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Concrete material for high-performance structural engineering and preparation method and application thereof

A technology for structural engineering and concrete, which is applied in the field of concrete materials for structural engineering and its preparation, which can solve the problems of poor pouring and tamping quality, difficult construction, unmatched systems, etc., and achieve the effect of convenient construction and good fluidity

Inactive Publication Date: 2016-12-14
SHANGHAI MEICHUANG ARCHITECTURAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the existing structural engineering, the construction difficulties caused by the use of traditional concrete and cement-based grouting materials, poor pouring and tamping quality, and unmatched systems and other defects

Method used

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  • Concrete material for high-performance structural engineering and preparation method and application thereof
  • Concrete material for high-performance structural engineering and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A concrete material for high-performance structural engineering reinforcement with a strength grade of C30, the specific preparation method of which is as follows:

[0029] First select raw materials according to Table 2: (Unit: Kg / M 3 )

[0030] cement

UEA

fine aggregate

Coarse aggregate

Sodium naphthalenesulfonate

fiber

water

437

44

976

728

2.88

0.8

211

[0031] Table 2

[0032] Among them, the cement is 42.5 grade ordinary Portland cement, the UEA is the UEA of Shanghai White Cement Factory, the fine aggregate modulus is 2.5mm, the coarse aggregate particle size is 5-16mm, and the sodium naphthalene sulfonate is Zhejiang Wulong naphthalene series high-efficiency reducer. Aqueous, the fibers are Grace 6mm polypropylene chopped fibers.

[0033] Then use mechanical stirring for more than 3 minutes, and use waterproof and moisture-proof packaging. When in use, add water and mechanically stir for more than ...

Embodiment 2

[0035] A concrete material for high-performance structural engineering reinforcement with a strength grade of C60, the specific preparation method of which is as follows:

[0036] First select raw materials according to Table 3: (Unit: Kg / M 3 )

[0037] cement

UEA

fine aggregate

Coarse aggregate

polycarboxylate

fiber

water

latex powder

610

61

778

763

2.018

0.6

206

1.4

[0038] table 3

[0039] Among them, the cement is 42.5 grade ordinary Portland cement, the UEA is the UEA of Shanghai White Cement Factory, the fine aggregate modulus is 2.5mm, the coarse aggregate particle size is 5-16mm, and the polycarboxylate is Suzhou Fuke Polycarboxylate High Efficiency Water reducing agent, fiber is Grace 6mm polypropylene chopped fiber.

[0040] Then use mechanical stirring for more than 3 minutes, and use waterproof and moisture-proof packaging. When in use, add water and mechanically stir for more than 5 minutes....

Embodiment 3

[0042] A concrete material for high-performance structural engineering reinforcement with a strength grade of C80, the specific preparation method of which is as follows:

[0043] First select raw materials according to Table 4: (Unit: Kg / M 3 )

[0044] cement

Silica fume

fine aggregate

Coarse aggregate

polycarboxylate

fiber

water

latex powder

624

61

685

913

3.283

0.6

167

2.8

[0045] Table 4

[0046] Among them, the cement is 52.5 grade ordinary Portland cement, the silica fume is Erken silica fume from Sweden, the fine aggregate modulus is 2.8mm, the coarse aggregate particle size is 5-10mm, and the polycarboxylate is Suzhou Fuke polycarboxylate. Acid high-efficiency water reducer, the fiber is Grace 3mm polypropylene chopped fiber.

[0047] Then use mechanical stirring for more than 3 minutes, and use waterproof and moisture-proof packaging. When in use, add water and mechanically stir for more than 5 mi...

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Abstract

The invention provides a concrete material for high-performance structural engineering and a preparation method and application thereof. The concrete material is prepared from cement with concentration of 400-900 Kg / m<3>, coarse aggregate with concentration of 300-950 Kg / m<3>, fine aggregate with concentration of 500-1050 Kg / m<3>, shrinkage-compensating admixture with concentration of 0-100 Kg / m<3>, polymeric additives with concentration of 1-15 Kg / m<3>, silica fume with concentration of 0-65 Kg / m<3> and fiber with concentration of 0.5-2.5 Kg / m<3>, wherein the grain size of the coarse aggregate is 5-16 mm, the grain size of the fine aggregate is smaller than 5 mm, the water contents of all the raw materials are smaller than 1.5%, and the water addition amount accounts for 7-11% of the amount of the dry materials in the use process. The preparation method of the concrete material includes the following steps of selecting the raw materials according to the compositions and consumption, conducting mechanical stirring for 3 min or longer, and conducting waterproof and damp-roof packaging. The concrete material is suitable for concrete pouring of reinforced concrete beam-column joints and reinforced steel bar dense areas in structural engineering, concrete cast-in-place partial pouring and tamping of prefabricated structures, reconstruction and expansion in decoration process, pouring of other engineering structures and the like.

Description

【Technical field】 [0001] The invention relates to a concrete material and its preparation method and application, in particular to a concrete material for structural engineering and its preparation method and application. [Background of the invention] [0002] With the continuous development of my country's economic level, the level of seismic performance of building structures has gradually improved, and the amount of steel bars in cast-in-place reinforced concrete structures has also increased compared to before. At present, in many practical projects, the structural design of beam-column joint reinforcement is very dense. However, the ordinary concrete provided by the batching plant has poor fluidity, which leads to the inability to vibrate and compact the dense joint reinforcement when pouring concrete, which greatly affects the seismic mechanical properties of the structure. [0003] At the same time, local governments are vigorously promoting the cast-in-place part of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04G21/02
CPCC04B28/04C04B2201/20C04B2201/50E04G21/02
Inventor 徐凯
Owner SHANGHAI MEICHUANG ARCHITECTURAL MATERIALS
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