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Method for curing bottom plate concrete of nuclear island

A technology of concrete and concrete floor, applied in the direction of ceramic forming machine, manufacturing tools, etc., can solve the problems that cannot meet the maintenance requirements of nuclear island concrete in nuclear power plants

Inactive Publication Date: 2012-06-20
STATE NUCLEAR POWER ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing civil maintenance technology cannot meet the maintenance requirements of nuclear island concrete in nuclear power plants

Method used

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Embodiment Construction

[0016] In order to make the present invention more comprehensible, a preferred embodiment is described in detail as follows.

[0017] A kind of concrete maintenance method of nuclear island bottom slab described in the present embodiment, its steps are:

[0018] Step 1. Maintenance of the top surface of the nuclear island concrete floor, the steps are:

[0019] Step 1.1. Heating stage: After the final setting of the concrete, cover the surface with 2 layers of fully wet sacks for 3 days. During this process, keep the sacks moist;

[0020] Step 1.2. Before the concrete is about to enter the cooling stage (the initial temperature of the cooling stage is about 57°C), cover the surface of the uppermost sack with a layer of plastic film, and then lay two layers of sacks, one vertical and one horizontal Lay in the same way, cover the surface of the top layer of sack with a layer of geotextile, lay three layers of sacks on it, then lay a layer of plastic film, and finally lay two la...

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Abstract

The invention provides a method for curing bottom plate concrete of a nuclear island. The method is characterized by comprising the following steps of: carrying out heat and humidity insulation by using wet gunny bags in the heating stage; alternatively paving plastic films and gunny bags before the concrete is about to enter the cooling stage; and finally paving geotextiles for heat insulation in the cooling stage. The method for curing the bottom plate concrete of the nuclear island, provided by the invention can be used for curing a huge and large concrete bottom plate of the nuclear island of a million-kilowatt above nuclear power plant.

Description

technical field [0001] The invention relates to a method for curing the first tank of concrete applied to the nuclear island raft foundation of a million-level kilowatt power nuclear power plant after pouring. Background technique [0002] At present, there is only concrete curing technology for the nuclear island floor of nuclear power plants below the million-level level. Because nuclear power plants below the million-level level do not use large-volume pouring and large-volume maintenance for the concrete maintenance of the nuclear island floor, it is difficult to apply the existing technology to nuclear power plants above the million-level level. [0003] At present, the existing large-volume concrete curing technology is mostly used in civil buildings. Although the volume is large, the surface area is not very large. Moreover, the requirements for concrete grade and safety standards for civil buildings are not as high as those for nuclear power plant construction. The...

Claims

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Application Information

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IPC IPC(8): B28B11/24
Inventor 张生元韩飞
Owner STATE NUCLEAR POWER ENG
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