CN103244755B - Production method for fiber woven mesh reinforced cement-based composite material prefabricated pipe - Google Patents
Production method for fiber woven mesh reinforced cement-based composite material prefabricated pipe Download PDFInfo
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- CN103244755B CN103244755B CN201310177765.8A CN201310177765A CN103244755B CN 103244755 B CN103244755 B CN 103244755B CN 201310177765 A CN201310177765 A CN 201310177765A CN 103244755 B CN103244755 B CN 103244755B
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Abstract
The invention discloses a fiber woven mesh reinforced cement-based composite material prefabricated pipe and a production method thereof. Fiber woven meshes are arranged in the middle of the prefabricated pipe, and the number of layers of the fiber woven meshes can be adjusted according to practical requirements. The fiber woven mesh reinforced cement-based composite material prefabricated pipe can be widely applied to industrial engineering, mineral engineering, sea port engineering, municipal engineering, agricultural hydraulic engineering and the like. The prefabricated pipe is made of non-metal fiber woven mesh reinforced cement-based composite materials and has the advantages of being simple to produce, convenient to use, high in durability and safety reliability, long in service life, capable of effectively controlling and preventing cracking and the like.
Description
Technical field
The invention belongs to a kind of prefabricated pipe, specifically a kind of fiber knitted net refinforced cement based composites prefabricated pipe being mainly used in the engineerings such as IE Industrial Engineering, Mineral Engineering, sea, port engineering, municipal engineering and farmland water conservancy works, have and make simply, easy to use, anticracking is split in effective control, the features such as durability is high, and safety reliability is high, long service life.The invention still further relates to the making method of prefabricated pipe.
Background technique
Concrete pipe compares with steel pipe, can saving steel in a large number, increases the service life, and little investment of founding the factory, lay easy for installation, be widely used in factory, mine, oil field, harbour, urban construction and farmland water conservancy works.But the problem of Cracking of concrete prefabricated pipe and endurance issues are more scabrous problems in its using process all the time.
Summary of the invention
The present invention's technical problem first to be solved is to provide a kind of fiber knitted net refinforced cement based composites prefabricated pipe and preparation method thereof, to overcome the defect of conventional concrete prefabricated pipe, improve prefabricated pipe durability and control prefabricated pipe cracking, the present invention is by the following technical solutions: described prefabricated pipe selects non metal fiber woven net refinforced cement based composites to make, non metal fiber woven net is positioned at the inside of prefabricated pipe, and in described prefabricated pipe, the number of plies of non metal fiber woven net is 1 layer or multilayer.
The cement-base composite material that described non metal fiber woven net strengthens is made up of non-metallic fiber net and cement-base matrix, described non metal fiber woven net comprises: Carbon Fibre Textile, aramid fibre mesh grid, alkali-resistant glass fibre mesh grid, polyvinyl alcohol fiber mesh grid, polyvinyl fiber mesh grid or mixed fibre mesh grid, has the two or more fiber being selected from above fiber in mixed fibre; The mortar constituent of cement-base matrix is except mixing water, also comprise: in Portland cement, alumina cement, sulpho-aluminous cement one or more, active mineral fine mineral admixture, water reducing agent, sand, described active mineral fine mineral admixture is the material with pozzolanic activity.
The material of pozzolanic activity comprises one or more in pulverized fuel ash, silica flour, granulated blast-furnace slag.
In addition, the mortar preferred mass proportioning of the cement-base matrix of described cement-base composite material is: the mass ratio of each component is cement: water: pulverized fuel ash: silicon ash: water reducing agent: coarse sand: fine sand=1:(0.45 ~ 0.55): (0.3 ~ 0.36): (0.05 ~ 0.1): (0.006 ~ 0.01): (0.9 ~ 1.0): (1.8 ~ 2.0).The particle size range of its medium coarse sand is at 0.6 ~ 1.2mm; Fine sand particle size range is 0 ~ 0.6mm.
When described non metal fiber woven net has multilayer, between adjacent layer, leave the spacing being not less than 3mm.
Described non metal fiber woven net is by pre-stretch-draw and its surface smear epoxy resin.
Another technical problem to be solved of the present invention is to provide a kind of making method of above-mentioned fiber knitted net refinforced cement based composites prefabricated pipe.For this reason, the present invention is by the following technical solutions:
Tubulose non metal fiber woven net is arranged on and prefabricated pipe mould forms template builds device, and apply tension stress in tubulose non metal fiber woven net both sides to ensure that in casting process, mesh grid shaped position does not change; When the external mold of prefabricated pipe mould is opened, from upper opening, cement-base composite material is poured into template and build device, suitably vibrate and the external mold of prefabricated pipe mould is closed up; The shaping rear form removal of prefabricated pipe, prunes the fiber knitted net that both sides are unnecessary, becomes fiber knitted net refinforced cement based composites prefabricated pipe after maintenance.
Described tubulose non metal fiber woven net working process is as follows: the fiber knitted net of required size is carried out two directions tension, and uses fixture to fix the fiber knitted net after stretch-draw; Epoxy resin is smeared, form removal after epoxy resin cure at fixing fiber woven net surface; Gained fiber knitted net bent to the circular tube shaped of required size and use epoxy bond in lap-joint, after epoxy resin cure, namely completing the making of tubulose non metal fiber woven net.
Described prefabricated pipe mould is made up of external mold, prefabricated pipe mould inside parts and prefabricated pipe mold exterior parts; Described external mold forms by three arc surfaces are circumferentially hinged, wherein the first arc surface and the second arc surface hinged, the second arc surface and three-arc face hinged, for circular tube shaped after closing up, its internal diameter is consistent with prefabricated pipe external diameter, and its length is consistent with made prefabricated pipe length; Described prefabricated pipe mould inside parts are made up of smaller portions cylinder and the coaxial major part cylinder being in smaller portions cylinder two ends, the external diameter of smaller portions cylinder is consistent with prefabricated pipe internal diameter, and the external diameter of major part cylinder is consistent with the internal diameter of pipe-type woven net; Described prefabricated pipe mold exterior parts are in the two ends of described inner member, and the round hole internal diameter formed after described prefabricated pipe mold exterior parts splicing is consistent with tubular fiber mesh grid external diameter.
What described template built that device carries out prefabricated pipe under horizontal positioned builds making.
Described prefabricated pipe can need the size by adjusting mould to make according to actual size size.
Problem of Cracking and the endurance issues of conventional concrete prefabricated pipe can be improved and solve to prefabricated pipe of the present invention.Due to non metal fiber woven net self good corrosion resistance, the prefabricated pipe be made up of non metal fiber woven net refinforced cement based composites has again the feature such as high stretching ductility and Crack Control ability, can effectively reduce the generation of harmful cracks and suppress crack progressing, its chloride-penetration resistance and water resistant penetrability be also much better than normal concrete.Adopt prefabricated pipe of the present invention to have simple for production, easy to use, durability is high, the feature that control critical eigenvalue is carried out.
Accompanying drawing explanation
Below for the mark among accompanying drawing illustrates: 1 is fiber knitted net refinforced cement based composites prefabricated pipe, 2 is tubulose non metal fiber woven nets, 3 is fixtures of fixing stretch-draw fiber knitted net, 4 is the external molds making prefabricated pipe, 5 is inner members of prefabricated pipe mould, 6 is external components of prefabricated pipe mould, and 7 is the cement-base composite materials of building, and 8 is the arrows representing stretch-draw direction.
Fig. 1 (a) is prefabricated pipe structural representation of the present invention.
Fig. 1 (b) is the front view of prefabricated pipe of the present invention.
Fig. 1 (c) is the internal structure schematic diagram of prefabricated pipe of the present invention.
Fig. 2 (a) is schematic diagram when being fixed by fixture after mesh grid stretch-draw of the present invention.
Fig. 2 (b) is side view when being fixed by fixture after mesh grid stretch-draw of the present invention.
Fig. 2 (c) is plan view when being fixed by fixture after mesh grid stretch-draw of the present invention.
Fig. 3 (a) is that prefabricated pipe of the present invention builds device schematic diagram.
Fig. 3 (b) is that prefabricated pipe of the present invention builds device front view.
Fig. 3 (c) is that prefabricated pipe of the present invention builds device side view.
Fig. 3 (d) is that prefabricated pipe of the present invention builds device plan view.
Fig. 3 (e) is the A-A sectional view of Fig. 3 (c).
Fig. 3 (f) is the B-B sectional view of Fig. 3 (d).
Fig. 3 (g) is that prefabricated pipe of the present invention builds bulking block fractionation schematic diagram.
Fig. 4 (a) is the external mold schematic diagram of prefabricated pipe of the present invention.
Fig. 4 (b) is the external mold front view of prefabricated pipe of the present invention.
Fig. 5 is the working process schematic diagram of pipe-type woven net.
Fig. 6 is prefabricated pipe working process schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and a kind of fiber knitted net refinforced cement based composites prefabricated pipe and preparation method thereof embodiment work, the invention will be further described, and this embodiment is to explanation of the present invention, instead of makes any restriction to the present invention.
A kind of fiber knitted net refinforced cement based composites prefabricated pipe of the present embodiment is as shown in Fig. 1 (a) (b) (c) (d), described prefabricated pipe selects non metal fiber woven net refinforced cement based composites to make, non metal fiber woven net is positioned at the inside of prefabricated pipe, and in described prefabricated pipe, the number of plies of non metal fiber woven net is 1 layer or multilayer.
The cement-base composite material that described non metal fiber woven net strengthens is made up of non-metallic fiber net and cement-base matrix, described non metal fiber woven net comprises: Carbon Fibre Textile, aramid fibre mesh grid, alkali-resistant glass fibre mesh grid, polyvinyl alcohol fiber mesh grid, polyvinyl fiber mesh grid or mixed fibre mesh grid, has the two or more fiber being selected from above fiber in mixed fibre; The mortar constituent of cement-base matrix is except mixing water, also comprise: in Portland cement, alumina cement, sulpho-aluminous cement one or more, active mineral fine mineral admixture, water reducing agent, sand, described active mineral fine mineral admixture is the material with pozzolanic activity.
The material of pozzolanic activity comprises one or more in pulverized fuel ash, silica flour, granulated blast-furnace slag.
In addition, the preferred mass proportioning of the mortar of described cement-base composite material cement-base matrix is: the mass ratio of each component is cement: water: pulverized fuel ash: silicon ash: water reducing agent: coarse sand: fine sand=1:(0.45 ~ 0.55): (0.3 ~ 0.36): (0.05 ~ 0.1): (0.006 ~ 0.01): (0.9 ~ 1.0): (1.8 ~ 2.0).The particle size range of its medium coarse sand is at 0.6 ~ 1.2mm; Fine sand particle size range is 0 ~ 0.6mm.
First the making of tubulose non metal fiber woven net is carried out, as shown in Figure 5.The non metal fiber woven net of required size is carried out two directions tension, described two-way be orthogonal both direction, and by after stretch-draw mesh grid use fixture 3 fix, see Fig. 2 (a) (b) (c); At fixing mesh grid surface smear epoxy resin, form removal after epoxy resin cure; Gained mesh grid bent to the circular tube shaped of required size and use epoxy bond in lap-joint, after epoxy resin cure, namely completing the making of pipe-type woven net.
Tubulose non metal fiber woven net is arranged on and prefabricated pipe mould forms template builds device,
Prefabricated pipe mould used is made up of external mold 4, prefabricated pipe mould inside parts 5 and prefabricated pipe mold exterior parts 6.Fig. 3 (a) (b) (c) (d) (e) (f) (g) is the structural representation of prefabricated pipe mould.
Described external mold 4 forms by three arc surfaces are circumferentially hinged for two hinge mould (see Fig. 4 (a) (b)), it is circular tube shaped after closing up, the first arc surface wherein and the second arc surface hinged, second arc surface and three-arc face hinged, its internal diameter is consistent with prefabricated pipe external diameter, and its length is consistent with made prefabricated pipe length.Angle X shown in Fig. 4 (b) determines the radian of three arc surfaces, can adjust according to actual needs, and generally X should be less than 180 °, is singly cut with scissors mould when X is 0.Described prefabricated pipe mould inside parts 5 are made up of smaller portions cylinder and the coaxial major part cylinder being in smaller portions cylinder two ends, the external diameter of smaller portions cylinder is consistent with prefabricated pipe internal diameter, and the external diameter of major part cylinder is consistent with the internal diameter of pipe-type woven net.Described prefabricated pipe mold exterior parts 6 are in the two ends of described inner member 5, and the round hole internal diameter that prefabricated pipe mold exterior parts 6 splice rear formation is consistent with tubular fiber mesh grid external diameter.For the position of fixing tubulose mesh grid after inner member 5 and external component 6 splice.
The working process of fiber knitted net refinforced cement based composites prefabricated pipe as shown in Figure 6, tubular fiber mesh grid 2 is arranged on prefabricated pipe mould, locate with inner member 5 and external component 6 and fix, form template and build device, and apply stretching force (in figure shown in arrow) in pipe-type woven net both sides to ensure that in casting process, mesh grid shaped position does not change;
Described in horizontal positioned, template builds device, and under external mold 4 open mode, the cement-base matrix mortar of cement-base composite material 7 is added template and builds device by portion's opening from it, suitably vibrates and is closed up by external mold 4; The shaping rear form removal of prefabricated pipe, prunes the fiber knitted net that both sides are unnecessary, and maintenance becomes fiber knitted net refinforced cement based composites prefabricated pipe for 28 days afterwards, can normally use.
Obtained a kind of fiber knitted net refinforced cement based composites prefabricated pipe is as shown in Fig. 1 (a) (b) (c).
Described prefabricated pipe can need the size by adjusting mould to make according to actual size size.Described fiber knitted net can use multi-layer fiber mesh grid according to user demand, and the fiber knitted net making method of every layer is identical, leaves the spacing being not less than 3mm between adjacent layer.Now, the external diameter of described smaller portions cylinder is consistent with prefabricated pipe internal diameter, the external diameter of major part cylinder is consistent with the internal diameter of innermost layer pipe-type woven net, the round hole internal diameter that prefabricated pipe mold exterior parts 6 splice rear formation is consistent with outermost tubular fiber mesh grid external diameter, described prefabricated pipe mould also can increase positioning ring, positioning ring is between major part cylinder and described round hole wall, for locating adjacent fibroreticulate in a tubular form spacing at two ends.
It is simple that making method provided by the present invention has making, easy to use, the feature that raising prefabricated pipe durability and control critical eigenvalue are carried out, and easily meets the application of a large amount of engineering.
Claims (3)
1. the making method of a fiber knitted net refinforced cement based composites prefabricated pipe, it is characterized in that: tubulose non metal fiber woven net is arranged on and prefabricated pipe mould forms template builds device, and apply tension stress in tubulose non metal fiber woven net both sides to ensure that in casting process, mesh grid shaped position does not change; When the external mold of prefabricated pipe mould is opened, from upper opening, cement-base composite material is poured into template and build device, suitably vibrate and the external mold of prefabricated pipe mould is closed up; The shaping rear form removal of prefabricated pipe, prunes the fiber knitted net that both sides are unnecessary, becomes fiber knitted net refinforced cement based composites prefabricated pipe after maintenance;
Described prefabricated pipe mould is made up of external mold (4), prefabricated pipe mould inside parts (5) and prefabricated pipe mold exterior parts (6); Described external mold (4) forms by three arc surfaces are circumferentially hinged, wherein the first arc surface and the second arc surface hinged, the second arc surface and three-arc face hinged, for circular tube shaped after closing up, its internal diameter is consistent with prefabricated pipe external diameter, and its length is consistent with made prefabricated pipe length; Described prefabricated pipe mould inside parts (5) are made up of smaller portions cylinder and the coaxial major part cylinder being in smaller portions cylinder two ends, the external diameter of smaller portions cylinder is consistent with prefabricated pipe internal diameter, and the external diameter of major part cylinder is consistent with the internal diameter of pipe-type woven net; Described prefabricated pipe mold exterior parts (6) are in the two ends of described inner member (5), and the round hole internal diameter formed after described prefabricated pipe mold exterior parts (6) splicing is consistent with tubular fiber mesh grid external diameter.
2. making method according to claim 1, is characterized in that: described tubulose non metal fiber woven net working process is as follows: the fiber knitted net of required size is carried out two directions tension, and uses fixture (3) to fix the fiber knitted net after stretch-draw; Epoxy resin is smeared, form removal after epoxy resin cure at fixing fiber woven net surface; Gained fiber knitted net bent to the circular tube shaped of required size and use epoxy bond in lap-joint, after epoxy resin cure, namely completing the making of tubulose non metal fiber woven net.
3. making method according to claim 1, is characterized in that: what described template built that device carries out prefabricated pipe under horizontal positioned builds making.
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| CN201310177765.8A CN103244755B (en) | 2013-05-14 | 2013-05-14 | Production method for fiber woven mesh reinforced cement-based composite material prefabricated pipe |
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| CN201310177765.8A CN103244755B (en) | 2013-05-14 | 2013-05-14 | Production method for fiber woven mesh reinforced cement-based composite material prefabricated pipe |
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| CN103244755B true CN103244755B (en) | 2015-06-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106885060A (en) * | 2017-03-07 | 2017-06-23 | 宁波和谐信息科技有限公司 | A kind of cement-base composite material pipe based on textile technology |
| CN109025460A (en) * | 2018-09-18 | 2018-12-18 | 福建瑞森水泥制品发展有限公司 | A kind of assembled light thin-wall composite pole and preparation method thereof and connection type |
| CN109333754B (en) * | 2018-10-19 | 2021-02-19 | 德阳科吉高新材料有限责任公司 | Manufacturing process of high-speed rail plate containing organic reinforced fibers |
| CN109914845A (en) * | 2019-03-14 | 2019-06-21 | 盐城工学院 | A kind of thin cloth of fibre reinforced cement base and filling wall composite construction and its construction technology |
| CN110080112A (en) * | 2019-04-28 | 2019-08-02 | 中交一公局第四工程有限公司 | A kind of sector three of rapid-assembling/disassembling opens revolving type cylinder pier template |
| CN113119297B (en) * | 2021-04-22 | 2022-06-03 | 哈尔滨工业大学（深圳） | Preparation mold and preparation method of fiber reinforced cement-based composite material prefabricated pipe |
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