DE1941317A1 - Reinforced concrete post covered with plastic - Google Patents

Description

Dipl. Phys. Dr. rer. nat. Wolfgang Kern pe

PATENT ADVOCATE

68OO Mannheim 25

DÜreratrae · »1 Telephony <Οβ31) 4OeS01

13th August 1969 Ev 1

Albert Norman Brown.

P i η η er
Middlesex / Great Britain

"Reinforced concrete pile covered with plastic ¹¹

The invention relates to a reinforced concrete post encased in plastic, which is used in particular for fences, signboards or can be used as a stand for other purposes.

Such piles are usually reusable Molds or poured into temporary formwork and Used unclad, because the concrete cast surface changes with the weather resists and therefore a protective coat of paint is unnecessary. However, as a result of the cyclical change in temperature and mechanical loads, these piles crumble over time and are destroyed. "

OO988S / 1340

13.8.1969 - Et 1

It is the object of the present invention to provide a post with a long service life, the lower manufacturing cost requires and looks good throughout Maintains service life so that structural maintenance costs can be reduced.

With a concrete pile, this task becomes the one described at the beginning Type solved according to the invention by a self-supporting Durable plastic pipe that is reinforced with a metal frame contains and into which a concrete mixture can be filled, which is in the Plastic pipe is compressible.

In an expedient development of the invention, there is the plastic pipe made of polyvinyl chloride and the concrete mix is one malleable mixture of Portland cement, sand and gravel »included hard PYC, black, green or gray, is particularly suitable is colored. But other plastics can also be used

In

to the extent that they are resistant to the environment to which they are exposed are.

The concrete mix preferably contains a plasticizer.

Filling the plastic pipe causes difficulties »In Further development of the invention is therefore proposed; that the entire plastic pipe during the pouring of the concrete mix is shaken by at least one vibrator so that the mixture can flow into the pipe and is compressed there. It has been shown that it is not enough if only one person Part of the pipe is given a vibration. According to the invention it is therefore provided that both end pieces of the plastic pipe be shaken by separate vibrators. Such a procedure is enough to make a pile of 9 to 12 cm Diameter with inside arranged iron bars for reinforcement and a length of up to 3 1/2 m to fill without difficulty

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August 13, 1969 - Ev 1

and compress the concrete mix in it.

Preferably the plastic pipe or a series of stands Plastic pipes vertically on a vibrating table in order to primarily to ensure the compression of the mixture. The concrete mix is fed into the upper end piece by falling feed or the end pieces are filled in, which are vibrated separately, primarily to ensure the flow of the mixture into the pipe. The vibration at the upper end of the tube is expediently achieved by shaking a feed funnel. This ensures at the same time that the mixture is made of the funnel flows.

To attachments to provide the pile _B Verden transversely inserted through the plastic tube of the concrete mix or SPI pins Jite before filling. They are pulled out before the concrete sets, leaving holes for bolts or other fasteners.

Before molding the concrete, one end is preferred Pulled a plastic cap on the pipe. It can be attached by an interference fit or by plastic glue or solvents will. The end of the tube thus closed by the cap becomes the lower end during the filling and molding process and serves as a sealed top end when the stake is taken into use. ·

Further details and expedient developments of the invention are given below with reference to one in the drawing illustrated embodiment described and explained in more detail.

009885/1340

BATH ORIGINAL

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Show it;

Fig. 1 is a partially sectioned side view a concrete pile according to the invention with a device for its production and

FIG. 2 shows a cross section through the exemplary embodiment according to FIG. 1.

A colored PVC pipe 1 of 2 m in length has a circular shape Cross-section and an outer diameter of 8 cm. Its wall thickness is approx. 5 mm. At its lower end is a matching cap 2 attached, which is also made of PVC. In the tube 1 is a frame made of four Elsen rods 3 with Wire spacers 4 arranged as concrete reinforcement * Greased iron pins 5 are inserted across the plastic pipe 1, which are pulled out before the concrete sets, leaving bolt holes in the completed pile.

The inverted tube 1 stands upright on a vibrating table 6, which is shown schematically in the drawing. A concrete mixture mixed with plasticizers 10 with a gravel ' grain size of 1 cm is poured from a funnel 7 through an outflow opening 8 into the upper end of the tube 1. The funnel 7 is coupled to a motor-driven vibrator 9. The funnel vibration is transmitted to the upper end of the Pipe 1 passed, whereby the flow of the mixture into the Pipe 1 into and into the pipe is ensured. The vibrating table 6 helps that the mixture to the bottom of the pipe 1 flows and then plays the predominant role in compressing the mixture.

Of course, the PVC pipe 1 can have a different cross section as a circular j it can for example be oval

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00988S / 1340

- ■ 5 -,. ■■ '■ ■: ■ "■■■■■. 13 * 8.1969 - Ev 1

or have uniform contours like a rectangle. Dl ^ iron bar reinforcement usually requires rods the full length of the pipe. The number and thickness of these rods will in coordination with the practical requirements of "concrete reinforcement chosen. ν

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0098 857 1340

Claims (6)

-.6 - /; ■ "■ ■ ... ■■■ .. - - ■■■■ -. 13.8.1969— Ev 1 Expectations · Hit plastic encased reinforced concrete post, characterized by a self-supporting permanent plastic pipe (1), which is reinforced with a metal frame (3, 4) contains and into which a concrete mixture (10) can be filled, which can be compressed into the plastic pipe. 2. Concrete pile according to claim 1, characterized in that the plastic pipe (1) consists of polyvinyl chloride and dad daa Betongemiach (10) a malleable mixture Portland cement, sand and gravel is. 3. Concrete pile according to claim 1 or Z, characterized in that pull-out pins (5) are provided in the plastic pipe (1) which form fastening elements in the gu & aaase. 4. Method of making «Lnes concrete pile according to a of claims - * 1 to 3> characterized by the fact that entire plastic pipe (1) during the filling of the concrete mixture (10) by at least one vibrator (9) is shaken so that the mixture flow into the tube can and is condensed there. ■; ■■■ .-. ■ - .. ■ ■■■■ .... ■■. ■■ ■. - 7 - - ■■ 009885/1340 BAD ÖRlOfNÄL 13.8.1969 - Et 1 5. The method according to claim 4, characterized in that both end pieces of the plastic pipe (1) by separate ones Vibrators (9) are shaken. 6. The method according to claim 4 or 5 »characterized in that that the filling and compacting of the concrete mixture (10) by shaking the and fall feed into the upper end piece of the plastic pipe (1), / which is on a vibrating table (6) stands, is effected. 009885/1340 Le β rs β i te