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Unreinforced self-reinforced cement-based printing concrete and preparation method thereof

A cement-based, concrete technology, applied in the direction of manufacturing tools, ceramic molding machines, additive processing, etc., can solve the problems of unfavorable self-supporting, unfavorable interlayer bonding, high work performance, etc., to achieve good environmental and ecological benefits, configuration The technology is simple and efficient, promoting the effect of application

Inactive Publication Date: 2020-07-03
JIANGSU VOCATIONAL INST OF ARCHITECTURAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low working performance, bad for interlayer bonding, high working performance, bad for self-supporting
At the same time, working time is a challenging time variable for the continuous work of digital construction 3D printing

Method used

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  • Unreinforced self-reinforced cement-based printing concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] A kind of unreinforced self-reinforced cement-based printed concrete, comprising the following components with mass per unit volume:

[0093] Cemented mixed material: 100 parts;

[0094] Among them, the cemented mixed materials include: 50 parts of cement, 42 parts of fly ash, and 8 parts of aluminum-calcium cement;

[0095] Active admixture: 10 parts;

[0096]6 parts of composite mineral admixture, 4 parts of silica fume.

[0097] Chemically modified material: 2.0 parts;

[0098] Among them, the chemically modified materials include: 0.5 part of clay powder, 1 part of high-efficiency large-scale plasticizer, and 0.5 part of mineral admixture.

[0099] Aggregate: 120 parts;

[0100] Water: 40 parts;

[0101] Fiber: The blending amount is 2.0kg / m3.

[0102] The cement in the above-mentioned cementitious mixture is Portland cement with a strength grade of 52.5MPa;

[0103] The fly ash in the above-mentioned cemented mixed materials is Class F fly ash, the fineness ...

Embodiment 2

[0119] A kind of unreinforced self-reinforced cement-based printed concrete, comprising the following components with mass per unit volume:

[0120] Cemented mixed material: 100 parts;

[0121] Among them, cementing mixed materials include: 65 parts of cement, 30 parts of fly ash, 5 parts of aluminum-calcium cement; 12 parts of active admixture; 7.2 parts of composite mineral admixture, 4.8 parts of silica fume. Chemically modified materials: 2.1 parts;

[0122] Among them, chemical modification materials include: 0.3 parts of clay powder, 1.3 parts of high-efficiency large-scale plasticizer, and 0.5 parts of mineral admixture.

[0123] Aggregate: 110 parts;

[0124] Water: 43 parts;

[0125] Fiber: The blending amount is 1.5kg / m3.

[0126] The cement in the above-mentioned cementitious mixture is Portland cement with a strength grade of 52.5MPa;

[0127] The fly ash in the above-mentioned cemented mixed materials is Class F fly ash, the fineness (45μm sieve) ≤ 30%, the w...

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Abstract

The invention discloses an unreinforced self-reinforced cement-based printing concrete and a preparation method thereof, and belongs to the technical field of 3D printing concrete. The unreinforced self-reinforced cement-based printing concrete comprises the following components in parts by weight: 100 parts of a cementing mixed material, 0.3 to 2.0 parts of a chemical modifying material, which comprises clay powder, an efficient strong plasticizer and a mineral additive; 147 to 175 parts of aggregate; and 33 to 49 parts of water; wherein the doping amount of fibers is 1.5-2.3 kg / m<3>. Material configuration parameters, printing process parameters and structural performance parameters are taken as design objectives, and the requirements of working performance, extrusion performance, self-supporting performance, construction performance, working time and mechanical performance under an unreinforced condition are met. The prepared unreinforced self-reinforced cement-based printing concrete can meet the requirement of large-scale building construction of 3D printing concrete under an unreinforced condition.

Description

technical field [0001] The invention relates to an unreinforced self-reinforcing cement-based printing concrete technology, which belongs to the technical field of 3D printing concrete. Background technique [0002] The construction of traditional concrete structures needs to be designed and constructed according to the drawings, and the construction involves key processes such as supporting formwork, installing steel bars, and pouring concrete. The construction workload is large, the work cycle is long, the working conditions are poor, and the safety is low. sources of danger and potential safety hazards. In the construction of prefabricated concrete structures, through the splitting of structural components, prefabricated components, composite beams, prefabricated columns, composite floors, prefabricated stairs, prefabricated balconies, prefabricated exterior walls, etc. are used, and a large number of prefabricated or composite components are produced in the factory. , o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/04B28B1/00B33Y10/00B33Y70/10
CPCB28B1/001B33Y10/00B33Y70/00C04B28/04C04B28/06C04B2111/00181C04B2201/50C04B7/02C04B18/08C04B18/12C04B14/062C04B18/146C04B14/10C04B2103/30C04B14/06C04B16/0641
Inventor 王军强
Owner JIANGSU VOCATIONAL INST OF ARCHITECTURAL TECH
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