Reinforced concrete for prestressed carbon fiber plate

A carbon fiber board and concrete technology, applied in the field of building materials, can solve the problems of poor concrete performance, low performance reliability, increased cost, etc., and achieve the effect of increasing strength and improving expansion.

Inactive Publication Date: 2022-02-01
广州中创建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although it can be achieved by adding prestressed carbon fiber panels, the performance of the attached concrete is poor, and it is difficult to meet the fusion of the two
[0003] The existing technology, such as application number: CN201711087870.7, publication number: CN107859351A, discloses a multi-strip prestressed carbon fiber plate reinforcement device, which is realized by using anchor plates, but the above method requires a separate mechanical structure and reliable performance Low reliability, and unnecessary cost increase, not easy to disassemble and reuse later

Method used

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  • Reinforced concrete for prestressed carbon fiber plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The reinforced concrete for the prestressed carbon fiber plate of the present embodiment includes the following raw materials in parts by weight:

[0053] Cement: 150 parts,

[0054] Water: 90 parts,

[0055] Clay: 25 parts,

[0056] Strengthening agent: 40 parts,

[0057] Polycarboxylate water reducer: 3 parts,

[0058] Dispersant: 5 parts.

[0059] In the reinforced concrete for the above-mentioned prestressed carbon fiber plate,

[0060] Described cement is P.O 42.5R portland cement;

[0061] The parameters of the clay are as follows:

[0062] SiO 2 The content is 55%, Al 2 o 3 The content is 35%, and the specific surface area is 10200m 2 / kg, particle size D 50 It is 5.5um.

[0063] In the reinforced concrete for the above-mentioned prestressed carbon fiber plate,

[0064] The model of the polycarboxylate water reducer is 412, purchased from Shenyang Xingzhenghe Chemical Co., Ltd.;

[0065] The model of the dispersant is WHDF-S, purchased from Shandong...

Embodiment 2

[0082] The reinforced concrete for the prestressed carbon fiber plate of the present embodiment includes the following raw materials in parts by weight:

[0083] Cement: 200 parts,

[0084] Water: 70 parts,

[0085] Clay: 35 parts,

[0086] Strengthening agent: 20 parts,

[0087] Polycarboxylate water reducer: 6 parts,

[0088] Dispersant: 1 part.

[0089] In the reinforced concrete for the above-mentioned prestressed carbon fiber plate,

[0090] Described cement is P.O 42.5R portland cement;

[0091] The parameters of the clay are as follows:

[0092] SiO 2 The content is 60%, Al 2 o 3 The content is 40%, and the specific surface area is 14100m 2 / kg, particle size D 50 It is 6.5um.

[0093] In the reinforced concrete for the above-mentioned prestressed carbon fiber plate,

[0094] The model of the polycarboxylate water reducer is 412, purchased from Shenyang Xingzhenghe Chemical Co., Ltd.;

[0095] The model of the dispersant is WHDF-S, purchased from Shandong ...

Embodiment 3

[0112] The reinforced concrete for the prestressed carbon fiber plate of the present embodiment includes the following raw materials in parts by weight:

[0113] Cement: 160 parts,

[0114] Water: 85 parts,

[0115] Clay: 28 parts,

[0116] Strengthening agent: 35 parts,

[0117] Polycarboxylate water reducer: 3 parts,

[0118] Dispersant: 5 parts.

[0119] In the reinforced concrete for the above-mentioned prestressed carbon fiber plate,

[0120] Described cement is P.O 42.5R portland cement;

[0121] The parameters of the clay are as follows:

[0122] SiO 2 The content is 55%, Al 2 o 3 The content is 35%, and the specific surface area is 10200m 2 / kg, particle size D 50 It is 5.5um.

[0123] In the reinforced concrete for the above-mentioned prestressed carbon fiber plate,

[0124] The model of the polycarboxylate water reducer is 412, purchased from Shenyang Xingzhenghe Chemical Co., Ltd.;

[0125] The model of the dispersant is WHDF-S, purchased from Shandong...

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Abstract

The invention discloses reinforced concrete for a prestressed carbon fiber plate, and relates to the technical field of building materials. The reinforced concrete for the prestressed carbon fiber plate is prepared from the following raw materials in parts by weight: 150 to 200 parts of cement, 70 to 90 parts of water, 25 to 35 parts of clay, 20 to 40 parts of a reinforcing agent, 3 to 6 parts of a polycarboxylic acid type water reducing agent and 1 to 5 parts of a dispersing agent, the preparation method comprises the following steps: (1) preparing the cement, the water, the clay, the reinforcing agent, the ppolycarboxylic acid type water reducing agent and the dispersing agent, and putting into a warehouse for later use; (2) transferring the raw materials in the step (1) into a stirrer for stirring and mixing, and pouring into a mold with a preset carbon fiber plate; and (3) curing the concrete in the mold in the step (2). According to the prepared concrete, the reinforcing agent is creatively added, the reinforcing agent is composed of aluminum oxide powder, magnesium oxide powder, tetramethyl orthosilicate and sodium acetate, synergistic interaction is achieved, and the comprehensive performance of the concrete is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to reinforced concrete for prestressed carbon fiber boards. Background technique [0002] In recent years, the application of prestressed concrete structure technology has been extended to concrete members strengthened by carbon fiber reinforced composite materials. Existing studies have shown that prestressed carbon fiber plate reinforced composite sheet reinforcement technology is a technology that can make full use of the characteristics of light weight and high strength of carbon fiber reinforced composite sheet, which can greatly improve the cracking load and yield load of components, and effectively delay component cracking. Limit the formation and development of cracks, reduce the width of cracks, inhibit the deformation of components, and improve the working performance of structures. It can be seen that the use of prestressed carbon fiber panels to repair and st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2201/50C04B14/10C04B14/303C04B14/304C04B24/04C04B24/42C04B2103/302C04B2103/408
Inventor 邹锦新
Owner 广州中创建筑科技有限公司
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