A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method for improving early strength performance of cement by using composite modified nano material
The invention discloses a preparation method for improving the early strength performance of cement by using a composite modified nano material. The composite modified nano material comprises the following components in percentage by weight: 0.2% of nano silicon carbide, 0.1%-0.3% of polyvinylpyrrolidone (PVP), 0.01%-0.02% of triethanolamine TEA, 0.15% of a polycarboxylate superplasticizer PC, and the water-cement ratio is 0.4. Nano silicon carbide and polyvinylpyrrolidone (PVP) are compounded to research the early strength effect, and it is found that the polyvinylpyrrolidone (PVP) can effectively disperse the nano silicon carbide, so that the early strength is obviously improved; nano silicon carbide is compounded with polyvinylpyrrolidone (PVP) and triethanolamine TEA, it is found that ternary compounding can effectively improve the early strength effect of cement, and when the compound early strength agent comprises 0.15% of PC, 0.2% of nano silicon carbide, 0.3% of polyvinylpyrrolidone (PVP) and 0.015% of triethanolamine, and the water cement ratio is 0.4, the early strength of the cement is improved most remarkably, and the early strength of the cement is improved more remarkably. And the internal structure of the cement is more compact.
本发明公开了一种复合改性纳米材料提高水泥早强性能的制备方法，包括以下重量百分比的组分：纳米碳化硅0.2％，聚乙烯吡咯烷酮PVP0.1％～0.3％，三乙醇胺TEA0.01％～0.02％，聚羧酸减水剂PC掺量为0.15％，水灰比0.4。将纳米碳化硅和聚乙烯吡咯烷酮PVP复配来研究早强效果，发现聚乙烯吡咯烷酮PVP能有效分散纳米碳化硅，使得早期强度有明显提升；再将纳米碳化硅与聚乙烯吡咯烷酮PVP和三乙醇胺TEA进行复配，发现三元复配能有效提高水泥的早强效果，且当复配早强剂的组成为PC0.15％，纳米碳化硅0.2％，聚乙烯吡咯烷酮(PVP)0.3％，三乙醇胺0.015％，水灰比为0.4时，使水泥早期强度提高最为显著，水泥内部结构更为致密。
Preparation method for improving early strength performance of cement by using composite modified nano material
The invention discloses a preparation method for improving the early strength performance of cement by using a composite modified nano material. The composite modified nano material comprises the following components in percentage by weight: 0.2% of nano silicon carbide, 0.1%-0.3% of polyvinylpyrrolidone (PVP), 0.01%-0.02% of triethanolamine TEA, 0.15% of a polycarboxylate superplasticizer PC, and the water-cement ratio is 0.4. Nano silicon carbide and polyvinylpyrrolidone (PVP) are compounded to research the early strength effect, and it is found that the polyvinylpyrrolidone (PVP) can effectively disperse the nano silicon carbide, so that the early strength is obviously improved; nano silicon carbide is compounded with polyvinylpyrrolidone (PVP) and triethanolamine TEA, it is found that ternary compounding can effectively improve the early strength effect of cement, and when the compound early strength agent comprises 0.15% of PC, 0.2% of nano silicon carbide, 0.3% of polyvinylpyrrolidone (PVP) and 0.015% of triethanolamine, and the water cement ratio is 0.4, the early strength of the cement is improved most remarkably, and the early strength of the cement is improved more remarkably. And the internal structure of the cement is more compact.
本发明公开了一种复合改性纳米材料提高水泥早强性能的制备方法，包括以下重量百分比的组分：纳米碳化硅0.2％，聚乙烯吡咯烷酮PVP0.1％～0.3％，三乙醇胺TEA0.01％～0.02％，聚羧酸减水剂PC掺量为0.15％，水灰比0.4。将纳米碳化硅和聚乙烯吡咯烷酮PVP复配来研究早强效果，发现聚乙烯吡咯烷酮PVP能有效分散纳米碳化硅，使得早期强度有明显提升；再将纳米碳化硅与聚乙烯吡咯烷酮PVP和三乙醇胺TEA进行复配，发现三元复配能有效提高水泥的早强效果，且当复配早强剂的组成为PC0.15％，纳米碳化硅0.2％，聚乙烯吡咯烷酮(PVP)0.3％，三乙醇胺0.015％，水灰比为0.4时，使水泥早期强度提高最为显著，水泥内部结构更为致密。
Preparation method for improving early strength performance of cement by using composite modified nano material
一种复合改性纳米材料提高水泥早强性能的制备方法
GUAN YANTAI (author) / MA HONGTAO (author) / WANG QINGFENG (author) / WANG ZIXIANG (author) / HE SHUAI (author) / ZI WEI (author)
2024-03-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
| European Patent Office | 2024
Modified high belite cement and method for improving early strength of high belite cement
| European Patent Office | 2015
High-performance cement-based early-strength grouting material and preparation method thereof
| European Patent Office | 2024
Preparation method of modified cement-based composite material
| European Patent Office | 2021