Fiber-reinforced alkali-activated cementing material and preparation method thereof

A gelling material and fiber-reinforced technology, applied in the field of fiber-reinforced alkali-activated gelling material and its preparation, can solve problems such as blocking traffic, rivers, consuming manpower, financial resources, and endangering ecological balance, so as to prevent and inhibit the formation of cracks and development, good long-term flexural strength and compressive strength, and the effect of improving flexural strength and compressive strength

Active Publication Date: 2013-02-06
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The discharge and accumulation of these waste residues not only consume a lot of manpower and financial resources, occup...

Method used

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  • Fiber-reinforced alkali-activated cementing material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Hollow glass microsphere foam concrete, its components are:

[0040] Raw material mass g

[0041] (1) Cementitious material

[0042] Metakaolin 300

[0043] Slag 700

[0044] (2) Alkali stimulator

[0045] Water glass 220

[0046] Sodium hydroxide 50

[0047] (3) Water 230

[0048] (4) PVA 1.2

[0049]1. Accurately weigh 300g of metakaolin and 700g of slag as the basis of measurement (100%); put the weighed metakaolin and slag into the cement slurry mixer, mix evenly, then pour 12.g of PVA, start Stir evenly (low speed, make the material uniform);

[0050] 2. Weigh 220g of water glass, pour it into a container, then weigh 50g of sodium hydroxide, slowly pour it into the water glass, and stir at the same time, so that the sodium hydroxide is completely dissolved in the water glass, thereby reducing the modulus of the water glass Purpose, finally place the water glass for a period of time, so that the temperature of the water glass with adjusted modulus...

Embodiment 2

[0055] Fiber-reinforced alkali-activated gelling material, the components of which are:

[0056]

[0057] Its preparation method is identical with embodiment 1.

[0058] Experimental results show that the compressive strength of the cementitious material prepared according to the method can reach 83.7MPa, and the flexural strength can reach 11.7MPa.

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Abstract

The invention discloses a fiber-reinforced alkali-activated cementing material and a preparation method thereof. Polyvinyl alcohol fiber, water glass and water are added in slag and metakaolin; under the activation effect of the water glass, the slag and the metakaolin form the strength, and the polyvinyl alcohol fiber achieves the effect of enhancing the compressive strength and the breaking strength of the cementing material. The mass of polyvinyl alcohol is 0.08-0.25% of that of the slag and the metakaolin, and the mass of the water glass is 20-25% of that of the slag and the metakaolin. The preparation method comprises the steps as follows: dispersing the polyvinyl alcohol fiber in the slag and the metakaolin according to a formula amount, placing the mixture in a cement paste stirrer for stirring, and adding a water glass solution with adjusted modulus into the mixture to form uniformly mixed paste; and forming, and placing the product in a standard curing box for curing. The cementing material prepared according to the method has favorable long-term breaking strength and compressive strength after being cured and can reach the 28-d compressive strength of 83.7 MPa and the breaking strength of 11.7 MPa.

Description

technical field [0001] The invention relates to a novel gelling material, in particular to a fiber-reinforced alkali-activated gelling material with good tensile strength and a preparation method thereof. Background technique [0002] Metakaolin (MK) is a product formed by dehydration of kaolin at high temperature. In the silicate industry, the research on metakaolin, an artificial pozzolan sintered clay material, started relatively late. Foreign countries began to increase from the 1980s, and the research intensity continued to increase in the mid-to-late 1990s, mainly focusing on the effects of using it as a mineral admixture on the properties of cement and concrete, and also making it into cementitious material products. Research. Domestic research on metakaolin started very late, and in recent years there have been some reports on the use of metakaolin as a mineral admixture. As a new generation of cementitious material, metakaolin has made great progress in research ...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B16/06
Inventor 王晴丁兆洋冉坤
Owner SHENYANG JIANZHU UNIVERSITY
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