CN102392485A

CN102392485A - Manufacturing method of plastic concrete inspection well

Info

Publication number: CN102392485A
Application number: CN2011103587856A
Authority: CN
Inventors: 李兴虎; 黄胜礼
Original assignee: SICHUAN TAIXIN INDUSTRIAL DEVELOPMENT CO LTD
Current assignee: SICHUAN TAIXIN INDUSTRIAL DEVELOPMENT CO LTD
Priority date: 2011-11-14
Filing date: 2011-11-14
Publication date: 2012-03-28
Anticipated expiration: 2031-11-14
Also published as: CN102392485B

Abstract

The invention discloses a manufacturing method of a plastic concrete inspection well, which comprises the following steps of: heating a plastic, extruding the plastic into a belt or a strip through a plastic extruding machine, using the obtained belt or the strip and a small amount of steel bars for weaving to form a cage-shaped framework of a formed part, placing into a cavity formed by an inner mold and an outer mold, casting concrete and adding trace plastic fibers into the concrete. By adopting the manufacturing method, the inspection wells in different specifications can be produced, centralized forming can be performed in a factory, the inspection well can be divided into sections for modular manufacturing, and then field assembly is performed, thereby overcoming inconvenience and cumbersome property caused by field construction; and simultaneously, the product is corrosion-resistant and reliable in quality.

Description

A kind of preparation method of plastic concrete manhole

Technical field

The present invention relates generally to a kind of composite product, particularly a kind ofly make the manhole that composite material that skeleton and concrete form is made by plastics.

Technical background

Draining, blowdown manhole that existing urban construction is used are generally used brick manhole, concrete inspection well and plastic inspection well.Brick manhole can be constructed flexibly, and adapting to different places is conventional practice.Because its intensity is low, voltage endurance capability is poor, and fragile, antiseepage ability, service time are short, are substituted by other.And to the draining in the municipal engineering, blow-off pipe, generally more greatly, darker, brick well difficulty meet the needs of.And the advantage of plastic inspection well advantage such as to be corrosion-resistant, acid and alkali-resistance, in light weight, long service life, easy construction, discharging fast; But various manholes change with the landform landforms, the shape of manhole, and change in size is big; Producing exploitation is difficult to adapt to; Large-scale well more than the one meter in diameter particularly, because the cost problem, maybe injection mo(u)lding.And the plastic inspection well relative intensity is low, and the pressure of pit shaft and well seat resisting longitudinal aspect is relatively poor, is difficult to take the weight carry, thereby generally only is used for the residential quarter, and size is also little, and general diameter is below 700-800mm.And in municipal engineering, manhole diameter (or size) is bigger, all is to continue to use concrete inspection well.Concrete inspection well intensity is high, and service time is long, voltage endurance capability is strong.But long construction period, acid and alkali-resistance ability, shock resistance are not as good as moulding well, because it has higher-strength, it is also simpler to construct, and still uses comparatively general.

But the steel concrete manhole, circular well no matter, rectangular well, flat well, drop well, to larger-size general selection cast-in-site, productivity ratio is low, is difficult to adapt to the needs of rapid construction.And reinforcing bar is not corrosion-resistant, and cost is uneconomical, at this special environment of sewer, uses also improper.

Summary of the invention

The object of the present invention is to provide a kind ofly can overcome the known technology shortcoming, realize fast, centralized production, production plantization, modularization, the preparation method of economic, stay-in-grade a kind of plastic concrete manhole.

For realizing above-mentioned purpose; Scheme of the present invention is: plastics heating is extruded into band, bar through extruding machine, is woven into the cage type framework that gives profiled member with band, bar and a small amount of reinforcing bar of gained, put into the cavity that is formed by outer mold; Add the micro plastics fiber in the casting concrete, concrete.

Adopt such scheme, the manhole of various different sizes can be concentrated moulding in factory; The manhole segmentation module is made, assembled on site, thus overcome the inconvenience that site operation brought and loaded down with trivial details; These goods are corrosion-resistant simultaneously, and reliable in quality has realized the object of the invention.

Through embodiment scheme is done more detailed explanation below.

The specific embodiment

Utilize plastics such as polyvinyl or polypropylene etc., be easy to moulding and have the characteristics of certain intensity, polyvinyl or acrylic resin are added glass fiber; Coupling agent, heating are extruded the billot that the different shape that needs comprises cross section squarely, rhombus, circle, ellipse and special-shaped different size earlier, and thickness does not wait; The various band material that width is different, as form wide 20mm, the band of thick 2-5mm; Billot is the 5-10mm diameter, then according to the requirement of concrete inspection well, with the strip after the moulding, banded plastic products, be woven into the cage shape; Resemble concrete well pit shaft form or circle, square, fan-shaped, size such as circular well 6-8 rice are dark, about 1 meter of diameter; The mode of braiding, vertical exactly, traversed by is miscoded and is made into type, and each flowing water arm also can be reserved or compiled out according to size.When the woven plastics cylinder mould, according to stress, vertically choose the billot that adapts, horizontal, oblique use band material during the cylinder mould braiding, leave the hole of certain size size, is not less than 50mm as forming the circular port diameter, is beneficial to concrete entering.During the cylinder mould braiding, both can select the bottom together to weave into, be connected as a single entity, and also can be divided into module and weave into, have nothing in common with each other, and can weave the intranet and extranet cage and form multilayer according to the borehole size size with pit shaft well seat.Pit shaft, well seat all-in-one-piece before concrete pouring with its combination, and add a small amount of reinforcing bar again, from the pocket of bottom; As supporting; Reinforcing bar is not to be enhancing concrete strength only as the support of plastic skeleton here, only provides transportation, the rigidity when installing to enroll in the cage.All preparations promptly get into the concrete pouring program after accomplishing.Be noted that in concrete mixing the plastic optical fibre of adding trace that should be suitable is like polypropylene fibre 0.4-0.9%; Silica flour 7-8%, additive 10%, other cement, river sand, stone are constant; After above-mentioned raw materials is done in proportion and is mixed; Add an amount of water again, stir, cast, tamping demoulding maintenance.Owing to added the intensity that micro-plastic optical fibre has increased manhole, improved it and impacted cracking behavior, impervious, corrosion resistance and frost resistance and measuring body ability, and had durability and toughness preferably.Use polyethylene fibre, then add and contain the surface conditioning agent alkyls so that concrete is strengthened.

In this mode, concrete mix does not change this material composition of traditional concrete, does not increase extra production equipment yet, and the program that just in mix, adds fiber is noted getting final product, and operation is simple, must not train especially.

With this kind mode, various manhole can be concentrated moulding, with manhole segmentation module simplified in manufacture, assembled on site, convenient construction in concrete plant area.

Claims

1. the preparation method of a plastic concrete manhole; It is characterized in that: the plastics heating is extruded into band, bar through extruding machine; Band, bar and a small amount of reinforcing bar with gained are woven into the cage type framework that gives profiled member; Put into the cavity that forms by outer mold, add the micro plastics fiber in the casting concrete, concrete.

2. the preparation method of a kind of plastic concrete manhole according to claim 1; It is characterized in that: polyvinyl or acrylic resin add glass fiber; Coupling agent; The different shape that adds hot-extrudable needs comprises the billot of cross section squarely, rhombus, circle, ellipse and special-shaped different size, and thickness does not wait, the various band material that width is different.

3. the preparation method of a kind of plastic concrete manhole according to claim 1 is characterized in that: with the strip after the moulding, banded plastic products, be woven into the cage shape, form circular, square, fan-shaped, vertical, traversed by and miscode and be made into type.

4. according to the preparation method of claim 1 or 3 described a kind of plastic concrete manholes; It is characterized in that: during the cylinder mould braiding, select the bottom together to weave into, be connected as a single entity or be divided into module with pit shaft well seat and weave into; According to the borehole size size, braiding intranet and extranet cage forms multilayer.

5. the preparation method of a kind of plastic concrete manhole according to claim 1 is characterized in that: in the concrete mixing, add the plastic optical fibre of trace; Polypropylene fibre 0.4-0.9%, silica flour 7-8%, additive 10%; Other cement, river sand, stone are constant, and above-mentioned raw materials adds an amount of water after doing in proportion and mixing again; Stir cast, tamping demoulding maintenance.