3D-printable ultra-high performance concrete as well as preparation method and use method thereof

An ultra-high-performance, 3D printing technology, applied in the field of concrete, can solve the problems of not being able to inherit the high strength and high toughness of UHPC
CN111499314AActive Publication Date: 2020-08-07HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2020-08-07

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Abstract

The invention provides 3D-printable ultra-high performance concrete, and belongs to the technical field of concrete. The 3D-printable ultra-high performance concrete provided by the invention comprises the following components in parts by weight: 600 to 620 parts of Portland cement of which the strength grade is not lower than 42.5, 190 to 210 parts of silica fume, 100 to 120 parts of fly ash, 330to 340 parts of quartz powder, 350 to 370 parts of a fine aggregate, 500 to 510 parts of a coarse aggregate, 144 to 200 parts of steel fibers, 8 to 22 parts of a water reducing agent, 1 to 3 parts ofcellulose, and a stabilizer, wherein the stabilizer comprises 60 to 80 parts of sulfoaluminate cement and / or 5 to 8 parts of clay minerals. The ultra-high performance concrete provided by the invention can be used for 3D printing, and the defect that UHPC is difficult for 3D printing molding is overcome; and the prepared 3D-printable UHPC can achieve mechanical properties equivalent to those of conventional UHPC, and has the characteristics of high strength and high toughness.
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Description

technical field

[0001] The invention belongs to the technical field of concrete, and in particular relates to a 3D-printable ultra-high performance concrete and a preparation method and application method thereof. Background technique

[0002] The concrete 3D printing construction process subverts the traditional building construction process, and has the advantages of intelligence, flexibility, speed and no mold. However, 3D printing molding components based on the modification of traditional building materials inherit the disadvantages of low tensile strength, easy cracking and high brittleness of traditional building materials, which has become one of the biggest bottlenecks restricting the further scale development of concrete 3D printing.

[0003] As a new type of building material, ultra-high performance concrete (UHPC) has greatly improved the shortcomings of traditional building materials in terms of tensile strength and toughness. However, the existing UHPC materia...

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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