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Lining concrete water cooling age control method

A water cooling and control method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of no theoretical support, unreasonable, poor scientificity of water cooling age, etc.

Active Publication Date: 2019-11-29
WUCHANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on the above situation, the currently adopted water cooling method for internal temperature control of lining structure concrete has a poor scientific basis for water cooling age (time), has no theoretical support, and is obviously unreasonable, and the concrete temperature control guarantee is poor.

Method used

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  • Lining concrete water cooling age control method
  • Lining concrete water cooling age control method
  • Lining concrete water cooling age control method

Examples

Experimental program
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Effect test

Embodiment 1

[0099] 2 # Cooling Age Control of Concrete Lining in Unit 4 of Spillway Tunnel

[0100] Such as Figure 5 shown, 2 # The thickness of the lining structure of the fourth unit in the upper flat section of the spillway tunnel is 2.5m. for C 90 40 low heat concrete. The side wall lining concrete will be poured on May 12, 2017, as an example.

[0101] Such as image 3 As shown, the lining concrete water cooling age control method provided in this embodiment includes the following contents:

[0102] Step 1. Analyze the temperature control data of the lining concrete and determine the water cooling temperature control scheme:

[0103] Step 1-1. Organize and analyze the basic data of lining structure engineering. 2 # The basic information of the lining structure of the fourth unit of the upper flat section of the flood discharge tunnel, including temperature control and crack prevention, water cooling, design technical requirements, etc. are as mentioned above. Since the fl...

Embodiment 2

[0122] 1 # Control of water cooling age of lining concrete of unit 143 in upper flat section of flood discharge tunnel

[0123] 1 #The 143rd unit of the upper flat section of the flood discharge tunnel, the gate-shaped lining, the thickness of the side wall lining is 1.0m, and the circumferential construction joints are set every 12m along the axis of the flood discharge tunnel, Class III surrounding rock, the bottom plate and the side wall of the lining structure for C 90 40 low heat cement concrete, top arch is C 90 30 Low heat cement concrete, such as Figure 7 shown. The basic temperature control information is the same as above. The design concrete pouring temperature is 18°C, and tap water at room temperature is used for moisturizing and curing for 90 days, and the internal temperature of the concrete is controlled by water cooling.

[0124] Such as image 3 As shown, the lining concrete water cooling age control method provided in this embodiment includes the fol...

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Abstract

The invention provides a lining concrete water cooling age control method. The lining concrete water cooling age control method comprises the steps of collecting lining concrete temperature control data; calculating the water cooling control age Tj = 2H + 5 (formula 1) based on the collected lining concrete temperature control data, wherein H is the thickness of the lining concrete structure; andcontrolling the water cooling time of the low-heat cement concrete of the lining structure according to the water cooling control age Tj. The water cooling control age calculation formula 1 provided by the invention directly reflects the influence of the lining thickness; influences of different lining structures, section sizes of the lining structures, concrete varieties, strength grades, pouringseasons, pouring temperatures, water cooling, water temperatures of the water cooling and heat preservation measures are indirectly included. The water cooling age is controlled in the optimal time period, manual control errors are avoided. The labor intensity is reduced. The waste caused by long-time water cooling is avoided. The water cooling temperature control quality is guaranteed, and the lining concrete water cooling age control can be scientifically achieved.

Description

technical field [0001] The invention belongs to the technical field of temperature control and anti-cracking of lining concrete, and in particular relates to a method for controlling the age of lining concrete through water cooling. Background technique [0002] Lining is a structure widely used in civil engineering. Lining concrete will heat up due to the heat of hydration of cement and other cementitious materials, resulting in high internal temperature. For example, the highest temperature inside the lining concrete of the water delivery tunnel in the permanent ship lock of the Three Gorges Water Conservancy Project reaches nearly 60°C, and the lining concrete of the water delivery tunnel of Xiaolangdi Hydropower Station The highest internal temperature reached more than 70°C. The thickness of the lining structure is small, and most of them have high strength (for example, the strength of the spillway tunnel of a large hydropower station reaches C50, C60), the internal t...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E10/20
Inventor 段亚辉段次祎
Owner WUCHANG UNIV OF TECH
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