CN1693629A

CN1693629A - Hollow less floor pipe core for cast-in-place concrete and its production technology

Info

Publication number: CN1693629A
Application number: CN 200510006534
Authority: CN
Inventors: 田斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-20
Filing date: 2005-01-20
Publication date: 2005-11-09
Anticipated expiration: 2025-01-20
Also published as: CN1316131C

Abstract

This invention discloses cast-in-placing concrete hollow non-beam floor pipe core and manufacture technique. The product is a pipe type gypsum product, its feature is that gypsum powder is main material, certain intensifier and water-proof agent are assistants, and then it is finished after agitated blending and injection moulding. In order to increase toughness and bonding strength of pipe core, one layer of fiber grid cloth is needed to wrapped on surface of inner core when it is made, and inner core needs to be painted by release agent when grid cloth is wrapped in order to conveniently get inner core. The advantages are low price, simple manufacturing equipment and technique, manual and scale product. Pipe line arrangement in the board is flexible, and can through core pipe anyway. It can bear human load when construction and it will not be shattered when concrete is shocked. Its using range is wide to buildings of all kinds of span and load.

Description

Hollow less floor pipe core for cast-in-place concrete and production technology

Technical field

The present invention relates to structure material, is the tube core that a kind of cast-in-situ reinforced concrete hollow arch without beam is used.

Background technology

The reinforced concrete floor plate that industry and civilian construction building are used, generally all be to adopt cast-in-place and precast spliced dual mode, precast spliced floor structure is at floor manufacture, can accomplish that loss of weight is hollow, and no matter cast in site floor is one-way slabs girt strip superstructure, two-way slab girt strip superstructure or close rib building roof, it all is the cast-in-place solid superstructure that successively carries out by progress, owing to be subjected to the restriction and the relation of structure,, all must come bracketing by lintel to space and the bigger superstructure of span because of conducting oneself with dignity.Its result causes effective floor height to reduce, and cost strengthens, and the shock resistance of floor is affected.For this reason, there is the area to begin to adopt the technology of cast-in-situ hollow building roof, simply say so a kind of cast-in-place way of slab non-core-drawing pore-creating of its principle, the circular hole that forms because of the non-core-drawing pore-creating technology alleviates the superstructure deadweight significantly, remove can save near half superstructure and lintel with outside the concrete, still has many-sided advantage, as can corresponding reduction floor, reduce various space enclosing structures and furred ceiling, sound insulation, noise reduction, comprehensive cost is low etc., the native land Ministry of Construction of man is promoted in Ceng Zuowei science and technology item in 1999, but do not obtain obvious benefit as yet, because of it adds the tube core that fills, originally hear and adopt the typing of vegetalitas straw binding turns to carry out afterwards hear it is to adopt glass fiber reinforced plastic afterwards, the tube core that plastics and other class high-strength composite material goods are done, clearly, the former slightly is pickled with grains or in wine and does not guarantee quality, and restriction is used, though the good cost of the latter is higher, add linking difficulty to a certain degree, so fail to popularize, hear again and select cement for use, need not because of can not form production scale.The present invention then finds a new way, and selects for use the cheap land plaster of easily getting to cook major ingredient and makes a core, experiment showed, and has obtained satisfied effect.

Summary of the invention

The object of the present invention is to provide a kind of tube core that is used for the cast-in-situ steel reinforced concrete superstructure is carried out non-core-drawing pore-creating, the superstructure deadweight is alleviated significantly so can come bracketing without lintel, its superstructure quality and bearing strength are the same substantially with slab quality and intensity under the solid state, implement also to be easier to.

The objective of the invention is to realize by the following technical solutions.

Select raw material and weight portion for use:

Land plaster 100, reinforcing agent 2～6, waterproof agent 0.5～2, fibrous mesh cloth-tube in-core surface one deck,

Water distribution 60, release agent-an amount of.Described reinforcing agent generally selects for use methylol fibrid element to get final product,

Described waterproof agent selects JJE type waterproof cold oil, and described release agent selects machine oil inferior.

Basic equipment configuration during production:

External mold---the external diameter of application cylinder core, but be the chuck of cylindrical folding;

Interior core---the wall thickness of application cylinder core is common thin-wall steel tube;

Snap ring---the length of application cylinder core is for steel can be adjusted spacing and the anchor clamps that make interior external mold typing;

Agitated kettle---stir the slip container.

The activities of producing:

(1) earlier with the surface of core in the release agent brushing, again fibrous mesh cloth is wrapped up its last layer;

(2) the interior core that will be wrapped with grid cloth is inserted in the external mold, locks by design length with snap ring behind the buckling die;

(3) water is poured into earlier in the agitated kettle by weight, land plaster, reinforcing agent, waterproof agent are poured into successively carried out stir about in the pot 2 minutes then;

(4) slurries that stir are injected among the mould, treat after the initial set interior core to be extracted about 10 minutes, after the final set in about again 20 minutes, open an external mold taking-up tube core and make it air dry, and prefabricated obstruction is blocked up into the two ends endoporus, it is bonding to connect agent with a small amount of powder.

Product of the present invention is through proving repeatedly and test, and with the core pipe ratio of high-strength composite material goods, has the advantage of following several respects under the prerequisite that guarantees construction quality and technical standard:

Price is low, only is 1/4～1/3 of composite product;

Production equipment and production technology are simple, can carry out energy-conservation, the no three wastes by hand;

Pipe line arrangement in the floor structure is flexible, can intert spool arbitrarily;

The loading of can the grantee in the construction stepping on and being shattered can not shake concrete the time;

The scope of application is wide, is applicable to the building of various spans and loading, is specially adapted to large span, big load, the multilayer of large space, high-rise industry and civilian construction, and can forms certain production scale.

The specific embodiment

Product of the present invention is a kind of the cast-in-situ steel reinforced concrete floor structure to be carried out the tube core of non-core-drawing pore-creating, is a kind of circular pipe type plastering, the concrete at alternative slab middle part, thus reach the deadweight that alleviates superstructure and the bearing capacity that has when guaranteeing slab is constant substantially.Because its selected major ingredient is the cheap land plaster of easily getting, the chance water-setting is solid, as long as a forming mould is arranged, so no matter make still streamline mechanism by hand, all be very easy, can form certain production scale, basic equipment configuration is comparatively simple, mainly includes: external mold---be used for the external diameter of moulding and application cylinder core, but chuck for cylindrical folding, leave the slip casting aperture above, according to the span and the load-bearing requirement of superstructure, but diameter and length array configuration; Interior core---the wall thickness of application cylinder core is common thin-wall steel tube, and with the supporting use of external mold, length is longer so that extract than external mold, and diameter also is an array configuration; Snap ring---the combination of locking external mold and interior core, for steel can adjust spacing and make in the anchor clamps of external mold typing, but and the length of application cylinder core; Agitated kettle---stir the used container of slip, be furnished with electric mixer in the pot, send the slurry pipeline under the pot.Under this basic equipment condition, the activities of its production is: the surface of core in (1) is painted on release agent earlier, again fibrous mesh cloth is wrapped up on it; (2) the interior core that will be wrapped with grid cloth is inserted among the external mold, and fixing back is locked by design length with snap ring; (3) water is poured in the agitated kettle by weight in advance, land plaster, reinforcing agent, waterproof agent are poured in the pot successively stirred then, got final product in about 2 minutes; (4) slurries that stir are injected into moulding among the mould by sending the slurry pipeline, treat inner core to be extracted after the slurries initial set about 10 minutes, just reached final set after about 20 minutes, die sinking is taken out the tube core and is made it air dry then, and prefabricated obstruction blocked up into the two ends endoporus, it is bonding to connect agent with a small amount of powder.

Material therefor among the present invention, except that land plaster with the common high-purity powder, all the other, reinforcing agent generally selects for use CMC to get final product, described waterproof agent is selected JJE type waterproof cold oil for use, and described release agent is for core usefulness in extracting smoothly, so optional liquid oils inferior such as waste used oil etc.Fibrous mesh cloth is to use for the toughness and the setting strength that improve a core, is molded over the inner surface of a core during making, so cast will be rolled in earlier on the surface of interior core when making, generally has one deck to get final product, and its thickness is not done requirement.

Product of the present invention will carry out an acceptance inspection by nation-building portion ministry standard.

The specification of tube core: outer diameter D (mm), 100,120,150,180,200,220,250,280.

Length L (mm), 500,1000,1500,2000.

The quality of tube core: check and accept by national existing relevant technologies standard, the content of fluoride and alkali will satisfy related standards in the material therefor, the harmful components that should not contain influential environment and health of human body, barrel is closely knit, the two ends closure plate is connected firmly, the smooth zero defect of barrel outer surface, size standard, whole physical and mechanical property comprises that water absorption rate, resistance to compression load, anti-vibration impact etc. all should meet design requirement.

The use of tube core: undertaken by construction technical requirement, comprise that transportation, stacking, installing and locating, spreading, anti-floating, reservation are buried, watered, examination etc., all will meet ordered technical requirements.

Claims

1, a kind of hollow less floor pipe core for cast-in-place concrete, it is a kind of circular pipe type plastering, it is characterized in that, be to pour into a mould by the raw material mixing back of following weight parts to form, wherein: land plaster 100, reinforcing agent 2～6, waterproof agent 0.5～2, fibrous mesh cloth-tube in-core surface one deck, water distribution 60, release agent-an amount of.

2, by the described hollow less floor pipe core for cast-in-place concrete of claim 1, it is characterized in that: described reinforcing agent is selected methylol fibrid element for use, and described waterproof agent is a JJE type waterproof cold oil, and described release agent is a liquid oils inferior.

3, the production technology of hollow less floor pipe core for cast-in-place concrete is characterized in that:

(4) slurries that stir are injected among the mould, treat after the initial set inner core to be extracted about 10 minutes, after the final set in about again 20 minutes, open an external mold taking-up tube core and make it air dry, and prefabricated obstruction is blocked up into the two ends endoporus, it is bonding to connect agent with a small amount of powder.