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Low-shrinkage corrosion-resistant ultrahigh-performance concrete, and preparation method, construction method and application thereof

An ultra-high-performance, corrosion-resistant technology, applied in the field of green ultra-high-performance building materials, can solve problems such as sulfate corrosion resistance, poor acid corrosion resistance, affecting the durability of architectural decoration components, affecting the appearance of architectural decoration components, etc., to achieve high anti-corrosion The effect of folding strength, ease of implementation, and small fluctuations in quality and performance

Active Publication Date: 2019-06-07
TANGSHAN POLAR BEAR BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] However, high-grade Portland cement or white Portland cement is used in the above-mentioned inventions. The use of Portland cement has problems such as high shrinkage, large deformation, and poor installation accuracy. However, it is required to apply to large-scale curtain wall decorative components. Small deformation and high precision, so the above invention is difficult to meet the needs of practical applications
In addition, Portland cement has poor resistance to sulfate corrosion and acid corrosion, and its application in coastal engineering and acid corrosion environments will affect the durability of building decoration components; moreover, Portland cement is prone to efflorescence, which affects building decoration components beautiful

Method used

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  • Low-shrinkage corrosion-resistant ultrahigh-performance concrete, and preparation method, construction method and application thereof
  • Low-shrinkage corrosion-resistant ultrahigh-performance concrete, and preparation method, construction method and application thereof
  • Low-shrinkage corrosion-resistant ultrahigh-performance concrete, and preparation method, construction method and application thereof

Examples

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preparation example Construction

[0046] Furthermore, it is particularly prominent that the cement used in the present invention is high flexural super sulfate cement. The above-mentioned high flexural super sulfate cement refers to the high flexural super sulfate cement in the "high flexural super sulfate cement and its preparation method" disclosed by the publication number CN107827379A, which is the prior research achievement of the applicant . The high flexural super sulfate cement comprises the following raw materials: granulated blast furnace slag, gypsum and high belite sulfoaluminate cement clinker. The use of high flexural super sulfate cement can alleviate the problems of slow hydration and hardening speed, low early strength and easy sanding of existing super sulfate cement due to the inability to fully stimulate the activity of granulated blast furnace slag in the prior art, and The flexural strength of cement can be greatly improved, and the high flexural ultra-sulfate cement has the advantages o...

Embodiment 1－5

[0099] The low-shrinkage and corrosion-resistant ultra-high-performance concrete of Examples 1-5 is mainly prepared from the following raw materials in weight percentages, and the specific raw material components and ratios are shown in Table 1.

[0100] Table 1 Raw material components and ratios of the low-shrinkage corrosion-resistant ultra-high performance concrete of Examples 1-5

[0101]

[0102]

[0103] Note: "-" in the table means that this kind of raw material was not added in this example (the same below).

Embodiment 6－10

[0105] The low-shrinkage and corrosion-resistant ultra-high-performance concrete of Examples 6-10 is mainly prepared from the following raw materials in weight percentages, and the specific raw material components and ratios are shown in Table 2.

[0106] Table 2 Raw material composition and ratio of the low-shrinkage and corrosion-resistant ultra-high performance concrete of Examples 6-10

[0107]

[0108]

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Abstract

The invention belongs to the technical field of green ultrahigh-performance building materials, and relates to low-shrinkage corrosion-resistant ultrahigh-performance concrete, and a preparation method, construction method and application thereof. The concrete comprises the following components in percentage by weight: 49.1-62.9% of high-bending-resistance super-sulfate cement, 20-39.95% of fine aggregates, 0.15-0.5% of a water reducer, 0.04-0.3% of a defoaming agent, 0-0.3% of a coagulant, 1.5-25% of fibers and 0-0.4% of a retarder. According to the low-shrinkage corrosion-resistant ultrahigh-performance concrete provided by the invention, the bending strength after 28 days reaches 32.8 MPa, the compressive strength reaches 165.1 MPa, the free expansion rate in water after 28 days is 0.12%, and the dry shrinkage value after 28 days is 0.035%. Concrete with different flowing properties is prepared to meet application requirements of ultra-high-performance concrete products such as curtain walls, decoration concrete and the like and application requirements of different construction technologies.

Description

technical field [0001] The invention belongs to the technical field of green ultra-high-performance building materials, and in particular relates to a low-shrinkage corrosion-resistant ultra-high-performance concrete and its preparation method, construction method and application. Background technique [0002] In recent years, the application demand for concrete in the field of building materials has greatly increased both in terms of quantity and technical level. With the development of the green building concept, decorative concrete with decorative functions has become a research hotspot in recent years; at the same time, technological progress in the field of concrete has also led to the development of ultra-high performance decorative concrete. [0003] For example, the patent publication number CN101160268A discloses an ultra-high-strength fiber-reinforced cement composition, ultra-high-strength fiber-reinforced mortar or concrete, and ultra-high-strength cement additio...

Claims

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Application Information

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IPC IPC(8): C04B28/06
Inventor 张振秋陈智丰葛仲熙刘成健张淑艳王国兴翟朝阳张淑娟
Owner TANGSHAN POLAR BEAR BUILDING MATERIAL
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