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Nano-reinforced engineering cement-based composite material and preparation method thereof
The invention discloses a nano reinforced engineering cement-based composite material and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: 100-400 parts of Portland cement, 300-1200 parts of sand, 1-3 parts of a polycarboxylate superplasticizer modified nano silicon dioxide solvent and 50-200 parts of water. The preparation method comprises the following steps: (1) mixing Portland cement, water and sand to obtain a mixture; and (2) adding the polycarboxylate superplasticizer modified nano-silica into the mixture, and mixing to obtain the nano-reinforced engineering cement-based composite material. The self-made polycarboxylate superplasticizer is adopted to modify the nano silicon dioxide silica sol, so that the nano silicon dioxide silica sol achieves the effects of high dispersity and high stability, and the nano silicon dioxide silica sol is added into a cement-based material in a low-dosage form to achieve the effect of enhancing the performance of a cement product. Compared with the prior art without the nano silicon dioxide, the compressive strength and the breaking strength of the product are improved to different degrees, and the water absorption rate of the product is reduced to different degrees.
本发明公开了一种纳米增强工程水泥基复合材料及其制备方法，该复合材料按重量份包含以下原料：硅酸盐水泥100‑400份、砂300‑1200份、聚羧酸减水剂改性纳米二氧化硅溶剂1‑3份、水50‑200份。该制备方法为：(1)将硅酸盐水泥、水、砂混合，得混合料；(2)将聚羧酸减水剂改性纳米二氧化硅加入到混合料中混合，即得到所述纳米增强工程水泥基复合材料。本发明采用自制聚羧酸减水剂对纳米二氧化硅硅溶胶进行改性，使其达到高分散性，高稳定性的效果，并且以低掺量形式添加到水泥基材料中达到增强水泥制品性能的效果。产品抗压抗折强度与未添加纳米二氧化硅相比具有不同程度的提高，而产品的吸水率具有不同程度的降低。
Nano-reinforced engineering cement-based composite material and preparation method thereof
The invention discloses a nano reinforced engineering cement-based composite material and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: 100-400 parts of Portland cement, 300-1200 parts of sand, 1-3 parts of a polycarboxylate superplasticizer modified nano silicon dioxide solvent and 50-200 parts of water. The preparation method comprises the following steps: (1) mixing Portland cement, water and sand to obtain a mixture; and (2) adding the polycarboxylate superplasticizer modified nano-silica into the mixture, and mixing to obtain the nano-reinforced engineering cement-based composite material. The self-made polycarboxylate superplasticizer is adopted to modify the nano silicon dioxide silica sol, so that the nano silicon dioxide silica sol achieves the effects of high dispersity and high stability, and the nano silicon dioxide silica sol is added into a cement-based material in a low-dosage form to achieve the effect of enhancing the performance of a cement product. Compared with the prior art without the nano silicon dioxide, the compressive strength and the breaking strength of the product are improved to different degrees, and the water absorption rate of the product is reduced to different degrees.
本发明公开了一种纳米增强工程水泥基复合材料及其制备方法，该复合材料按重量份包含以下原料：硅酸盐水泥100‑400份、砂300‑1200份、聚羧酸减水剂改性纳米二氧化硅溶剂1‑3份、水50‑200份。该制备方法为：(1)将硅酸盐水泥、水、砂混合，得混合料；(2)将聚羧酸减水剂改性纳米二氧化硅加入到混合料中混合，即得到所述纳米增强工程水泥基复合材料。本发明采用自制聚羧酸减水剂对纳米二氧化硅硅溶胶进行改性，使其达到高分散性，高稳定性的效果，并且以低掺量形式添加到水泥基材料中达到增强水泥制品性能的效果。产品抗压抗折强度与未添加纳米二氧化硅相比具有不同程度的提高，而产品的吸水率具有不同程度的降低。
Nano-reinforced engineering cement-based composite material and preparation method thereof
一种纳米增强工程水泥基复合材料及其制备方法
JIANG JINYANG (author) / MIAO JIANXIONG (author) / LU LIQUN (author)
2022-11-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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