C30 self-compaction microexpanded concrete-filled steel tube and preparation method thereof
A technology of concrete-filled steel tube and micro-expansion, which is applied in the field of building materials, and can solve problems such as high water-binder ratio, affecting the service characteristics of steel tube concrete, and changing the interfacial tension of slurry
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0043] In embodiment 2~5, the preparation method of described viscosity-increasing and plastic-retaining hyperdispersive admixture comprises the following steps:
[0044] 1) Using methallyl alcohol, ammonia water and propylene oxide as raw materials, sodium methallylate or potassium methallylate as a catalyst, under the conditions of a pressure of 0.10-0.40MPaG and a temperature of 50-150°C , reacted for 3 to 7 hours to prepare a mixture of methallyl alcohol polyoxypropylene ether and triisopropanolamine, the molar ratio of the methallyl alcohol, ammonia and propylene oxide was 1:(0.2 to 0.5) : (5.0~78.0), the consumption of catalyst is 0.10~0.60% of methallyl alcohol quality;
[0045] 2) Take the mixture of methallyl alcohol polyoxypropylene ether and triisopropanolamine prepared in step 1), sodium acrylate sulfonate, methacrylate and water as raw materials, add the mixture with reflux condenser, thermometer and In the three-necked flask of the dropping funnel, heat up to 60...
Embodiment 1
[0049] In embodiment 1, the preparation method of thickening and plastic-retaining ultra-dispersion admixture is roughly the same as embodiment 2~5, and difference is: 1) the mol ratio of methallyl alcohol, ammoniacal liquor and propylene oxide is 1:0.4: 20. The amount of catalyst used is 0.4% of the mass of methallyl alcohol, the reaction pressure is 0.30MPaG, the temperature is 105°C, and the time is 5h; 2) the reaction between methallyl alcohol polyoxypropylene ether and triisopropanolamine Mixture 86%, sodium acrylate sulfonate 3%, methacrylate 8%, water 3%; 3) The molar ratio of methacrylic acid and polypropylene glycol monomethyl ether is 1.18:1, dipropylene glycol monobutyl ether and maleic anhydride The molar ratio is 1.5:1, the reaction temperature is 120°C, and the time is 4h; 4) Polypropylene glycol monomethyl ether methacrylate monomer 82%, diethylene glycol dipropylene glycol monobutyl ether monomer 3%, methyl 8% acrylic acid, 3% dimethylaminoethanol, 4% sodium me...
Embodiment 2
[0068] A C30 self-compacting micro-expansion concrete-filled steel tube is applied to prepare upper and lower concrete-filled steel tube chords of a concrete-filled steel tube truss bridge. The preparation method comprises the following steps:
[0069] 1) take each raw material by the proportioning described in table 3;
[0070] 2) The internal curing material is pre-absorbed. Put the internal curing material in water to absorb water at a mass ratio of 1:15. The water absorption time is 2 to 3 hours, and stir evenly;
[0071] 3) Put the weighed ordinary Portland cement, fly ash, composite expansion agent, crushed stone and river sand into the concrete mixer for dry mixing, and in the process of dry mixing, the weighed micron modified absorbent cotton cellulose Add it into the mixer, fully dry mix it evenly (2~5min), and get the dry mix; mix the pre-absorbed internal curing material with the viscosity-enhancing plastic super-dispersion additive and water, and then put it in the...
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com