Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Composite high-strength low-shrinkage cement-based material and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to a composite high-strength low-shrinkage cement-based material and a preparation method thereof.The preparation process of the composite high-strength low-shrinkage cement-based material mainly comprises the steps that GO-SiO2 is prepared, GO-SiO2 and CaCO3 are compounded to form GO-SiO2-CaCO3 micro powder, and the GO-SiO2-CaCO3 composite high-strength low-shrinkage cement-based material is prepared; the GO-SiO2-CaCO3 composite powder is prepared from the following raw materials in parts by weight: GO-SiO2 accounts for 5 to 20 weight percent of the total mass of the prepared GO-SiO2-CaCO3 composite powder, and the doping amount of GO-SiO2-CaCO3 accounts for 1 to 3 weight percent of the mass of a cement binding material. The preparation method comprises the following steps: preparing nano SiO2 by a sol-gel method, and introducing the nano SiO2 into a GO lamellar structure by a physical intercalation method to prepare the GO-SiO2 composite material; the GO-SiO2 micro powder and the CaCO3 micro powder are combined to prepare the GO-SiO2-CaCO3 composite micro powder, and the GO-SiO2-CaCO3 composite micro powder is doped into the cement-based material, so that the purposes of improving the mechanical property of the cement-based material, reducing the drying shrinkage of the cement-based material and improving the durability of the cement-based material are achieved.
本发明属于建筑材料技术领域，具体涉及一种复合高强低收缩水泥基材料及其制备方法，该材料其制备过程主要包括GO‑SiO2制备，GO‑SiO2和CaCO3复合形成GO‑SiO2‑CaCO3微粉，以及GO‑SiO2‑CaCO3复合高强低收缩水泥基材料制备三个部分；其原料组成按重量份计：GO‑SiO2占制得GO‑SiO2‑CaCO3复合粉体总质量的5～20wt％，GO‑SiO2‑CaCO3掺入量占水泥胶凝材料质量的1～3wt％。本发明通过以溶胶凝胶法制备纳米SiO2，并采用物理插层法将纳米SiO2引入GO片层结构中制备GO‑SiO2复合材料；将GO‑SiO2和CaCO3微粉相结合制备GO‑SiO2‑CaCO3复合微粉，并将其掺入到水泥基材料中，以此达到提高水泥基材料力学性能，降低水泥基材料干燥收缩，提升水泥基材料耐久性的目的。
Composite high-strength low-shrinkage cement-based material and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to a composite high-strength low-shrinkage cement-based material and a preparation method thereof.The preparation process of the composite high-strength low-shrinkage cement-based material mainly comprises the steps that GO-SiO2 is prepared, GO-SiO2 and CaCO3 are compounded to form GO-SiO2-CaCO3 micro powder, and the GO-SiO2-CaCO3 composite high-strength low-shrinkage cement-based material is prepared; the GO-SiO2-CaCO3 composite powder is prepared from the following raw materials in parts by weight: GO-SiO2 accounts for 5 to 20 weight percent of the total mass of the prepared GO-SiO2-CaCO3 composite powder, and the doping amount of GO-SiO2-CaCO3 accounts for 1 to 3 weight percent of the mass of a cement binding material. The preparation method comprises the following steps: preparing nano SiO2 by a sol-gel method, and introducing the nano SiO2 into a GO lamellar structure by a physical intercalation method to prepare the GO-SiO2 composite material; the GO-SiO2 micro powder and the CaCO3 micro powder are combined to prepare the GO-SiO2-CaCO3 composite micro powder, and the GO-SiO2-CaCO3 composite micro powder is doped into the cement-based material, so that the purposes of improving the mechanical property of the cement-based material, reducing the drying shrinkage of the cement-based material and improving the durability of the cement-based material are achieved.
本发明属于建筑材料技术领域，具体涉及一种复合高强低收缩水泥基材料及其制备方法，该材料其制备过程主要包括GO‑SiO2制备，GO‑SiO2和CaCO3复合形成GO‑SiO2‑CaCO3微粉，以及GO‑SiO2‑CaCO3复合高强低收缩水泥基材料制备三个部分；其原料组成按重量份计：GO‑SiO2占制得GO‑SiO2‑CaCO3复合粉体总质量的5～20wt％，GO‑SiO2‑CaCO3掺入量占水泥胶凝材料质量的1～3wt％。本发明通过以溶胶凝胶法制备纳米SiO2，并采用物理插层法将纳米SiO2引入GO片层结构中制备GO‑SiO2复合材料；将GO‑SiO2和CaCO3微粉相结合制备GO‑SiO2‑CaCO3复合微粉，并将其掺入到水泥基材料中，以此达到提高水泥基材料力学性能，降低水泥基材料干燥收缩，提升水泥基材料耐久性的目的。
Composite high-strength low-shrinkage cement-based material and preparation method thereof
一种复合高强低收缩水泥基材料及其制备方法
ZHANG YI (Autor:in) / SHAN YUXI (Autor:in) / HU DEXIN (Autor:in) / SONG MINMEI (Autor:in) / DENG XIANGONG (Autor:in) / LI DONGXU (Autor:in)
06.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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