CN201152019Y

CN201152019Y - Hollow fiber moisture-keeping -type formwork lining cloth for concrete structural construction

Info

Publication number: CN201152019Y
Application number: CNU2007200886253U
Authority: CN
Inventors: 王晓宇; 曾宪森; 何亮
Original assignee: WUHAN LAITAI TECHNOLOGY Co Ltd
Current assignee: WUHAN LAITAI TECHNOLOGY Co Ltd
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2008-11-19
Anticipated expiration: 2017-11-30

Abstract

The utility model relates to a hollow fiber moisturizing formwork lapping cloth which is used in the construction of concrete structure. The formwork lapping cloth consists of an integral structure formed by a fibrous compact layer (2), a hollow-fiber layer (3) and a basic fibrous layer (4). The hollow-fiber layer (3) is arranged between the fibrous compact layer (2) contacting a concrete structure (1) and the basic fibrous layer (4) adhered to a construction formwork. The hollow fiber moisturizing formwork lapping cloth has the advantages as follows: 1. the formwork lapping cloth has water permeability, so redundant water in the early-age concrete is removed and cement particle is prevented from draining away, thereby improving the surface hardness of a concrete structure and the abrasive resistance of the concrete; 2. the formwork lapping cloth has gas permeability expels air from the early-age concrete to prevent a pore, thereby improving the surface compaction rate of the concrete structure and the compressive strength of the concrete; 3. the formwork lapping cloth has moisture retention, so the appropriate surface humidity of the concrete is kept during curing period, which is favorable for curing the concrete and preventing a surface crackle.

Description

Concrete structure construction doughnut humidity-preserving type template lining cloth

Technical field

The utility model relates to concrete pouring and uses the material field, particularly concrete structure construction doughnut non-weaving cloth moisture keeping template lining.

Background technology

Fall far short the application life and the projected life of concrete structure at present, had a strong impact on people's life, and society has been caused direct economic loss.Trace it to its cause and be: be subjected to abominable natural environment influence, effective supporting capacity of concrete structure reduces along with the continuity of time.

Facts have proved that concrete destruction at first from its surface, is inwardly progressively destroyed then, reach critical point after, structure is thoroughly destroyed, terminate application life.And surface breakdown mainly is because there is surface blemishes in it in forming process, as the bubble pore, and the sand line, honeycomb, pitted skin, crizzle runs mould, the out-of-flatness of plate face, the truncation arrisdefect, lines are not clear, surface peeling etc.Though these surface blemishes are not to occur simultaneously, the concrete structure loss in application life appears also can aggravating in one of them or part.The surface blemishes that exists is to improve by strengthening execution control a bit, as the out-of-flatness of plate face, and the truncation arrisdefect, lines are not clear, surface peeling etc.Some then is that existing form of construction work is fundamentally insurmountable, as the bubble pore, and sand line, honeycomb, pitted skin, crizzle etc.

In major project, brought into use template lining technology now, as " band drain+filter cloth " type permeable template, " nonwoven template lining " type permeable template etc., template is lined with permeable preferably, gas permeability, after using the template lining, moisture content and a large amount of bubble unnecessary in the concrete part hydration process of concrete surface layer certain depth can be discharged, and can obviously improve concrete surface quality.But this class technology has increased cost and difficulty of construction in work progress, more worthlessly be: this technology has no idea to solve on concrete initial curing problem, particularly big at wind, building member is big, under the maintenance moisturizing situation of difficult, influence more serious.

Summary of the invention

The utility model provides a kind of concrete structure construction with doughnut humidity-preserving type template lining cloth, in order to solve in the concrete casting process, gets rid of gas in the concrete component and unnecessary moisture content problem, thereby improves the surface property of concrete component; Simultaneously between curing time, can keep the suitable humidity of concrete surface, prevent its face crack, thereby improve the durability of concrete component.

Described concrete structure construction with the feature of doughnut humidity-preserving type template lining cloth is: described template lining cloth is a kind of by fiber compacted zone 2, doughnut layer 3 and the integrative-structure of fiber basal layer 4 by forming after the acupuncture; Wherein doughnut layer 3 be in the fiber compacted zone 2 that contacts with concrete structure 1 and and construction with between the bonding fiber basal layer 4 of template 5.

Described fiber compacted zone 2 is 0.7-2.5dtex by fiber Denier, length be 40-60mm polypropylene fibre constitute.Doughnut layer 3 is 4.0-8.0dtex by fiber Denier, and fibre length is that the polypropylene hollow fiber of 20-55mm constitutes, and hollow section is circle or polygon or abnormity.Fiber basal layer 4 is 2.5-4.0dtex by fiber Denier, and length is that the polypropylene fibre of 50-80mm constitutes.

The utility model compared with prior art has following effect:

1. has water permeability: can get rid of redundant moisture in the early concrete, and prevent the loss of cement granules, help improving the hardness on concrete structure surface, improve concrete abrasion resistance;

2. has permeability: can get rid of the air on early concrete surface, prevent the generation of surface pores, help improving the compaction rate on concrete structure surface, improve concrete compressive strength;

3. has performance of keeping humidity: can between curing time, keep the suitable humidity of concrete surface, help concrete maintenance, prevent the generation of face crack, improve concrete durability.

Description of drawings

Fig. 1 is the structural profile schematic diagram of template lining cloth;

Fig. 2 implements the structural profile schematic diagram when being used for the concrete structure construction.

The specific embodiment

Below in conjunction with Fig. 1, Fig. 2, be described further in the face of the utility model from template lining cloth user.

Show that as Fig. 2 the concrete structure construction with the using method of doughnut humidity-preserving type template lining cloth is:

1. the arrangement concrete construction is intended making it moulding with template 5 (wood, bamboo, steel), removes the foreign material on the template (wood, bamboo, steel);

2. check concrete construction and intend using template size, stay 50-150mm surplus cutting template lining cloth by every limit according to template 5 structures;

3. with spraying water soluble glue on the template 5 equably, entirely be positioned at the template lining cloth on the template;

4. make template and template lining cloth connect to one, fixture is decided on concrete template situation;

5. template and template lining cloth integrative-structure are undertaken by the existing technology of concrete construction.

Show as Fig. 1, described concrete structure construction is made of the three layer construction with difference in functionality with doughnut moisture keeping template lining cloth, fiber compacted zone 2 is 0.7～2.5dtex by fiber Denier, fibre length is that the polypropylene fibre of 40-60mm is made, and mainly realizes the function that concrete is ventilative, permeable and stop cement granules to run off; Doughnut layer 3 is 4.0-8.0dtex by fiber Denier, and fibre length is that the polypropylene hollow fiber of 20-55mm is made, and hollow section is circle or polygon or abnormity, mainly realizes concrete initial curing water conservation moisture-keeping functions; Fiber basal layer 4 is 2.5-4.0dtex by fiber Denier, and fibre length is that the polypropylene fibre of 50-80mm is made, the main function that realizes accelerating the concrete air-and water-permeable.Two of template lining cloth directly contact with template 5 with concrete structure 1 concrete mould respectively.

Claims

1. a concrete structure construction is with doughnut humidity-preserving type template lining cloth, and it is characterized in that: described template lining cloth is a kind of by fiber compacted zone (2), doughnut layer (3) and the integrative-structure of fiber basal layer (4) by forming after the acupuncture; Wherein doughnut layer (3) is in the fiber compacted zone (2) that contacts with concrete structure (1) and and constructs with between the bonding fiber basal layer (4) of template (5).

2. concrete structure construction according to claim 1 is with doughnut humidity-preserving type template lining cloth, and it is characterized in that: described fiber compacted zone (2) is 0.7-2.5dtex by fiber Denier, fibre length be 40-60mm polypropylene fibre constitute.

3. concrete structure construction according to claim 1 doughnut humidity-preserving type template lining cloth, it is characterized in that: described doughnut layer (3) is 4.0-8.0dtex by fiber Denier, fibre length is that the polypropylene hollow fiber of 20-55mm constitutes, and hollow section is circle or polygon or abnormity.

4. concrete structure construction according to claim 1 doughnut humidity-preserving type template lining cloth, it is characterized in that: described fiber basal layer (4) is 2.5-4.0dtex by fiber Denier, length is that the polypropylene fibre of 50-80mm constitutes.