CN102720158B - Unidirectional keel embedded assembled anti-cracking impermeable permanent formwork - Google Patents
Unidirectional keel embedded assembled anti-cracking impermeable permanent formwork Download PDFInfo
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- CN102720158B CN102720158B CN201210162368.9A CN201210162368A CN102720158B CN 102720158 B CN102720158 B CN 102720158B CN 201210162368 A CN201210162368 A CN 201210162368A CN 102720158 B CN102720158 B CN 102720158B
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Abstract
The invention provides a unidirectional keel embedded assembled anti-cracking impermeable permanent formwork. The formwork consists of panels and a connecting piece, wherein the transversal surfaces of the panels and the connecting piece are of concave shapes; the connecting piece is fastened with left and right adjacent panels; and the panels and the connecting piece are manufactured by the following materials: ultrahigh toughness cement-base composite materials (UHTCC), nonmetallic fiber mesh grid and short fiber combined reinforced cement-base composite materials, and steel mesh and short fiber combined reinforced cement-base composite materials. After serving as the formwork at the casting stage, the unidirectional keel embedded assembled anti-cracking impermeable permanent formwork is not removed, but serves as a structural protective plate and an outer protective layer and becomes a permanent formwork, and the engineering cost and the construction strength are reduced. The formwork has the characteristics of high tensile ductility and crack control capacity, high damage tolerance, high energy absorption capacity and the like, and the chloride penetration resistance and water penetration resistance of the formwork are higher than those of the common concrete. By adopting the structure of the panels and the connecting piece, the formwork has the characteristics of convenience in manufacturing and use and the capacity of controlling crack developing.
Description
Technical field
Patent of the present invention belongs to a kind of construction formwork; specifically a kind of high-durability permanent formwork being mainly used in hydro-structure, sea, port structure, bridges and culverts tunnel etc.; use as template in the stage of building, build shaping rear double protected apron and the external protection doing structure.
Background technology
At present, in domestic construction field, hydro-structure, the building structure such as structure, bridges and culverts tunnel of sea, port use the template such as wooden form, steel form usually, there is the unfavorable factors such as consumption is large, dismounting is inconvenient, have enough to meet the need costly, utilization rate is low.In structure under conventional situation, ordinary concrete surface is naturally exposed, and durability is lower.Meanwhile, carrying out using cracking resistance as controlled condition designing is the key character that hydro-structure etc. is different from other types building structure, the normal work that ordinary concrete problem easy to crack not only can affect hydro-structure etc. also can affect its durability and application life, the serious safe operation that even can affect structure.Some is more scabrous problem in hydro-structure, the port sea construction such as structure, bridges and culverts tunnel and use procedure all the time above.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of unidirectional keel imbedded and fastened can assembled anti-cracking and seepage control permanent formwork, to improve the unfavorable factor that conventional template is brought, improve structure durability simultaneously, reduce structure later maintenance cost and the application life of final extending structure, for this reason, the present invention is by the following technical solutions:
It forms template by panel and connector, the cross section of described panel and described connector is matrix, two pieces of panels that described connector is adjacent with left and right fasten, and described panel and connector select following different materials to make: superhigh tenacity cement-base composite material UHTCC, non metal fiber woven net and flock combined reinforced concrete base composite material, gauze wire cloth and flock combined reinforced concrete base composite material.
Superhigh tenacity cement-base composite material UHTCC used, its stretching strain ability reaches more than 1%, crack width corresponding during ultimate tensile strength is less than 100 μm, test condition is of a size of the test specimen of 350mm × 50mm × 15mm for building, maintenance to 28 carries out uniaxial tensile test after day length of time, each components by weight of the mortar matrix of UHTCC used is cement: water: fine aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin: water reducing agent=1:(0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4): (0.01 ~ 0.025), the maximum particle diameter of fine aggregate is not more than 0.5 mm, be zero during the varying in weight of fine aggregate, flyash, silicon ash, granulated blast-furnace slag, metakaolin.
In UHTCC, go back admixture short fiber, short fiber kind is one or more in vinal, polyethylene fibre, aromatic polyamide fibre, and volume volume is 1 ~ 3%.
The described non metal fiber woven net flock combined reinforced concrete base composite material that making template uses is made up of non metal fiber woven net, nonmetal short fiber and cement based matrix, and described non metal fiber woven net comprises: Carbon Fibre Textile, aramid fiber mesh grid, alkali-resistant glass fibre mesh grid, vinal mesh grid, polyethylene fibre mesh grid or the assorted fibre mesh grid of being made up of above fiber shuffling; Nonmetal short fiber comprises: one or more in vinal, polyethylene fibre, carbon fiber, aramid fiber; The constituent of cement based matrix is except mixing water, also comprise: in portland cement, high alumina cement, sulphate aluminium cement one or more, active mineral fine mineral admixture, water reducing agent, meticulous sand, described active mineral fine mineral admixture is the material with pozzolanic activity.
The material of pozzolanic activity comprises flyash, silicon divides, one or more in granulated blast-furnace slag.
The maximum particle diameter of meticulous sand is less than 0.6mm.
The cross section of described panel is wide fluted body, and its inner surface is distributed with some grooves; The cross section of described connector is narrow fluted body, and its outer surface is distributed with some grooves; The adjacent wall thickness summation of two pieces of panels that the recess width of described connector is adjacent with left and right is suitable, and can be interlocked with the adjacent wall of described two pieces of adjacent panels, connects before and after the connector of same row.The present invention can need to adjust according to using the template that the quantity of panel and size are combined to form required size, and meanwhile, connector can ensure the connection between panel and panel, thus forms complete template system.Cementing agent is also used to bond for the binding face between panel and panel and the connection between connector and panel.
Described template is connected and composed by polylith panel and connector, and the transverse joint between described panel staggers mutually, and the seam between connector and the transverse joint between panel stagger mutually.
Owing to adopting technical scheme of the present invention; the present invention used as template in the stage of building; build shaping after, do not need to remove, and double protected apron and the external protection doing structure; become permanent formwork; itself cost is low and also eliminate demolition cost and turnover expense, reduces engineering cost, can improve and solve the problems such as dismounting in hydro-structure, the extra large template construction such as structure and bridges and culverts tunnel in port and utilization rate; reduce construction intensity, greatly can shorten the engineering time.Meanwhile, because this template is made up of superhigh tenacity cement-base composite material, non metal fiber woven net and flock combined reinforced concrete base composite material or gauze wire cloth and flock combined reinforced concrete base composite material, the feature such as there is high stretching ductility and Crack Control ability, damage tolerance is high, energy absorption capability is strong, effectively can reduce the harmful cracks of body structure surface generation and suppress crack progressing, its chloride-penetration resistance and water resistant permeance property are much better than ordinary concrete, can significantly improve durability and the application life of concrete structure.Meanwhile, adopt the structure of panel of the present invention and connector, template is by panel and the assembled assembling of connector, and have and make simply, assemble easy to use, durability is high, the feature that control critical eigenvalue is carried out.
Accompanying drawing explanation
Fig. 1 is the permanent formwork structural representation that panel of the present invention and connector are connected into.
Fig. 2 (a) is the structural representation of panel of the present invention.
Fig. 2 (b) is the top view of the panel of patent of the present invention.
Fig. 2 (c) is the A-A sectional view of Fig. 2 (b).
Fig. 3 (a) is the structural representation of the connector of patent of the present invention.
Fig. 3 (b) is the top view of the connector of patent of the present invention.
Fig. 3 (c) is the B-B sectional view of Fig. 3 (b).
Fig. 4 is assembling schematic diagram of the present invention.
Detailed description of the invention
Can assembled anti-cracking and seepage control permanent formwork detailed description of the invention be described further unidirectional keel imbedded and fastened provided by the present invention below in conjunction with accompanying drawing, this embodiment is to explanation of the present invention, instead of makes any restriction to the present invention.
The one unidirectional keel imbedded and fastened of the present embodiment can comprise panel 1 six pieces by assembled anti-cracking and seepage control permanent formwork, connector 2 three pieces.As shown in Figure 4, the implementation method in above-mentioned situation is below introduced.
1. use superhigh tenacity cement-base composite material to make panel and connector, comprise panel 1 six pieces, connector 2 three pieces.Make the superhigh tenacity cement-base composite material UHTCC material that template uses, its stretching strain ability reaches more than 1%, under ultimate tensile strength, crack width is less than 100 μm, and has the feature of excellent anti-carbonization, freeze thawing resistance, anti-permeability performance and high impact toughness.Each components by weight of the mortar matrix of UHTCC used is cement: water: fine aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin: water reducing agent=1:(0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4): (0.01 ~ 0.025); the short fiber kind of admixture is one or more in vinal, polyethylene fibre, aromatic polyamide fibre; volume volume is 1 ~ 3%, and the maximum particle diameter of fine aggregate is not more than 0.5 mm.
2. described in, the cross section of panel 1 is wide fluted body, and its inner surface is distributed with some grooves 11; The cross section of described connector 2 is narrow fluted body, and its outer surface is distributed with some grooves 21; The adjacent wall 10 thickness summation of two pieces of panels that the recess width of described connector is adjacent with left and right is suitable, and can be interlocked with the adjacent wall 10 of described two pieces of adjacent panels.
All panels are placed in same plane, and during assembling, panel should interlaced arrangement, thus makes panel transverse joint not on the same line, uses cementing agent to bond the cross section of each group of panel, as shown in Figure 4.
3. use connector 2 to connect the bonding place, middle part of panel, and use cementing agent to bond each face, as shown in Figure 4.The seam of connector 2 should be suitable interleaved with the transverse joint of panel, thus make it not on the same line.
During construction, can assemble according to the needs of real size, panel and connector alternative splicing should be adopted to complete the overall package of template, and assembling mode is varied.It is simple that the present invention has making, easy to use, the feature that raising structure durability and control critical eigenvalue are carried out, and easily meets the application of a large amount of engineering.
Claims (5)
1. a unidirectional keel imbedded and fastened can assembled anti-cracking and seepage control permanent formwork, it is characterized in that: it forms template by panel (1) and connector (2), the cross section of described panel (1) and described connector (2) is matrix, two pieces of panels that described connector is adjacent with left and right fasten, and described panel and connector adopt superhigh tenacity cement-base composite material UHTCC to make; Use as template in the stage of building, build shaping after, do not need to remove, and double protected apron and the external protection doing structure.
2. unidirectional keel imbedded and fastened according to claim 1 can assembled anti-cracking and seepage control permanent formwork, it is characterized in that: superhigh tenacity cement-base composite material UHTCC used, its stretching strain ability reaches more than 1%, under ultimate tensile strength, crack width is less than 100 μm, each components by weight of the mortar matrix of UHTCC used is cement: water: fine aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin: water reducing agent=1:(0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4): (0.01 ~ 0.025), the maximum particle diameter of fine aggregate is not more than 0.5mm, be zero during the varying in weight of fine aggregate, flyash, silicon ash, granulated blast-furnace slag, metakaolin.
3. unidirectional keel imbedded and fastened according to claim 2 can assembled anti-cracking and seepage control permanent formwork, it is characterized in that: in UHTCC, go back admixture short fiber, short fiber kind is one or more in vinal, polyethylene fibre, aromatic polyamide fibre, and volume volume is 1 ~ 3%.
4. unidirectional keel imbedded and fastened according to claim 1 can assembled anti-cracking and seepage control permanent formwork, it is characterized in that: the cross section of described panel (1) is wide fluted body, and its inner surface is distributed with some grooves; The cross section of described connector (2) is narrow fluted body, and its outer surface is distributed with some grooves; The adjacent wall thickness summation of two pieces of panels that the recess width of described connector is adjacent with left and right is suitable, and be interlocked with the adjacent wall of described two pieces of adjacent panels, connect before and after the connector of same row, between described panel (1) and panel (1) and between panel (1) and connector (2), also pass through adhesive bond.
5. unidirectional keel imbedded and fastened according to claim 1 can assembled anti-cracking and seepage control permanent formwork, it is characterized in that: described template is connected and composed by polylith panel and connector, transverse joint between described panel staggers mutually, and the seam between connector and the transverse joint between panel stagger mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210162368.9A CN102720158B (en) | 2012-05-21 | 2012-05-21 | Unidirectional keel embedded assembled anti-cracking impermeable permanent formwork |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210162368.9A CN102720158B (en) | 2012-05-21 | 2012-05-21 | Unidirectional keel embedded assembled anti-cracking impermeable permanent formwork |
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| CN102720158A CN102720158A (en) | 2012-10-10 |
| CN102720158B true CN102720158B (en) | 2015-02-11 |
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| CN104446218A (en) * | 2014-12-12 | 2015-03-25 | 广西科技大学 | Method for improving anti-carbonization property of concrete |
| CN111560814A (en) * | 2020-05-27 | 2020-08-21 | 中建四局安装工程有限公司 | Detain formula and assemble interim steel sheet road |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201826535U (en) * | 2010-10-15 | 2011-05-11 | 秦忠喜 | Connecting fastener |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201826535U (en) * | 2010-10-15 | 2011-05-11 | 秦忠喜 | Connecting fastener |
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