All-solid waste fiber reinforced geopolymer composite material suitable for 3D printing technology

A 3D printing and geopolymer technology, applied in the direction of additive processing, cement production, etc., can solve the problems of high cost and unfavorable application of nano-graphene, and achieve the effect of improving sustainability, considerable ductility, and dense and smooth surface

Active Publication Date: 2021-12-07
无锡初如企业管理合伙企业(有限合伙)
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of nano-graphene is relatively expensive, which is not conducive to a large number of applications in engineering

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
  • All-solid waste fiber reinforced geopolymer composite material suitable for 3D printing technology
  • All-solid waste fiber reinforced geopolymer composite material suitable for 3D printing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] According to the number of parts by mass, raw materials are weighed: 25 parts of aggregate, 75 parts of cementitious material (in terms of mass fraction, 30% of fly ash, 60% of slag, 10% of silica fume), PVA fiber (2% of volumetric dosage) ), carbon nanotubes (2% of aggregate and cementitious material gross mass), alkali activator (add 650mL alkali activator in the mixture of every kilogram aggregate and cementitious material);

[0049] Wherein the preparation method of the alkali activator: dissolve the NaOH solid in deionized water in proportion to prepare a 6mol / L sodium hydroxide solution, place it at room temperature for 24 hours until the solution is cooled to room temperature, add an aqueous solution of sodium silicate in a mass ratio of 3:7 ( Na 2 O nSiO 2 , n=1.5), stir evenly to obtain alkali activation solution for subsequent use;

[0050] The preparation method is as follows ( figure 2 Schematic flow chart for the preparation of concrete composite materi...

Embodiment 2

[0055] With embodiment 1, the difference is that according to the number of parts by mass, raw materials are weighed: 25 parts of aggregate, 75 parts of cementitious material (in terms of mass fraction, fly ash 30%, slag 60%, silica fume 10%), PVA Fiber (2% of volume dosage), carbon nanotube (2% of aggregate and cementitious material total mass), alkali activator (add 650mL alkali activator in the mixture of every kilogram of aggregate and cementitious material);

[0056] Wherein the alkali activator preparation method: NaOH solid is dissolved in deionized water in proportion to prepare the sodium hydroxide solution of 8mol / L, place at room temperature for 24 hours until the solution is cooled to room temperature, add sodium silicate aqueous solution by 3:7 mass ratio ( Na 2 O nSiO 2 , n=1.5), and stir evenly to obtain an alkali activation solution for later use. The initial setting time of the slurry was determined to be 10 minutes; the compressive strength of the product d...

Embodiment 3

[0058] With embodiment 1, the difference is that according to the number of parts by mass, raw materials are weighed: 25 parts of aggregate, 75 parts of cementitious material (in terms of mass fraction, fly ash 30%, slag 60%, silica fume 10%), PVA Fiber (2% of volume dosage), carbon nanotube (2% of aggregate and cementitious material total mass), alkali activator (add 650mL alkali activator in the mixture of every kilogram of aggregate and cementitious material);

[0059] Wherein the preparation method of the alkali activator: the NaOH solid is dissolved in deionized water in proportion to prepare a 10mol / L sodium hydroxide solution, placed at room temperature for 24 hours until the solution is cooled to room temperature, and added in a 3:7 mass ratio of sodium silicate aqueous solution ( Na 2 O nSiO 2 , n=1.5), and stir evenly to obtain an alkali activation solution for later use. The initial setting time of the slurry was determined to be 10 minutes; after 28 days of natur...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of solid waste resource utilization and geopolymer concrete preparation, in particular to an all-solid waste fiber reinforced geopolymer composite material suitable for a 3D printing technology. The all-solid waste fiber reinforced geopolymer composite material comprises the following raw materials in parts by mass: 20-30 parts of aggregate, 70-80 parts of a cementing material, carbon nanotubes, PVA fibers and an alkali activator, wherein the cementing material comprises the following components in percentage by mass: 15-30% of fly ash, 55-65% of slag and 10-25% of silica fume; and the aggregate is regenerated machine-made sand. The all-solid-waste ultra-high-performance geopolymer concrete provided by the invention can reach initial setting within 10-25 minutes after being discharged, and meets the 3D printing requirement. Besides, the fly ash, the slag and the regenerated machine-made sand are all derived from industrial building solid wastes, so that the waste of the solid wastes can be effectively reduced, the sustainability of the building is improved, and an efficient, environment-friendly and energy-saving solution is provided for treatment after the building is demolished.

Description

technical field [0001] The invention relates to the technical field of solid waste resource utilization and preparation of geopolymer concrete, in particular to an all-solid waste fiber-reinforced geopolymer composite material suitable for 3D printing technology. Background technique [0002] With the rise of computer technology, 3D printing technology has developed rapidly and has been widely used in medical, aerospace, construction, electronics, clothing, food and other fields. In the construction industry, due to the advantages of 3D printing technology, such as moldless and refined, its application level also promotes the progress of the entire industry. In addition, as a large amount of industrial solid particle waste is produced in the production process, the use of slag, fly ash and other substitutes as cementitious materials provides the possibility for sustainable and green development of the industry. In recent decades, the continuous in-depth understanding of geo...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B33Y10/00B33Y70/10
CPCC04B28/006B33Y10/00B33Y70/10C04B2111/00181C04B2201/52C04B18/167C04B14/026C04B16/0641Y02P40/10
Inventor 蔡景明张聪李吴刚张勇张建鲁晓源
Owner 无锡初如企业管理合伙企业(有限合伙)
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