Mass concrete vacuum dehydration sliding template device, filtering layer and construction layer

A technology of vacuum dehydration and sliding formwork, which is applied in the direction of formwork/formwork/work frame, formwork/formwork member, formwork treatment, etc., to reduce the risk of cracking, reduce the dosage, and speed up the construction progress.

Active Publication Date: 2012-04-25
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the current water conservancy and hydropower projects when the sliding formwork is lifted, the waiting time is long, the turnover rate of the formwork is slow, and there are many cracks in the surface concrete. Vacuum dehydration equipment (vacuum suction pad) cannot adapt to the construction of hydraulic building slip-form, low reuse rate, and high cost investment. The invention provides a filter layer of a large-volume concrete vacuum dewatering plate. The filter layer of the vacuum dehydration plate is Sliding formwork equipment with dehydration function composed of components (or called: mass concrete vacuum dehydration sliding formwork, abbreviated as: vacuum dehydration sliding formwork) and the construction method of mass concrete vacuum dehydration using this set of equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. According to the designed concrete thickness and length of the pouring layer, the designed upper formwork and lower formwork are 0.3m×15.0m in size, and the vacuum dehydration plate filter layer with a thickness of 1.0mm and a length and width of 15.0m and 0.3m is fixed On the inner side of the plastic sealing plate, the connection is firm and airtight;

[0033] 2. Drill a row of round holes with a diameter of 10 mm and a hole spacing of 60 cm in the middle part of the outer surface of the lower template. The outer connection of the round holes is a plastic pipe with an inner diameter of 10 mm, an outer diameter of 12 mm, and a length of 10 cm;

[0034] 3. Erection of vacuum dehydration sliding formwork according to construction design drawings;

[0035] 4. Connect the suction pipe of the vacuum dehydrator with the plastic pipe outside the lower formwork, and the connection is required to be tight and airtight;

[0036] 5. Pouring concrete;

[0037] 6. After the conc...

Embodiment 2

[0039] 1. According to the designed concrete thickness and length of the pouring layer, the designed upper formwork and lower formwork are 0.5m×8.0m in size, and the vacuum dehydration plate filter layer with a thickness of 1.2mm and a length and width of 8.0m and 0.5m is fixed. On the inner side of the lightweight plastic sealing board, the connection is firm and airtight;

[0040] 2. Drill a row of round holes with a diameter of 12 mm and a hole spacing of 80 cm in the middle part of the outer surface of the lower template. The outer connection of the round holes is a plastic pipe with an inner diameter of 12 mm, an outer diameter of 14 mm, and a length of 10 cm;

[0041] 3. Erection of vacuum dehydration sliding formwork according to construction design drawings;

[0042] 4. Connect the suction pipe of the vacuum dehydrator with the plastic pipe outside the lower formwork, and the connection is required to be tight and airtight;

[0043] 5. Pouring concrete;

[0044] 6. A...

Embodiment 3

[0046] 1. According to the designed concrete thickness and length of the pouring layer, the designed upper formwork and lower formwork are 0.4m×18.0m in size, and the stainless steel dewatering plates with a thickness of 1.8mm and a length and width of 18.0m and 0.4m are fixed on the plastic The inner side of the sealing plate, the connection is firm and airtight;

[0047] 2. Drill a row of round holes with a diameter of 8 mm and a hole spacing of 100 cm in the middle part of the outer surface of the lower template. The outer connection of the round holes is a plastic tube with an inner diameter of 8 mm, an outer diameter of 10 mm, and a length of 15 cm;

[0048] 3. Erection of vacuum dehydration sliding formwork according to construction design drawings;

[0049] 4. Connect the suction pipe of the vacuum dehydrator with the plastic pipe outside the lower formwork, and the connection is required to be tight and airtight;

[0050] 5. Pouring concrete;

[0051] 6. After the co...

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Abstract

The invention discloses a mass concrete vacuum dehydration sliding template device, a filtering layer and a construction layer. The filtering layer is composed of a stainless steel plate and is provided with permeable micropores with pore diameter of 30-80 mu m and pore spacing of 1-3mm. The sliding template device with a dehydration function comprises an upper template and a lower template, wherein the upper template is a steel sliding template, the lower template is formed by airtightly connecting the filtering layer and a plastic sealing plate, the plastic sealing plate is provided with a plurality of drainage holes, and a drainage short pipe is fixed outside each drainage hole. The sliding template device with the dehydration function is arranged in a construction site, after concrete is demixed, poured and vibrated, the upper template is immediately slide for 30-50cm, and then put down to cover on the surface of exposed fresh concrete for carrying out vacuum dehydration for 10-20min; and the concrete in the next layer of sliding template is poured and vibrated continuously while the vacuum dehydration is carried out. According to the invention, construction progress is greatly increased, cost is remarkably reduced, and pouring quality is improved.

Description

technical field [0001] The invention relates to engineering construction equipment and a construction method thereof, in particular to a filter layer of a large-volume concrete vacuum dewatering plate, a sliding formwork device with a dehydration function including the filter layer of the large-volume concrete vacuum dewatering plate, and the use of the set Equipment for dewatering construction methods of mass concrete. It is a formwork with vacuum dehydration and sliding functions and its construction method. It is a new type of engineering construction equipment that can quickly reduce the water-binder ratio of the surface concrete near the formwork, accelerate the setting and hardening of the surface concrete, and increase the turnover rate of the formwork. This equipment is mainly used in water conservancy projects, hydropower projects and other construction fields. It can solve the problems of long formwork removal time and slow formwork turnover rate caused by slow setti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G11/22E04G9/10E04G19/00E04G21/00
Inventor 张燕迟陈迅捷欧阳幼玲韦华钱文勋
Owner NANJING HYDRAULIC RES INST
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