A 3D-printable copper slag electromagnetic wave-absorbing concrete and a method of using the same

A 3D printing, electromagnetic wave absorption technology, applied in the direction of additive processing, etc., to achieve excellent electromagnetic wave absorption performance, reduce the influence of electromagnetic interference, excellent fluidity and extrudability.
CN108609947BActive Publication Date: 2020-10-16HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2020-10-16

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Abstract

The invention relates to 3D-printable copper slag electromagnetic wave-absorbing concrete and a use method thereof. The concrete includes, by weight, 6.8-7.2 parts of quick-hardening ordinary Portlandcement, 6.9-7.1 parts of quartz sand, 1.65-1.75 parts of copper slag, and 0.28-0.71 parts of copper powder composed of brass powder and red copper powder according to the weight ratio of 7:2.5-3.5, 0.75-0.85 parts of silica fume, 0.09-0.15 parts of a water reducer, 0.04-0.07 parts of basalt fiber being 11-14 mm in length, 0.003-0.005 parts of hydroxypropyl methyl cellulose being 20,000-70,000 inviscosity, and 1.70-1.74 parts of water. With the copper slag and copper powder as raw materials, the concrete has both the printability and electromagnetic wave-absorbing effect of the copper slag and copper powder, so that the concrete allows 3D printing and can achieve more than 90% in electromagnetic wave absorption in the bandwidth of 3.4 GHz.
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Description

technical field

[0001] The invention relates to the technical field of 3D printing concrete, in particular to a 3D printable copper slag electromagnetic wave-absorbing concrete and a method for using the same. Background technique

[0002] Architectural-grade 3D printing rapid prototyping technology is a new construction technology that uses mechatronics technology to automatically print cement-based materials layer by layer into the designed structure. 3D printing technology has the advantages of fast, flexible and high efficiency, and has achieved significant development in roads, bridges, construction and other fields. Concrete 3D printing technology can use various solid cementitious materials, carbon materials, metal materials and liquid chemical additives for the preparation of materials, which is conducive to improving the functionality and durability of materials. At the same time, 3D printing concrete technology has also been widely promoted due to its many advanta...

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
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