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

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...

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.

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