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Plant fiber reinforced geopolymer for 3D printing of Zhaozhou Bridge, and preparation method thereof

A plant fiber and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of poor bonding between plant fibers and geopolymers, increase bond strength, and reduce water absorption, so as to reduce water absorption, improve material strength, The effect of increasing the bonding performance

Inactive Publication Date: 2019-03-01
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation method, the plant fibers are pretreated with polyvinyl alcohol solution, so that the surface of the plant fibers is covered with a layer of plastic film to reduce water absorption, and then the surface of the plant fibers is grafted with a coupling agent to increase the bonding strength. , which effectively solves the problem of poor bonding between plant fibers and geopolymers, and the precipitation of sugar in an alkaline environment affects the polymerization reaction.

Method used

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  • Plant fiber reinforced geopolymer for 3D printing of Zhaozhou Bridge, and preparation method thereof
  • Plant fiber reinforced geopolymer for 3D printing of Zhaozhou Bridge, and preparation method thereof
  • Plant fiber reinforced geopolymer for 3D printing of Zhaozhou Bridge, and preparation method thereof

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preparation example Construction

[0063] A preparation method of plant fiber reinforced geopolymer for 3D printing Zhaozhou Bridge, the preparation method comprising the following steps:

[0064] (1) In terms of parts by weight, the above raw materials are divided into four groups, the first group is 0.015-0.035 parts of plant fiber, 0.02-0.05 parts of polyvinyl alcohol solution, the second group is 0.95-1.35 parts of fly ash, hydrogen oxidized 0.025-0.055 parts of calcium powder, 0.03-0.09 parts of slag, 0.08-0.13 parts of silica fume, 0.05-0.08 parts of clay, 1.2-1.4 parts of quartz sand, 0.005-0.012 parts of sodium bentonite, and the third group is coupling agent 0.0035- 0.0065 parts and 0.65-1.2 parts of compound base activator; the fourth group is 0.005-0.009 parts of viscosity modifier and 0.05-0.15 parts of water;

[0065] (2) Mix the two raw materials of the first group until the surface of the plant fiber is covered with a layer of polyvinyl alcohol solution, so that the plant fiber does not stick tog...

Embodiment 1

[0072] This embodiment 3D prints the plant fiber reinforced geopolymer for Zhaozhou Bridge. The composition and content of the geopolymer are as follows in parts by weight:

[0073] 1.1 parts of fly ash;

[0074] 0.03 parts of calcium hydroxide powder;

[0075] 0.02 part of plant fiber;

[0076] 0.04 parts of slag;

[0077] 0.09 parts of silica fume;

[0078] 0.05 parts of clay;

[0079] 1.2 parts of quartz sand;

[0080] 0.75 parts of compound base activator;

[0081] 0.006 parts of sodium bentonite;

[0082] 0.005 part of viscosity modifier;

[0083] 0.025 parts of polyvinyl alcohol solution;

[0084] 0.004 parts of coupling agent;

[0085] 0.05 parts of water;

[0086] The main composition contained in the fly ash is SiO 2 、Al 2 o 3 and CaO, the contents are 48.37%, 28.9% and 4.47%, respectively, and the CaO content is less than 10%, which belongs to low-calcium fly ash. The loss on ignition of fly ash is 5.95%, the moisture content is 0.1%, and the water deman...

Embodiment 3

[0089] In this embodiment, the preparation method of plant fiber reinforced geopolymer for 3D printing Zhaozhou Bridge comprises the following steps:

[0090] (1) In parts by weight, the above raw materials are divided into four groups, the first group is 0.02 part of plant fiber, 0.025 part of polyvinyl alcohol solution, the second group is 1.1 part of fly ash, 0.03 part of calcium hydroxide powder, slag 0.04 parts, 0.09 parts of silica fume, 0.05 parts of clay, 1.2 parts of quartz sand, 0.006 parts of sodium bentonite, the third group is 0.0035 parts of coupling agent and 0.75 parts of compound alkali activator, and the fourth group is 0.005 parts of viscosity modifier 0.06 parts with water;

[0091] (2) Mix the two materials of the first group until the surface of the fiber is slightly covered with a layer of polyvinyl alcohol solution, and the fibers will not stick together, and then dry the material in a natural state for use.

[0092] (3) Put all the materials in the se...

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Abstract

The invention relates to a plant fiber reinforced geopolymer for 3D printing of the Zhaozhou Bridge, and a preparation method thereof. The plant fiber reinforced geopolymer comprises, by weight, 0.95-1.35 parts of fly ash, 0.025-0.055 part of calcium hydroxide powder, 0.015-0.035 part of plant fiber, 0.03-0.09 part of slag, 0.08-0.13 part of silica fume, 0.05-0.08 part of clay, 1.2-1.4 parts of quartz sand, 0.65-1.2 parts of composite alkali activators, 0.005-0.012 part of sodium bentonite, 0.005-0.009 part of viscosity modifier, 0.02-0.05 part of polyvinyl alcohol treatment solution, 0.0035-0.0065 part of coupling agent and 0.05-0.15 part of water. The plant fiber reinforced geopolymer with the plant fibers as toughening materials has the advantages of low cost, low density, regenerability and environmental protection, and is beneficial to promotion of the practical engineering application of 3D printing geopolymer materials.

Description

technical field [0001] The invention relates to the technical field of 3D printing materials, in particular to a plant fiber reinforced geopolymer for 3D printing Zhaozhou Bridge and its preparation and use methods. Background technique [0002] In recent years, construction-level 3D printing technology has made significant progress. 3D printed public facilities (flower beds, stools, bus stops, etc.) are very common. There are also some reports on 3D printed houses and 3D printed bridges. At the same time, 3D printing concrete technology has also developed rapidly due to its many advantages such as design freedom, construction flexibility, fast construction speed, low labor cost, high degree of automation, and low environmental pollution. [0003] At present, there are few reports on the types of geopolymer materials that can be 3D printed, and the use of 3D printed geopolymer materials needs to be coordinated with the working parameters of 3D printers. With the requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B33Y70/00B33Y10/00
CPCB33Y10/00B33Y70/00C04B28/006C04B2111/00181C04B2201/50C04B22/064C04B18/24C04B14/06C04B14/104C04B14/10C04B2103/0068C04B24/26Y02P40/10
Inventor 马国伟周博宇王里
Owner HEBEI UNIV OF TECH
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