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A platform for research: civil engineering, architecture and urbanism
Anti-cracking composite material and preparation method thereof
The invention relates to the field of concrete admixtures, and particularly discloses an anti-cracking composite material and a preparation method thereof. The anti-cracking composite material comprises polyvinyl alcohol fibers and a steel fiber-mica powder compound; the preparation method comprises the following steps: blending the polyvinyl alcohol fiber and the alginate fiber to obtain the composite fiber, cutting the composite fiber, and then stirring and mixing the composite fiber and the steel fiber-mica powder compound. When the anti-cracking composite material is mixed into concrete, the steel fibers are mutually lapped in the concrete to form a structural network, mica powder particles on the steel fibers extend into the surrounding concrete to inhibit stripping between the steel fibers and the concrete, and the polyvinyl alcohol fibers are low in elongation, play a role similar to a screen after being uniformly dispersed and inhibit particle components in the concrete from sinking, so that the anti-cracking composite material has a good anti-cracking effect. And the polyvinyl alcohol fibers and the steel fiber-mica powder compound are mutually entangled after being blended, so that dispersion of directional stress is promoted, formation and development of cracks are hindered, and the crack resistance of the concrete is comprehensively improved.
本申请涉及混凝土外加剂的领域，具体公开了一种抗裂合材及其制备方法。抗裂合材包括聚乙烯醇纤维和钢纤维‑云母粉复合物；其制备方法为：将聚乙烯醇纤维和海藻纤维混纺得到复合纤维，对复合纤维进行裁切，然后将复合纤维和钢纤维‑云母粉复合物搅拌混合。当抗裂合材混入混凝土中后，钢纤维在混凝土内相互搭接构成结构网络，钢纤维上的云母粉颗粒伸入周围的混凝土中，抑制钢纤维和混凝土之间发生剥离，聚乙烯醇纤维伸度低，均匀分散后起到类似筛网的作用，抑制混凝土内颗粒组分下沉，减少毛细通道的形成，共混后聚乙烯醇纤维和钢纤维‑云母粉复合物发生相互缠结，促进分散定向应力，阻碍裂缝的形成和发展，从而综合提升了混凝土的抗裂性能。
Anti-cracking composite material and preparation method thereof
The invention relates to the field of concrete admixtures, and particularly discloses an anti-cracking composite material and a preparation method thereof. The anti-cracking composite material comprises polyvinyl alcohol fibers and a steel fiber-mica powder compound; the preparation method comprises the following steps: blending the polyvinyl alcohol fiber and the alginate fiber to obtain the composite fiber, cutting the composite fiber, and then stirring and mixing the composite fiber and the steel fiber-mica powder compound. When the anti-cracking composite material is mixed into concrete, the steel fibers are mutually lapped in the concrete to form a structural network, mica powder particles on the steel fibers extend into the surrounding concrete to inhibit stripping between the steel fibers and the concrete, and the polyvinyl alcohol fibers are low in elongation, play a role similar to a screen after being uniformly dispersed and inhibit particle components in the concrete from sinking, so that the anti-cracking composite material has a good anti-cracking effect. And the polyvinyl alcohol fibers and the steel fiber-mica powder compound are mutually entangled after being blended, so that dispersion of directional stress is promoted, formation and development of cracks are hindered, and the crack resistance of the concrete is comprehensively improved.
本申请涉及混凝土外加剂的领域，具体公开了一种抗裂合材及其制备方法。抗裂合材包括聚乙烯醇纤维和钢纤维‑云母粉复合物；其制备方法为：将聚乙烯醇纤维和海藻纤维混纺得到复合纤维，对复合纤维进行裁切，然后将复合纤维和钢纤维‑云母粉复合物搅拌混合。当抗裂合材混入混凝土中后，钢纤维在混凝土内相互搭接构成结构网络，钢纤维上的云母粉颗粒伸入周围的混凝土中，抑制钢纤维和混凝土之间发生剥离，聚乙烯醇纤维伸度低，均匀分散后起到类似筛网的作用，抑制混凝土内颗粒组分下沉，减少毛细通道的形成，共混后聚乙烯醇纤维和钢纤维‑云母粉复合物发生相互缠结，促进分散定向应力，阻碍裂缝的形成和发展，从而综合提升了混凝土的抗裂性能。
Anti-cracking composite material and preparation method thereof
一种抗裂合材及其制备方法
XIONG HAO (author) / HUANG HAIBIN (author)
2024-02-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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