Bio-based concrete workability regulator and preparation method thereof

A concrete and conditioner technology, applied in the field of concrete admixtures, can solve the problems of reducing the working performance and pumping performance of concrete, affecting the mechanical properties of hardened concrete, and the lack of compatibility of polycarboxylate superplasticizers, etc., to improve the wrapping property , avoid excessive gas content, improve the effect of coating ability

Pending Publication Date: 2021-10-22
CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes various methods used during making hydraulically setting compositions that include specific ingredients like acids or bases, sugars, oligosaccharides, polysulfonates, synthetic resins such as vinyl chloride copolymers (VC) and styrene butadiene rubber (SBR). These techniques help create strong cohesions between different components while maintaining their shape when solidified. Additionally, these processes involve reacting certain compounds together without adding any other substances at all. Overall, this method allows for efficient manufacturing of concretes containing specialized properties including improved durability, reduced weight per unit volume, enhanced impact resistance, increased flexibility, preventing cracks from forming over time, controllable release characteristics, and effective binding abilities against suspended particulate matter.

Problems solved by technology

This patented technical problem addressed in this patents relates to improves the consistency and stability of hydrous compositions containing fine particles dispersed throughout them due to their unique characteristics. These difficulties include issues like clay slip out from porosities (portholes) and uneven flow behavior over long periods of time. Existing solutions involve adding various types of filler and binder materials based on specific requirements but they cannot achieve complete mixing without causing these drawbacks.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bio-based concrete workability regulator and preparation method thereof
  • Bio-based concrete workability regulator and preparation method thereof
  • Bio-based concrete workability regulator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of bio-based concrete and workability regulator, the specific steps are as follows:

[0036] (1) Weigh 90g glycerol, 56g alkali lignin (weight average molecular weight 30,000), 28g maltose and 3g water-soluble polyvinyl alcohol (weight average molecular weight is 80,000, degree of alcoholysis is 75%) in the reaction vessel , the temperature was raised to 60° C., and the stirring was continued to dissolve to obtain a biomass polyhydroxy melt.

[0037] (2) Continuously add 2g of Nadic anhydride to the biomass polyhydroxy melt in step (1) within 0.5 hour, control the reaction temperature at 80°C, and react for 3 hours to obtain the biomass polyhydroxy unsaturated condensate .

[0038] (3) Add 1 g of triisocyanate dropwise to the biomass polyhydroxy unsaturated condensate in step (2), dropwise for 0.5 hour, control the reaction temperature to 70° C., and react for 3 hours to obtain a biomass polyhydroxy cross-linked body.

[0039] (4) Add deionized water t

Embodiment 2

[0043] A preparation method of bio-based concrete and workability regulator, the specific steps are as follows:

[0044] (1) Take by weighing 45g glycerol, 59g sodium alkali lignin carboxylate (weight average molecular weight 10,000), 22.5g lactose and 3g water-soluble polyvinyl alcohol (weight average molecular weight is 60,000, alcoholysis degree is 88%) In the reaction vessel, the temperature was raised to 50° C., and stirring was continued to dissolve to obtain a biomass polyhydric melt.

[0045] (2) Continuously add 4.5g itaconic anhydride to the biomass polyhydroxy melt in step (1) within 1 hour, control the reaction temperature at 90° C., and react for 2 hours to obtain biomass polyhydroxy unsaturated condensation fit.

[0046] (3) Add 0.8 g of lysine diisocyanate dropwise to the unsaturated condensate of biomass polyhydroxyl in step (2), dropwise for 0.5 hour, control the reaction temperature at 80° C., and react for 4 hours to obtain biomass polyhydroxyl cross-linked b

Embodiment 3

[0051] A preparation method of bio-based concrete and workability regulator, the specific steps are as follows:

[0052] (1) Take by weighing 90g glycerol, 36g potassium alkali lignin carboxylate (weight-average molecular weight 15,000), 27g galactose and 3.6g water-soluble polyvinyl alcohol (weight-average molecular weight is 25,000, alcoholysis degree is 88% ) in a reaction vessel, the temperature is raised to 50° C., and stirring is continued to dissolve to obtain a biomass polyhydroxy melt.

[0053] (2) Continuously add 6.3g maleic anhydride to the biomass polyhydroxy melt in step (1) within 1 hour, control the reaction temperature at 70°C, and react for 3 hours to obtain biomass polyhydroxy unsaturated condensation fit.

[0054] (3) Add 1.8 g of hexamethylene diisocyanate dropwise to the biomass polyhydroxyl unsaturated condensate in step (2), dropwise for 0.5 hour, control the reaction temperature at 80° C., and react for 5 hours to obtain biomass poly Hydroxyl crosslinke

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a bio-based concrete workability regulator and a preparation method thereof. The bio-based concrete workability regulator comprises the following components in parts by weight: 30-50% of glycerol, 20-40% of a lignin derivative, 10-15% of reducing sugar, 1-3% of water-soluble polyvinyl alcohol, 1-5% of unsaturated anhydride, 0.5-1.5% of polyisocyanate, 1-4% of unsaturated carboxylic acid, 2-6% of an unsaturated sulfonic acid derivative and 0.8-3% of an initiator. According to the invention, bio-based macromolecules are adopted as raw materials, the use ratio of chemical raw materials is reduced, a plurality of action sites and cross-linked structures are formed by using a polyhydroxy structure and polyfunctionality of natural polymer derivatives, the coating capacity of slurry to aggregate is improved, concrete coating is improved, the segregation and bleeding phenomena of concrete can be effectively improved, the concrete flowability is not influenced, obvious air entraining and retarding side effects are avoided, and the acting effect is lasting and stable.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap