A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fluorine-free alkali-free liquid accelerator as well as preparation method and application thereof
The invention provides a fluoride-free alkali-free liquid accelerator as well as a preparation method and application thereof. The fluorine-free alkali-free liquid accelerator comprises the following components in parts by weight: 40-45 parts of aluminum sulfate, 1-5 parts of amorphous aluminum hydroxide, 1-3 parts of nano ferric hydroxide, 5-9 parts of alcohol amine, 0.1-0.4 part of a stabilizer and 40-45 parts of deionized water. Nano ferric hydroxide is introduced, on one hand, the nano ferric hydroxide is used as an alkaline agent to further promote polymerization of aluminum sulfate to increase the stability of a system, and on the other hand, high-activity iron ions are introduced to promote generation of ferrum-containing ettringite, and meanwhile, crystal nucleus sites are provided for hydration products such as ettringite, the coagulation time is shortened, and the early strength is promoted. After the accelerator is mixed with cement, the 1d compressive strength is greater than 16.0 MPa, the 28d compressive strength ratio is greater than 110%, and the 90d compressive strength retention rate is greater than 100%.
本发明提供一种无氟无碱液体速凝剂及其制备方法和应用。该无氟无碱液体速凝剂，包括以下重量份的组分：硫酸铝40～45份、无定形氢氧化铝1～5份、纳米氢氧化铁1～3份、醇胺5～9份、稳定剂0.1～0.4份和去离子水40～45份。本发明引用纳米氢氧化铁，一方面作为碱性剂进一步促进硫酸铝聚合增加体系的稳定性，另一方面引进高活性铁离子在促进含铁钙矾石生成的同时，为水化产物钙矾石等提供晶核位，减少凝结时间和促进早期强度。本发明速凝剂与水泥混合后，1d抗压强度＞16.0MPa，28d抗压强度比＞110％，90d抗压强度保留率＞100％。
Fluorine-free alkali-free liquid accelerator as well as preparation method and application thereof
The invention provides a fluoride-free alkali-free liquid accelerator as well as a preparation method and application thereof. The fluorine-free alkali-free liquid accelerator comprises the following components in parts by weight: 40-45 parts of aluminum sulfate, 1-5 parts of amorphous aluminum hydroxide, 1-3 parts of nano ferric hydroxide, 5-9 parts of alcohol amine, 0.1-0.4 part of a stabilizer and 40-45 parts of deionized water. Nano ferric hydroxide is introduced, on one hand, the nano ferric hydroxide is used as an alkaline agent to further promote polymerization of aluminum sulfate to increase the stability of a system, and on the other hand, high-activity iron ions are introduced to promote generation of ferrum-containing ettringite, and meanwhile, crystal nucleus sites are provided for hydration products such as ettringite, the coagulation time is shortened, and the early strength is promoted. After the accelerator is mixed with cement, the 1d compressive strength is greater than 16.0 MPa, the 28d compressive strength ratio is greater than 110%, and the 90d compressive strength retention rate is greater than 100%.
本发明提供一种无氟无碱液体速凝剂及其制备方法和应用。该无氟无碱液体速凝剂，包括以下重量份的组分：硫酸铝40～45份、无定形氢氧化铝1～5份、纳米氢氧化铁1～3份、醇胺5～9份、稳定剂0.1～0.4份和去离子水40～45份。本发明引用纳米氢氧化铁，一方面作为碱性剂进一步促进硫酸铝聚合增加体系的稳定性，另一方面引进高活性铁离子在促进含铁钙矾石生成的同时，为水化产物钙矾石等提供晶核位，减少凝结时间和促进早期强度。本发明速凝剂与水泥混合后，1d抗压强度＞16.0MPa，28d抗压强度比＞110％，90d抗压强度保留率＞100％。
Fluorine-free alkali-free liquid accelerator as well as preparation method and application thereof
一种无氟无碱液体速凝剂及其制备方法和应用
LI HAIYAN (author) / ZHANG YAJIE (author) / CHEN YONGXU (author) / WANG YUXIN (author) / ZHANG HUILI (author) / CHEN JIYOU (author) / ZHANG HAIBO (author) / GUAN XUEMAO (author) / LUO SHUQIONG (author)
2023-09-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
Alkali-free fluorine-free liquid accelerator as well as preparation and application thereof
| European Patent Office | 2022
| European Patent Office | 2024
Fluorine-free alkali-free liquid accelerator and preparation method thereof
| European Patent Office | 2022
| European Patent Office | 2024
Fluorine-free alkali-free accelerator and preparation method thereof
| European Patent Office | 2022