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Ultra-high performance cement-based groove type profile

An ultra-high performance, cement-based technology, applied in building thermal insulation materials, infrastructure engineering, structural elements, etc., can solve problems such as high brittleness, poor construction convenience, and large cross-section of structural components

Inactive Publication Date: 2016-03-23
浙江宏日泰耐克新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the low strength and high brittleness of ordinary concrete, the structural members made of it have large cross-sections and poor construction convenience, so there has not yet been a lightweight and convenient assembled profile member similar to steel structural profiles.

Method used

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  • Ultra-high performance cement-based groove type profile
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  • Ultra-high performance cement-based groove type profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Ultra-high performance cement-based channel profiles, of which:

[0082] H=400mm, B=200mm, D=30mm, t=30mm, R=20mm, R 1 = 3mm;

[0083] Ultra-high-performance cement-based composite material, including cementitious material, water and water reducer, the volume of cement accounts for 21%, the cement is P·I cement with a strength grade of 52.5, and the mineral admixture is silica fume and powder Coal ash, accounting for 52.5%.

[0084] The ratio fraction of cement, silica fume and fly ash is numerically analyzed and calculated through the ideal accumulation curve and its particle size cumulative distribution curve;

[0085] 1) the ideal stacking curve formula is:

[0086] P sd =A+(100-A)·(d / D max ) π / 2e ;

[0087] Among them, P sd is the percentage of particles passing through the sieve, A is an empirical constant, d is the diameter of the sieve, D max is the maximum particle size of the particle;

[0088] The value of the empirical constant A is determined by th...

Embodiment 2

[0110] Ultra-high performance cement-based channel profiles, of which:

[0111] H=400mm, B=400mm, D=50mm, t=30mm, R=25mm, R 1 = 5mm;

[0112] Ultra-high performance cement-based composite material, including cementitious material, water and water reducer, the volume of cement accounts for 48.5%, the cement is P·I cement with a strength grade of 62.5, and the mineral admixture is silica fume, powder Coal ash and slag powder account for 17.6% by volume; the proportions of each component of the cementitious material are by the calculation method of embodiment 1, and get X c =0.734, X sf =0.107, X fa = 0.088 and X bs = 0.071. The water-to-cement ratio W / B=0.144, and the admixture is polycarboxylate superplasticizer solution, and the dosage is 2.3% of the mass of the gelling material.

[0113] The volume percentage of the main materials used in ultra-high performance cement-based composites is as follows:

[0114]

[0115] The dosage and quality ratio of each material of ...

Embodiment 3

[0123] Ultra-high performance cement-based channel profiles, of which:

[0124] H=400mm, B=200mm, D=30mm, t=30mm, R=20mm, R 1 = 3mm;

[0125] Ultra-high-performance cement-based composite material, including cementitious material, fine aggregate, steel fiber, water and water reducer, the volume of cement accounts for 26.5%, the cement is P·II cement with a strength grade of 52.5, and the mineral mixed The composite materials are silica fume, fly ash and mineral powder, accounting for 15.8%. Each component distribution fraction of gelling material is by the calculation mode of embodiment 1, gets X c =0.626, X sf =0.161, X fa = 0.102 and X bs = 0.111. The fine aggregate is natural sand with a fineness modulus of 1.4, and its volume is 0.811 of that of the cementitious material. The steel fibers are copper-plated steel fibers with a diameter of 0.2mm and a length of 13mm, and the volume content is 1.5%. The water-binder ratio W / B=0.162, the admixture uses polycarboxylate ...

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Abstract

The invention relates to an ultra-high performance cement-based groove type profile poured by an ultra-high performance cement-based composite material. The cement-based groove type profile meets H / B=0.8-3, D / B=0.1-0.5, t / H=0.05-0.5, R / B=0.05-0.5 and R1 / t=0.1-0.5. According to the ultra-high performance cement-based composite material, by optimizing the grain composition of multi-element cementing materials and the grain composition of aggregates and using a water reducing agent and other chemical additives, the compressive strength of the concrete reaches 70 MPa or above under 28 d standard curing on the premise that the concrete has the good fluidity; the ultra-high performance cement-based profile obtains the material component performance similar to that of profile steel through the fiber reinforcement and other technologies, the ultra-high performance cement-based profile is applied to the beam, column, pile and other structures of a prefabricated building, and therefore the building has the building speed similar to that of a steel structure, but has the corrosion and fire resistance higher than that of the steel structure profile.

Description

technical field [0001] The invention relates to an ultra-high-performance cement-based channel profile, which is an assembled cement-based channel profile, and more specifically, relates to an ultra-high-performance cement-based channel profile poured from ultra-high-performance cement-based composite materials profiles. Background technique [0002] Due to the low strength and high brittleness of ordinary concrete, the structural members made of it have large cross-sections and poor construction convenience. Therefore, light and convenient assembled profile members similar to steel structural profiles have not yet appeared. The emergence of ultra-high performance cement-based composite materials has made it possible to assemble cement-based profiles. Ultra-high-performance cement-based composite materials use fiber-reinforced reinforcement and other technologies to enable ultra-high-performance cement-based profiles to obtain material component properties similar to steel ...

Claims

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Application Information

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IPC IPC(8): E04C3/00E04C3/20E04C3/26E04C3/34E02D5/30E02D5/58E04B1/64C04B28/04
CPCE04C3/00C04B28/04E02D5/30E02D5/58E02D2300/002E02D2300/0051E04B1/642E04C3/20E04C3/26E04C3/34C04B18/146C04B18/08C04B2103/302C04B18/141C04B14/06C04B14/48C04B14/048C04B14/16
Inventor 施慧聪刘国平赵正王俊颜姚欣刘健
Owner 浙江宏日泰耐克新材料科技有限公司
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