CN109339342A - A kind of space lattice body enhancing concrete and its preparation process - Google Patents
A kind of space lattice body enhancing concrete and its preparation process Download PDFInfo
- Publication number
- CN109339342A CN109339342A CN201811396253.XA CN201811396253A CN109339342A CN 109339342 A CN109339342 A CN 109339342A CN 201811396253 A CN201811396253 A CN 201811396253A CN 109339342 A CN109339342 A CN 109339342A
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- Prior art keywords
- concrete
- lattice body
- space lattice
- space
- rib
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
Abstract
The invention discloses a kind of space lattice body enhancing concrete and its preparation process, space lattice body enhances concrete and is made of normal concrete matrix and the space lattice body being uniformly distributed therein.Space lattice body is a kind of with the spatial skeleton structure for stablizing geometric shape, is connected and composed by wire, fibre reinforced composites thin bar or high polymer fiber thin bar by node.Enhanced concrete of the invention uses the space lattice body with specific three dimensional structure and replaces the currently used steel fibre or other fibre types only with one-dimentional structure, and concrete can be made to possess higher fiber content, has superior mechanical property；And there is space lattice body good dispersion performance and natural packing to form the characteristic of spatial skeleton, it is easier to which the mix of concrete and casting ensure that good workability.
Description
Technical field
The present invention relates to a kind of fiber reinforcement type concrete material and its preparation processes, specifically a kind of to use space
The concrete material and its preparation process of grid body enhancing.
Background technique
Fibre reinforced concrete and referred to as fiber concrete, are often referred to using cement paste, mortar or concrete as base
Body makees cement-base composite material composed by reinforcing material with the discontinuous staple fiber or continuous fiber of one-dimensional linear.It is fine
Tieing up type mainly includes steel fibre, alkali-resistant glass fibre, carbon fiber, aramid fiber, polypropylene fibre or synthetic fibers of nylon etc..
Due to the presence of fiber, the development of inside concrete microcrack can be effectively limited, so as to significantly improve the pull resistance of concrete
Can be poor, ductility is poor the disadvantages of.
Common fiber is steel fibre, and it typically is the straight steel fibre of the length of circular cross-section, length is about 10~60 millimeters, directly
Diameter is about 0.2~0.6 millimeter, and draw ratio is about 30~100.In addition, to increase the interfacial adhesion of fiber and mortar or concrete,
The steel fibre of various abnormity can be selected: multiple section shape (rectangle, zigzag, falcate etc.), sectional dimension replace along length
Variation, length direction are non-linear (waveform and spiral shape etc.), end is amplified or with crotch etc..
Although fiber reinforcement coagulation has good mechanical property, mix difficulty is larger, workability is not so good as commonly
Concrete.Mainly since the easy aggregation of fiber is agglomerating, it is not easy to be dispersed in concrete, and the presence of fiber, so that
The mobility of mixture is deteriorated, so that its difficulty of construction be made to become larger.In addition, the volume of fiber contains in existing fiber concrete
Amount is generally 3% hereinafter, be difficult to higher fiber content.These unfavorable factors limit fiber concrete in Practical Project
In application.
Summary of the invention
The present invention proposes to overcome the shortcomings of that fibers form is single in current fiber concrete, workability is poor
A kind of enhanced concrete material and its preparation process substituting existing one-dimensional steel fibre using three-dimensional space grid body, Neng Goushi
Now better stress performance, higher fiber content and good workability.
The technical solution adopted by the present invention are as follows: a kind of space lattice body enhancing concrete, including concrete substrate and conduct
The space lattice body of reinforced phase, the space lattice body are dispersed in concrete substrate；
The space lattice body is to be made of metallic fiber, fibre reinforced composites thin bar or high molecular polymer thin bar
Have and stablize the spatial skeleton of geometric shape, spatial shape includes but is not limited to prism, pyramid and other spaces
Polyhedron；It include space networks that are a kind of or simultaneously including a variety of different shapes or size in the space lattice body enhancing concrete
Lattice body；
The rib of the space lattice body, section are one of circle, rectangle, zigzag or falcate；The section of rib
Shape and size alternately change along length；Rib is one of linear, fold-line-shaped, waveform and spiral shape in length direction；
Rib is stretched out to one or both ends, in end using partial enlargement or with crotch processing.
Preferably, the concrete substrate is normal concrete, lightweight aggregate concrete, regeneration concrete, reactive powder
Concrete, ultra-high performance concrete and seawater/marine sand concrete.It can be as needed by each rib of space lattice body using not
It is made with material.
The preparation process of above-mentioned space lattice body enhancing concrete:
First is that first space lattice body completes, it is poured after being then mixed evenly with concrete substrate other components
In in mold, i.e. completion space lattice body enhances concrete；
Second is that first space lattice body completes, then it is previously placed in the mold of concrete to be cast, makes its accumulation
Spatial skeleton is formed, self-compacting concrete is then poured into mold, is i.e. completion space lattice body enhances concrete.
In actual use, corresponding preparation method can be selected according to the concrete condition of engineering project.Using above-mentioned side
Space lattice body can be used for existing normal concrete, lightweight aggregate concrete, regeneration concrete, Reactive Powder Concrete by method
And ultra-high performance concrete etc., obtain corresponding space lattice body enhancing concrete.
Preferably, preferably guaranteeing maximum to guarantee that there is preferable fitness between space lattice body and aggregate
Aggregate diameter is not more than the long half of space lattice body rib.
Beneficial effects of the present invention: compared with existing fibre reinforced concrete, the present invention uses the sky with three-dimensional structure
Between grid body replace existing one-dimensional steel fibre to prepare enhanced concrete material, there is better mix performance and pouring property
Energy；Mutual effect of contraction between the space structure and adjacent ribs of space lattice body simultaneously, can make space lattice body and coagulation
There is better switching performance between soil；And space lattice body enhancing concrete can realize higher fiber content, to have
There is better mechanical property.
Detailed description of the invention
Fig. 1 is space lattice body example one of the invention；
Fig. 2 is space lattice body example two of the invention；
Fig. 3 is space lattice body example three of the invention；
Fig. 4 is space lattice body example four of the invention；
Fig. 5 is space lattice body example five of the invention；
Fig. 6 is the form example one of the rib of space lattice body of the invention；
Fig. 7 is the form example two of the rib of space lattice body of the invention；
Fig. 8 is the form example three of the rib of space lattice body of the invention；
Fig. 9 is the space lattice body that specific embodiments of the present invention one use；
Figure 10 is the space lattice body that specific embodiments of the present invention three use.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
A kind of space lattice body enhancing concrete, including concrete substrate and as the space lattice body of reinforced phase；It is described
Space lattice body be made of metallic fiber, fibre reinforced composites thin bar or high molecular polymer thin bar have stablize it is several
The spatial skeleton of what form, spatial shape include that tri-prismoid, rib are lifted one's head (as shown in Figure 1), and cuboid, rib are lifted one's head (such as Fig. 2
It is shown), tetrahedron, rib are lifted one's head (as shown in Figure 3), and tetrahedron, rib are not lifted one's head (as shown in Figure 4), and cuboid, part rib are lifted one's head
(as shown in Figure 5), each rib are undaform (as shown in Figure 6), broken line type (as shown in Figure 7) and spiral in length direction
One of type (as shown in Figure 8).
Embodiment one
A kind of grid body enhancing concrete, the component material of use includes: steel fibre grid body, water, cement, sand, stone
Son, water-reducing agent.Wherein steel fibre grid body is cube configuration (see Fig. 9), a length of 25mm of rib, wherein one group of parallel rib is to two
Head is brought out, length of lifting one's head 10mm, and the end of rib is equipped with crotch, hook length 5mm, and the effect of crotch is mainly used for enhancing it
Anchoring property between concrete；Concrete mixing uses common tap water with water；Cement uses ordinary portland cement
42.5 grades of P.O；Sand uses river sand, fineness modulus 3.0；The stone that coarse aggregate uses is rubble, maximum particle diameter 10mm；
Water-reducing agent is retardation setting high efficiency poly carboxylic acid series water reducer.By mix calculation and adaptation test, each component material utilization amount is obtained
Mass ratio be water: cement: sand: stone: grid body: water-reducing agent=634:231:619:855:156:5.51, wherein grid body
Volume content be 2.0%.
Above-mentioned each component material is weighed spare by weight, then follows the steps below operation:
(1) cement, sand and grid body are mixed evenly；
(2) stone is added to be mixed evenly, obtains dry blend；
(3) dry blend is added in water and water-reducing agent simultaneously, and being stirred keeps it uniform, and it is mixed to obtain the enhancing of space lattice body
Solidifying soil mixture；
(4) it carries out space lattice body enhancing concrete mix to pour, is conserved, demoulded.
Embodiment two
The present embodiment is a kind of space lattice body enhancing seawater/marine sand concrete for coastal engineering construction, use
Component material includes: fibre-glass reinforced polyester based composites grid body (referred to as answering material grid body), seawater, sea sand, cement.
It wherein answers material grid body to be positive tetrahedral configuration (see Fig. 3), side length 60mm；Seawater and sea sand are that East Sea sea area is gathered materials on the spot.
By mix calculation and adaptation test, the mass ratio for obtaining each component material utilization amount is seawater: cement: sea sand: grid body
=694:247:1427:133, wherein the volume content of grid body is about 2.4%.
Preparation process are as follows:
(1) sea sand and space lattice body are mixed and stirred for uniformly, obtaining just mixing；
(2) it is uniform that cement mixing is added into first mixing, obtains secondary mixed material；
(3) seawater is added into secondary mixed material and stirs, obtains space lattice body enhancing concrete mix；
(4) it carries out space lattice body enhancing concrete mix to pour, is conserved, demoulded.
Embodiment three
The implementation case enhances concrete material using a kind of space lattice body with excellent shear behavior, makes without hoop
Concrete Beam Reinforced.The material of use includes: steel fibre grid body, reinforcing bar and self-compacting concrete.Wherein steel fibre grid body is
Football-shape (see Figure 10) is made of 90 steel fibres that length is 50mm, forms 12 regular pentagons and 20 regular hexagons；
Reinforcing bar indulges muscle as stress using HRB400, since the concrete configured with football-shape grid body has excellent ultimate shear capacity,
It is not required to separately match stirrup in the beam；Self-compacting concrete uses the commerical ready-mixed concrete of C40, and wherein maximum size of coarse aggregate is not more than
15mm。
Specific steps are as follows:
(1) stress is carried out according to design indulge muscle processing；
(2) rigging, in template surface brushing release agent；
(3) installation protective layer positioning accessory and stress indulge muscle；
(4) football type steel fibers grid body cloth is placed in mold, accumulates it uniformly full of mold；
(5) it pours self-compacting concrete and vibrates, conserves；
(6) it demoulds.
Maximum feature of the invention is the fiber for being currently used for concrete enhancing being extended to three-dimensional by one-dimensional, is formed and had
There is the space lattice body of three-dimensional structure, concrete is enhanced with it, the fiber content of concrete can be improved, obtain mechanical property
The excellent enhanced concrete material of energy；And space lattice body has good accumulation property and dispersibility, it is easier to coagulation
The mix of soil and casting have good workability.
Embodiments of the present invention are described in detail in conjunction with attached drawing above, but the present invention is not limited to described reality
Apply mode.For those of ordinary skill in the art, in the range of the principle of the present invention and technical idea, to these implementations
Mode carries out a variety of variations, modification, replacement and deformation and still falls in protection scope of the present invention.
Claims (4)
1. a kind of space lattice body enhances concrete, it is characterised in that: including concrete substrate and as the space networks of reinforced phase
Lattice body, the space lattice body are dispersed in concrete substrate；
The space lattice body is the tool being made of metallic fiber, fibre reinforced composites thin bar or high molecular polymer thin bar
There is the spatial skeleton of stable geometric shape, spatial shape includes but is not limited to prism, pyramid and other space multi-panels
Body；It include space lattice that is a kind of or simultaneously including a variety of different shapes or size in the space lattice body enhancing concrete
Body；
The rib of the space lattice body, section are one of circle, rectangle, zigzag or falcate；The cross sectional shape of rib
Alternately change with size along length；Rib is one of linear, fold-line-shaped, waveform and spiral shape in length direction；Rib to
One or both ends are stretched out, in end using partial enlargement or with crotch processing.
2. space dictyosome according to claim 1 enhances concrete, it is characterised in that: the concrete substrate is common mixed
Solidifying soil, lightweight aggregate concrete, regeneration concrete, Reactive Powder Concrete, ultra-high performance concrete, seawater coagulation soil or sea sand are mixed
One of solidifying soil.
3. the preparation process of space lattice body enhancing concrete according to claim 1 or 2, it is characterised in that:
First is that first space lattice body completes, mould is cast in after being then mixed evenly with concrete substrate other components
In tool, i.e. completion space lattice body enhances concrete；
Second is that first space lattice body completes, then it is previously placed in the mold of concrete to be cast, forms its accumulation
Then spatial skeleton is poured self-compacting concrete into mold, i.e. completion space lattice body enhances concrete.
4. the preparation method of space lattice body enhancing concrete according to claim 3, it is characterised in that: aggregate
Maximum aggregate diameter be not more than the long half of space lattice body rib.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396253.XA CN109339342A (en) | 2018-11-22 | 2018-11-22 | A kind of space lattice body enhancing concrete and its preparation process |
| PCT/CN2019/070615 WO2020103315A1 (en) | 2018-11-22 | 2019-01-07 | Spatial-grid reinforced concrete and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396253.XA CN109339342A (en) | 2018-11-22 | 2018-11-22 | A kind of space lattice body enhancing concrete and its preparation process |
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| Publication Number | Publication Date |
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| CN109339342A true CN109339342A (en) | 2019-02-15 |
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| CN201811396253.XA Pending CN109339342A (en) | 2018-11-22 | 2018-11-22 | A kind of space lattice body enhancing concrete and its preparation process |
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| WO (1) | WO2020103315A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172824A (en) * | 2007-10-16 | 2008-05-07 | 南京航空航天大学 | Three-dimensional orientation fibre-reinforced cement base composite material |
| CN104032898A (en) * | 2014-06-03 | 2014-09-10 | 南京工业大学 | Three-dimensional fiber gird bar reinforced concrete structural part |
| CN104563315A (en) * | 2015-01-08 | 2015-04-29 | 南京倍立达新材料系统工程股份有限公司 | Three-dimensional knitted hollow fabric reinforced foaming cement heat preserving plate and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050858U (en) * | 1989-02-28 | 1990-01-10 | 黄镇贤 | Crystal lattice type network reinforcing bars structure of concrete members |
| WO2005044483A1 (en) * | 2003-11-07 | 2005-05-19 | Ki Ju Kang | Three-dimensional cellular light structures directly woven by continuous wires and the manufacturing method of the same |
| KR101155267B1 (en) * | 2009-08-27 | 2012-06-18 | 전남대학교산학협력단 | Manufacturing method of three dimensional lattice truss structures composed of helical wires |
| CN103570315B (en) * | 2013-11-01 | 2016-08-17 | 中国矿业大学(北京) | Three-dimensional steel fiber reinforced flame-resistant concrete material for mines |
| CN203867073U (en) * | 2014-06-03 | 2014-10-08 | 江苏苏博特新材料股份有限公司 | Three-dimensional steel fiber |
| CN106592853B (en) * | 2016-11-07 | 2019-11-22 | 北京建筑大学 | Concrete Sandwich Panel and preparation method thereof |
-
2018
- 2018-11-22 CN CN201811396253.XA patent/CN109339342A/en active Pending
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2019
- 2019-01-07 WO PCT/CN2019/070615 patent/WO2020103315A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172824A (en) * | 2007-10-16 | 2008-05-07 | 南京航空航天大学 | Three-dimensional orientation fibre-reinforced cement base composite material |
| CN104032898A (en) * | 2014-06-03 | 2014-09-10 | 南京工业大学 | Three-dimensional fiber gird bar reinforced concrete structural part |
| CN104563315A (en) * | 2015-01-08 | 2015-04-29 | 南京倍立达新材料系统工程股份有限公司 | Three-dimensional knitted hollow fabric reinforced foaming cement heat preserving plate and preparation method thereof |
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| WO2020103315A1 (en) | 2020-05-28 |
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Application publication date: 20190215 |
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