低了长期维护的需求，且有利于提高结构的耐久性，尤其是在复杂环境中，并且通过增强混凝土的自修复能力，以解决微裂缝问题。
UHPC (Ultra High Performance Concrete) raw material and preparation method thereof
一种UHPC超高性能混凝土原料及其制备方法
QIU WENHAO (Autor:in) / CHEN DONGSHENG (Autor:in) / LAI XIAOYAN (Autor:in) / LYU ZHENG (Autor:in)
24.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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