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A platform for research: civil engineering, architecture and urbanism
Preparation method of nano composite fiber powder for recycled concrete
The invention discloses a preparation method of nano composite fiber powder for recycled concrete. The preparation method comprises the steps of composite sol synthesis, composite fiber precursor preparation, composite fiber powder preparation and the like. According to the preparation method, the technical advantages of a sol-gel method and a fiber spinning technology are utilized, the prepared composite fiber powder has the large length-diameter ratio, the problem of self-brittleness of traditional concrete is solved, meanwhile, the large specific surface area of the composite fiber powder is utilized, the Ca (OH) 2 crystal size can be refined and absorbed, the microstructure of the concrete is homogenized and densified, and the specific surface area of the composite fiber powder is increased. The anti-permeability, compressive strength and other properties of concrete can be improved, and the technical problems of anti-permeability, compressive strength and other properties of common concrete are effectively solved.
本发明公开了一种再生混凝土用纳米复合纤维粉体的制备方法，包括复合溶胶合成、复合纤维前驱体的制备、复合纤维粉体的制备等步骤。该制备方法利用溶胶‑凝胶法和纤维纺丝技术各自的技术优势，制备的复合纤维粉体具有较大的长径比，有助于解决传统混凝土的自脆性，同时利用其较大的比表面积有助于细化和吸收Ca(OH)2晶体尺寸，均匀致密化混凝土的微观结构，可提升混凝土的抗渗性、抗压强度等性能，有效解决了普通混凝土存在的混凝土的抗渗性、抗压强度性能等技术难题。
Preparation method of nano composite fiber powder for recycled concrete
The invention discloses a preparation method of nano composite fiber powder for recycled concrete. The preparation method comprises the steps of composite sol synthesis, composite fiber precursor preparation, composite fiber powder preparation and the like. According to the preparation method, the technical advantages of a sol-gel method and a fiber spinning technology are utilized, the prepared composite fiber powder has the large length-diameter ratio, the problem of self-brittleness of traditional concrete is solved, meanwhile, the large specific surface area of the composite fiber powder is utilized, the Ca (OH) 2 crystal size can be refined and absorbed, the microstructure of the concrete is homogenized and densified, and the specific surface area of the composite fiber powder is increased. The anti-permeability, compressive strength and other properties of concrete can be improved, and the technical problems of anti-permeability, compressive strength and other properties of common concrete are effectively solved.
本发明公开了一种再生混凝土用纳米复合纤维粉体的制备方法，包括复合溶胶合成、复合纤维前驱体的制备、复合纤维粉体的制备等步骤。该制备方法利用溶胶‑凝胶法和纤维纺丝技术各自的技术优势，制备的复合纤维粉体具有较大的长径比，有助于解决传统混凝土的自脆性，同时利用其较大的比表面积有助于细化和吸收Ca(OH)2晶体尺寸，均匀致密化混凝土的微观结构，可提升混凝土的抗渗性、抗压强度等性能，有效解决了普通混凝土存在的混凝土的抗渗性、抗压强度性能等技术难题。
Preparation method of nano composite fiber powder for recycled concrete
一种再生混凝土用纳米复合纤维粉体的制备方法
SHENG JIANSONG (author) / ZENG ZHIYONG (author) / YANG FEI (author) / JIANG LIBEI (author) / LIU JIE (author) / ZHOU WEI (author) / ZHANG YONGLIANG (author)
2022-10-25
Patent
Electronic Resource
Chinese
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