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Metakaolin-based inorganic composite cementitious material and its toughening modifier

A toughening modifier and metakaolin technology, which is applied in the field of metakaolin-based inorganic composite cementitious materials and their toughening modifiers, can solve the problems of affecting the fiber toughening effect, high market price of carbon fiber, and high requirements for preparation conditions , to achieve the effect of compressive strength without side effects, low production cost and improved comprehensive performance

Active Publication Date: 2016-03-23
江苏博拓新型建筑材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The toughness of the carbon fiber-reinforced inorganic composite cementitious material prepared by this method is greatly improved, but it has problems such as complicated operation process and high requirements for preparation conditions, and the market price of carbon fiber is high, so there is application cost in applying it to the toughening modification of cementitious materials (2) Fibers are added to the inorganic composite cementitious material to improve the toughness of the material, but there are problems such as poor fiber dispersion and easy agglomeration in the slurry, which seriously affects the toughening effect of the fibers

Method used

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  • Metakaolin-based inorganic composite cementitious material and its toughening modifier

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw material weight ratio is:

[0027] Metakaolin (100 mesh) 700g, slag (600 mesh) 300g, toughening modifier 10g, wherein in the toughening modifier 6.0g of medium-alkali glass fiber, 4.0g of hydroxyethyl cellulose, mixed with this ratio The performance of the prepared metakaolin-based inorganic composite cementitious material is tested, and the performance results of the metakaolin-based inorganic composite cementitious material prepared without toughening modifier are shown in Table 1.

Embodiment 2

[0029] Raw material weight ratio is:

[0030] 300g of metakaolin (400 mesh), 700g of slag (400 mesh), 12g of toughening modifier, wherein 9.6g of polypropylene fiber and 2.4g of carboxymethyl cellulose in the toughening modifier are prepared after mixing in this proportion Table 1 shows the performance of the metakaolin-based inorganic composite cementitious material tested and the properties of the metakaolin-based inorganic composite cementitious material prepared without toughening modifier.

Embodiment 3

[0032] Raw material weight ratio is:

[0033] Metakaolin (300 mesh) 700g, slag (200 mesh) 300g, toughening modifier 6g, wherein in the toughening modifier, polypropylene fiber 2.4g, medium alkali glass fiber 2.4g, hydroxyethyl cellulose 1.2g, Table 1 shows the performance of the metakaolin-based inorganic composite cementitious material prepared after mixing with this ratio and the performance of the metakaolin-based inorganic composite cementitious material prepared without toughening modifier.

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Abstract

The invention discloses a metakaolin-based inorganic composite cementing material and a toughening modifier of the metakaolin-based inorganic composite cementing material. The toughening modifier can effectively improve the toughness and the bearing capacity of the metakaolin-based inorganic composite cementing material and has the advantages of being simple in preparation process and low in production cost. The metakaolin-based inorganic composite cementing material and the toughening modifier of the metakaolin-based inorganic composite cementing material comprise the following components in parts by weight: 60 to 80 parts of fiber and 20 to 40 parts of fiber suspending agent.

Description

technical field [0001] The invention relates to an inorganic composite gelling material and its toughening modifier, more specifically to a metakaolin-based inorganic composite gelling material and its toughening modifier. Background technique [0002] Metakaolin is a kind of aluminosilicate-rich inorganic mineral, which is formed by dehydration after calcining kaolin at an appropriate temperature (600-900°C). It has strong pozzolanic activity and has been used as an active external admixture in cement concrete and mortar. and other cement products. Based on the reactivity of metakaolin, through the addition of industrial waste slag (slag, steel slag, fly ash, red mud, etc.) Materials have become a hotspot in the field of materials research. [0003] Cement is one of the basic materials of civil engineering construction. At the same time, it is also a typical resource and energy-consuming industry and an industry that pollutes the environment seriously. According to calcu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B28/00
Inventor 诸华军吴其胜张长森侯贵华
Owner 江苏博拓新型建筑材料股份有限公司
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