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Ultralow-heat binder composition with high-temperature type latent-heat compound and method for lowering hydration heat of concrete by using same

A technology of compound and binder, applied in the field of ultra-low heat binder composition, to achieve the effect of improving thermal cracking index, excellent latent heat effect, and reducing temperature stress

Active Publication Date: 2012-05-23
特里波德株式会社 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In addition, since the oscillating capillary heat pipes (diameter 4.0mm and inner diameter 2.8mm) made of copper are placed between the steel bars before concrete pouring, the technique of distributing the heat of hydration using heat pipes is problematic in terms of construction complexity and economic efficiency

Method used

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  • Ultralow-heat binder composition with high-temperature type latent-heat compound and method for lowering hydration heat of concrete by using same
  • Ultralow-heat binder composition with high-temperature type latent-heat compound and method for lowering hydration heat of concrete by using same
  • Ultralow-heat binder composition with high-temperature type latent-heat compound and method for lowering hydration heat of concrete by using same

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Embodiment

[0041] The latent heat effect latent heat compound-containing ultra-low heat binder of the present invention, and its ability to control concrete physical properties and heat of hydration will now be described in detail.

[0042] According to the mixing standard 25-24-21 (meaning that the maximum particle size of aggregates used in concrete mixing is 25mm, the design strength of 28 days is 24MPa and the slump indicating fluidity is 21em), verified by the embodiments of the present invention and comparative examples The physical properties and heat of hydration properties of the controlled concrete are shown in Table 1 below.

[0043] Table 1

[0044]

[0045] ※Maximum grain size of coarse grain: 25mm, design standard strength: 24.0MPa, slump: 18±2.5cm

[0046] The comparative example is a low heat concrete (No. 1) containing an existing ternary low heat binder consisting of 40wt% Ordinary Portland Cement (OPC), 40wt% Blast Furnace Slag (BFS) and 20wt% Fly Ash (FA). The e...

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Abstract

The invention relates to an ultralow-heat binder composition with a high-temperature type latent-heat compound and a method for lowering the hydration heat of concrete by using the ultralow-heat binder composition with the high-temperature type latent-heat compound, wherein the ultralow-heat binder composition is prepared by mixing an inorganic latent-heat compound having the phase transition temperature of 60 DEG C or higher, with a concrete binder through a premixing method. The invention provides the ultralow-heat binder composition which is prepared by mixing a 0.5-10 wt% compound selected from strontium-based latent-heat compound [Sr(OH)2 8H2O], barium-based latent-heat compound [Ba(OH)2 8H2O], magnesium-based latent-heat compound [Mg(NO3)2 6H2O] and ferrum-based latent-heat compound [Fe(NO3)2 6H2O], with a 100wt% ternary binder through the premixing method, wherein the ternary binder consists of 20-70 wt% I type ordinary Portland cement (OPC), 20-60 wt% blast furnace slag (BFS) and 10-60 wt% fly ash (FA); and the invention further provides the method for controlling the hydration heat of the concrete.

Description

Background technique [0001] The present invention relates to an ultra-low heat binder composition containing a high-temperature type latent heat compound having a latent heat effect necessary for controlling the heat of hydration of concrete, and a method for reducing the heat of hydration of concrete by using the same. More particularly, the present invention relates to an ultra-low heat binder composition containing a high-temperature type latent heat compound, such as a barium-based compound [Ba(OH) 2 ·8H 2 O], magnesium-based compounds [Mg(NO 3 ) 2 ·6H 2 O], iron-based compounds [Fe(NO 3 ) 2 ·6H 2 O] or strontium-based compounds [Sr(OH) 2 ·8H 2 [0], wherein the ultra-low heat binder composition can effectively control the heat of hydration of the concrete through the latent heat effect of the ultra-low heat binder composition, which can reduce the temperature stress of the concrete and improve the concrete thermal cracking index (thermal cracking index); It also r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B22/06
Inventor 吉培秀金度洙朴龙洵姜龙植李道范金旭钟金容鲁李时求韩承九尹吉昊尹万洙尹顯道
Owner 特里波德株式会社
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