CN201026643Y - Equipment for Prefabricating Concrete Seepage-proof U-shaped Groove Using Permeable Form Liner - Google Patents

Abstract

The equipment for prefabricating concrete anti-seepage U-shaped grooves with permeable formwork pads: an outer mold is arranged on the spring support, a vibrator is arranged on the outer mold, and an inner mold is placed inside the outer mold; it is characterized in that the inner wall of the outer mold is provided with The water-permeable template liner is provided with a water pumping hole on the outer mold at the same time, and the water pumping hole is connected with a water pump through a water pipe. The permeable formwork liner of the optimized scheme is composed of geotextile and geogrid; or composed of gauze composite porous plate. The vibrator can be an attached vibrator; the suction pipe can be provided with a valve; the water pump can be a concrete vacuum suction machine. The utility model can improve the compactness, strength and impermeability of the concrete U-shaped anti-seepage groove, improve the quality of the finished product, and can also reduce the cost; the U-shaped channel steel outer mold and the permeable template liner can be removed immediately after pouring, and the steel outer mold can be removed immediately. The reuse rate of the permeable formwork liner is improved, and the prefabrication production efficiency is improved.

Description

Equipment for Prefabricating Concrete Seepage-proof U-shaped Groove Using Permeable Form Liner

technical field

The utility model relates to a method for prefabricating a concrete anti-seepage U-shaped groove by using a permeable template liner, and equipment used in the production method.

Background technique

At present, the concrete anti-seepage U-shaped grooves used in domestic farmland irrigation canals are affected by many factors such as design, production technology, and material costs. Most of the finished product section lengths can only be 50cm. The shorter the joint length of the concrete anti-seepage U-shaped groove, the more joints will be assembled on site, and the more leakage will occur during water delivery. This is an obvious shortcoming of the current concrete anti-seepage U-shaped groove. At the same time, due to the large amount of farmland water conservancy infrastructure construction and the relatively small investment, the profit of the concrete anti-seepage U-shaped groove is low, resulting in low quality products and difficult promotion.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a new process for making concrete U-shaped anti-seepage grooves: a method for prefabricating concrete anti-seepage U-shaped grooves by using permeable formwork liners. The new process uses geosynthetic materials to make permeable formwork liners, which are applied to the vacuum dehydration production process of concrete U-shaped anti-seepage tank prefabrication, which can improve the production efficiency of concrete U-shaped anti-seepage tank prefabrication, reduce production costs, and improve product quality. The length of the finished product can improve the drainage and irrigation efficiency of the canal. At the same time, the application of the new technology makes it possible to use a large amount of industrial waste slag in the concrete U-shaped anti-seepage tank. On the premise of satisfying the strength and durability of the concrete, it can reduce the cost of raw materials and is conducive to environmental protection.

The scheme for accomplishing the above-mentioned utility model task is to utilize the permeable form liner to prefabricate the method of the concrete anti-seepage U-shaped groove, and the steps are as follows:

The permeable formwork liner is placed in the steel formwork;

Pouring concrete mixes;

vibration compacted concrete;

Start the water pump for vacuum dehydration, and at the same time, the concrete is vibrated and formed;

Lift and remove the U-shaped channel steel outer mold;

Remove the permeable form liner;

Concrete maintenance;

The U-shaped channel steel inner mold is removed to obtain the finished concrete U-shaped anti-seepage tank.

In other words, compared with the traditional technology, the process method of the present utility model has increased the following steps:

Place the permeable form liner in the steel form; vacuum dehydrate while vibrating and compacting the concrete; remove the permeable form liner.

The permeable template liner is a layer of permeable barrier layer, which can be permeable under the vacuum pressure, but also prevents the penetration of cement particles and sand particles, and its function is to form a uniform cavity and space between the geotextile and the steel mold. The channel provides guarantee for the vacuum dehydration step, so that the water in the concrete is evenly extracted and discharged, and at the same time blocks the concrete from flowing out. The permeable formwork liner is made of geotextile and geogrid composite, or composed of gauze composite porous plate.

Traditional technology requires sufficient water consumption to meet the requirements of concrete mixing, but concrete hydration and solidification only requires a very low water consumption, and the excess water evaporates in the concrete to form voids, reducing the strength and performance of concrete. The purpose of the vacuum dehydration of the utility model is to extract excess water in the concrete batching.

The above-mentioned equipment used in the method of utilizing the permeable template liner to prefabricate the concrete anti-seepage U-shaped groove is: an outer mold is arranged on the spring support, a vibrator is arranged on the outer mold, and an inner mold is placed in the outer mold; it is characterized in that, The inner wall of the outer mold is provided with a water-permeable template liner, and the outer mold is provided with a water pumping hole, and the water pumping hole is connected with a water pump through a water pipe.

The permeable template liner can be made of geotextile, or composited by geotextile and geogrid, and can also be composed of gauze or porous plate;

The vibrator can be an attached vibrator;

The water pumping pipe may be provided with a valve;

Described water pump can adopt concrete vacuum suction machine.

The mixing water in the concrete is evenly pumped out. Through the attached vibration, on the one hand, the compactness of the concrete can be improved, the strength and impermeability of the concrete can be improved, and the quality of the finished concrete U-shaped anti-seepage tank can be improved. Through the optimization of the concrete mix ratio, the concrete can also be reduced Raw material cost; on the other hand, the mixing water in the concrete is evenly pumped out, the plasticity of the concrete is reduced, and it has a certain consolidation strength. The reuse rate of the permeable formwork liner is improved, and the prefabrication production efficiency of the concrete U-shaped anti-seepage tank is improved.

The effect of vacuum dehydration on the compressive strength of concrete is as follows:

Water absorption time (min) Concrete moisture content (kg/m ³ ) Concrete compressive strength (MPa) 7d 28d 60d 90d 0 253 2.7 7.3 9.3 11.4 5 191 7.8 13.2 18.5 22.0 15 186 9.2 16.3 22.5 26.2

Description of drawings

Fig. 1 is the structural schematic diagram of the utility model equipment.

Detailed ways

Embodiment 1, the method and its equipment for prefabricating concrete anti-seepage U-shaped grooves using permeable formwork pads, see Figure 1: a steel outer mold 2 is arranged on the spring support 1, and a steel inner mold 3 is arranged in the outer mold 2, two The mold space is a concrete U-shaped groove 10. An attached vibrator 4 is arranged outside the steel outer mold 2, and a layer of permeable template liner 5 is attached to the inner wall of the steel outer mold. The permeable form liner 5 is composited by geotextile and geogrid. The wall of the steel outer mold is provided with a water pumping hole 6, which is connected with a vacuum pump 9 through a water pipe 7 and a valve 8. The preparation steps are as follows: pouring the concrete mixture in the steel mold; vibrating and compacting the concrete; starting the water pump to carry out vacuum dehydration, and at the same time, the concrete is vibrated into shape; lifting and removing the U-shaped channel steel outer mold; removing the permeable formwork liner; concrete curing; Remove the U-shaped channel steel inner mold to obtain the finished concrete U-shaped anti-seepage tank.

Claims (5)

1. A kind of equipment that utilizes permeable form liner to prefabricate concrete anti-seepage U-groove, the composition of this equipment is, is provided with outer mold on spring support, is provided with vibrator on the outer mold, is placed with inner mold in the outer mold; It is characterized in that a permeable form liner is provided on the inner wall of the outer mold, and at the same time, the outer mold is provided with a water suction hole, and the water suction hole is connected with a water pump through a water suction pipe. 2. The equipment for prefabricating concrete anti-seepage U-shaped grooves according to claim 1, wherein the permeable form liner is composited with geotextile and geogrid; or composited with gauze Perforated sheet construction. 3. The equipment for prefabricating concrete anti-seepage U-shaped grooves using permeable formwork pads according to claim 1 or 2, wherein the vibrator is an attached vibrator. 4. According to claim 1 or 2, the equipment for prefabricating the concrete anti-seepage U-shaped groove by using the permeable template liner, is characterized in that, the valve is arranged on the described water pumping pipe. 5. The equipment for prefabricating concrete anti-seepage U-groove by using permeable template liner according to claim 1 or 2, characterized in that, said water pump adopts concrete vacuum suction machine.

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